CN109154367A - Draw speed reducer and the speed reducer with motor - Google Patents
Draw speed reducer and the speed reducer with motor Download PDFInfo
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- CN109154367A CN109154367A CN201780029857.8A CN201780029857A CN109154367A CN 109154367 A CN109154367 A CN 109154367A CN 201780029857 A CN201780029857 A CN 201780029857A CN 109154367 A CN109154367 A CN 109154367A
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 103
- 230000002093 peripheral effect Effects 0.000 claims abstract description 39
- 230000002265 prevention Effects 0.000 claims description 22
- 239000010687 lubricating oil Substances 0.000 claims description 11
- 238000004804 winding Methods 0.000 description 28
- 230000033001 locomotion Effects 0.000 description 13
- 239000000314 lubricant Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 241000278713 Theora Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
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Abstract
A kind of traction speed reducer comprising: sun roller is pivoted about with rotary shaft；Multiple planetary rollers configure around sun roller；A pair of circular inner ring, contacts with multiple planetary rollers；And bracket, it keeps planetary rollers and is pivoted about with rotary shaft.Multiple planetary rollers are contacted with both sun roller and inner ring respectively, and receive power from sun roller, are thus revolved centered on rotary shaft when carrying out rotation.Bracket has the contact surface opposite with the outer peripheral surface of planetary rollers, and the outer peripheral surface of planetary rollers contacts on the circumferencial direction centered on rotary shaft with contact surface.The bracket pin of each planetary rollers is not needed to support to rotation as a result,.Therefore, number of components can be reduced and makes to draw speed reducer miniaturization.
Description
Technical field
The present invention relates to a kind of traction speed reducer and with the speed reducer of motor.
Background technique
Conventionally, there is known it is a kind of using the traction generated between sun roller and planetary rollers (friction), make the rotation of input shaft
The traction speed reducer for rotating output shaft after speed reduction.About such traction speed reducer, such as in Japanese Patent Laid-Open 2009-
It is on the books in No. 138924 bulletins.
It includes: sun roller that the traction power recorded in this document, which conveys device, is rotated freely around the 1st central axis；It is more
A shaft component is configured in a manner of matching the 2nd central axis on multiple periphery axis with the 1st centerline axis parallel；It is multiple
Planetary rollers are rotatably freely arranged in the state of being supported by shaft component along the periphery of sun roller；Guiding elements is being protected
Hold the 1st central axis it is parallel with the 2nd central axis in the state of, in the radially movably leading axle structure of sun roller
Part；And pressing member, planetary rollers are extruded on the periphery of sun roller, and benefit can be carried out between sun roller and planetary rollers
With the power transmission of traction.
Following main points are recorded in this document: radial direction of the shaft component of the rotation center as planetary rollers in sun roller
Upper movement, if therefore power that planetary rollers are extruded on the periphery of sun roller play a role, thus can be in sun roller and row
Traction is generated between star roller.In turn, following main points are recorded: even if planetary rollers radially moving in sun roller, planetary rollers
Rotation center also remain parallel with the rotation center of sun roller, therefore can equably generate in axial direction traction (ginseng
According to 0007~paragraph of paragraph 0008 etc.).
Patent document 1: Japanese Patent Laid-Open 2009-138924 bulletin
Summary of the invention
Problem to be solved by the invention
But in the structure recorded in Japanese Patent Laid-Open 2009-138924 bulletin, it is necessary to press section will be utilized
The configuration of planetary gear press surface than shaft component closer to radial outside.Further it is necessary to be different from shaft component and planet is arranged
The press surface of roller.Therefore, the radial miniaturization for drawing speed reducer becomes difficult.
The purpose of the present invention is to provide one kind in traction speed reducer, can reduce number of components and keep traction speed reducer small-sized
The technology of change.
Technical means to solve problem
The 1st illustrative invention of the application is a kind of traction speed reducer comprising: sun roller, centered on rotary shaft
It is rotated；Multiple planetary rollers configure around the sun roller；A pair of circular inner ring, with the multiple planetary rollers
Contact；And bracket, it keeps the planetary rollers and is pivoted about with the rotary shaft；The multiple planetary rollers respectively with
The contact of both the sun roller and the inner ring, and receive power from the sun roller, thus when carrying out rotation with institute
It states and revolves centered on rotary shaft, the bracket has the contact surface opposite with the outer peripheral surface of the planetary rollers, and the row
The outer peripheral surface of star roller with it is described
Contact surface contacts on the circumferencial direction centered on the rotary shaft.
The effect of invention
According to the 1st illustrative invention of the application, the bracket pin that can support to rotation each planetary rollers is not needed.Therefore,
Number of components can be reduced and make to draw speed reducer miniaturization.
Detailed description of the invention
[Fig. 1] Fig. 1 is the perspective view of the speed reducer with motor of the 1st embodiment.
[Fig. 2] Fig. 2 is the profilograph of the speed reducer with motor of the 1st embodiment.
[Fig. 3] Fig. 3 is the drawing in side sectional elevation of the traction speed reducer of the 1st embodiment.
[Fig. 4] Fig. 4 is the drawing in side sectional elevation of the traction speed reducer of the 1st embodiment.
[Fig. 5] Fig. 5 is the drawing in side sectional elevation of the traction speed reducer of the 1st embodiment.
[Fig. 6] Fig. 6 is the profilograph of the speed reducer with motor of the 2nd embodiment.
[Fig. 7] Fig. 7 is the drawing in side sectional elevation of the traction speed reducer of the 2nd embodiment.
[Fig. 8] Fig. 8 is the drawing in side sectional elevation of the traction speed reducer of the 2nd embodiment.
[Fig. 9] Fig. 9 is the partial longitudinal section figure of the speed reducer with motor of the 3rd embodiment.
Specific embodiment
Hereinafter, one side is illustrated referring to attached drawing, one in face of illustrative embodiment of the invention.In addition, in this Shen
Please in, by the direction parallel with the rotary shaft of sun roller be known as " axis direction ", will with the direction of rotating shaft direct cross be known as " radial direction ",
It will be known as " circumferencial direction " along the direction of the circular arc centered on rotary shaft.But " the parallel direction " also includes big
Cause parallel direction.In addition, " the orthogonal direction " also includes substantially orthogonal direction.In addition, for ease of description, below
Right side in Fig. 1 is known as " input side ", the left side in Fig. 1 is known as " outlet side ".
Fig. 1 is the perspective view of the speed reducer 10 with motor comprising traction speed reducer 1 of present embodiment.Fig. 2 is
The profilograph of the speed reducer 10 with motor comprising traction speed reducer 1 of present embodiment.This subtracting with motor
Fast machine 10 is the rotation that the rotary motion of the 1st winding number obtained from motor 11 is converted into 2nd winding number lower than the 1st winding number
The speed reducer for rotating output shaft 90 after transhipment is dynamic.Traction speed reducer 1 of the invention and the speed reducer 10 with motor are for example
In precision component for appliances etc..
As shown in Figures 1 and 2, the speed reducer 10 with motor of present embodiment have motor 11, mounting plate 12 and
Draw speed reducer 1.
Motor 11 is the motor as the power source of the speed reducer 10 with motor.Motor 11 subtracts with aftermentioned traction
The sun roller 20 of fast machine 1 connects.If drive motor 11, sun roller 20 is pivoted about with rotary shaft 9.
Mounting plate 12 is for that will draw the component for the plate that speed reducer 1 is mounted on motor 11.Mounting plate 12 relative to
Rotary shaft 9 generally perpendicularly configures.Mounting plate 12 is fixed on the motor shell as the outline border of motor 11.Motor shell and mounting plate
12 are fixed by setting tools such as screws.But motor shell can also be fixed with mounting plate 12 by other methods.
Traction speed reducer 1 is the device being conveyed in output shaft 90 after making the rotary motion of motor 11 slow down.It draws herein
In speed reducer 1, gear is not used, and uses the planetary gear speed reducing mechanism of so-called trailed model, the planetary reducer of the trailed model
Structure is rotated when making the outer peripheral surface of sun roller 20 and the outer peripheral surface of multiple planetary rollers 30 contacts with each other, and is thus conveyed dynamic
Power.
As shown in Fig. 2, the traction speed reducer 1 of present embodiment includes a sun roller 20, multiple planetary rollers 30, inner ring
40, bracket 50, bracket bearing 60, elastic component 70, shell 80 and output shaft 90.
Sun roller 20 is the columned component coaxially configured with rotary shaft 9.Sun roller 20 be located at axis direction it is defeated
The motor 11 for entering side links.If drive motor 11, during sun roller 20 by the power that receives from motor 11, with rotary shaft 9 is
The heart and rotated with the 1st winding number.In the present embodiment, the output shaft (output shaft) of motor 11 becomes sun roller
20.In this way, if the output shaft of motor 11 and sun roller 20 are set as single part, zero of the speed reducer 10 with motor
Number of packages is reduced.Therefore, it is easy to minimize the speed reducer 10 with motor.But it is also possible to be different from the output of motor 11
The sun roller rotated together with output shaft is arranged in axis.
Fig. 3 is the A-A sectional view for drawing Fig. 1 of speed reducer 1.Multiple configurations of planetary rollers 30 are around sun roller 20.Such as
Shown in Fig. 3, in the present embodiment, around sun roller 20, equally spaced there are three planetary rollers for configuration in a circumferential direction
30。
Multiple planetary rollers 30 are respectively provided with plectane portion 31 and a pair of of axle portion 32.Plectane portion 31 is with will be from the input side of axis direction
The center observed becomes parallel side relative to rotary shaft 9 with the straight line for the central link that the outlet side from axis direction is observed
Formula configures around sun roller 20.As shown in Figures 2 and 3, the peripheral part in plectane portion 31 and the peripheral part of sun roller 20 connect
Touching.Input side and outlet side of a pair of of axle portion 32 with rotary shaft 9 in parallel from the center in plectane portion 31 towards axis direction extend.At this
In embodiment, plectane portion 31 and a pair of of axle portion 32 are made of a component.In addition, each axle portion 32 is in axis direction and plectane portion
On the end of 31 opposite sides, there is circular inclined surface 33.Inclined surface 33 with towards the front end of axle portion 32 and undergauge
Mode is tilted relative to axis direction.As long as in addition, periphery is circle, surface shape when plectane portion 31 is from axis direction
The shape being also possible to other than plate.
Inner ring 40 is the component of a pair of the annular shape contacted with multiple planetary rollers 30.The inner ring 40 of present embodiment includes solid
Determine inner ring 41 and movable inner ring 42.As shown in Fig. 2, the fixation inner ring 41 of present embodiment is located at than plectane portion 31 closer to axis side
To input side, and position in axial direction has been fixed.In addition, movable inner ring 42 is located at than plectane portion 31 closer to axis side
To outlet side, and can move in axial direction.But it is also possible to by the configuration of movable inner ring 42 than plectane portion 31 closer to axis
The input side in direction, by the fixed configuration of inner ring 41 in the outlet side than plectane portion 31 closer to axis direction.
Fig. 4 is the B-B sectional view for drawing Fig. 1 of speed reducer 1.Around sun roller 20, multiple planetary rollers 30 are by the sun
Roller 20 and inner ring 40 rotatably support.As shown in figure 4, the peripheral part of multiple planetary rollers 30 and the inner peripheral portion of inner ring 40 connect
Touching.If sun roller 20 is pivoted about with rotary shaft 9, multiple planetary rollers 30 receive power from sun roller 20.Moreover, more
A planetary rollers 30 are revolved centered on rotary shaft 9 around sun roller 20 when carrying out rotation.
In addition, as shown in Fig. 2, the inner ring 40 of present embodiment is contacted with the inclined surface 33 of axle portion 32.It can inhibit diameter as a result,
To width, and contact inner ring 40 with planetary rollers 30.In addition, the plectane portion 31 of planetary rollers 30 and axle portion 32 are same component,
Therefore it is not provided with other contact member between inner ring 40 and planetary rollers 30, the pressure of inner ring 40 can be directly conducted to planet
In roller 30.As a result, the number of components of traction speed reducer 1 can be reduced.
Fig. 5 is the C-C sectional view for drawing Fig. 1 of speed reducer 1.Bracket 50 keeps multiple planetary rollers 30 and with rotary shaft 9
Center is rotated.As shown in figure 5, bracket 50 has the contact surface 54 opposite with the outer peripheral surface of the axle portion 32 of planetary rollers 30.Axis
Among the outer peripheral surface in portion 32, at least part and the contact surface 54 in the face on front side of the direction of rotation of the revolution of planetary rollers 30 exist
It is contacted on circumferencial direction.That is, at least part of contact surface 54 and the outer peripheral surface of axle portion 32 is in the circumference centered on rotary shaft 9
It is contacted on direction.As a result, around sun roller 20, each planetary rollers 30 can be supported to rotation.In this way, as planetary rollers 30
The axle portion 32 of a part supported by bracket 50.It is therefore not necessary to which the component as bracket pin is in addition arranged.As a result, can subtract
Lack number of components and makes to draw the miniaturization of speed reducer 1.
In addition, the bracket 50 of present embodiment has multiple receiving portions 56 as shown in Fig. 2, Fig. 4 and Fig. 5.Multiple receiving portions
56 are arranged on the circumferencial direction centered on rotary shaft 9, and radially outside is opened wide respectively.Moreover, the axis of multiple planetary rollers 30
Portion 32 is housed in receiving portion 56.Therefore, when speed reducer 1 is drawn in manufacture, can relative to bracket 50 receiving portion 56 from diameter
It is inserted into planetary rollers 30 outward.The assembling for drawing speed reducer 1 as a result, becomes easy.
In addition, the bracket 50 of present embodiment is made of single component.It therefore, include the feelings of multiple components with bracket 50
Condition is compared, and number of components can be reduced.Traction speed reducer 1 can as a result, miniaturised.In addition, the assembling of traction speed reducer 1 becomes
It must be easier.
Bracket bearing 60 is pivotably supported bracket 50 centered on rotary shaft 9.As shown in Fig. 2, the support of present embodiment
Frame bearing 60 is contacted at least part of the outer peripheral surface of bracket 50.In turn, bracket bearing 60 and the axis direction of bracket 50 is defeated
The end face contact of side out.The movement of the radial direction and axis direction of bracket 50 is restricted as a result, and is held stably.
Elastic component 70 is the component to pressurize towards the input side of axis direction to movable inner ring 42.Elastic component 70 be
The circular component to stretch in axis direction.For example, waveform spring (wave spring) elastic component 70 can be used for.Elasticity
State of the component 70 to have been compressed in axial direction compared with natural length is configured in bracket bearing 60 and movable inner ring 42
Between.Therefore, it is pressurizeed towards input side to movable inner ring 42 by the bounce of elastic component 70.
As described above, fixed inner ring 41 and movable inner ring 42 are contacted with the inclined surface 33 of the axle portion 32 of planetary rollers 30.Therefore,
If the input side towards axis direction pressurizes to movable inner ring 42, via inclined surface 33 and radially inside receives to press axle portion 32
Pressure.That is, by fixed inner ring 41 and movable inner ring 42, radially inside pressurizes to multiple planetary rollers 30.
In addition, the elastic component 70 of present embodiment configures in the space of the radial outside of bracket 50.As a result, with will hold in the palm
The situation of frame 50 and the configuration of elastic component 70 on different axis direction positions is compared, and the axis direction of traction speed reducer 1 can be reduced
Size.As a result, traction speed reducer 1 can be made to miniaturise.
Shell 80 is at least to accommodate sun roller 20, multiple planetary rollers 30, a pair of of inner ring 40, bracket 50 and bracket axis internal
Hold 60 component.Shell 80 has the cylindric inner peripheral surface for the periphery at least surrounding inner ring 40.
As shown in Fig. 2, the shell 80 of present embodiment has the hook portion 81 that radially inside extends.Hook portion 81 for example passes through
A part of the circumferencial direction of the ora terminalis of the outlet side of shell 80 is riveted to be formed.Hook portion 81 and bracket bearing 60 are in axis
It is contacted on direction.It can be easy to carry out the positioning of the axis direction of the bracket bearing 60 relative to shell 80 as a result,.As a result, can
Easily assembling traction speed reducer 1.In addition, hook portion 81 connects on the circumferencial direction centered on rotary shaft 9 with bracket bearing 60
Touching.It can be easily prevented from the relative rotation of the bracket bearing 60 relative to shell 80 as a result,.
In addition, as shown in figure 4, the inner ring 40 of present embodiment is recessed with radially inside in a part of outer peripheral surface
It falls into and surface is multiple 1st rotation prevention portions 43 of planar portions.In addition, the shell 80 of present embodiment have radially inside protrusion,
And the face of radially inner side is multiple 2nd rotation prevention portions 82 of planar portions.Multiple 1st rotation prevention portions 43 are in the circle centered on rotary shaft 9
It is equally spaced configured in circumferential direction.Multiple 2nd rotation prevention portions 82 are equally spaced matched on the circumferencial direction centered on rotary shaft 9
It sets.1st rotation prevention portion 43 is embedded in the 2nd rotation prevention portion 82, and the planar portions of the 1st rotation prevention portion 43 are contacted with the planar portions of the 2nd rotation prevention portion 82.
This prevents the relative rotation of the inner ring 40 relative to shell 80.As a result, the spin stabilization of planetary rollers 30 and bracket 50.
As long as in addition, multiple 1st rotation prevention portions 43 are formed in such a way that a part of the outer peripheral surface of inner ring 40 becomes non-positive round
, it is not limited to the structure of Fig. 4.In addition, as long as multiple 2nd rotation prevention portions 82 are become with a part of the inner peripheral surface of shell 80
The mode of non-positive round is formed, and the structure of Fig. 4 is not limited to.
Output shaft 90 is the columned component extended along the outlet side of rotary shaft 9 towards axis direction.Output shaft 90 is for example
It is obtained and the end of the outlet side of the axis direction from bracket 50 is press-fit into towards in the recess portion 55 of the input side recess of axis direction
To fixation.But other methods also can be used in the fixing means of output shaft 90 and bracket 50.Output shaft 90 and bracket 50 are together
It is pivoted about with rotary shaft 9.
Multiple planetary rollers 30 are contacted with sun roller 20, fixed inner ring 41 and movable inner ring 42 always respectively.Moreover, saving sketch map
The lubricant shown is between sun roller 20 and planetary rollers 30.Traction is generated between sun roller 20 and planetary rollers 30 as a result,.Separately
Outside, the lubricant of illustration omitted is between planetary rollers 30 and inner ring 40.It generates and leads between planetary rollers 30 and inner ring 40 as a result,
Draw.If sun roller 20 is rotated by the driving force of motor 11, multiple planetary rollers 30 receive dynamic from sun roller 20
Power, and rotation is carried out by the traction between sun roller 20.In addition, multiple planetary rollers 30 pass through leading between inner ring 40
Draw, revolves around rotary shaft 9 along inner ring 40.At this point, the winding number of the revolution of planetary rollers 30 becomes than the 1st time
The 2nd low winding number of revolution.
If multiple planetary rollers 30 are revolved with the 2nd winding number after slowing down, it is accompanied by this, bracket 50 is also with rotary shaft
Centered on 9, rotated with the 2nd winding number.In addition, if bracket 50 is rotated, the output shaft 90 that is fixed on bracket 50
Also it centered on rotary shaft 9, is rotated with the 2nd winding number.The rotary motion of the 1st winding number of motor 11 is converted as a result,
At output after the rotary motion of the 2nd winding number lower than the 1st winding number into output shaft 90.
Then, the speed reducer 10A to the 2nd embodiment with motor and traction speed reducer 1A are illustrated.Fig. 6 is
The profilograph of the speed reducer with motor comprising traction speed reducer 1A of 2nd embodiment.Fig. 7 is the 2nd embodiment
Traction speed reducer 1A Fig. 6 D-D sectional view.Fig. 8 is the E-E section of Fig. 6 of the traction speed reducer 1A of the 2nd embodiment
Figure.
In the same manner as the speed reducer 10 with motor of the 1st embodiment, this with motor speed reducer 10A be by
After the rotary motion of the 1st winding number obtained from motor 11A is converted into the rotary motion of the 2nd winding number lower than the 1st winding number
The speed reducer for rotating output shaft 90A.
As shown in fig. 6, the traction speed reducer 1A of present embodiment includes sun roller 20A, multiple planetary rollers 30A, interior
Ring 40A, bracket 50A, bracket bearing 60A, elastic component 70A, shell 80A and output shaft 90A.
Sun roller 20A is the columned component coaxially configured with rotary shaft 9A.Sun roller 20A be located at axis direction
The motor 11A of input side links.If drive motor 11A, sun roller 20A is by the power that receives from motor 11A, with rotary shaft
It is rotated centered on 9A with the 1st winding number.
Multiple planetary rollers 30A are respectively provided with plectane portion 31A and a pair of of axle portion 32A.Plectane portion 31A is with will be from the defeated of axis direction
The straight line for entering the central link that the center that side is observed is observed with the outlet side from axis direction becomes flat relative to rotary shaft 9A
Capable mode configures around sun roller 20A.As shown in FIG. 6 and 7, the peripheral part of plectane portion 31A is with sun roller 20A's
Peripheral part contact.A pair of of axle portion 32A and rotary shaft 9A is in parallel from the central input side and output towards axis direction of plectane portion 31A
Side extends.Each axle portion 32A has circular inclined surface 33A on the end with plectane portion 31A opposite side of axis direction.Incline
Inclined-plane 33A relative to axis direction to tilt with towards the front end of axle portion 32A and in a manner of undergauge.In addition, plectane portion 31A is only
Periphery is circle when will be from axis direction, and surface shape is also possible to the shape other than plate.
Inner ring 40A is the component of a pair of the annular shape contacted with multiple planetary rollers 30A.The inner ring 40A packet of present embodiment
Containing fixed inner ring 41A and movable inner ring 42A.As shown in fig. 6, the fixation inner ring 41A of present embodiment is located at more than plectane portion 31A
Position by the outlet side of proximal direction, and in axial direction has been fixed.In addition, movable inner ring 42A is located at than plectane portion 31
Closer to the input side of axis direction, and can move in axial direction.
Around sun roller 20A, multiple planetary rollers 30A are rotatably supported by sun roller 20A and inner ring 40A.Separately
Outside, the peripheral part of multiple planetary rollers 30A is contacted with the inner peripheral portion of inner ring 40A.Therefore, if during sun roller 20A with rotary shaft 9A is
The heart is rotated, then multiple planetary rollers 30 receive power from sun roller 20A.Moreover, multiple planetary rollers 30A are sun roller 20A's
Around, it is revolved centered on rotary shaft 9A when carrying out rotation.In a same manner as in the first embodiment, present embodiment
Inner ring 40A contacted with the inclined surface 33A of axle portion 32A.
Bracket 50A is kept multiple planetary rollers 30A and is pivoted about with rotary shaft 9A.The bracket of present embodiment
There are two the 1st carrier member 511A, 512A, the 2nd carrier member 52A and multiple carrier bar 53A for 50A tool.
1st carrier member 51A is the disk-shaped component with contact surface 54A.As shown in Fig. 6 and Fig. 8, two the 1st supports
One the 1st carrier member 511A in frame member via contact surface 54A, on the circumferencial direction centered on rotary shaft 9A with
At least part of the outer peripheral surface of the axle portion 32A of the outlet side of the axis direction of planetary rollers 30A contacts.In addition, another the 1st support
Frame member 512A is defeated with the axis direction of planetary rollers 30A on the circumferencial direction centered on rotary shaft 9A via contact surface 54A
Enter at least part contact of the outer peripheral surface of the axle portion 32A of side.As a result, around sun roller 20A, each planetary rollers 30A can be certainly
It is supported with turning.2nd carrier member 52A configuration than the 1st carrier member 511A, 512A and planetary rollers 30A closer to axis side
To outlet side.
Carrier bar 53A is the columned component extended in axial direction.As shown in fig. 7, in the present embodiment, three
Carrier bar 53A is equally spaced configured in a circumferential direction around sun roller 20A and between planetary rollers 30A.Carrier bar 53A's
The end of the input side of axis direction is fixed on the 1st carrier member 51A.In addition, the end of the outlet side of the axis direction of carrier bar 53A
Portion is fixed on the 2nd carrier member 52A.As a result, the 1st carrier member 51A and the 2nd carrier member 52A with planetary rollers 30A rotation
Turn, is pivoted about with rotary shaft 9A.
Bracket bearing 60A is pivotably supported the 2nd carrier member 52A centered on rotary shaft 9A.As shown in fig. 6, this reality
The bracket bearing 60A for applying mode is contacted at least part of the outer peripheral surface of bracket 50A.In turn, bracket bearing 60A and bracket
The end face of the outlet side of the axis direction of 50A contacts.The movement of the radial direction and axis direction of bracket 50A is restricted as a result, and steady
Surely it keeps.
Elastic component 70A is the component to pressurize towards the outlet side of axis direction to movable inner ring 42A.Elastic component 70A
It is circular component flexible in axial direction.For example, waveform spring can be used for elastic component 70A.Elastic component 70A with
The state compressed in axial direction compared with natural length configures between mounting plate 12A and movable inner ring 42A.Cause
This, pressurizes to movable inner ring 42A towards outlet side by the bounce of elastic component 70A.If towards the outlet side of axis direction
It pressurizes to movable inner ring 42A, then via inclined surface 33A and radially inside receives pressing force to axle portion 32A.That is, by solid
Determine inner ring 41A and movable inner ring 42A and radially inside pressurizes to multiple planetary rollers 30A.
Shell 80A be it is internal at least accommodate sun roller 20A, multiple planetary rollers 30A, a pair of of inner ring 40A, bracket 50A and
The component of bracket bearing 60A.
Output shaft 90A is the columned component extended along the outlet side of rotary shaft 9A towards axis direction.Output shaft 90A
As fixed and being press-fit into the through hole 55A that the center of the 2nd carrier member 52A is arranged in.Output shaft 90A and
2 carrier member 52A are pivoted about together with rotary shaft 9A.
As shown in fig. 6, the inner ring 40A of present embodiment has multiple the as non-positive round in a part of outer peripheral surface
1 rotation prevention portion 43A.In addition, the shell 80A of present embodiment has multiple 2 as non-positive round in a part of inner peripheral surface
Rotation prevention portion 82A.Multiple 1st rotation prevention portion 43A are equally spaced configured on the circumferencial direction centered on rotary shaft 9A.Multiple 2
Rotation prevention portion 82A is equally spaced configured on the circumferencial direction centered on rotary shaft 9A.Moreover, the 1st rotation prevention portion 43A stops with the 2nd
Transfer part 82A contact.It can be easy to carry out the positioning of the circumferencial direction of the bracket 50A relative to shell 80A as a result,.As a result, can
Easily assembling traction speed reducer 1A.In addition, the relative rotation of the inner ring 40A relative to shell 80A can be prevented.As a result, row
The spin stabilization of star roller 30A and bracket 50A.
Multiple planetary rollers 30A are contacted with sun roller 20A, fixed inner ring 41A and movable inner ring 42A always respectively.Moreover, saving
The lubricant that sketch map shows is between sun roller 20A and planetary rollers 30A.It is produced between sun roller 20A and planetary rollers 30A as a result,
Raw traction.In addition, the lubricant of illustration omitted is between planetary rollers 30A and inner ring 40A.As a result, in planetary rollers 30 and inner ring
Traction is generated between 40.If sun roller 20A is rotated by the driving force of motor 11A, multiple planetary rollers 30A receive to come
Rotation is carried out from the power of sun roller 20A, and by the traction between sun roller 20A.In addition, multiple planetary rollers 30A are logical
The traction between inner ring 40A is crossed, is revolved around rotary shaft 9A along inner ring 40A.At this point, planetary rollers 30A
The winding number of revolution becomes 2nd winding number lower than the 1st winding number.
If multiple planetary rollers 30A are revolved with the 2nd winding number after slowing down, it is accompanied by this, the 1st carrier member 51A
With the 2nd carrier member 52A that is fixed on carrier bar 53A also together centered on rotary shaft 9A, revolved with the 2nd winding number
Turn.Moreover, the output shaft 90A being fixed on the 2nd carrier member 52A also centered on rotary shaft 9A, is revolved with the 2nd winding number
Turn.After the rotary motion of the 1st winding number of motor is converted into the rotary motion of the 2nd winding number lower than the 1st winding number as a result,
Output is into output shaft 90A.
Then, the speed reducer 10B to the 3rd embodiment with motor and traction speed reducer 1B are illustrated.Fig. 9 is
The partial longitudinal section figure of the speed reducer 10B with motor comprising traction speed reducer 1B of 3rd embodiment.In addition, following
It is illustrated centered on the difference of the 1st embodiment, about part identical with the 1st embodiment, omits and repeat to say
It is bright.
In the same manner as the speed reducer 10 with motor of the 1st embodiment, this with motor speed reducer 10B be by
The rotary motion of the 1st winding number obtained from motor (illustration omitted) is converted into the rotation of 2nd winding number lower than the 1st winding number
The speed reducer for rotating output shaft 90B after movement.
As shown in figure 9, the bracket bearing 60B of the traction speed reducer 1B of present embodiment, which has, includes the 1st radial bearing surface
Multiple radial bearing surfaces of 110B and the 2nd radial bearing surface 111B.1st radial bearing surface 110B and the 2nd radial bearing surface 111B
It extends on the circumferencial direction centered on rotary shaft 9B, and is separated from each other in axial direction annular in shapely respectively.1st is radial
Bearing surface 110B is located at than the 2nd radial bearing surface 111B closer to the input side of axis direction and the position of radial outside.Bracket axis
Periphery face contact of the 60B on the 1st radial bearing surface 110B and the 2nd radial bearing surface 111B with bracket 50B is held, and can be revolved
Turn ground Support bracket 50B.In addition, multiple radial bearing surfaces also may include three or more radial bearing surfaces.
Space 120B is formed between the 1st radial bearing surface 110B and the 2nd radial bearing surface 111B.Space 120B, which is played, to be stored
The effect of the aftermentioned lubricating oil of product, thus inhibits leakage of the lubricating oil from the side output shaft 90B.In addition, passing through phase in axial direction
The 1st radial bearing surface 110B mutually separated and the 2nd radial bearing surface 111B carrys out Support bracket 50B, therefore can prevent bracket 50B from existing
It is rotated in the state of having tilted.
In addition, the inner peripheral surface of bracket bearing 60B has relative to axis direction vertically or tiltedly widened cricoid bearing
Segment difference face 600B.In addition, the outer peripheral surface of bracket 50B has relative to axis direction vertically or tiltedly widened cricoid bracket section
Poor face 500B.Bearing segment difference face 600B and at least part of bracket segment difference face 500B are opposite in axial direction.The space
120B by bearing segment difference face 600B, bracket segment difference face 500B, bracket bearing 60B inner peripheral surface in relative to axis direction in parallel
The cricoid face extended in parallel relative to axis direction in the cricoid face of extension and the outer peripheral surface of bracket 50B is formed.
In turn, the 1st radial bearing surface 110B be located at least in than bearing segment difference face 600B and bracket segment difference face 500B closer to
The position of the input side of axis direction, the 2nd radial bearing surface 111B are located at least in than bearing segment difference face 600B and bracket segment difference face
500B closer to axis direction outlet side position.That is, the 1st radial bearing surface 110B and the 2nd radial bearing surface 111B be located at than
Position of the bearing segment difference face 600B and bracket segment difference face 500B closer to the outside of axis direction.It can not make bracket 50B and support as a result,
The structure of frame bearing 60B exceedingly complicates, and is readily formed space 120B.But the 1st radial bearing surface 110B and the 2nd
The positional relationship of radial bearing surface 111B in axial direction may be reversed.
Preferably it is enclosed between at least one of multiple planetary rollers 30B and sun roller (illustration omitted) and inner ring 40B
1st lubricating oil is as lubricant.In the case, it is generally desirable to viscosity is enclosed in the 120B of space than the 1st lubricating oil viscosity
The 2nd high lubricating oil (illustration omitted).The 1st lubricating oil court in traction speed reducer 1B can be prevented by the 2nd lubricating oil as a result,
Output shaft 90B is flowed and is leaked out in side.In addition, as long as space 120B is formed at least two radial directions in multiple radial bearing surfaces
Space between bearing surface is also possible to be formed in different from the 1st radial bearing surface 110B and the 2nd radial bearing surface 111B
Radial bearing surface between space.
More than, illustrative embodiment of the invention is illustrated, but the present invention is not limited to the implementations
Mode.
The speed reducer with motor and traction speed reducer of the embodiment are the precision components for appliances
Middle person.But traction speed reducer of the invention and the speed reducer with motor be also possible to for industrial machinery etc. other
With on the way.
In addition, in said embodiment, around sun roller, equally spaced there are three rows for configuration in a circumferential direction
Star roller.But the quantity for drawing planetary rollers possessed by speed reducer is also possible to two, is also possible to four or more.
In addition, in said embodiment, elastic component is circular component flexible in axial direction.But bullet
As long as property component generates bounce person in axial direction, for example, it can be equally spaced arrange multiple helical springs
Winner in a circumferential direction is arranged, is also possible to comprising other components person.
In addition, three carrier bars are equally spaced configured in a circumferential direction in sun roller in the 2nd embodiment
Between surrounding and planetary rollers.But the quantity of carrier bar is also possible to two, is also possible to four or more.
Constitute take turns in deceleration device each component material in, as long as such as using high-intensitive metal.But
As long as the material of the load when material of each component can bear use, may not be defined in metal.It, can also for lightweight
To use resin in the material of the component of a part.
In addition, the shape about traction speed reducer and the discreet portions of the speed reducer with motor, it can also be with this Shen
Each shape shown in figure please is different.Alternatively, it is also possible in the range of not generating contradiction, by the embodiment and deformation
Each element proper combination appeared in example.
Industrial availability
The present invention can be used for drawing speed reducer and the speed reducer with motor.
The explanation of symbol
1,1A, 1B: traction speed reducer
9,9A, 9B: rotary shaft
10,10A, 10B: the speed reducer with motor
11,11A: motor
12,12A: mounting plate
20,20A: sun roller
30,30A, 30B: planetary rollers
31,31A: plectane portion
32,32A: axle portion
33,33A: inclined surface
40,40A, 40B: inner ring
41,41A: fixed inner ring
42,42A: movable inner ring
43, the 43A: the 1 rotation prevention portion
50,50A, 50B: bracket
511A, 512A: the 1st carrier member
52A: the 2 carrier member
53A: carrier bar
54,54A: contact surface
55: recess portion
55A: through hole
56: receiving portion
60,60A, 60B: bracket bearing
70,70A: elastic component
80,80A: shell
81: hook portion
82, the 82A: the 2 rotation prevention portion
90,90A, 90B: output shaft
110B: the 1 radial bearing surface
111B: the 2 radial bearing surface
120B: space
500B: bracket segment difference face
600B: bearing segment difference face
Claims (18)
1. a kind of traction speed reducer, comprising:
Sun roller, is pivoted about with rotary shaft；
Multiple planetary rollers configure around the sun roller；
A pair of circular inner ring, contacts with the multiple planetary rollers；And
Bracket is kept the planetary rollers and is pivoted about with the rotary shaft；
The multiple planetary rollers are contacted with both the sun roller and the inner ring respectively, and receive power from the sun roller,
Thus it is revolved centered on the rotary shaft when carrying out rotation,
The bracket has the contact surface opposite with the outer peripheral surface of the planetary rollers, and
The outer peripheral surface of the planetary rollers contacts on the circumferencial direction centered on the rotary shaft with the contact surface.
2. traction speed reducer according to claim 1, wherein the planetary rollers include
Plectane portion is contacted with the sun roller；And
Axle portion extends from the center in the plectane portion towards the two sides of axis direction；And
The contact surface of the bracket contacts in a circumferential direction with the outer peripheral surface of the axle portion.
3. traction speed reducer according to claim 2, wherein the axle portion is in axis direction and plectane portion opposite side
End on, there is inclined surface relative to the inclined annular shape of axis direction, and
The inner ring and the inclination face contact.
4. traction speed reducer according to claim 2 or 3, wherein the bracket has multiple receiving portions, the multiple receipts
Appearance portion is arranged on the circumferencial direction centered on the rotary shaft, and radially outside is opened wide respectively, and
The axle portion is accommodated in the receiving portion.
5. traction speed reducer according to claim 2 further includes elastic component flexible in axial direction,
The axle portion has the inclined surface relative to the inclined annular shape of axis direction,
The pair of inner ring includes
Fixed inner ring, is located at than the plectane portion closer to axis direction side, and position in axial direction has been fixed；And
Movable inner ring is located at than the plectane portion closer to the axis direction other side, can move in axial direction；
The elastic component presses the movable inner ring in axis direction side, and
Radially inside pressurizes to the planetary rollers to the pair of inner ring.
6. traction speed reducer according to claim 5, wherein the elastic component is located at the radial outside of the bracket.
7. traction speed reducer according to any one of claim 1 to 6, wherein input side of the sun roller from axis direction
Receive power, and
And then there is output shaft, the output shaft is fixed on the bracket, along the rotary shaft towards axis direction with it is described
The opposite outlet side of input side extends.
8. traction speed reducer according to any one of claim 1 to 7 further includes the support for being pivotably supported the bracket
Frame bearing, and
The bracket bearing is contacted with the end face of the outer peripheral surface of the bracket and axis direction.
9. traction speed reducer according to claim 8, wherein the bracket bearing has and to be separated from each other in axial direction
Respectively circular multiple radial bearing surfaces,
The bracket bearing in the multiple radial bearing surface with the periphery face contact of the bracket.
10. traction speed reducer according to claim 9, wherein the bracket bearing has vertical relative to axis direction or inclines
Tiltedly widened cricoid bearing segment difference face,
The bracket has relative to axis direction vertically or tiltedly widened cricoid bracket segment difference face,
Bearing segment difference face and at least part in bracket segment difference face are opposite in axial direction, and
The multiple radial bearing surface is located at least in than bearing segment difference face and bracket segment difference face closer to axis direction one
Side and than bearing segment difference face and bracket segment difference face closer to the position of the axis direction other side.
11. traction speed reducer according to claim 9 or 10, wherein in the multiple planetary rollers and the sun roller and institute
Stating has the 1st lubricating oil between at least one of inner ring,
There is the 2nd lubricating oil in space between at least two radial bearing surfaces for being formed in the multiple radial bearing surface,
And
2nd lubricating oil viscosity is higher than the 1st lubricating oil viscosity.
12. traction speed reducer according to claim 8, further includes shell, the shell has the circle for surrounding the inner ring
The inner peripheral surface of tubular,
The shell has the hook portion that radially inside extends, and
The hook portion contacts in axial direction with the bracket bearing.
13. traction speed reducer according to claim 12, wherein the hook portion and the bracket bearing are with the rotation
It is contacted on circumferencial direction centered on axis.
14. traction speed reducer according to any one of claim 1 to 8, further includes shell, the shell, which has, surrounds institute
The cylindric inner peripheral surface of inner ring is stated,
The inner ring has the 1st rotation prevention portion of non-positive round in a part of outer peripheral surface,
The shell has the 2nd rotation prevention portion of non-positive round in a part of the inner peripheral surface, and
1st rotation prevention portion is contacted with the 2nd rotation prevention portion.
15. traction speed reducer according to claim 14, wherein the inner ring has centered on the rotary shaft
Multiple 1st rotation prevention portions equally spaced configured on circumferencial direction, and
The shell has multiple 2nd rotation stops equally spaced configured on the circumferencial direction centered on the rotary shaft
Portion.
16. according to claim 1 to traction speed reducer described in any one of 15, wherein the bracket is single component.
17. according to claim 1 to traction speed reducer described in any one of 15, wherein the bracket includes
Disk-shaped 1st carrier member has the contact surface；
2nd carrier member configures on the axis direction position different from the 1st carrier member；And
Carrier bar extends in axial direction；
One end of the axis direction of the carrier bar is fixed on the 1st carrier member, and
The other end of the axis direction of the carrier bar is fixed on the 2nd carrier member.
18. a kind of speed reducer with motor, comprising:
According to claim 1 to traction speed reducer described in any one of 17；And
Motor pivots about the sun roller with the rotary shaft.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016097991 | 2016-05-16 | ||
| JP2016-097991 | 2016-05-16 | ||
| JP2016-149242 | 2016-07-29 | ||
| JP2016149242A JP2017207193A (en) | 2016-05-16 | 2016-07-29 | Traction speed reducer and speed reducer with electric motor |
| PCT/JP2017/018327 WO2017199941A1 (en) | 2016-05-16 | 2017-05-16 | Traction speed reducer and electric motor–equipped speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109154367A true CN109154367A (en) | 2019-01-04 |
Family
ID=60415413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780029857.8A Pending CN109154367A (en) | 2016-05-16 | 2017-05-16 | Draw speed reducer and the speed reducer with motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2017207193A (en) |
| CN (1) | CN109154367A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111750055A (en) * | 2019-03-28 | 2020-10-09 | 日本电产新宝株式会社 | Traction speed reducer |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020102939A (en) * | 2018-12-21 | 2020-07-02 | 日本電産株式会社 | Actuator |
| JP2020133719A (en) * | 2019-02-15 | 2020-08-31 | 日本電産シンポ株式会社 | Traction transmission and actuator |
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| JPS54140153U (en) * | 1978-03-24 | 1979-09-28 | ||
| JPS6237561A (en) * | 1985-08-09 | 1987-02-18 | Matsushita Electric Works Ltd | Reduction gear |
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| JP6354971B2 (en) * | 2013-06-07 | 2018-07-11 | 株式会社不二越 | Planetary roller friction transmission |
| JP6448942B2 (en) * | 2014-07-31 | 2019-01-09 | 日本電産シンポ株式会社 | Traction power transmission reduction device and motor with reduction device |
| JP2016070285A (en) * | 2014-09-26 | 2016-05-09 | 日本電産シンポ株式会社 | Speed reducer |
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|---|---|---|---|---|
| WO1988006688A1 (en) * | 1987-02-27 | 1988-09-07 | Sumitomo Heavy Industries, Ltd. | Epicyclic reduction gear |
| JP2000065165A (en) * | 1998-08-20 | 2000-03-03 | Namiki Precision Jewel Co Ltd | Planetary gear speed reducer and assembling method therefor |
| JP2000130529A (en) * | 1998-10-28 | 2000-05-12 | Ntn Corp | Friction type multistage roller transmission |
| JP2002171721A (en) * | 2000-12-01 | 2002-06-14 | Nidec-Shimpo Corp | Rotating drive unit |
| CN204213283U (en) * | 2013-11-01 | 2015-03-18 | 日本电产新宝株式会社 | Driving-force transmission mechanism |
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| CN111750055A (en) * | 2019-03-28 | 2020-10-09 | 日本电产新宝株式会社 | Traction speed reducer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017207193A (en) | 2017-11-24 |
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