CN205534072U - Power transfer device of planet roll -type - Google Patents
Power transfer device of planet roll -type Download PDFInfo
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- CN205534072U CN205534072U CN201620156361.XU CN201620156361U CN205534072U CN 205534072 U CN205534072 U CN 205534072U CN 201620156361 U CN201620156361 U CN 201620156361U CN 205534072 U CN205534072 U CN 205534072U
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- 230000000452 restraining effect Effects 0.000 abstract 2
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Abstract
The utility model relates to a power transfer device of planet roll -type has: sun roller, it is by the shell supporting for using the central axis rotatory as the center, the inner ring of tube -shape, it is held in the shell, planet roller more than two, they contact with the outer peripheral face and the endocyclic inner peripheral surface of sun roller, the support, it is using the central axis rotatory as the center by the shell supporting, and the support is with the supporting of planet roller for rotating, and torque restraining device, its transmission is no longer than the torque of upper limit value. Torque transmission between torque restraining device restriction inner ring and shell.
Description
Technical field
This utility model relates to the power transmission of a kind of planetary roller.
Background technology
The power transmission of planetary roller is by planetary rollers presses on sun roller when there is lubricating oil
Transmit the friction drive device of power.Compared with the power transmission of planetary gear type, at the power of planetary roller
In transfer device, the vibration and the noise that cause because of back clearance are little.Such as, the power transmission of planetary roller is by the sun
Roller, internal ring, planetary rollers and be configured to.The power transmission of planetary roller is such as the rotation to electro-motor
Transfer out the reductor carrying out slowing down to use.Sun roller configures coaxially with support.Planetary rollers is and the periphery of sun roller
The rotor that face contacts with the inner peripheral surface of internal ring.Input and exported by support from electro-motor to sun roller at revolving force
In the case of, by planetary rollers rotation while revolving round the sun around sun roller, export revolving force.
It addition, disclose a kind of torque slip having and absorbing over loading in Japanese Patent Publication 1-169641 publication
The deceleration device of the planetary gear type of mechanism.In the deceleration device that the document is recorded, if outlet side is applied excessive
Load, then torque transmission is cut off by torque slip mechanism.
In the power transmission of above-mentioned planetary roller, between sun roller and planetary rollers and planetary rollers and internal ring
Between, carry out the torque across oil film respectively and transmit.In the power transmission of conventional planetary roller, if to defeated
Go out side and apply excessive load, then the torque load of input side also becomes excessive.As a result of which it is, exist electro-motor or
Friction means within person's reductor sticks together and fault or the misgivings of damage because burning.
Further, reductor is assembled into the articular portion of robot arm.If robot arm collides with people or thing,
Then the power shaft of reductor and the rotation of output shaft stop.For robot arm, in this case, need have as
Lower function: by making the output shaft counter-rotating of reductor, carrys out making space between robot arm and people or thing
Function.But, in the reductor of conventional planetary roller, if rotate stopping because of over loading, then output shaft in
It is difficult to the state (so-called lock-out state) reversed.Therefore, if forcing to make output shaft reverse, then exist in reductor
The risk that the friction means in portion damages.
Utility model content
In view of described situation, the purpose of this utility model is that providing a kind of makes durability improve under excessive load
The power transmission of planetary roller.Particularly, even if this utility model provides one also to be able in the locked state not
The power transmission of the planetary roller making output shaft invert with making friction means generation unfavorable condition.
The power transmission of the planetary roller in exemplary embodiment of the present utility model has: sun roller；In
Ring；Plural planetary rollers；Support；And torque restricting means.Sun roller is can be with main shaft by outer casing supporting
Rotate centered by line.Internal ring is tubular, and is received in the enclosure.Plural planetary rollers and the periphery of sun roller
Face contacts with the inner peripheral surface of internal ring.Support is can to rotate centered by main shaft by outer casing supporting, and planetary rollers is propped up
Hold as rotating.Torque restricting means transmission is less than the torque of higher limit.Torque restricting means limits internal ring with outer
Torque transmission between shell.
The power transmission of the planetary roller in exemplary embodiment of the present utility model also has circular
Ring bearing parts.Ring bearing parts are directly or indirectly connected to shell, and configure coaxially with support.Internal ring
Inner peripheral surface in axial end has the recess in opposite directions of the outer peripheral face with ring bearing parts.Torque restricting means has
Have: movable member；And force application part.Movable member by ring bearing parts carry, and be configured to relative to
Ring bearing parts move diametrically.A part for movable member is accommodated in the recess of internal ring.Force application part supports
Movable member, and movable member is exerted a force to radial outside.Recess is to supply the hole shape of movable member embedding or along axle
To the groove shape extended.
The power transmission of the planetary roller in exemplary embodiment of the present utility model also has circular
Ring bearing parts.Ring bearing parts are directly or indirectly connected to shell, and configure coaxially with support.Ring props up
Bearing portion part has the inner peripheral surface of axial end with internal ring recess in opposite directions at outer peripheral face.
Torque restricting means has: movable member；And force application part.Movable member is by interior ring bearing, and is configured
For moving diametrically relative to internal ring.A part for movable member is accommodated in the recess of ring bearing parts.
Force application part supporting movable member, and movable member is exerted a force to radially inner side.Recess is the hole embedded for movable member
Shape or the groove shape axially extended.
Internal ring or ring bearing parts have the plural recess that circumferential position is different.Torque restricting means has
Have: plural movable member；And plural force application part.Plural movable member is held respectively
It is contained in recess.Movable member is exerted a force by plural force application part respectively.
Internal ring has the circular bottom configured coaxially with support.Shell has bottom with internal ring at inner peripheral surface
Outer peripheral face recess in opposite directions.Torque restricting means has: movable member；And force application part.Movable member is by internal ring
Supporting, and be configured to move diametrically relative to internal ring.A part for movable member is accommodated in shell
In recess.Force application part supporting movable member, and movable member is exerted a force to radial outside.Recess is for movable member
The hole shape embedded or the groove shape axially extended.
Force application part is helical spring.
Movable member is spherical ball.
Movable member is the bar-shaped pin radially extended.
The power transmission of the planetary roller involved by this utility model also has idle running detection sensor, and this idle running is examined
The movable member surveyed in sensor detection torque restricting means comes off with engaging of recess, and generates stopping signal.
Compared with sun roller, support rotates with relative low speeds relative to shell.This support is being supported as rotating
Shell and internal ring between transmission torque be limited in below higher limit by torque restricting means.Therefore, transmit at power
In device, in the case of to being applied with excessive load between shell and support, it is possible to make to produce between shell and internal ring
The slip of circumference.
Such as, in power transmission, in the case of support or shell are inputted revolving force, even if at support
It is difficult under the state (so-called lock-out state) rotated relative to shell, if input exceedes the upper limit of torque restricting means
The revolving force of value, then also be able to make support dally relative to shell.
In the power transmission of the planetary roller involved by this utility model, by limiting between shell and internal ring
Torque is transmitted, it is possible to make durability improve under excessive load.Particularly, even if in the locked state, it is also possible to
Output shaft will be made to invert with producing unfavorable condition at friction means.
Referring to the drawings and by the following detailed description to preferred implementation of the present utility model, of the present utility model on
State and other features, key element, step, feature and advantage can become more fully apparent.
Accompanying drawing explanation
Fig. 1 is the sectional view of the power transmission 1 of the planetary roller involved by the first embodiment.
Fig. 2 is the sectional view of the cutting plane of the situation being shown through A-A cutting line cutting power transmission 1.
Fig. 3 is the explanatory diagram of the part schematically showing power transmission 1.
Fig. 4 is the sectional view of the power transmission 1B of the planetary roller in the second embodiment.
Fig. 5 is the sectional view of the power transmission 1C of the planetary roller in the 3rd embodiment.
Fig. 6 is the sectional view of the power transmission 1D of the planetary roller in the 4th embodiment.
Detailed description of the invention
Hereinafter, referring to the drawings embodiment of the present utility model is illustrated.In this manual, rise for convenience
See, the direction of main shaft is illustrated as horizontal direction, but do not limit the power involved by this utility model and pass
Delivery device posture in use.In this manual, by the direction of main shaft referred to as " axially ", will be with main shaft
" radially " and " circumferential " radially and circumferentially it is referred to as centered by line.
<the first embodiment>
<power transmission 1>
Fig. 1 shows a structure of the power transmission 1 of the planetary roller in the first embodiment of the present utility model
Become the sectional view of example.Fig. 1 has illustrated by the vertical guide cutting including main shaft J1 the situation of power transmission 1
Cutting plane.In FIG, using the right side of paper as input side, left side as outlet side, draw power transmission
Device 1.Fig. 2 is the cutting plane of the situation of the A-A cutting line cutting power transmission 1 being shown through Fig. 1
Sectional view.Fig. 3 is the explanatory diagram of a part for the power transmission 1 schematically showing Fig. 1.At Fig. 3
In, show enlargedly than main shaft J1 by upper portion.
Main shaft J1 is to illustrate in the rotation that sun roller 101, support 141 and input side supporting parts 142 are common
The straight line of the heart.Power transmission 1 is reductor, will slow down from the rotary motion that electro-motor (not shown) inputs
Output.Power transmission 1 has input rotary body 10, internal ring 11, planetary rollers 12, shell 13, output rotation
Body 14, ring bearing parts 15, torque restricting means 16 and bearing 2～5.Bearing 2～5 e.g. two or more
The ball bearing that is configured between outer ring and inner ring of spherical rotor.
<shell 13>
Shell 13 is the housing accommodating rotatable parts described later.Shell 13 is fixed on the casing etc. of electro-motor.Shell
13 have: have the main part 131 of opening at input side；And the cap 132 of the opening configuration at main part 131.
Main part 131 has cylindrical portion 1311 and bottom 1312.Cylindrical portion 1311 has the cylinder axially extended
The inner peripheral surface of shape.Bottom 1312 has the through hole of configuration output rotary body 14.Cap 132 has boss portion
1321 and through hole 1322.Boss portion 1321 is prominent to axial input side.Through hole 1322 configuration input rotates
Body 10.Cap 132 is installed in cylindrical portion 1311.
<input rotary body 10>
Input rotary body 10 is supported the parts into rotating centered by main shaft J1 by shell 13.From electronic
Motor is to the revolving force of input rotary body 10 input regulation.Input rotary body 10 has: be connected to the axle of electro-motor
Power shaft 100；And the sun roller 101 that outside contacts with planetary rollers 12.Power shaft 100 and sun roller 101
Form.
<power shaft 100>
Power shaft 100 is supported as rotating by the cap 132 of shell 13 by bearing 2.Power shaft 100 passes through
Bearing 4, input side supporting parts 142 and bearing 3 are supported to rotate.Bearing 2 is arranged in boss portion 1321
Radially inner side.Bearing 4 is arranged in the radially inner side of the outlet side end of cap 132.Bearing 3 is arranged in power shaft
On the outer peripheral face of the outlet side end of 100.
<sun roller 101>
Sun roller 101 is columned rotatable parts, and has the outer peripheral face axially extended.Outside sun roller 101
Footpath is thicker than the external diameter of power shaft 100, and is connected to power shaft 100 in the end of the input side of sun roller 101.
<internal ring 11>
Internal ring 11 is the rotatable parts of the tubular of interior side contacts planetary rollers 12.Internal ring 11 is accommodated in the cylinder of shell 13
In shape portion 1311.Internal ring 11 is made up of elastomeric element.Internal ring 11 is come planetary rollers by elastic deformation diametrically
12 exert a force to radially inner side.In this embodiment, internal ring 11 is formed by the metallic elastic body with flexibility.Internal ring
The end of the outlet side of 11 is drum.The inner peripheral surface of the end of the outlet side of internal ring 11 and ring bearing parts 15
Outer peripheral face in opposite directions.The end of the outlet side of internal ring 11 configures coaxially with main shaft J1.
In power transmission 1, come planetary rollers 12 to radially inner side by internal ring 11 elastic deformation diametrically
Force.Therefore, even if arranging the parts to planetary rollers 12 force the most separately, it is also possible to make transmission torque increase.
<planetary rollers 12>
Planetary rollers 12 is the rotatable parts that the inner peripheral surface of the outer peripheral face with sun roller 101 and internal ring 11 contacts.Planetary rollers
12 are supported as rotating centered by planetary rotation axis J2 by support 141.Planetary rotation axis J2 is to illustrate row
The straight line of the center of rotation relative to support 141 of star roller 12.Planetary rollers 12 is passed through needle bearing by bracket pins 122
121 supportings are for rotating.
Bracket pins 122 is the spindle unit of planetary rollers, and is kept by support 141.The end of the outlet side of bracket pins 122
Portion is accommodated in support 141.The end of the input side of bracket pins 122 highlights from the input side end face of planetary rollers 12,
And be accommodated in input side supporting parts 142.
Needle bearing 121 is roller bearing, and the plural circle extended by the direction along planetary rotation axis J2
Column rotor is constituted.Needle bearing 121 be arranged in the outer peripheral face of bracket pins 122 and planetary rollers 12 inner peripheral surface it
Between.
<output rotary body 14>
Output rotary body 14 is supported the parts into rotating centered by main shaft J1 by shell 13.Output rotation
Turn 14 to the load output revolving forces specified.Output rotary body 14 is by output shaft 140, support 141 and input
Side bearing parts 142 are constituted.Output shaft 140 is connected to load.Support 141 is by plural planetary rollers 12
Hold as rotating.Input side supporting parts 142 are fixed by the plural connection member 143 axially extended
In support 141.
Output shaft 140 is connected to the spindle unit of support 141.Output shaft 140 configures coaxially with sun roller 101.
Output shaft 140 is supported as rotating by bearing 5 by the bottom 1312 of shell 13.The external diameter ratio of output shaft 140
The external diameter of power shaft 100 is thick.In the case of output shaft 140 rotates because of the revolving force of electro-motor, with power shaft
100 compare, and output shaft 140 rotates with relative low speeds relative to shell 13.Such as, bearing 5 is being configured at the end
After in the through hole in portion 1312, it is arranged on the outer peripheral face of output shaft 140 by inserting output shaft 140 at inner ring.
<support 141>
Support 141 is the supporting parts by bracket pins 122 supporting planetary roller 12.Support 141 and sun roller 101
Configure coaxially.Support 141 is toroidal, and is arranged on the outer peripheral face of input side end of output shaft 140.
Input side supporting parts 142 are the ring-type parts of supporting bracket pins 122.Input side supporting parts 142 with too
Sun roller 101 configures coaxially.Input side supporting parts 142 are supported by bearing 4 by the cap 132 of shell 13
Can rotate.Power shaft 100 is supported as rotating by input side supporting parts 142 by bearing 3.
Bearing 4 be arranged in the inner peripheral surface of the outlet side end of cap 132 and input side supporting parts 142 outer peripheral face it
Between.Bearing 3 is arranged between inner peripheral surface 1421 and the outer peripheral face of power shaft 100 of input side supporting parts 142.
In the axial direction, the position of bearing 3 is identical with the position of bearing 4.In other words, bearing 3 weighs diametrically with bearing 4
Folded.
In power transmission 1, three planetary rollers 12 the most equally spaced configure.Each planetary rollers 12 with
The state of sun roller 101 contact outside is accommodated in internal ring 11.The circumscribed circle being connected with outside three planetary rollers 12
Comparing, internal ring 11 is made up of the parts that the diameter of inner peripheral surface is little.Three planetary rollers are configured in such internal ring 11
In the case of 12, internal ring 11 elastic deformation diametrically, by being executed to radially inner side planetary rollers 12 by pressure F
Power.Further, the higher limit of the torque that internal ring 11 can transmit and being in proportion by pressure F.
Torque restricting means 16 is torque limiter or the clutch that transmission is less than the torque of higher limit.Torque limits
Device 16 processed limits the torque transmission between internal ring 11 and shell 13.In this embodiment, torque restricting means
16 are made up of engaged clutch.In this composition, it is connected to the movable member of shell 13 and is arranged at internal ring 11
Recess engagement.By torque restricting means 16 by the torque limit of transmission between shell 13 and internal ring 11 upper
Below limit value, and cut off the torque exceeding higher limit.
Ring bearing parts 15 are circular parts, and the axial end of supporting internal ring 11.Ring bearing parts 15
It is connected to shell 13, and configures coaxially with support 141.Ring bearing parts 15 have to axial outlet side prominent
Boss portion 151.Embedded the bottom 1312 of shell 13 by boss portion 151, ring bearing parts 15 are fixed on
Shell 13.Ring bearing parts 15 are arranged on the outer peripheral face of bearing 5.
The internal ring 11 inner peripheral surface in axial outlet side end has recess 111.Recess 111 and ring bearing parts
The outer peripheral face of 15 is in opposite directions.Torque restricting means 16 has movable member 161 and force application part 162.Movable member 161
It is configured to move diametrically relative to ring bearing parts 15.Force application part 162 to movable member 161 to
Radial outside exerts a force.Ring bearing parts 15 are provided with receiving hole 152.Receiving hole 152 is having of radially extending
The hole at the end.Movable member 161 and force application part 162 are configured in receiving hole 152.
Movable member 161 is supported by ring bearing parts 15.A part for movable member 161 is accommodated in internal ring 11
In recess 111.In this embodiment, movable member 161 is spherical ball.Force application part 162 is movable by supporting
The elastomer of parts 161 is constituted.In this embodiment, force application part 162 is helical spring.Force application part 162
One end of spiral helicine wire rod be connected to movable member 161.The other end of the spiral helicine wire rod of force application part 162
It is connected to ring bearing parts 15.Recess 111 is the hole shape embedded for movable member 161.Recess 111 has and can
The region that dynamic component 161 in opposite directions and caves in radial outside.
The movable member 161 of torque restricting means 16 engages with the recess 111 of internal ring 11.Thereby, it is possible in limiting
Ring 11 moves in the circumferential relative to the ring bearing parts 15 being connected with shell 13.
At power transmission 1, plural recess 111, movable member 161 and force application part 162 are set.
That is, internal ring 11 has the plural recess 111 that circumferential position is different.In this embodiment, such as four
Individual recess 111 the most equally spaced configures.
Torque restricting means 16 has multiple movable member 161 and multiple force application part 162.Movable member 161 quilt
It is respectively accommodated in the recess 111 of internal ring 11.Movable member 161 is exerted a force by force application part 162 respectively.In this enforcement
In mode, the quantity of movable member 161 is four, and the quantity of force application part 162 is four.Ring bearing parts 15
Receiving hole 152 the most equally spaced configures.
Identical with the quantity of planetary rollers 12 in the quantity of recess 111, movable member 161 and force application part 162
In the case of, because of the vibration of the radial direction of the internal ring 11 when planetary rollers 12 rotates, thus when planetary rollers 12 is passed through, with
Its linkedly recess 111 become easily to come off with engaging of movable member 161.It is therefore preferable that it is recess 111, movable
The quantity of parts 161 and force application part 162 is different from the quantity of planetary rollers 12.
The internal diameter of the outlet side end of internal ring 11 is bigger than the external diameter of ring bearing parts 15.That is, in the output of internal ring 11
Space is produced between inner peripheral surface and the outer peripheral face of ring bearing parts 15 of side end.Therefore, at power transmission 1
In, it is possible to do not consider the frictional force between internal ring 11 and ring bearing parts 15, and easily set the higher limit of torque.
Each part of composition power transmission 1 involved by present embodiment is described above.Hereinafter, to these parts
Mutual relation and the action effect of generation thereof are described in detail.
(1) raising of durability
In power transmission 1, between shell 13 and internal ring 11, the torque of transmission is limited in below higher limit.
Therefore, in the case of output shaft 140 is applied with excessive load, it is possible to make to produce between shell 13 and internal ring 11
The slip of raw circumference.
Such as, in the case of support 141 being inputted revolving force by output shaft 140, even support 141 is difficult to
Relative under the state (so-called lock-out state) that shell 13 rotates, if input exceedes the upper of torque restricting means 16
The revolving force of limit value, it is also possible to make support 141 dally relative to shell 13.Therefore, in power transmission 1,
Can suppress because excessive load causes friction means to damage.
(2) miniaturization of power transmission 1
In power transmission 1, torque restricting means 16 is arranged at ring bearing parts 15.Therefore, it is possible to suppression
Power transmission 1 maximizes diametrically.Further, in power transmission 1, it is possible to outside being easily set at
The higher limit of the torque can transmitted between shell 13 and internal ring 11.For instance, it is possible to by force application part 162 is changed
The parts different for coefficient of elasticity or change the movable member 161 or shape of recess 111, carry out motivation of adjustment transmission
The higher limit of the torque that can transmit in device 1.
(3) make torque adjust and become easy
In power transmission 1, torque dispersion is transmitted to the mate of multiple movable member 161 and recess 111.
Therefore, it is possible to the higher limit of the torque easily set in power transmission 1.
(4) reduction of manufacturing cost
In power transmission 1, movable member 161 is spherical ball, and force application part 162 is helical spring.Cause
This, it is possible to is to be realized with a low cost torque restricting means 16.
<the second embodiment>
In the first embodiment, the movable member 161 supported by ring bearing parts 15 be arranged at the recessed of internal ring 11
Portion 111 engages.On the other hand, in this second embodiment, the movable member 161B supported by internal ring 11B with set
It is placed in the recess 153B engagement of ring bearing parts 15B.
Fig. 4 shows the power transmission 1B of the planetary roller involved by the second embodiment of the present utility model
The sectional view of a configuration example.In fig. 4 it is shown that by the vertical guide cutting power biography including main shaft J1
The cutting plane of the situation of delivery device 1B.In the diagram, the ratio main shaft of power transmission 1B is schematically depicted
Line J1 leans on upper portion.
Different from the power transmission 1 of Fig. 3, in power transmission 1B, arrange at ring bearing parts 15B
There is recess 153B, configure by torque restricting means 16B at internal ring 11B.The outer peripheral face of ring bearing parts 15B has
With the inner peripheral surface of the axial outlet side end of internal ring 11B recess 153B in opposite directions.
Torque restricting means 16B is made up of movable member 161B and force application part 162B.Movable member 161B joins
It is set to move diametrically relative to internal ring 11B.Force application part 162B is inside to footpath to movable member 161B
Side exerts a force.Internal ring 11B is provided with receiving hole 112B.Receiving hole 112B is the hole with the end radially extended.
Movable member 161B and force application part 162B is arranged in receiving hole 112B.
Movable member 161B is supported by internal ring 11B.A part of movable member 161B is accommodated in ring bearing parts
In the recess 153B of 15B.Force application part 162B is made up of the elastomer supporting movable member 161B.In this enforcement
In mode, force application part 162B is helical spring.One end of the spiral helicine wire rod of force application part 162B is connected to
The other end of the spiral helicine wire rod of movable member 161B, force application part 162B is connected to internal ring 11B.Recess 153B
It it is the hole shape embedded for movable member 161B.Recess 153B has with movable member 161B in opposite directions and inside to footpath
The region of side depression.
The movable member 161B of torque restricting means 16B engages with the recess 153B of ring bearing parts 15B.Thus,
Internal ring 11B can be limited and move in the circumferential relative to the ring bearing parts 15B being connected with shell 13.
Plural recess 153B, movable member 161B and force section it is provided with in power transmission 1B
Part 162B.That is, ring bearing parts 15B has the plural recess 153B that circumferential position is different.Torque limits
Device 16B processed has plural movable member 161B and plural force application part 162B.Two or more
Movable member 161B be respectively accommodated in the recess 153B of ring bearing parts 15B.Plural force application part
Movable member 161B is exerted a force by 162B respectively.
In power transmission 1B, between shell 13 and internal ring 11B, the torque of transmission is limited in higher limit
Below.Therefore, in the case of output shaft 140 is applied with excessive load, it is possible to make shell 13 and internal ring 11B
Between produce circumference slip.Further, in power transmission 1B, pass between shell 13 and internal ring 11B
The torque dispersion passed is transmitted to the mate of multiple movable member 161B and recess 153B.Therefore, pass at power
In delivery device 1B, it is possible to easily set the higher limit of the torque that can transmit.
<the 3rd embodiment>
In the first embodiment and the second embodiment, torque restricting means 16,16B be arranged in internal ring 11,
Between end and ring bearing parts 15, the 15B of 11B.On the other hand, in the third embodiment, to torque limit
The situation that device 16C is configured between the end of internal ring 11C and cylindrical portion 1311C of shell 13C illustrates.
Fig. 5 shows the power transmission 1C of the planetary roller involved by the 3rd embodiment of the present utility model
The sectional view of a configuration example, and shown by the vertical guide cutting including main shaft J1 power transmission 1C
The cutting plane of situation.In Figure 5, the more top side than main shaft J1 of power transmission 1C is schematically depicted
Part.
Different from the power transmission 1 of Fig. 3, power transmission 1C sets in cylindrical portion 1311C of shell 13C
It is equipped with recess 1313C, configures torque restricting means 16C at internal ring 11C.The power transmission 1 and Fig. 5 of Fig. 3
The shell 13 of power transmission 1C, the bottom 1312 of 13C, the shape of 1312C and internal ring 11,11C
The shape of outlet side end different.
The bottom 1312C of shell 13C has boss portion 1314C prominent to input side.Bearing 5 is arranged in boss
The radially inner side of portion 1314C.Internal ring 11C has the circular bottom 113C configured coaxially with support 141C.
The inner peripheral surface of bottom 113C is with the outer peripheral face of boss portion 1314C in opposite directions.
The inner peripheral surface of cylindrical portion 1311C of shell 13C has recess 1313C.Recess 1313C and internal ring 11C's
The outer peripheral face of bottom 113C is in opposite directions.Torque restricting means 16C has movable member 161C and force application part 162C.
Movable member 161C is configured to move diametrically relative to internal ring 11C.Force application part 162C is to movable part
Part 161C exerts a force to radial outside.The bottom 113C of internal ring 11C is provided with receiving hole 114C.Receiving hole 114C
It it is the hole with the end extended diametrically.Movable member 161C and force application part 162C is arranged in receiving hole 114C
In.
Movable member 161C is supported by the bottom 113C of internal ring 11C.A part of movable member 161C is accommodated in
In the recess 1313C of shell 13C.Force application part 162C is made up of the elastomer supporting movable member 161C.?
In this embodiment, force application part 162C is helical spring.One end of the spiral helicine wire rod of force application part 162C
It is connected to movable member 161C.The other end of the spiral helicine wire rod of force application part 162C is connected to bottom 113C.
Recess 1313C is the hole shape embedded for movable member 161C.Recess 1313C has and movable member 161C phase
To and to radial outside depression region.
The recess 1313C of the movable member 161C and shell 13C of torque restricting means 16C engages.Thus, energy
Enough limit internal ring 11C to move in the circumferential relative to shell 13C.
Plural recess 1313C, movable member 161C and force it is provided with in power transmission 1C
Parts 162C.That is, cylindrical portion 1311C of shell 13C has the plural recess that circumferential position is different
1313C.Torque restricting means 16C has plural movable member 161C and plural force application part
162C.Movable member 161C is respectively accommodated in the recess 1313C of cylindrical portion 1311C.Force application part 162C divides
Other to movable member 161C force.
In power transmission 1C, between shell 13C and internal ring 11C, the torque of transmission is limited in higher limit
Below.Therefore, in the case of output shaft 140 is applied with excessive load, it is possible to make shell 13C and internal ring
The slip of circumference is produced between 11C.Further, in power transmission 1C, torque dispersion be transmitted to multiple movably
The mate of parts 161C and recess 1313C.Therefore, in power transmission 1C, it is possible to easily set
Determine the higher limit of torque.
<the 4th embodiment>
In the first embodiment, exerted a force to radial outside by the movable member 161 supported by ring bearing parts 15,
Movable member 161 is pressed on the recess 111 of internal ring 11.On the other hand, in the 4th embodiment, clip
Internal ring 11D ground is at outside radially and these both sides, inner side configuration torque restricting means 16D.
Fig. 6 shows the one of the power transmission 1D of the planetary roller in the 4th embodiment of the present utility model
The sectional view of configuration example.In fig. 6 it is shown that by the vertical guide cutting power transmission dress including main shaft J1
Put the cutting plane of the situation of 1D.In figure 6, the ratio main shaft J1 of power transmission 1D is schematically depicted
By upper portion.
Different from the power transmission 1 of Fig. 3, in power transmission 1D, the inner peripheral surface of internal ring 11D is with outer
Side face is respectively arranged with recess 111D and 115D, in ring bearing parts 15D and cylindrical portion 1311D of shell 13D
Configuration torque restricting means 16D.
Internal ring 11D has recess 111D.The internal ring 11D outer peripheral face in axial outlet side end has recess
115D.The inner peripheral surface of cylindrical portion 1311D of recess 115D and shell 13D is in opposite directions.In this embodiment, exist
In circumference, the position of recess 111D and the position consistency of recess 115D.
Torque restricting means 16D is configured at cylindrical portion 1311D of shell 13D.Torque restricting means 16D has can
Dynamic component 161D and force application part 162D.Movable member 161D is configured to relative to cylindrical portion 1311D in footpath
Move up.Movable member 161D is exerted a force by force application part 162D to radially inner side.Arrange in cylindrical portion 1311D
There is receiving hole 1315D.Receiving hole 1315D is the hole with the end extended diametrically.Movable member 161D and executing
Power parts 162D is arranged in receiving hole 1315D.
Movable member 161D is supported by cylindrical portion 1311D.A part of movable member 161D is accommodated in internal ring 11D
Recess 115D in.Force application part 162D is made up of the elastomer supporting such movable member 161D.At this
In embodiment, force application part 162D is helical spring.One end of the spiral helicine wire rod of force application part 162D is even
It is connected to movable member 161D.The other end of the spiral helicine wire rod of force application part 162D is connected to cylindrical portion 1311D.
Recess 115D is the hole embedded for movable member 161D.Movable member 161D has with movable member 161D in opposite directions
And to the region of radially inner side depression.
Engaged with recess 111D by the movable member 161D of ring bearing parts 15D supporting.Further, by cylindrical portion
The movable member 161D of 1311D supporting engages with recess 115D.Thereby, it is possible to limit internal ring 11D relative to outward
Shell 13D moves in the circumferential.In other words, with clipping internal ring 11D at outside radially and inner side configuration torque limit
Device 16D.Therefore, it is possible to the higher limit of suppression transmission torque changes because internal ring 11D vibrates diametrically.Its
Result is, in power transmission 1D, it is possible to easily set the higher limit of torque.
It addition, in first to fourth embodiment, recess 111,153B, 1313C, 111D and 115D divide
It is not hole shape.But, receiving movable member 161 of the present utility model, the recess of a part of 161B～161D
Shape be not limited to this.Such as, recess 111,153B, 1313C, 111D or 115D can also be along axle
To the groove shape extended.That is, as long as recess 111, the following shape of 153B, 1313C, 111D or 115D are i.e.
Can: when making internal ring 11,11B～11D move in the circumferential relative to shell 13,13C, 13D, it is possible to make to turn
Square restriction device 16, the movable member 161 of 16B～16D, 161B～161D embed and limit the relative of internal ring 11
Shape in shell 13,13C, 13D movement in the circumferential.
In first to fourth embodiment, movable member 161,161B～161D are spherical balls.But, this
The movable member 161 of utility model, the shape of 161B～161D are not limited to this.Such as, movable member 161,
161B～161D can also be the bar-shaped pin radially extended.In this case, the state engaged with recess is sold
Correspondingly change with the end shape of this pin.Therefore, it is possible to the upper limit of the torque being easily adjusted in power transmission
Value.
First, second and the 4th in embodiment, outside ring bearing parts 15,15B, 15D are attached directly to
Shell 13,13D.But, outside ring bearing parts 15 of the present utility model, 15B, 15D can also be indirectly attached to
Shell 13,13D.Such as, ring bearing parts 15,15B, 15D are fixed on the bearing of shell 13,13D across outer ring
It is connected to the bottom 1312 of shell 13,13D.
In first to fourth embodiment, torque restricting means 16,16B～16D limit internal ring 11,11B～11D
And shell 13, between 13C, 13D torque transmission.Power transmission of the present utility model can also have idle running inspection
Survey sensor.Idle running detection sensor detection torque restricting means 16,16B～16D in movable member 161,
161B～161D comes off with recess 111, engaging of 153B, 1313C, 111D or 115D, and generates stopping
Signal.In the power transmission with such idle running detection sensor, it is possible to utilize idle running detection sensor
Stop signal, make the rotation output of electro-motor automatically stop.Therefore, the outlet side of power transmission is being executed
When having added excessive load, it is possible to prevent from producing the bad feelings such as burning sticks together at power transmission or electro-motor
Condition.
In first to fourth embodiment, torque restricting means 16,16B～16D be arranged in internal ring 11,11B～
The end of the axial outlet side in 11D.But, torque restricting means 16 of the present utility model, 16B～16D
Configuration is not limited to this.Such as, power transmission 1,1B～1D can also be torque restricting means 16,
Structure as the end of the axial input side that 16B～16D is arranged in internal ring 11,11B～11D.
In first to fourth embodiment, shell 13,13C, 13D are fixed on the casing etc. of electro-motor, electronic
The revolving force of motor is transmitted to sun roller 101 by power shaft 100, by support 141 from output shaft 140 output rotation
Turn power.But, the power transmission 1 in this utility model, the use form of 1B～1D are not limited to this.
For example, it is also possible to be at shell 13,13C, 13D；In sun roller 101 and support 141 these three parts,
Any one parts is fixed on the casing etc. of electro-motor, using in other parts as input, by other
Another in parts is as output.I.e., it is also possible to across torque restricting means 16 be connected to shell 13,13C,
The internal ring 11 of 13D, 11B～11D relatively rotate with the casing etc. of electro-motor.
Power transmission 1, the shell 13 of 1B～1D, 13C, 13D can also with the casing of electro-motor or
Other the shell of power transmission such as variator, speed increaser forms.Or, power transmission 1,
1B～1D can also be using the housing common with electro-motor or other power transmissions as shell 13,13C,
The structure that 13D uses.
It addition, said structure can combine in the most conflicting scope rightly.
Claims (9)
1. a power transmission for planetary roller, has:
Sun roller, it is can to rotate centered by main shaft by outer casing supporting；
The internal ring of tubular, it is accommodated in described shell；
Plural planetary rollers, they contact with the outer peripheral face of described sun roller and the inner peripheral surface of described internal ring；
Support, it is can to rotate centered by described main shaft by described outer casing supporting, and described support is by described
Planetary rollers supports as rotating；And
Torque restricting means, its transmission is less than the torque of higher limit,
The power transmission of described planetary roller is characterised by,
Described torque restricting means limits the torque transmission between described internal ring and described shell.
The power transmission of planetary roller the most according to claim 1, it is characterised in that
The power transmission of described planetary roller also has circular ring bearing parts, and described ring bearing parts are straight
Ground connection or be indirectly attached to described shell, and described ring bearing parts configure coaxially with described support,
The described internal ring inner peripheral surface in axial end has and the outer peripheral face of described ring bearing parts in opposite directions recessed
Portion,
Described torque restricting means has:
Movable member, it is configured to relative to described by described ring bearing parts carry, described movable member
Ring bearing parts move diametrically, and a part for described movable member is accommodated in the described recess of described internal ring
In；And
Force application part, it supports described movable member, and described force application part to described movable member to radial outside
Force,
Described recess is the hole shape embedded for described movable member or the groove shape axially extended.
The power transmission of planetary roller the most according to claim 1, it is characterised in that
The power transmission of described planetary roller also has circular ring bearing parts, and described ring bearing parts are straight
Ground connection or be indirectly attached to described shell, and described ring bearing parts configure coaxially with described support,
Described ring bearing parts have the inner peripheral surface of axial end with described internal ring in opposite directions recessed at outer peripheral face
Portion,
Described torque restricting means has:
Movable member, it is by described interior ring bearing, and described movable member is configured to exist relative to described internal ring
Radially move, and a part for described movable member is accommodated in the described recess of described ring bearing parts；And
Force application part, it supports described movable member, and described force application part to described movable member to radially inner side
Force,
Described recess is the hole shape embedded for described movable member or the groove shape axially extended.
4. according to the power transmission of the planetary roller described in Claims 2 or 3, it is characterised in that
Described internal ring or described ring bearing parts have the plural described recess that circumferential position is different,
Described torque restricting means has:
Plural described movable member, they are respectively accommodated in described recess,
Plural described force application part, described movable member is exerted a force by respectively.
The power transmission of planetary roller the most according to claim 1, it is characterised in that
Described internal ring has the circular bottom configured coaxially with described support,
Described shell has the outer peripheral face of described bottom with described internal ring recess in opposite directions at inner peripheral surface,
Described torque restricting means has:
Movable member, it is by described interior ring bearing, and described movable member is configured to exist relative to described internal ring
Radially move, and a part for described movable member is accommodated in the described recess of described shell；And
Force application part, it supports described movable member, and described force application part to described movable member to radial outside
Force,
Described recess is the hole shape embedded for described movable member or the groove shape axially extended.
6. according to the power transmission of the planetary roller described in Claims 2 or 3, it is characterised in that
Described force application part is helical spring.
7. according to the power transmission of the planetary roller described in Claims 2 or 3, it is characterised in that
Described movable member is spherical ball.
8. according to the power transmission of the planetary roller described in Claims 2 or 3, it is characterised in that
Described movable member is the bar-shaped pin radially extended.
9. according to the power transmission of the planetary roller described in Claims 2 or 3, it is characterised in that
The power transmission of described planetary roller also has idle running detection sensor, described idle running detection sensor detection
Described movable member in described torque restricting means comes off with engaging of described recess, and generates stopping signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015044598A JP2016164432A (en) | 2015-03-06 | 2015-03-06 | Planetary roller type power transmission device |
| JP2015-044598 | 2015-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205534072U true CN205534072U (en) | 2016-08-31 |
Family
ID=56779428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620156361.XU Expired - Fee Related CN205534072U (en) | 2015-03-06 | 2016-03-01 | Power transfer device of planet roll -type |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2016164432A (en) |
| CN (1) | CN205534072U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018100744A (en) * | 2016-12-21 | 2018-06-28 | Ntn株式会社 | Rotary driving source for electric actuator and electric actuator |
| JP2018143028A (en) * | 2017-02-27 | 2018-09-13 | 日本電産シンポ株式会社 | Dc motor driving apparatus with traction reducing gear |
-
2015
- 2015-03-06 JP JP2015044598A patent/JP2016164432A/en active Pending
-
2016
- 2016-03-01 CN CN201620156361.XU patent/CN205534072U/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| JP2016164432A (en) | 2016-09-08 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20200301 |
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