CN205047764U - Deceleration device - Google Patents
Deceleration device Download PDFInfo
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- CN205047764U CN205047764U CN201520705216.8U CN201520705216U CN205047764U CN 205047764 U CN205047764 U CN 205047764U CN 201520705216 U CN201520705216 U CN 201520705216U CN 205047764 U CN205047764 U CN 205047764U
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Abstract
The utility model provides a deceleration device, it has: use the sun rotor of rotation center axis as the center rotation, through with sun rotor contacts and the rotatory planet rotor more than two of quilt transmission, will planet rotor supporting is planet carrier round pin that can the free rotation, with the rotation center axis is the rotatory wheel part in center, make the planet rotor with the rotation center axis is the rotatory annular rotatable parts in center, the supporting rotatable parts's enclosure component, and will wheel part supporting for can for the rotatory bearing of enclosure component, the wheel part has planet carrier round pin support, connecting portion and drum portion, the axle contracting draw together: the configuration is in enclosure component's inner peripheral surface with output bearing between the planet carrier round pin support, and the configuration is in enclosure component's outer peripheral face with wheel bearing between the inner peripheral surface of drum portion.
Description
Technical field
The utility model relates to a kind of speed reducer, relates to a kind of improvement comprising speed reducer as lower component in more detail: the sun rotor rotated centered by rotating center axis respectively, planetary rotation body and wheel component; And surround the rotatable parts of ring-type of multiple planetary rotation body.
Background technique
In the self-propelled vehicle such as electric wheelchair, AGV (automatic guided vehicle), the rotary motion obtained from electric motor being carried out the speed reducer that slows down for increasing torque makes wheel rotate (such as, Japanese Unexamined Patent Publication 2003-28254 publication) with desired speed.Further, have a kind of by making power transmission mechanism miniaturization, the wheel driver (such as, Japanese Unexamined Patent Publication 2008-17588 publication) of driving mode in the wheel assembling speed reducer, electric motor and electromagnetic brake in wheel.
In speed reducer in the past, put on and keep the load of wheel of tire to directly act on friction means in speed reducer, therefore likely cause the transmission hydraulic performance decline of speed reducer.Such as, in the friction roller type deceleration 6 described in Japanese Unexamined Patent Publication 2003-28254 publication, the load putting on the carrying cylinder portion 4 of wheel 1 directly puts on the outer ring 32 contacted with guide reel 37a, 37b and wedge shape roller 38.Therefore, the axle between outer ring 32, guide reel 37a, 37b, wedge shape roller 38, rotating driveshaft 17 and friction means collide, and therefore transmit hydraulic performance decline, cause the lost of life of these friction means.
Further, in the planetary gear speed reducer 103 described in Japanese Unexamined Patent Publication 2008-17588 publication, the load putting on the first layer parts 41 of wheel 104 directly puts on the secondary annulus 27 engaged with the second planetary pinion 28.Therefore, the engaging piece between secondary annulus 27, second planetary pinion 28 and secondary sun wheel 26 becomes irregular, also becomes the reason of vibration and noise.
Model utility content
The utility model completes in view of the foregoing, its object is to provide a kind of and can alleviate the speed reducer that the load putting on wheel component puts on the situation of friction means.
Have according to speed reducer of the present utility model: sun rotor, described sun rotor rotates centered by rotating center axis; Plural planetary rotation body, described plural planetary rotation body is configured in than the position of described sun rotor by radial outside, and described plural planetary rotation body is passed rotation by contacting with described sun rotor; Planet carrier pin, described planetary rotation body supports as rotating freely by described planet carrier pin; Wheel component, described wheel component is by described plural planetary rotation body supporting for rotating, and described wheel component rotates centered by described rotating center axis; The rotatable parts of ring-type, described rotatable parts surround described plural planetary rotation body, and described rotatable parts, by contacting with described planetary rotation body, make described planetary rotation body rotate centered by described rotating center axis; Case member, described case member surrounds described sun rotor and described planetary rotation body, and described case member supports described rotatable parts; And bearing, described bearing is by described wheel component supporting for can rotate relative to described case member, and described wheel component has: planet carrier pin support, and described planet carrier pin support supports described planet carrier pin; Joint, described joint extends from described planet carrier pin support towards radial outside; And cylindrical part, the outer circumferential face of described cylindrical part from the outer edge of described joint along described case member extends, and described bearing comprises: export bearing, described output bearing is configured between the inner peripheral surface of described case member and described planet carrier pin support; And wheel bearing, described wheel bearing is configured between the outer circumferential face of described case member and the inner peripheral surface of described cylindrical part.
Preferred described sun rotor is sun roller, and described planetary rotation body is the planetary rollers contacted with the outer circumferential face of described sun roller, and described rotatable parts are the inner ring with the inner peripheral surface contacted with the outer circumferential face of described planetary rollers.
The described cylindrical part of preferred described wheel component is the wheel keeping tire.
The contact position that the axial position of preferred described wheel bearing contacts with described sun roller and described planetary rollers overlapping at least partially.
Preferred described output bearing is configured in the position of central position by axial side of the axis of the contact position contacted with described planetary rollers than described sun roller, and described wheel bearing is configured in the position leaning on axial opposite side than the central position of the axis of described contact position.
Preferred described planetary rollers has the different large-diameter portion of diameter and minor diameter part, and described large-diameter portion contacts with the outer circumferential face of described sun roller, and described minor diameter part contacts with the inner peripheral surface of described inner ring.
Preferred described speed reducer comprises the force application part exerted a force vertically relative to described case member to described inner ring, and described inner ring is opposed in the axial direction with the described large-diameter portion of described planetary rollers.
The described joint of preferred described wheel component makes the described planet carrier pin support arranged for each described planetary rotation body be interconnected.
Preferred described speed reducer comprises the encoder of the rotation detecting described wheel component, described wheel component is drum with the end, the bottom of described wheel component is made up of described planet carrier pin support and described joint, described wheel bearing is configured in the opening side of described wheel component, described encoder has: identification elements, described identification elements is fixed on described wheel component, and described identification elements circumferentially configures centered by described rotating center axis; And sensor part, described sensor part is fixed on described case member, and described sensor part, by reading described identification elements, generates the testing signal of the rotating speed representing described wheel component.
The described sensor part of preferred described encoder is configured in the bottom side of described wheel component, and described wheel component has the sensor mounting hole making the described sensor part of described encoder be exposed to the outer edge of described bottom.
The described sensor part of preferred described encoder is configured in the position than described output shaft breasting radial outside.
Wheel component is supported on case member by output bearing and wheel bearing.Especially, the cylindrical part of wheel component extends along the outer circumferential face of case member, and is supported on case member by the wheel bearing be configured between the cylindrical part of wheel component and the outer circumferential face of case member.Further, because the rotatable parts contacted with planetary rotation body are supported by case member, the load therefore putting on wheel component directly can not put on rotatable parts.
Model utility effect
According to speed reducer of the present utility model due to the load putting on the rotatable parts contacted with planetary rotation body can be alleviated, therefore, it is possible to alleviate the situation that the load putting on wheel component puts on the friction means be made up of sun rotor, planetary rotation body and rotatable parts.
By referring to accompanying drawing, following the utility model preferred implementation is described in detail, more clearly can understands above-mentioned and other feature of the present utility model, key element, step, feature and advantage.
Accompanying drawing explanation
Fig. 1 is the sectional view of the speed reducer 10 according to an exemplary mode of execution.
Fig. 2 is the explanatory drawing of the inside observing speed reducer 10 from outlet side.
Fig. 3 is the explanatory drawing of an example of the detailed construction that speed reducer 10 is schematically shown.
Embodiment
Below, with reference to accompanying drawing, an exemplary mode of execution of the present utility model is described.In this manual, for simplicity, with the direction of the rotating center axis of sun rotor for substantially horizontal is described, but do not limit according to speed reducer of the present utility model attitude in use.Further, in this manual, by the direction of the rotating center axis of sun rotor referred to as " axis ", by the radial direction centered by the rotating center axis of sun rotor and circumference referred to as " radial direction " and " circumference ".
Fig. 1 is the sectional view of a configuration example of the wheel driver 1 that the speed reducer 10 comprised according to an exemplary mode of execution of the present utility model is shown, shows section when utilizing the plane comprising rotating center axis J1 to cut off wheel driver 1 a part of.In FIG, the section of speed reducer 10 is depicted.Further, in the paper of Fig. 1, do not cut off the planetary rollers 12 being positioned at the upside of sun roller 11 and describe.Fig. 2 is the explanatory drawing of inside observing speed reducer 10 from outlet side, the part of cutting wheel component 14 and case member 16 and sun roller 11, planetary rollers 12, planet carrier pin 13 and inner ring 15 are shown.
This wheel driver 1 be the rotation of wheel making self-propelled vehicle wheel in the drive unit of driving mode, this wheel driver 1 is made up of speed reducer 10, electric motor 20 and electromagnetic brake 30.Electric motor 20 is the motors utilizing electric power Driving Torque.Speed reducer 10 is the speed reducers slowed down to the rotary motion obtained by electric motor 20.Electromagnetic brake 30 is the braking device utilizing the attraction force of electromagnet to obtain braking force, and the rotary motion of this electromagnetic brake 30 pairs of electric motors 20 is braked.
Speed reducer 10 is configured in the end side of the axle (not shown) of electric motor 20, and electromagnetic brake 30 is configured in another side of described axle.Such as, electric motor 20 is the outer rotor motor of the casing comprising drum.
This speed reducer 10 is the friction type speed reducers utilizing frictional force transmission to rotate, and this speed reducer 10 is made up of wheel cover 4, input shaft bearing 5, sun roller 11, planetary rollers 12, planet carrier pin 13, wheel component 14, inner ring 15, case member 16, output bearing 17, wheel bearing 18, encoder 19 and force application part 153.Below, these each parts are described in detail.
Sun roller 11 is the sun rotors rotated centered by rotating center axis J1.This sun roller 11 is made up of the columned metal parts extended vertically, and forms with the axle of electric motor 20, and with described axle arranged coaxial.The outer circumferential face of sun roller 11 is the rotation surface contacted with planetary rollers 12.Such as, sun roller 11 is formed at the axle of electric motor 20 itself.In addition, speed reducer 10 also can be such structure: form sun roller 11 by the parts of the axle split with electric motor 20, and this sun roller 11 is fixed on this axle.
Sun roller 11 is transfused to bearing 5 and supports as can rotate relative to case member 16.Input shaft bearing 5 is the bearings supported by sun roller 11 as rotating.Such as, input shaft bearing 5 is ball bearings.
Planetary rollers 12 is configured in lean on the position of radial outside than sun roller 11 and be passed the planetary rotation body of rotation by contacting with the outer circumferential face of sun roller 11, this planetary rollers 12 rotation centered by spin axis J2, and revolve round the sun centered by rotating center axis J1.The outer circumferential face of planetary rollers 12 is the rotation surface contacted with sun roller 11 and inner ring 15.This planetary rollers 12 is made up of the different large-diameter portion 121 of diameter and minor diameter part 122.
Large-diameter portion 121 is made up of the discoideus metal parts centered by spin axis J2, and this large-diameter portion 121 contacts with the outer circumferential face of sun roller 11.And that diameter in the axial direction constant barrel surface larger than the diameter of the outer circumferential face of minor diameter part 122 is formed by diameter for the outer circumferential face of large-diameter portion 121.
Minor diameter part 122 is made up of the metal parts of the circular cone shape centered by spin axis J2, and this minor diameter part 122 contacts with the inner peripheral surface of inner ring 15.Minor diameter part 122 clips large-diameter portion 121 in the axial direction and is formed at electric motor 20 side and the side contrary with electric motor 20 respectively.
The minor diameter part 122 of electric motor 20 side and the minor diameter part 122 of the side contrary with electric motor 20 all have the outer circumferential face that diameter diminishes along with leaving large-diameter portion 121 vertically.That is, minor diameter part 122 has the outer circumferential face be made up of the plane of inclination at certain angle of inclination.The angle of inclination of this outer circumferential face is such as 45 °.
Such as, speed reducer 10 has three planetary rollers 12 of the surrounding being configured in sun roller 11.These planetary rollers 12 are in the circumferential across the configuration of roughly fixing interval.Further, each planetary rollers 12 is configured to make its spin axis J2 and rotating center axis J1 towards same direction.
Wheel component 14 three planetary rollers 12 is supported planet carrier component for rotating by planet carrier pin 13, and this wheel component 14 rotates centered by rotating center axis J1.Planet carrier pin 13 is roller axles planetary rollers 12 supported as rotating freely, and planet carrier pin 13 is formed by along the columned metal parts extended in same direction with rotating center axis J1, and is kept by wheel component 14.
The end side of this planet carrier pin 13 is held in wheel component 14, is configured with planetary rollers 12 in another side of this planet carrier pin 13.Such as, planetary rollers 12 by the sliding bearing 123 be contained in pin-and-hole through vertically support by planet carrier pin 13.
This wheel component 14, in drum with the end, is made up of planet carrier pin support 141, joint 142, cylindrical part 143 and ceiling plate portion 144.Planet carrier pin support 141, joint 142 and ceiling plate portion 144 form the bottom 145 of wheel component 14.
Planet carrier pin support 141 supporting planetary frame pin 13.Planet carrier pin support 141 is arranged for each planetary rollers 12.Joint 142 has the shape extended from planet carrier pin support 141 towards radial outside, this joint 142 connected row carrier pin support 141 and cylindrical part 143, and three planet carrier pin supports 141 are interconnected.
Cylindrical part 143 has from the outer edge of joint 142 along the shape that the outer circumferential face of case member 16 extends vertically.This cylindrical part 143 is the wheels keeping tire 2.Ceiling plate portion 144 has the circular plate shape opposed with the end face of sun roller 11, and is configured in than the position of planet carrier pin support 141 by radially inner side.
Inner ring 15 is encirclement three planetary rollers 12 and the rotatable parts of ring-type planetary rollers 12 being rotated centered by rotating center axis J1 by contacting with planetary rollers 12, and this inner ring 15 is supported by case member 16.Inner ring 15 has circular inner peripheral surface, and this inner peripheral surface is contacted with the outer circumferential face of the minor diameter part 122 of planetary rollers 12.
This inner ring 15 is made up of output side ring 151 and input side ring 152, and input side ring 152 and output side ring 151 are configured in electric motor 20 side and the side contrary with electric motor 20 respectively relative to the large-diameter portion 121 of planetary rollers 12.Export side ring 151 and input side ring 152 is all opposed in the axial direction with large-diameter portion 121, the shape exporting side ring 151 and input the section when utilization of side ring 152 comprises the plane cut-out of rotating center axis J1 in the form of a substantially rectangular.
Exporting side ring 151 is the inner ring being configured in the side contrary with electric motor 20, and the side that output side ring 151 is configured to make it circular is opposed with the side of large-diameter portion 121.Input side ring 152 is the inner ring being configured in electric motor 20 side, and the side that input side ring 152 is configured to make it circular is opposed with the side of large-diameter portion 121.
Friction means is formed by sun roller 11, planetary rollers 12 and inner ring 15.Because the diameter of the outer circumferential face of the large-diameter portion 121 of planetary rollers 12 is larger than the diameter of the outer circumferential face of sun roller 11, therefore the rotation of sun roller 11 is slowed down by planetary rollers 12.Further, because the diameter of the inner peripheral surface of inner ring 15 is larger than the diameter of the outer circumferential face of the minor diameter part 122 of planetary rollers 12, therefore the rotation of planetary rollers 12 is slowed down by inner ring 15 further.
Case member 16 surrounds sun roller 11 and planetary rollers 12 and the rotatable parts support unit of supporting inner ring 15, and this case member 16 is fixed on the casing of electric motor 20.This case member 16, in the drum having lid, is made up of ceiling plate portion 161, cylindrical part 162 and bearing accommodating part 163.
Ceiling plate portion 161 is made up of the discoideus cover of the through hole be formed at central part for holding input shaft bearing 5, and this discoideus cover is centered by rotating center axis J1.Ceiling plate portion 161 is installed on the casing of electric motor 20.Cylindrical part 162 has the shape extended vertically from the outer edge of ceiling plate portion 161, and holds inner ring 15.Bearing accommodating part 163 has the shape extended from cylindrical part 162 towards radially inner side in the opening side of case member 16, and holds output bearing 17.
Output bearing 17 and wheel bearing 18 are the bearings supported by wheel component 14 as rotating relative to case member 16.Exporting bearing 17 is the bearings supported the bottom 145 of wheel component 14 as rotating, and this output bearing 17 is configured between the inner peripheral surface of case member 16 and planet carrier pin support 141.This output bearing 17 is such as ball bearing, and is configured between the inner peripheral surface of bearing accommodating part 163 and the outer circumferential face of planet carrier pin support 141.
Wheel bearing 18 is the bearings cylindrical part 143 of wheel component 14 supported as rotating, and this wheel bearing 18 is configured between the outer circumferential face of case member 16 and the inner peripheral surface of cylindrical part 143.This wheel bearing 18 is that the large and resistance to loading ratio of the diameter of diameter specific output bearing 17 exports the large bearing of the resistance to load of bearing 17, and this wheel bearing 18 is configured in the opening side of wheel component 14.Wheel bearing 18 is such as ball bearing.In addition, speed reducer 10 also can be as the structure exporting bearing 17 and wheel bearing 18 by the rolling bearing except ball bearing, such as roller bearing.
Force application part 153 is frictional force in order to adjust between friction means and the pressure-producing part exerted a force vertically relative to case member 16 to inner ring 15.The output side ring 151 of force application part 153 pairs of inner ring 15 or input side ring 152 exert a force to large-diameter portion 121 side of planetary rollers 12.
This force application part 153 adopts elastic material to form, and this force application part 153 is configured at the outer edge of the ceiling plate portion 161 of case member 16 and exerts a force to input side ring 152.Such as, force application part 153 is made up of the helical spring with the central axis extended vertically.Force application part 153 also can be multiple.Plural force application part 153 is have employed in speed reducer 10.
The ceiling plate portion 161 of case member 16 and bearing accommodating part 163 limit inner ring 15 and move vertically.Further, the inclination of the outer circumferential face of minor diameter part 122 plays a role as follows: by exerting a force vertically to the input side ring 152 of inner ring 15, and the power pressing the radial direction of large-diameter portion 121 towards sun roller 11 is increased.Frictional force between friction means is adjusted by the active force controlling force application part 153.
Encoder 19 is the detection devices of the rotation detecting wheel component 14.Such as, encoder 19 is the transmissive optical formula rotating coders of the rotation detecting wheel component 14 to be optically, is made up of sensor part 191 and slit plate 192.
Sensor part 191 is fixed on case member 16, and sensor part 191, by reading slit plate 192, generates the testing signal of the rotating speed representing wheel component 14.This sensor part 191 has projection and accepted light portion 194, and light detects and the light-receiving part generating described testing signal is formed by generating the light-projecting portion that detects light and receiving via the slit 193 of slit plate 192 in projection and accepted light portion 194.Sensor part 191 is installed on the outer edge of the bearing accommodating part 163 of case member 16.That is, sensor part 191 is configured in the side, bottom 145 of wheel component 14, and is configured in the position of specific output bearing 17 by radial outside.Further, sensor part 191 configures in the mode of the optical axis detecting light towards axis.
Slit plate 192 is fixed on wheel component 14 and the identification elements that configures in the circumferential centered by rotating center axis J1 of multiple slit.That is, the identification elements of present embodiment is the plate with the multiple slits configured in the circumferential.This slit plate 192 is made up of the plate member of the ring-type being formed with the multiple slits 193 extended from inner edge to radial outside, and this slit plate 192 is configured at the outer edge of the joint 142 of wheel component 14.
Slit 193 is made up of the through hole of through slit plate 192 or breach, and slit 193 configures in the circumferential at certain intervals.Further, the radial length of slit 193 is larger than circumferential width.The light-projecting portion in the projection and accepted light portion 194 of sensor part 191 and light-receiving part are opposed in the axial direction with the inner edge portion of slit plate 192 respectively.
The rotation of control wheel parts 14 is used for from the testing signal of sensor part 191 output.Further, described testing signal can be used in the skidding between detection friction means and adjusts the rotating speed of electric motor 20.Or described testing signal can be used in detecting malrotation according to the increase of skidding, and exports the warning signal for notifying user's exception.Or described testing signal can be used in detecting malrotation and the stop signal exported for making electric motor 20 stop.This sensor part 191 utilizes the secure components such as screw 6 to be fixed on bearing accommodating part 163.
The distribution cable 7 extended from sensor part 191 is for power to sensor part 191 and from the transmission line of sensor part 191 output detections signal, distribution cable 7 through be formed at case member 16 cylindrical part 162 distribution groove 164 in and drawn by the outside to speed reducer 10.Groove 164 be formed at cylindrical part 162 outer circumferential face and in the axial direction with roughly equal width extend groove, groove 164 holds distribution cable 7.
The sensor mounting hole 146 for installing or removing encoder 19 is formed in the bottom 145 of wheel component 14.Sensor mounting hole 146 is through holes of through bottom 145, and sensor mounting hole 146 is configured at the outer edge of joint 142.The sensor part 191 of encoder 19 is exposed via the sensor mounting hole 146 of wheel component 14.
The assembling method when sensor part 191 of encoder 19 being installed on case member 16 is as described below.First, in a first step, distribution cable 7 is contained in groove 164, draw sensor part 191 from the sensor mounting hole 146 of wheel component 14, configure input shaft bearing 5, sun roller 11, planetary rollers 12, planet carrier pin 13, wheel component 14, inner ring 15, case member 16 in this condition, export bearing 17, wheel bearing 18, force application part 153 and slit plate 192.
Then, in the second step, after in the sensor mounting hole 146 sensor part 191 being contained in wheel component 14, make sensor part 191 sliding facing to radial outside along slit plate 192, thus the projection and accepted light portion 194 of sensor part 191 is configured in the inner edge portion of slit plate 192.Sensor part 191 is fixed on case member 16 in this condition.In third step, wheel cover 4 is installed on wheel component 14, thus seal sensor mounting hole 146, complete speed reducer 10.
Wheel cover 4 is discoideus parts, and wheel cover 4 has to the outstanding protuberance in electric motor 20 side at central part.Wheel cover 4 is by being installed on wheel component 14 in the recess that described protuberance is inserted into the bottom 145 being formed at wheel component 14.The described recess of bottom 145 is formed by the position of the end face side of sun roller 11 axially than joint 142 by ceiling plate portion 144 being configured in.
This wheel cover 4 utilizes the secure components such as screw 3 to be fixed on bottom 145.Secure component 3 is configured at the outer edge of wheel cover 4.By wheel cover 4 being installed on the bottom 145 of wheel component 14, this wheel cover 4 can be utilized to close sensor mounting hole 146.
Fig. 3 is the explanatory drawing of an example of the detailed construction that speed reducer 10 is schematically shown, enlargedly show friction means, wheel component 14, case member 16, exports bearing 17 and wheel bearing 18.Figure 3 illustrates a part for section when utilizing the plane cut-out speed reducer 10 comprising rotating center axis J1.
The cylindrical part 162 of case member 16 limits inner ring 15 and moves to radial outside.Therefore, by being contained between cylindrical part 162 and sun roller 11 by planetary rollers 12, certain contact can be guaranteed between inner ring 15 and the minor diameter part 122 of planetary rollers 12 and between the large-diameter portion 121 of planetary rollers 12 and sun roller 11.
If the position that sun roller 11 contacts with planetary rollers 12 is called contact position 8, then the axial position of wheel bearing 18 and the overlapping at least partially of contact position 8.That is, when observing from radial direction, wheel bearing 18 is overlapping diametrically with contact position 8.And, output bearing 17 is configured in and leans on axial side, the position of namely contrary with electric motor 20 side than the central position of the axis of contact position 8, and wheel bearing 18 is configured in the position leaning on axial opposite side, i.e. electric motor 20 side than the central position of the axis of contact position 8.
Distance A between center exports the distance between the center of axis of bearing 17 and the center of the axis of contact position 8, and this distance A determines according to the configuration of friction means substantially.On the other hand, the large-diameter portion 121 of preferred planetary rollers 12 and the contact of sun roller 11 are separated into the contact between the input side ring 152 of contact between the output side ring 151 of inner ring 15 and the minor diameter part 122 of planetary rollers 12 and inner ring 15 and the minor diameter part 122 of planetary rollers 12 equably.
Be dispersed to make the load putting on wheel component 14 and export bearing 17 and wheel bearing 18, preferably separate configuration exports bearing 17 and wheel bearing 18 as far as possible.Distance B between the center of the center of the axis of wheel bearing 18 and the axis of contact position 8 considers these situations and determines.
It is described above for forming according to each parts of the speed reducer 10 of an exemplary mode of execution of the present utility model.Below, the correlation of these parts and consequent action effect are described in detail.
According in the speed reducer 10 of an exemplary mode of execution of the present utility model, wheel component 14 is supported on case member 16 by output bearing 17 and wheel bearing 18.Especially the cylindrical part 143 of wheel component 14 extends along the outer circumferential face of case member 16, and is supported on case member 16 by the wheel bearing 18 be configured between the cylindrical part 143 of wheel component 14 and the outer circumferential face of case member 16.Further, because the inner ring 15 contacted with planetary rollers 12 is supported by case member 16, the load therefore putting on wheel component 14 can not directly put on inner ring 15.Therefore, speed reducer 10 can alleviate the situation that the load putting on wheel component 14 puts on friction means.
Further, in speed reducer 10, export bearing 17 and be configured in the position leaning on axial side than the central position of the axis of contact position 8, wheel bearing 18 is configured in the position leaning on axial opposite side than the central position of the axis of contact position 8.Therefore, the load putting on wheel component 14 is dispersed to and exports bearing 17 and wheel bearing 18, and therefore speed reducer 10 can alleviate the situation that load puts on friction means further.
According in the speed reducer 10 of an exemplary mode of execution of the present utility model, friction means is made up of sun roller 11, planetary rollers 12 and inner ring 15, utilizes the frictional force transmission between the side face of friction means to rotate.Therefore, can not produce because of the back clearance as gear rock and/or angular velocity change, speed reducer 10 can reduce transmit rotate time vibration and noise.
According in the speed reducer 10 of an exemplary mode of execution of the present utility model, the cylindrical part 143 of wheel component 14 is the wheels keeping tire 2.Therefore, sun roller 11, planetary rollers 12 and wheel component 14 become primary speed-down mechanism, and therefore the parts number of packages of speed reducer 10 tails off, and can simplify the structure of speed reducer 10, thus can make speed reducer 10 miniaturization.
According in the speed reducer 10 of an exemplary mode of execution of the present utility model, the position of wheel bearing 18 is overlapping diametrically with the position of contact position 8.Therefore, the axial dimension of case member 16 shortens, therefore, it is possible to make speed reducer 10 slimming.
Further, in speed reducer 10, planetary rollers 12 has large-diameter portion 121 and minor diameter part 122, and large-diameter portion 121 contacts with the outer circumferential face of sun roller 11, and minor diameter part 122 contacts with the inner peripheral surface of inner ring 15.Therefore, speed reducer 10 can improve the reduction speed ratio of wheel component 14 and sun roller 11.Therefore, such as, can be realized the reduction speed ratio of secondary amount by primary speed-down mechanism, speed reducer 10 slimming further can be made.Reduction speed ratio is the ratio of the rotating speed of sun roller 11 and wheel component 14.
Further, in speed reducer 10, inner ring 15 is opposed in the axial direction with the large-diameter portion 121 of planetary rollers 12.Therefore, the axial dimension of planetary rollers 12 and inner ring 15 shortens, therefore, it is possible to make speed reducer 10 slimming further.
Speed reducer 10 according to an exemplary mode of execution of the present utility model has the force application part 153 exerted a force vertically relative to case member 16 to inner ring 15.Therefore, it is possible to easily adjust the frictional force between sun roller 11, planetary rollers 12 and inner ring 15 by force application part 153.
According in the speed reducer 10 of an exemplary mode of execution of the present utility model, the joint 142 of wheel component 14 makes the planet carrier pin support 141 arranged for each planetary rollers 12 be interconnected.Therefore, speed reducer 10 can keep the wheel of tire 2 to rotate by Direct driver, thus can reduce the transmission loss of rotating energy.
According in the speed reducer 10 of an exemplary mode of execution of the present utility model, encoder 19 is configured in enclosed space, this enclosed space by wheel component 14, case member 16, export bearing 17 and wheel bearing 18 and cut off by with outside.Therefore, speed reducer 10 can prevent from causing encoder 19 fault because of the impact of dust, water, lubrication wet goods.
Further, in speed reducer 10, encoder 19 is configured between wheel component 14 and case member 16.Therefore, speed reducer 10 can suppress encoder 19 by the impact of the lubricant oil be filled in case member 16, lubricating grease.
According in the speed reducer 10 of an exemplary mode of execution of the present utility model, be formed with the sensor mounting hole 146 that the sensor part 191 of encoder 19 is exposed in the bottom 145 of wheel component 14.Therefore, speed reducer 10 is configured to via the sensor mounting hole 146 of wheel component 14 close to case member 16, thus can to make the installation and removal facilitation of sensor part 191.Such as, even wheel component 14 is installed on the state of case member 16, also sensor part 191 can be installed on case member 16, or can from case member 16 removal sensor portion 191.
According in the speed reducer 10 of an exemplary mode of execution of the present utility model, the sensor part 191 of encoder 19 is configured in the position of specific output bearing 17 by radial outside.Therefore, speed reducer 10 can make the designs simplification of the case member 16 in sensor installation portion 191.
According in the speed reducer 10 of an exemplary mode of execution of the present utility model, friction means is made up of sun roller 11, planetary rollers 12 and inner ring 15, utilizes the frictional force transmission between the side face of friction means to rotate.Therefore, the area of contact between sun roller 11 and planetary rollers 12 becomes large, therefore, it is possible to make sun roller 11 path, and can improve reduction speed ratio.
Such as, in the speed reducer of the gear transmission mode be made up of intermeshing sun gear, planetary pinion and internal gear at friction means, reduction speed ratio is limited with 1/10.On the other hand, in speed reducer 10, the reduction speed ratio of 1/20 can be realized, the scope of reduction speed ratio can be covered 1/4 ~ 1/20.
In addition, in an exemplary mode of execution of the present utility model, example when being made up of sun roller 11, planetary rollers 12 and inner ring 15 friction means is illustrated, but the structure of friction means of the present utility model is not limited thereto.Such as, the utility model also can be applied to the speed reducer of the gear transmission mode that friction means is made up of intermeshing sun gear, planetary pinion and internal gear.
Described sun gear is the sun rotor rotated centered by rotating center axis J1.Planetary pinion be configured in than sun gear by radial outside position and be passed the planetary rotation body of rotation by engaging with sun gear.Internal gear surrounds plural planetary pinion and the rotatable parts of ring-type planetary pinion being rotated centered by rotating center axis J1 by engaging with planetary pinion.
And, in an exemplary mode of execution of the present utility model, example when being made up of primary speed-down mechanism sun roller 11, planetary rollers 12 and wheel component 14 is illustrated, but the utility model also can be applied to the speed reducer of the reducing gear with more than secondary.
Further, in an exemplary mode of execution of the present utility model, example when being transmissive optical formula rotating coders to encoder 19 is illustrated, but the structure of encoder of the present utility model 19 is not limited thereto.Such as, encoder 19 also can be the reflection-type optical formula rotating coder receiving the reflected light that reflected by identification elements and generate testing signal.In reflection-type optical formula rotating coder, form identification elements by configuring the mutually different multiple object of reflectivity in the circumferential.The light-receiving part of sensor part is received from light-projecting portion injection and the detection light reflected by identification elements.
Further, encoder 19 also can be detect to the change in the magnetic field produced by identification elements the magnetic coder generating testing signal.In magnetic coder, form identification elements by configuring multiple magnet in the circumferential.Sensor part have employed magnetic quantity transducer, the such as Hall element of the change detecting magnetic field.
Claims (11)
1. a speed reducer, it has:
Sun rotor, described sun rotor rotates centered by rotating center axis;
Plural planetary rotation body, described plural planetary rotation body is configured in than the position of described sun rotor by radial outside, and described plural planetary rotation body is passed rotation by contacting with described sun rotor;
Planet carrier pin, described planetary rotation body supports as rotating freely by described planet carrier pin;
Wheel component, described wheel component is by described plural planetary rotation body supporting for rotating, and described wheel component rotates centered by described rotating center axis;
The rotatable parts of ring-type, described rotatable parts surround described plural planetary rotation body, and described rotatable parts, by contacting with described planetary rotation body, make described planetary rotation body rotate centered by described rotating center axis;
Case member, described case member surrounds described sun rotor and described planetary rotation body, and described case member supports described rotatable parts; And
Bearing, described wheel component supports as can rotate relative to described case member by described bearing,
The feature of described speed reducer is,
Described wheel component has:
Planet carrier pin support, described planet carrier pin support supports described planet carrier pin;
Joint, described joint extends from described planet carrier pin support towards radial outside; And
Cylindrical part, the outer circumferential face of described cylindrical part from the outer edge of described joint along described case member extends,
Described bearing comprises:
Export bearing, described output bearing is configured between the inner peripheral surface of described case member and described planet carrier pin support; And
Wheel bearing, described wheel bearing is configured between the outer circumferential face of described case member and the inner peripheral surface of described cylindrical part.
2. speed reducer according to claim 1, is characterized in that,
Described sun rotor is sun roller,
Described planetary rotation body is the planetary rollers contacted with the outer circumferential face of described sun roller,
Described rotatable parts are the inner ring with the inner peripheral surface contacted with the outer circumferential face of described planetary rollers.
3. speed reducer according to claim 2, is characterized in that,
The described cylindrical part of described wheel component is the wheel keeping tire.
4. speed reducer according to claim 2, is characterized in that,
The contact position that the axial position of described wheel bearing contacts with described sun roller and described planetary rollers overlapping at least partially.
5. the speed reducer according to any one of claim 2 to 4, is characterized in that,
Described output bearing is configured in the position of central position by axial side of the axis of the contact position contacted with described planetary rollers than described sun roller,
Described wheel bearing is configured in the position leaning on axial opposite side than the central position of the axis of described contact position.
6. the speed reducer according to any one of claim 2 to 4, is characterized in that,
Described planetary rollers has the different large-diameter portion of diameter and minor diameter part,
Described large-diameter portion contacts with the outer circumferential face of described sun roller,
Described minor diameter part contacts with the inner peripheral surface of described inner ring.
7. speed reducer according to claim 6, is characterized in that,
Described speed reducer comprises the force application part exerted a force vertically relative to described case member to described inner ring,
Described inner ring is opposed in the axial direction with the described large-diameter portion of described planetary rollers.
8. speed reducer according to any one of claim 1 to 4, is characterized in that,
The described joint of described wheel component makes the described planet carrier pin support arranged for each described planetary rotation body be interconnected.
9. speed reducer according to any one of claim 1 to 4, is characterized in that,
Described speed reducer comprises the encoder of the rotation detecting described wheel component,
Described wheel component is drum with the end, is made up of the bottom of described wheel component described planet carrier pin support and described joint,
Described wheel bearing is configured in the opening side of described wheel component,
Described encoder has:
Identification elements, described identification elements is fixed on described wheel component, and described identification elements circumferentially configures centered by described rotating center axis; And
Sensor part, described sensor part is fixed on described case member, and described sensor part, by reading described identification elements, generates the testing signal of the rotating speed representing described wheel component.
10. speed reducer according to claim 9, is characterized in that,
The described sensor part of described encoder is configured in the bottom side of described wheel component,
Described wheel component has the sensor mounting hole making the described sensor part of described encoder be exposed to the outer edge of described bottom.
11. speed reducer according to claim 9, is characterized in that,
The described sensor part of described encoder is configured in the position than described output shaft breasting radial outside.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-196398 | 2014-09-26 | ||
| JP2014196398A JP2016070285A (en) | 2014-09-26 | 2014-09-26 | Speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205047764U true CN205047764U (en) | 2016-02-24 |
Family
ID=55341345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520705216.8U Expired - Fee Related CN205047764U (en) | 2014-09-26 | 2015-09-11 | Deceleration device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2016070285A (en) |
| CN (1) | CN205047764U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553017A (en) * | 2018-05-31 | 2019-12-10 | 日本电产新宝株式会社 | transmission with motor and trolley drive unit |
| CN111219256A (en) * | 2018-11-23 | 2020-06-02 | 赛峰传动系统公司 | Lubricating oil distributor for mechanical reducers of turbine engines of aircraft |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017207193A (en) * | 2016-05-16 | 2017-11-24 | 日本電産シンポ株式会社 | Traction speed reducer and speed reducer with electric motor |
| JP7207628B2 (en) * | 2017-10-18 | 2023-01-18 | 日本電産シンポ株式会社 | transmission |
-
2014
- 2014-09-26 JP JP2014196398A patent/JP2016070285A/en active Pending
-
2015
- 2015-09-11 CN CN201520705216.8U patent/CN205047764U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553017A (en) * | 2018-05-31 | 2019-12-10 | 日本电产新宝株式会社 | transmission with motor and trolley drive unit |
| CN111219256A (en) * | 2018-11-23 | 2020-06-02 | 赛峰传动系统公司 | Lubricating oil distributor for mechanical reducers of turbine engines of aircraft |
| CN111219256B (en) * | 2018-11-23 | 2023-12-08 | 赛峰传动系统公司 | Lubricating oil dispenser for a mechanical retarder of a turbine engine of an aircraft |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016070285A (en) | 2016-05-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20200911 |