CN106917772A - Oil-lubricated bearing device and vavuum pump - Google Patents
Oil-lubricated bearing device and vavuum pump Download PDFInfo
- Publication number
- CN106917772A CN106917772A CN201610855037.1A CN201610855037A CN106917772A CN 106917772 A CN106917772 A CN 106917772A CN 201610855037 A CN201610855037 A CN 201610855037A CN 106917772 A CN106917772 A CN 106917772A
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- China
- Prior art keywords
- lubricating oil
- retainer
- lubrication groove
- inclined plane
- rotor
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/02—Multi-stage pumps
- F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
- F04D19/042—Turbomolecular vacuum pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/059—Roller bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/063—Lubrication specially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rolling Contact Bearings (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The present invention provides a kind of oil-lubricated bearing device and vavuum pump, can suppress to stir the generation of resistance.Oil-lubricated bearing device includes：Used as the conic of cone-shaped component, located at being fixed with the axle of lubrication groove, and it is the taper surface that goes up a slope to be formed with towards lubrication groove；Wick, configures in the side for being provided with conic relative to lubrication groove；And contact site, contact to taper surface, the lubricating oil of wick is supplied to taper surface.Also, retainer includes：Bag, with foreign steamer side opening and lubrication groove side opening, keeps rotor；Scraping portion, is formed at the inner peripheral surface of bag, and scraping is attached to the lubricating oil on rotor surface；And taper surface, the retainer outer peripheral face abutted with foreign steamer side opening is formed in, it is upward slope towards wick.
Description
Technical field
The present invention relates to a kind of oil-lubricated bearing device and vavuum pump (pump).
Background technology
It is the lubrication that plane of rotation is maintained by the micro lubricating oil of sustainable supply in the rolling bearing of high speed rotation,
And lubricating oil more than requirement to prevent necessary amount is attached to plane of rotation.If being attached to plane of rotation more than the lubricating oil needed for lubrication,
The stirring resistance of lubricating oil can be then produced, so that the reason for turning into heating.
Used as the lubricating method of the rolling bearing in vavuum pump, proposition has the method described in patent document 1.Patent document
Following structures are employed in rolling bearing described in 1：Circular cone (taper is set on the axle (shaft) rotated together with lubrication groove
Cone) the component of shape, makes set felt (felt) shape component in lubrication stowage arrangement contact to the coniform face, by centrifugation
Power supplies to lubrication groove lubricating oil.And it is set to following structures：Lubricating oil is via rotor (ball (ball)) from lubrication groove
Plane of rotation (also referred to as orbital plane) is supplied to the plane of rotation of foreign steamer, and returns to the remaining lubricating oil overflowed from the plane of rotation of foreign steamer
To lubrication stowage arrangement.
[prior art literature]
[patent document]
No. 5303137 publications of [patent document 1] Japanese Patent No.
The content of the invention
[invention problem to be solved]
But, due to being the structure for making the remaining lubricating oil overflowed from plane of rotation be back to lubrication stowage arrangement, therefore
Will there is the lubricating oil needed for exceeding lubrication in the state of lubricating oil overflows, on plane of rotation, so as to cannot avoid stirring resistance
Generation.
[means of solve problem]
The oil-lubricated bearing device of the preferred embodiment of the present invention includes：Rolling bearing, with lubrication groove, foreign steamer, rotation
The retainer at the interval of body and the maintenance rotor, and support rotary shaft；Cone-shaped component, located at being fixed with the lubrication groove
In the rotary shaft, be formed with towards the lubrication groove for go up a slope (inclination set the increased mode of radius of turn) the
1 inclined plane；Lubricating oil storage unit, configures and is being provided with the side of the cone-shaped component relative to the lubrication groove；And contact site,
Contact is supplied to the 1st inclined plane, the holding lubricating oil of the lubricating oil storage unit to the 1st inclined plane
Device includes：Bag, with foreign steamer side opening and lubrication groove side opening, keeps the rotor；Lubricating oil scraping portion, is formed at described
The inner peripheral surface of bag, scraping is attached to the lubricating oil on the rotor surface；And the 2nd inclined plane, opened along the foreign steamer side
Mouthful and be formed at the inner peripheral surface, be upward slope towards the lubricating oil storage unit.
In preferred implementation method, the lubricating oil scraping portion possesses multiple convex portions, and the multiple convex portion is described
Formed in the way of arranging in the circumferential direction in the region of the foreign steamer side opening side of inner peripheral surface.
In preferred implementation method, in the 2nd inclined plane, the projection protruded from the inclined plane is formed with.
In preferred implementation method, the cone-shaped component is detachably to be located at the rotary shaft, will be described interior
Wheel is fixed on the lubrication groove fixing component of the rotary shaft.
In preferred implementation method, including：Lubricating oil guide portion, the retainer and be configured at foreign steamer side, with institute
State lubricating oil storage unit and the foreign steamer is in contact, the lubricating oil dispersed from the 2nd inclined plane is guided to the lubrication
Oily storage unit.
The oil-lubricated bearing device of the preferred embodiment of the present invention includes：Rolling bearing, with lubrication groove, foreign steamer, rotation
The retainer at the interval of body and the maintenance rotor, and support rotary shaft；Cone-shaped component, located at being fixed with the lubrication groove
In the rotary shaft, it is the 1st inclined plane gone up a slope to be formed with towards the lubrication groove；Lubricating oil storage unit, it is interior relative to described
Take turns and configure and be provided with the side of the cone-shaped component；And contact site, contact to the 1st inclined plane, by the lubrication
The lubricating oil of oily storage unit is supplied to the 1st inclined plane, and the retainer includes：Bag, is through to from retainer inner peripheral surface
Retainer outer peripheral face, keeps the rotor；2nd inclined plane, is formed at the retainer outer peripheral face, with close to the lubrication
Oily storage unit, increases and from the distance of shaft core to go up a slope；3rd inclined plane, is formed at the retainer inner peripheral surface, with away from institute
Lubricating oil storage unit is stated, is increased from the distance of shaft core and is descending；And joint face, it is formed at and is with the lubricating oil storage unit
The retainer end of opposition side, the 2nd inclined plane is connected with the 3rd inclined plane.
In preferred implementation method, in the 2nd inclined plane, it is formed through between bag described in adjacent a pair
And the jut extended in crest towards the direction of the lubricating oil storage unit from the side of the joint face.
In preferred implementation method, at least one position of the bag is from the lubrication groove side opening of periphery seal to surrounding
The foreign steamer side opening of closing runs through.
In preferred implementation method, the engagement of more than two components is formed integration by the retainer.
The vavuum pump of the preferred embodiment of the present invention includes：The oil-lubricated bearing device；And impeller of pump (pump
Rotor), it is arranged in the rotary shaft.
[The effect of invention]
In accordance with the invention it is possible to suppress to stir the generation of resistance.
Brief description of the drawings
Fig. 1 is the profile of turbine (turbo) molecular pump.
Fig. 2 is by the figure of the part enlarged representation of oil-lubricated bearing device.
Fig. 3 is the stereogram of the face shaping for representing retainer.
Fig. 4 (a), Fig. 4 (b) are the figures illustrated to the action of rotor and retainer.
Fig. 5 is the figure illustrated to the circulating path of lubricating oil.
Fig. 6 (a), Fig. 6 (b) are the figures of the concrete example of the shape for representing scraping portion.
Fig. 7 (a), Fig. 7 (b) are the figures of the variation for representing scraping portion.
Fig. 8 (a), Fig. 8 (b), Fig. 8 (c) are the figures of the 3rd variation for representing scraping portion.
Fig. 9 is the figure for representing the projection for being formed at taper surface.
Figure 10 is the figure of another that represents the inclined plane for being formed at retainer.
Figure 11 (a), Figure 11 (b) are other the figures for representing lubricating oil guide portion.
Figure 12 is the figure of the oil-lubricated bearing device for representing the 2nd implementation method.
Figure 13 is to maintain the exploded perspective view of device.
Figure 14 is the figure illustrated to the face shape of retainer.
Retainer when Figure 15 is the retainer axial direction upside opening for representing bag.
Figure 16 is the figure of the variation for representing the 2nd implementation method.
[explanation of symbol]
1：Turbomolecular pump
2：Pedestal
3：Impeller of pump
4：Motor
4a：Motor rotor
4b：Motor stator
6：Permanent magnet magnetic bearing
6a、6b：Permanent magnet
8、9：Ball bearing
10：Axle
11：Magnet holder
12：Pump case
13、114：The support of bearing
15：Lower cover
20：Fixed blade
21：Cylindrical stator
30：Rotating vane
31：Cylindrical portion
81：Foreign steamer
81a、82a：Plane of rotation
82：Lubrication groove
83：Rotor
84：Retainer
84a：Lower retainer
84b：Top retainer
90：Lubricating oil
100：Oil-lubricated bearing device
101：Wick
101a：Contact site
102：Conic
102a、841、842：Taper surface
103、106：Bearing compressing tablet
104：Dome-like roof
116：Radial direction buffer part
840：Bag
840a：Inner peripheral surface
840b：Scraping portion
840c：Foreign steamer side opening
840d：Lubrication groove side opening
841a：Lower end
841b：Jut
843、843b：Convex portion
844：Gap
845：Projection
845a、845b、851a、851b：Inclined-plane
845c：Top
846：Bearing surface
847a：Through hole
847b：Junction surface
848a、848b：Inclined plane
849、850：Joint face
851：Jut
J：Shaft core
P1：Turbine pumping section
P2：Holweck pumping section
R：Rotation body unit
Specific embodiment
Hereinafter, with reference to schema come to being illustrated for implementing form of the invention.
- the 1 implementation method-
Fig. 1 is the figure of the implementation method for representing oil-lubricated bearing device of the invention, is to be equipped with oil-lubricated bearing dress
The profile of the turbomolecular pump 1 put.In addition, being connected with the power subsystem (unit) of supply electric power, Fig. 1 on turbomolecular pump 1
In eliminate diagram.
Turbomolecular pump 1 shown in Fig. 1 includes following pumping section as degassing function portion：Turbine pumping section P1, possesses turbine leaf
Piece；And Holweck (Holweck) pumping section P2, possess the groove of screw type.Certainly, the present invention is not limited to degassing function portion tool
The vavuum pump of standby turbine pumping section P1 and Holweck pumping section P2, it is also possible to the vavuum pump that is applied to only to possess turbo blade, only
Possess the vavuum pump of the traction pumps such as siegbahn's (Siegbahn) pump or Holweck pump (drag pump) or combine them
Vavuum pump.
Turbine pumping section P1 includes being formed at the multistage rotating vane 30 of impeller of pump 3 and configuration in many of the side of pedestal (base) 2
The fixed blade 20 of section.On the other hand, being located at the Holweck pumping section P2 in the exhaust downstream of turbine pumping section P1 includes being formed at pump
The stator (stator) 21 of the cylindrical portion 31 of impeller 3 and configuration in the side of pedestal 2.It is formed with the inner peripheral surface of cylindrical stator 21
Helicla flute.Multistage rotating vane 30 constitutes rotary side degassing function portion with cylindrical portion 31, and multistage fixes blade 20 and the structure of stator 21
Into affixed side degassing function portion.
Impeller of pump 3 is anchored on axle 10, and the axle 10 is by the rotation driving of motor (motor) 4.For motor 4, for example, use direct current
(Direct Current, DC) is brushless (brush less) motor, is provided with motor stator 4b on the base 2, is provided with the side of axle 10
Motor rotor 4a.Rotary body unit R comprising axle 10 and impeller of pump 3 is by the permanent magnet magnetic bearing 6 using permanent magnet 6a, 6b and work
For the ball bearing 8 of rolling bearing is rotatably supported.
Permanent magnet 6a, 6b are permanent magnets vertically through magnetized ring (ring) shape.Located at multiple permanent magnets of impeller of pump 3
6a by homopolarity toward each other in the way of and be configured with multiple vertically.On the other hand, multiple permanent magnet 6b of affixed side are mounted
It is being fixed in the magnet holder 11 of pump case (pump casing) 12.These permanent magnets 6b be also with homopolarity toward each other
Mode and be configured with multiple vertically.Axial location located at the permanent magnet 6a of impeller of pump 3 is configured to, and is relatively configured at its inner circumferential
The position of the permanent magnet 6b of side and be slightly upside.That is, magnetic of the magnetic pole of the permanent magnet of rotary side relative to the permanent magnet of affixed side
Pole and be axially offset from ormal weight.According to the size of the ormal weight, the support force of permanent magnet magnetic bearing 6 is different.Example shown in Fig. 1
In son, permanent magnet 6a is configured in diagram upside, therefore by the repulsion of permanent magnet 6a and permanent magnet 6b, footpath (radial) to
Support force is with axially the power of (pump exhaust inlet side to) acts on rotary body unit R upward.
In the center of magnet holder 11, the support of bearing (bearing holder) 13 for keeping ball bearing 9 is fixed with.Figure
In 1, deep groove ball bearing is used for ball bearing 8,9, but be not limited to this, for example, angular contact bearing (angular also can be used
contact bearing).Ball bearing 9 stops bearing (touch down as the contact for radially wobbling on limitation axle top
Bearing) function.Under constant rotation status, axle 10 will not come in contact with ball bearing 9, and be done by big
In the case that the beat of axle 10 becomes big when situation about disturbing or the acceleration in rotation or when slowing down, axle 10 can touch ball axle
Hold 9.
Ball bearing 8 is kept by the support of bearing 114 being held stationary in pedestal 2.In the periphery of ball bearing 8
Side, is provided with the radial direction buffer part (radial damper) 116 of ring-type.For the material of radial direction buffer part 116, rubber etc. is used
Elastomer (elastomer).Ball bearing 8 is the rolling bearing of oil lubricating type, is possessed for supplying lubricating oil to ball bearing 8
Lubricating oil storage unit, i.e. wick 101.Wick 101 is held between the support of bearing 114 and lower cover 15.
Fig. 2 is by the figure of the part enlarged representation of the oil-lubricated bearing device 100 comprising ball bearing 8 and the grade of wick 101.
In ball bearing 8, lubrication groove 82 is fixed on axle 10 by the conic 102 as cone-shaped component function.Conic
102 by detachably located at the lower end of the axle 10 for being formed with male thread.The foreign steamer 81 of ball bearing 8 passes through bearing compressing tablet 103
And it is fixed on the support of bearing 114.Rotor 83 is kept by retainer 84.
The outer peripheral face of conic 102 turns into and attenuates towards front end from the side of the lubrication groove 82 for being connected to ball bearing 8
Taper surface 102a.That is, it is the inclined plane gone up a slope that taper surface 102a turns into towards lubrication groove 82.In the inner circumferential of ring-type wick 101
Face, is formed with inwards prominent contact site 101a, and contact site 101a is contacted to the taper surface 102a of conic 102.Oil
Core 101 includes the component of the felted or sponge (sponge) shape that can keep lubricating oil, maintains lubricating oil.In ball bearing 8
Between foreign steamer 81 and wick 101, dome-like roof 104 is provided with the way of being contacted with them.Dome-like roof 104 is to utilize capillary
The lubricating oil of foreign steamer 81 is transferred to pipe phenomenon the component of wick 101.For example, can be both formed with the inner peripheral surface of pipe porous
Plastid, it is possible to use such as the fibrous person of felt etc, can also be formed by Porous material of sponge or sintering metal etc etc..
Fig. 3 is the stereogram of the face shaping for representing retainer 84.In retainer 84, multiple holding rotors are formed with
83 bag 840.Retainer 84 shown in Fig. 3 is crown type retainer, and bag 840 turns on the upside of the axial direction of retainer 84
Divide the through hole opened.In addition, illustrated by taking crown type retainer as an example in present embodiment, but it is not limited to the shape
The retainer of formula.
In the outer peripheral face of retainer 84, the foreign steamer side opening 840c with bag 840 is adjacently formed with taper surface 841.Such as
Shown in the profile of Fig. 2, taper surface 841 is with the end close to lubricating oil storage unit (wick 101) side of retainer 84
840e (reference picture 3) and inclined away from the mode of the central shaft (shaft core J) of retainer 841.That is, taper surface 841 is formed at
The retainer outer peripheral face abutted with foreign steamer side opening 840c, and be the inclined plane gone up a slope towards wick 101.Taper surface 841
The outer peripheral face of lower end 841a lower sides turns into the taper surface 842 that radius reduces, and the lower end 841a of taper surface 841 turns into retainer 84
Most external diameter.
And, in the inner peripheral surface 840a of bag 840, scraping portion 840b being formed with, scraping portion 840b is used to scrape attachment
In the lubricating oil on the surface of rotor 83.In addition, scraping portion 840b is in small concaveconvex shape, in Fig. 3, illustrate with dashed lines to be formed
Have scraping portion 840b scope (Fig. 4 (a) described later, Fig. 4 (b) situation similarly).The concrete shape of scraping portion 840b is by after
State.
Fig. 4 (a), Fig. 4 (b) are that the action of the rotor 83 and retainer 84 when being rotated to ball bearing 8 is illustrated
Figure.Fig. 4 (a) is plan, and Fig. 4 (b) is A arrow views.Rotor 83 is contacted to the plane of rotation 82a and foreign steamer 81 of lubrication groove 82
Plane of rotation 81a.When the rotate counterclockwise such as arrow R1 of lubrication groove 82, rotation is public counterclockwise on one side clockwise on one side for rotor 83
Transhipment is dynamic.When 83 revolution motion counterclockwise of rotor, retainer 84 is also rotated body 83 and pushes to make rotate counterclockwise.In bag
The scraping portion 840b formed on 840 inner peripheral surface 840a is formed in the inner peripheral surface 840a of revolution direction side.Fig. 4 (a), Fig. 4 (b)
Also the situation with Fig. 3 is same, is labeled with the shown in phantom scope for being formed with scraping portion 840b of symbol 840b.
As described above, having scraping portion along the formation that one side of rotor 83 that revolution motion is made in R1 directions is connected to retainer 84
The inner peripheral surface 840a of the side of 840b, an edge R2 directions rotation.Therefore, it is attached to one of the lubricating oil on the surface of rotor 83
Divide by scraping portion 840b scrapings.Because retainer 84 is rotated along R1 directions with high speed, therefore centrifugal action is in being scraped
Lubricating oil, so as to move to periphery surface side by the gap of rotor 83 and the inner peripheral surface 840a of retainer 84.In addition, keeping
Device 84 is rotated with the angular speed of the half of lubrication groove 82 along R1 directions.Rotation is rolled as long as rotor 83 is non-slip, is then turned
The lubrication groove contact point of kinetoplast 83 be with axle (axle 10) identical angular speed, and be zero in foreign steamer contact point angular speed, therefore wherein
Between position rotor center revolution speed for lubrication groove 82 half angular speed.
Fig. 5 is the figure illustrated to the circulating path of lubricating oil.Arrow R3 represents mobile route (the circulation road of lubricating oil
Footpath).As described above, lubricating oil is stored in wick 101.Contacted to tapered by the contact site 101a for being formed at wick 101
The taper surface 102a of nut 102, so that the lubricating oil of contact site 101a is attached to taper surface 102a.Taper surface 102a is from tapered
The front end of nut 102 is closer to the then bigger taper surface of diameter of lubrication groove 82, i.e. is directed towards lubrication groove 82 and is the taper surface that goes up a slope.
Therefore, when conic 102 and axle 10 integratedly rotate at a high speed, under the influence of centrifugal force, the lubrication on taper surface 102a
Oil will be moved towards the bigger direction of radius.That is, lubricating oil is moved on taper surface 102a such as arrow R3 towards the direction of lubrication groove 82
It is dynamic.
The lubricating oil for being moved to lubrication groove 82 from taper surface 102a enters the plane of rotation 82a of lubrication groove 82, and plane of rotation 82a is carried out
Lubrication, and it is also attached to rotor 83.When 83 rotation of rotor of lubricating oil is attached with, as described above, being attached to rotation
A part for the lubricating oil of body 83 is formed on the scraping portion 840b scrapings of retainer 84.When the lubricating oil for being scraped is moved to guarantor
It is under the influence of centrifugal force, bigger towards diameter on taper surface 841 during the taper surface 841 that the outer circumferential side of holder 84 is formed
Diagram downside (wick side) is mobile.When on taper surface 841 down side shifting lubricating oil reach lower end 841a when, lubricating oil because
Centrifugal force and disperse, so as to be attached to the inner peripheral surface or dome-like roof 104 of foreign steamer 81.
As described above, dome-like roof 104 is flown by the inner peripheral surface of foreign steamer 81 or towards the face using capillarity
The lubricating oil for dissipating and coming is guided to the component of wick 101, therefore, it is possible to not influenceed ground by the mounting position of turbomolecular pump 1, is made
The lubricating oil dispersed from retainer 84 is back to wick 101.So, lubricating oil is supplied to ball bearing 8 from wick 101, and
Wick 101 is recovered to from ball bearing 8.
In the case where the retainer same of scraping portion 840b is not set, the plane of rotation of lubrication groove 82 is supplied to
The lubricating oil of 82a is moved to the plane of rotation 81a of foreign steamer 81 by the rotation of rotor 83.And, the plane of rotation 81a of foreign steamer 81
Lubricating oil be also attached to the rotor 83 of rotation and be moved to lubrication groove side, but due to the lubrication groove 82 or retainer of ball bearing 8
84 are rotated at a high speed, therefore, because acting on the centrifugal force of lubricating oil, lubricating oil is easily accumulated in foreign steamer side.As a result, in foreign steamer
On 81 plane of rotation 81a, lubricating oil easily becomes superfluous, so as to the heating that causes because stirring the generation of resistance will be as asking
Topic.
On the other hand, in present embodiment, by scraping portion 840b, one of lubricating oil for being attached to rotor 83
Point, if especially lubricating oil quantitative change is more, the oil film thickness for being formed at the surface of rotor 83 increases, then can correspondingly be scraped
Take, superfluous phenomenon is become therefore, it is possible to the lubricating oil on the plane of rotation 81a for suppressing foreign steamer 81 such that it is able to reduce stirring resistance
Generation.
It (that is, is upper towards wick side that the outer peripheral face being additionally, since in retainer 84 is formed with the shape extended towards wick side
Slope) taper surface 841, therefore by scraping portion 840b scrape lubricating oil will under the influence of centrifugal force, the court on taper surface 841
Wick side shifting.The lubricating oil for being moved to wick side will disperse from the lower end 841a of taper surface 841, finally be recovered to wick
101。
(concrete shape of scraping portion 840b)
Fig. 6 (a), Fig. 6 (b) are the figures of the concrete example of the shape for representing scraping portion 840b.Fig. 6 (a) is to represent retainer 84
A part, i.e. be formed with the figure of the part of the scraping portion 840b of bag 840.Fig. 6 (b) is to be formed with scraping portion 840b and incite somebody to action
Inner peripheral surface 840a is launched into plane shown figure.Rotor 83 is represented with the circle shown in 2 chain lines.The inner peripheral surface of bag 840
840a corresponds to the sphere of rotor 83 and bends, but depicts the inner peripheral surface 840a of the bending as planes in Fig. 6 (b).
In example shown in Fig. 6 (a), Fig. 6 (b), scraping portion 840b is spaced apart in the circumferential direction of inner peripheral surface 840a
Be configured with multiple elongated convex portions with rectangular section.In addition, in Fig. 6 (a), for one of multiple convex portions 843
Divide and eliminate diagram.The bearing of trend (long side direction) of convex portion 843 turns into the approximately axially orthogonal direction with retainer 84.It is many
Individual convex portion 843 is arranged to, and the circumferential direction along the edge of inner peripheral surface 840a along foreign steamer side opening 840c is arranged.Rotor 83
As shown in dotted arrow R2, towards relative to axially orthogonal direction rotation.Some chain lines shown in symbol 830 are comparable to certainly
The line (line) in the so-called equator of the rotor 83 for turning, the translational speed towards direction of rotation on rotor surface under the line near
It is maximum, and is got over towards up and down away from then becoming smaller from the equator.Therefore, multiple convex portions 843 are upper and lower centered on line 830
Configuration, to be effectively lubricated the scraping of oil.
Viscosity of the lubricating oil 90 scraped by the convex portion 843 of scraping portion 840b between rotor surface and lubricating oil 90
Power or in the presence of acting on the centrifugal force of lubricating oil, the side of taper surface 841 is moved to by the gap 844 between convex portion 843.
The lubricating oil 90 of taper surface 841 is moved under the influence of centrifugal force, towards the bigger direction of the diameter of taper surface 841 (diagram
Downside) it is mobile.As shown in figure 5, being configured with wick 101 on the downside of diagram.In addition, the groove depth in gap 844 also can be such as Fig. 6 (a), figure
Be fixed as shown in 6 (b), but lubricating oil scrape taken amount it is increased in the case of, also may be configured as then becoming closer to taper surface 841
Must be deeper, so as to be tackled.
Fig. 7 (a), Fig. 7 (b) are the figures of the variation for representing the scraping portion 840b shown in Fig. 6 (a), Fig. 6 (b).Fig. 6 (a),
In structure shown in Fig. 6 (b), by the multiple convex portions 843 being arranged above and below in diagram in the way of along taper surface 841, along interior
The right-hand member (foreign steamer side opening 840c) of side face 840a and be arranged.On the other hand, in the 1st variation shown in Fig. 7 (a), will
Multiple convex portions 843 configure along the axial direction of retainer 84.But, if convex portion 843 and the hypertelorism of taper surface 841, lead to
The lubricating oil crossed gap 844 and be moved on the right side of diagram is not attached to taper surface 841, and is again attached to the possibility of rotor 83
Property uprise, therefore configure convex portion 843 near taper surface 841 as preferably as shown in Fig. 6 (a), Fig. 6 (b).
Fig. 7 (b) is the figure of the 2nd variation for representing scraping portion 840b, and the section shape of convex portion 843 is set to triangle by expression
The situation of shape.In addition, the inner peripheral surface 840a of rotor 83 and bag 840 strictly speaking not whole curved face contacts, usually exist
The equatorial portion (part shown in Fig. 6 (a), the symbol 830 of Fig. 6 (b)) of the rotor 83 of rotation is contacted with inner peripheral surface 840a.Cause
This, when only convex portion 843 is provided with region corresponding with equatorial portion, if rotor 83 and inner peripheral surface 840a are relatively along axle
Mobile to (diagram above-below direction), then convex portion 843 will become not abundant enough to the scraping of lubricating oil.Therefore, in present embodiment,
Not only in middle position corresponding with equatorial portion, and, towards in the region deviateed up and down, it is also configured with convex from middle position
Portion 843.
Fig. 8 (a), Fig. 8 (b), Fig. 8 (c) illustrate the 3rd variation in scraping portion, and Fig. 8 (b) is C-C profiles.3rd deformation
In example, the convex portion 843b of semi-spherical shape is formed with.In example shown in the expanded view of Fig. 8 (a), make to match somebody with somebody along inner peripheral surface 840a
The multiple convex portion 843b for putting are configured with two row along the sense of rotation R2 of rotor 83.In addition, the columns of sense of rotation R2 is not limited
Also can be a row such as Fig. 8 (c) in two row, also can be set more than three row.
In addition, the shape of scraping portion 840b is not limited to Fig. 6 (a), Fig. 6 (b) to Fig. 8 (a), Fig. 8 (b), Fig. 8 (c) institutes
The structure shown, can use variously-shaped.
According to described implementation method, following action effect can be obtained.
(1) oil-lubricated bearing device 100 includes：As the conic 102 of cone-shaped component, located at being fixed with lubrication groove 82
On axle 10, and it is the taper surface 102a for going up a slope to be formed with towards lubrication groove 82；Wick 101, configures relative to lubrication groove 82 and is being provided with
The side of conic 102；And contact site 101a, contact to taper surface 102a, the lubricating oil of wick 101 is supplied to cone
Shape face 102a.Also, include as retainer 84 is as shown in Figure 3：Bag 840, with foreign steamer side opening 840c and lubrication groove side opening
840d, keeps rotor 83；Scraping portion 840b, is formed at the inner peripheral surface 840a of bag 840, and scraping is attached to the surface of rotor 83
Lubricating oil；And taper surface 841, the retainer outer peripheral face abutted with foreign steamer side opening 840c is formed in, be towards wick 101
Go up a slope.
So, by setting scraping portion 840b on retainer 84, can suppress to be moved to foreign steamer 81 from rotor 83
The lubricating oil of plane of rotation 81a.As a result, the phenomenon that the lubricating oil on the plane of rotation 81a of foreign steamer 81 becomes superfluous is prevented from, from
And the heating caused by can suppressing because stirring resistance.Especially, in the pump for being operated rotary speed is changed according to exhaust load,
Conic 102 can also change to the conveying liquid measure of lubricating oil, therefore, if using no matter under what conditions can be true
The design of lubricants capacity is protected, then will cause to exceed necessary conveying liquid measure under maximum speed, on the other hand, because of stirring resistance
The temperature for causing rises and will become notable.Therefore, also ensured that in the case where rotary speed is high and scrape dimension of the taken amount for rotation
It is important key element for holding, and in the case where rotary speed is high, rotor 83 is contacted with the scraping portion 840b of retainer 84
Number of times can also increase, it is therefore just right.
And then, in the retainer outer peripheral face of the foreign steamer side opening 840c adjoinings with bag 840, it is formed with towards wick 101
It is the taper surface 841 for going up a slope, therefore is scraped by scraping portion 840b and be attached to the lubricating oil of taper surface 841 towards wick 101
Move and disperse in direction.As a result, the lubricating oil as unnecessary lubricating oil from the discharge of ball bearing 8 will be recovered to wick
101 such that it is able to constitute the oil circulation system of the supply and the recovery that are capable of achieving lubricating oil.
And, as device as described in Patent Document 1, lubricating oil is discharged towards the direction different from lubricating oil storage unit
Structure in, it is necessary to formed for making the lubricating oil of discharge be back to the path of lubricating oil storage unit in pump mount base side, so as to tie
Structure becomes complicated, and can cause cost increase.But, it is by from being formed with scraping portion 840b in described implementation method
The lubricating oil that retainer 84 is scraped is expelled to lubricating oil storage unit (wick 101) side, therefore need not be formed in pump mount base side
Complicated path.
In addition, in retainer 84 shown in Fig. 3, taper surface 841 was formed with throughout one week of the outer peripheral face of retainer 84.
However, it is possible to as shown in Figure 10, only the surrounding's outer peripheral face abutted with the foreign steamer side opening 840c of bag 840 is set to towards wick
101 and be go up a slope inclined plane (taper surface 841).
And, in the example shown in Fig. 3, in inner peripheral surface 840a, foreign steamer side is become from lubrication groove side in sense of rotation R2
Scraping portion 840b is formed with region.Its reason is：When lubrication groove 82 rotates along R1 directions as shown in Fig. 4 (b), it is general and
Speech, rotor 83 can be connected to the region.But, when lubrication groove 82 rotates along R1 directions, rotor 83 is not limited to all the time
Being connected to the formation of Fig. 3 has the side of scraping portion 840b, also there is the rotor will be relatively slowly revolved round the sun relative to retainer 84
83.Therefore, also can be as shown in figure 9, not only in the inner peripheral surface of direction of rotation R1 (direction of rotation of the retainer 84 during rotating forward) side
840a, and also forming scraping portion 840b with the inner peripheral surface 840a that direction of rotation R1 is opposition side.
(2) the scraping portion 840b of scraping lubricating oil possesses in the outer of inner peripheral surface 840a for example as shown in Fig. 6 (a), Fig. 6 (b)
The multiple convex portions 843 formed in the way of arranging in the circumferential direction in the region of wheel side opening 840c sides.Opened by foreign steamer side
The convex portion 843 of scraping portion 840b is formed in the region of mouth 840c sides, so that the lubricating oil for being scraped will effectively be moved to taper
Face 841.And, in rotor 83, region and foreign steamer 81 and the plane of rotation of lubrication groove 82 centered on its axial middle body
81a, 82a are in contact, therefore forming multiple convex portions 843 by way of arranging in the circumferential direction such that it is able to efficiency is well
Scraping is attached to the lubricating oil of rotor 83.In addition, the shape of scraping portion 840b is not limited to Fig. 6 (a), Fig. 6 (b) to Fig. 8
A the structure described in (), Fig. 8 (b), Fig. 8 (c), can apply various concaveconvex shapes.
(3) and then, as shown in figure 9, can also form projection 845 on taper surface 841.In example shown in Fig. 9, in taper
The end of the side of wick 101 in face 841 is formed with projection 845.Projection 845 has inclined-plane 845a, 845b, and closest to wick
101 side (diagram lower end) possesses the top 845c of sharp.The lubrication of taper surface 841 is attached to by scraping portion 840b scrapings
Oil 90 under the influence of centrifugal force, such as declines as shown in arrow D along taper surface 841, and along the inclined-plane of projection 845
845a, 845b rise and are moved to top 845c.This kind of lubricating oil for being attached to top 845c is than the lubricating oil that is attached on face
It is easier to disperse.In addition, in example shown in Fig. 9, top 845c is sharp, but also can be not point.
As the region that the position for forming projection 845, the lubricating oil for preferably being scraped by scraping portion 840b are easily concentrated, example
Such as may be formed on the taper surface 841 of scraping portion 840b and the diameter of taper surface 841 reaches maximum end regions.
(4) and, as shown in figure 5, being preferably provided with as the dome-like roof 104 of lubricating oil guide portion, the dome-like roof 104
It is to be configured compared with the outer peripheral face outer peripheral side of retainer 84 and be in contact with wick 101 and foreign steamer 81, will flies from taper surface 841
Scattered lubricating oil is guided to wick 101.By setting this kind of dome-like roof 104, the lubricating oil that will can be dispersed from taper surface 841
Effectively it is recycled to wick 101.As a result, regardless of pump posture, even if for example making with horizontal posture or handstand posture
In the case of with pump, it is also possible to which lubricating oil is effectively recycled in wick 101.
In addition, the dome-like roof 104 shown in Fig. 5 be to reach the inner peripheral surface of foreign steamer 81 in the way of and constituted, but
Dome-like roof 104 can be set in the way of contacting to the lower surface of foreign steamer 81 and wick 101 as shown in Figure 11 (a).And,
Also bearing compressing tablet 106 can be set in the downside of foreign steamer 81 as shown in Figure 11 (b), makes the bearing compressing tablet 106 by sintering metal etc
Porous material formed.Or, it is possible to use the metallic plate for being implemented with porous plating is used as bearing compressing tablet 106.Profit
Lubricating oil is guided to wick 101 by porous electrodeposited coating.
In addition, application porous electroplate in the case of, in the structure shown in Fig. 2, as long as be situated between every in foreign steamer 81 with
Base portion between wick 101 forms porous electrodeposited coating, just the electrodeposited coating can be used as into lubricating oil guide portion.
- the 2 implementation method-
In the bearing for carrying out high speed rotation, the translational speed of rotor is very fast.Also, exist due to bar now
Part, the amount of the lubricating oil splash from the plane of rotation of lubrication groove using rotor than the lubricating oil for being attached to rotor amount more than feelings
Condition.Because centrifugal action is in the plane of rotation of lubrication groove, therefore, if especially in the presence of multiple near the groove end of plane of rotation position
The lubricating oil position slightly more than other positions, then rotor by as triggering, and easily produce this kind of phenomenon.So,
If being attached to foreign steamer side inner peripheral surface by the lubricating oil that rotor splashes, there is the lubricants capacity on foreign steamer plane of rotation to become surplus
Anxiety.
In 2nd implementation method, to the foreign steamer side plane of rotation that can effectively prevent from therefore planting the lubricating oil for splashing and causing
The superfluous lube shaft bearing apparatus of lubricating oil illustrate.Figure 12 is the oil-lubricated bearing device 100 for representing the 2nd implementation method
Profile.The profile that Figure 12 is with described Fig. 5 is same part.Oil-lubricated bearing device 100 includes：Ball bearing 8, shape
Into the conic 102 for having taper surface 102a, wick 101 and dome-like roof 104 with contact site 101a.
In 2nd implementation method, on conic 102, wick 101 and dome-like roof 104, with the 1st implementation method
Corresponding component be identical composition, the composition of the retainer 84 of ball bearing 8 is different from the 1st implementation method.
Figure 13 is to maintain the exploded perspective view of device 84.Retainer 84 includes two parts (84a, 84b).Hereinafter, by this two
Individual part is referred to as lower retainer 84a and top retainer 84b.Lower retainer 84a and top retainer 84b can include various
Material, for example, formed by the synthetic resin material such as polyimides.
In the wherein one side on lower retainer 84a and opposite top retainer 84b against each other, it is formed through
Hole 847a, is formed with the junction surface 847b of buckle-type on another side.In example shown in Figure 12, Figure 13, in lower retainer
Hole 847a is formed through on the bearing surface 846 of 84a, is formed on the bearing surface 846 (invisible in figure) of top retainer 84b
There is junction surface 847b.Junction surface 847b is engaged in through hole 847a, and thus lower retainer 84a and top retainer 84b are into one
Body.
In example shown in Figure 12, Figure 13, retainer 84 can be set to engage two parts and integral composition, but
Or it is integral using a part, can also be integral for the part for making more than three is engaged.And, connected structure is simultaneously
The manner shown in junction surface 847b and through hole 847a is not limited to, various modes can be used.
Figure 14 is the figure illustrated to the face shape of retainer 84.In the periphery of the retainer 84 opposite with foreign steamer 81
On the outer peripheral face in face, i.e., integral lower retainer 84a and top retainer 84b, it is formed with as same with the 1st implementation method
The taper surface 841 of the inclined plane of sample shape.That is, taper surface 841 is with the close wick 101 as lubricating oil storage unit, self-insurance
The distance of the shaft core J of holder 84 increases, and the inclined plane of upward slope is turned into towards wick 101.Also, lower retainer 84a's
The lower end of taper surface 841 is formed with the jut 841b from taper surface 841 towards ring-type protruding outside.
On the other hand, inner peripheral surface, i.e. lower retainer 84a and top retainer in the retainer 84 opposite with lubrication groove 82
On the inner peripheral surface of 84b, it is formed with wick 101 is axially away from, increases from the distance of shaft core J and towards diagram upside
It is the inclined plane (848a, 848b) of descending.In example shown in Figure 14, on the inner peripheral surface of lower retainer 84a, it is formed with and inclines
Inclined-plane 848a, on the inner peripheral surface of the 84b of top retainer, is formed with inclined plane 848b.And then, it is being opposite with wick 101
The retainer end (the retainer end on the upside of the diagram of Figure 14) of side, is formed with and taper surface 841 is connected with inclined plane 848b
Bending joint face 849.
From wick 101 supply to the taper surface 102a of conic 102 lubricating oil under the influence of centrifugal force, such as Figure 14
Dotted arrow R3 shown in as, on taper surface 102a towards the side of lubrication groove 82 direction move.It is moved to from taper surface 102a interior
The lubricating oil of wheel 82 enters to the plane of rotation 82a of lubrication groove 82.The lubricating oil accumulated in the plane of rotation 82a of lubrication groove 82 is utilized at a high speed
The rotor 83 of lower movement and splash, such as arrow R4, arrow R5, the edge of autorotation face 82a disperses.The lubricating oil for dispersing
It is attached to the inclined plane 848a and inclined plane 848b formed on the inner peripheral surface of the retainer 84 opposite with lubrication groove 82.
Retainer 84 together rotates at high speeds with rotor 83, therefore is attached to the lubricating oil of inclined plane 848a in centrifugation
In the presence of power, direction is moved from direction in the increased diagram of the distance of shaft core.Mobile lubricating oil is attached to rotor 83.Separately
Outward, the inclined plane 848a on lower retainer 84a, can not simultaneously exist the part.That is, do not exist in the part of inclined plane 848a
In the case of or it is short in the case of, the lubricating oil major part dispersed towards arrow R4 directions is dispersed towards the direction of wick 101, therefore
Lubricating oil surplus in foreign steamer will not be impacted.
On the other hand, it is attached to the lubricating oil of inclined plane 848b under the influence of centrifugal force, increases towards from the distance of shaft core J
Plus diagram on direction movement, as shown in arrow R7, moved towards joint face 849 from inclined plane 848b.Joint face 849 is connected
To the taper surface 841 of the outer peripheral face for being formed at retainer 84, therefore lubricating oil on joint face 849 is moved as shown in arrow R7
And moved towards taper surface 841.
Taper surface 841 increases with close to wick 101 from the distance of shaft core J, and inclining for upward slope is turned into towards wick 101
Inclined-plane.Therefore, the lubricating oil on taper surface 841 by centrifugal force, from direction under the increased diagram of distance of shaft core J move by direction
It is dynamic.The lubricating oil for reaching the lower end of taper surface 841 concentrates on the front end of jut 841b by centrifugal force, such as arrow R8,
Dispersed towards foreign steamer direction.The lubricating oil for dispersing is back to wick 101 such as arrow R9 via dome-like roof 104.
So, the lubricating oil for being dispersed from the plane of rotation 82a of lubrication groove 82 is caught by inclined plane 848a, inclined plane 848b.Especially
If the lubricating oil for being directed towards dispersing in arrow R5 directions is not installing top retainer 84b, situation about not caught by inclined plane 848b
Under, the possibility for reaching foreign steamer 81 and being attached to herein is high.In this case, lubricating oil at the plane of rotation 81a of foreign steamer 81 can be produced
Become superfluous, and stir resistance and increase this problem.
In the case of present embodiment, the lubricating oil caught by inclined plane 848b is connected to taper via joint face 849
Face 841, therefore the lubricating oil of inclined plane 848b is attached to by centrifugal force, with " inclined plane 848b → 849 → taper surface of joint face
The mode of 841 → jut 841b → dome-like roof 104 " is moved.As a result, making towards R5 side using the surface of retainer 84
Wick 101 is back to the lubricating oil for dispersing.So, in present embodiment, it is prevented from what is caused by the lubricating oil for dispersing
The lubricating oil of plane of rotation 81a is superfluous.
In addition, in present embodiment, by two parts (lower retainer 84a and top retainer 84b) split up and down
Constitute retainer 84.In general, in the case of deep groove ball bearing, can by being set to segmenting structure as mode as described and
Assembling.Certainly retainer 84 is also may be integrally formed, especially in the case of the ball bearing of angular contact type, even if being integrated
Type, also can easily assemble.
And, as shown in figure 15 as, bag 840 turn into retainer 84 axial direction on the upside of a part open through hole
In the case of, also can similarly apply.That is, on the inner peripheral surface of retainer 84, inclined plane 848a, 848b is formed.In taper surface
841 end portion is formed with jut 841b.In addition, the joint face 850 for being formed at the upper end of retainer 84 is plane, because
This joint face 850 turns into the shape of sharp with the coupling part of taper surface 841 and inclined plane 848b.So, if there is sharp
Part, then lubricating oil is easily concentrated, and is easily dispersed from there.It is therefore preferable that to be set to the joint face shown in 2 chain lines
The face shape bent as 849, and smoothly joint face 849 is connected with taper surface 841 and inclined plane 848b.In addition, in the figure,
Represented with Round Wheel with the joint face 849 shown in 2 chain lines, but be alternatively the shape of the opening portion of residual bag 840.With it is logical
The partial response ground that the oil that disperses of opening portion cannot catch is crossed, effect reduces, even if so can also expect making to a certain degree
The effect that the oil that disperses is returned.
(variation)
Figure 16 is the figure of the variation for representing the 2nd implementation method.In the 2nd implementation method, in the outer of retainer 84
Taper surface 841 is formed on side face, inclined plane 848a, 848b is formed on inner peripheral surface, and formed taper surface 841 and inclined plane
The joint face 849 of 848b connections.In variation shown in Figure 16, and then jut is formed on the taper surface 841 of outer circumferential side
851.Jut 851 is in crest ground in the direction of the end (being formed with the end of projection) from the lateral side of wick 101 of joint face 849
Extend and formed.
In the case of the jut 851 shown in Figure 16, formed from joint face 849 to jut 841b, but
Axial length can be made shorter.And, jut 851 turns into the convex of the top of the sharp that there are two inclined-planes 851a, 851b to intersect
Shape, but it is alternatively the convex form with gentle top.
Such as the dotted arrow R10 of Figure 16, periphery is moved to via joint face 849 from the inclined plane 848b of inner peripheral surface side
Inclined-plane 851a movement of the lubricating oil of surface side from joint face 849 towards jut 851.Because, compared with taper surface 841,
Jut 851 is from the big therefore bigger centrifugal action of the distance of shaft core J in lubricating oil.Lubricating oil on inclined-plane 851a passes through
Centrifugal force and close to the top of jut 851 and towards jut 841b direction move.Also, eventually from jut 841b
Dispersed towards foreign steamer direction.
Therefore, the lubricating oil of periphery surface side is moved to from the inner peripheral surface side of retainer 84 to be again attached in bag 840
The probability of rotor (not shown) is small, and major part is dispersed by jut 851 towards foreign steamer direction, such as the arrow R9 of Figure 14
As, it is back to wick 101.So, by setting jut 851, the lubrication of periphery surface side is directed to by inclined plane 848b
Oil will not accumulate plane of rotation 81a of the stream in foreign steamer 81, but effectively be back to wick 101.Even if in addition, in the guarantor shown in Figure 15
In the case of holder shape, by setting jut 851 on the taper surface 841 of outer circumferential side, it is also possible to play same effect.
As described above, in the 2nd implementation method, as shown in figure 14 as, from the plane of rotation 82a of lubrication groove 82 towards arrow R5 directions
The lubricating oil for dispersing is attached to the inclined plane 848b being formed on retainer inner peripheral surface.Inclined plane 848b turns into away from conduct
The wick 101 of lubricating oil storage unit, from the inclined plane of the increased descending of the distance of shaft core J, therefore in the way of away from wick 101
Moved towards joint face 849.It is formed at wick 101 as the joint face 849 of the retainer end of opposition side will be formed in keeping
The taper surface 841 of device outer peripheral face is connected with inclined plane 848b, therefore the lubricating oil moved towards the direction of joint face 849 passes through connection
Face 849 and moved towards taper surface 841.Taper surface 841 turns into close to wick 101, from the increased upward slope of the distance of shaft core
Inclined plane, thus move to the lubricating oil of taper surface 841 and moved towards the direction of wick 101 on taper surface 841, and from taper
The wick side end (end on the downside of axially) in face 841 disperses.
So, dispersed from the plane of rotation 82a of lubrication groove 82 and be attached to the lubricating oil of inclined plane 848b from the cone of periphery surface side
The wick side end in shape face 841 disperses, therefore, it is possible to prevent the lubricating oil of plane of rotation 81a of foreign steamer 81 from becoming superfluous.
And then, as shown in figure 16 as, be formed through on taper surface 841 between adjacent a pair of bags 840 and from even
The jut 851 that the side of junction 849 extends towards the direction of wick 101 in crest.As a result, from the inclined plane of inner peripheral surface side
The lubricating oil that 848b is moved to taper surface 841 is moved by centrifugal force towards the direction of jut 851, and along jut 851
Mountain peak towards wick side end move.Therefore, it is possible to suppress the foreign steamer that lubricating oil enters to bag 840 from taper surface 841
Side opening.
And then, Tu16Zhong, bag 840 is passed through to the foreign steamer side opening of periphery seal from the lubrication groove side opening of periphery seal
Wear, therefore, as shown in figure 15 as, the bag opened with the upside of bag 840 (being opposition side with the side of wick 101 is configured with)
840 situation is compared, and the intensity of retainer is improved.And, if the upside of bag 840 is opened as shown in figure 15, have disperse to
The lubricating oil of the part is accessible to this shortcoming of foreign steamer side, but as shown in figure 16 as close in the case of, be prevented from described
Towards dispersing for foreign steamer side.Bag 840 is without all of bag 840 from the lubrication groove side opening of periphery seal to periphery seal
Foreign steamer side opening runs through, and can be opened on the upside of the bag 840 of a part.The open number of bag 840 according to the intensity of retainer with
The dispersing of lubricating oil prevents from effect to select.
Various implementation methods and variation are illustrated above, but the present invention is not limited to these contents.Example
Such as, in the implementation method, it is illustrated by taking turbomolecular pump as an example, but is not limited to turbomolecular pump, the present invention can
The oil-lubricated bearing device of various vavuum pumps is applied to, and then, the present invention can also apply to the oil of the device beyond vavuum pump
Lubrication bearing arrangement.Other forms expected in the range of technological thought of the invention are also contained in the scope of the present invention.
Claims (10)
1. a kind of oil-lubricated bearing device, it is characterised in that including：
Rolling bearing, the retainer with lubrication groove, foreign steamer, rotor and the interval for maintaining the rotor, and support rotation
Axle；
Cone-shaped component, located at being fixed with the rotary shaft of the lubrication groove, it is the 1st for going up a slope to be formed with towards the lubrication groove
Inclined plane；
Lubricating oil storage unit, configures and is being provided with the side of the cone-shaped component relative to the lubrication groove；And
The lubricating oil of the lubricating oil storage unit is supplied to the described 1st and inclined by contact site, contact to the 1st inclined plane
Face,
The retainer includes：
Bag, with foreign steamer side opening and lubrication groove side opening, keeps the rotor；
Lubricating oil scraping portion, is formed at the inner peripheral surface of the bag, and scraping is attached to the lubricating oil on the rotor surface；And
2nd inclined plane, is formed in the retainer outer peripheral face abutted with the foreign steamer side opening, towards the lubricating oil storage unit
To go up a slope.
2. oil-lubricated bearing device according to claim 1, it is characterised in that
The lubricating oil scraping portion possesses multiple convex portions, and the multiple convex portion is in the foreign steamer side opening side of the inner peripheral surface
Region in formed in the way of arranging in the circumferential direction.
3. oil-lubricated bearing device according to claim 1, it is characterised in that
In the 2nd inclined plane, the projection protruded from the 2nd inclined plane is formed with.
4. oil-lubricated bearing device according to claim 1, it is characterised in that
The cone-shaped component is detachably, located at the rotary shaft, the lubrication groove to be fixed on the lubrication groove of the rotary shaft
Fixing component.
5. oil-lubricated bearing device according to claim 1, it is characterised in that including：
Lubricating oil guide portion, the retainer and be configured at foreign steamer side, with the lubricating oil storage unit and the foreign steamer phase
Contact, the lubricating oil dispersed from the 2nd inclined plane is guided to the lubricating oil storage unit.
6. a kind of oil-lubricated bearing device, it is characterised in that including：
Rolling bearing, the retainer with lubrication groove, foreign steamer, rotor and the interval for maintaining the rotor, and support rotation
Axle；
Cone-shaped component, located at being fixed with the rotary shaft of the lubrication groove, it is the 1st for going up a slope to be formed with towards the lubrication groove
Inclined plane；
Lubricating oil storage unit, configures and is being provided with the side of the cone-shaped component relative to the lubrication groove；And
The lubricating oil of the lubricating oil storage unit is supplied to the described 1st and inclined by contact site, contact to the 1st inclined plane
Face,
The retainer includes：
Bag, retainer outer peripheral face is through to from retainer inner peripheral surface, keeps the rotor；
2nd inclined plane, is formed at the retainer outer peripheral face, with close to the lubricating oil storage unit, increases from the distance of shaft core
Plus and to go up a slope；
3rd inclined plane, is formed at the retainer inner peripheral surface, with away from the lubricating oil storage unit, increases from the distance of shaft core
Plus and be descending；And
Joint face, forms and the lubricating oil storage unit is the retainer end of opposition side, by the 2nd inclined plane and described the
3 inclined planes are connected.
7. oil-lubricated bearing device according to claim 6, it is characterised in that
In the 2nd inclined plane, it is formed through between bag described in adjacent a pair and from the side court of the joint face
To the jut that the direction of the lubricating oil storage unit extends in crest.
8. the oil-lubricated bearing device according to claim 6 or 7, it is characterised in that
At least one position of the bag is run through from the lubrication groove side opening of periphery seal to the foreign steamer side opening of periphery seal.
9. oil-lubricated bearing device according to claim 8, it is characterised in that
The retainer is that the engagement of more than two components is formed into integration.
10. a kind of vavuum pump, it is characterised in that including：
Oil-lubricated bearing device according to any one of claim 1 to 9；And
Impeller of pump, is arranged in the rotary shaft.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-202379 | 2015-10-13 | ||
| JP2015202379 | 2015-10-13 | ||
| JP2016-147412 | 2016-07-27 | ||
| JP2016147412A JP6623964B2 (en) | 2015-10-13 | 2016-07-27 | Oil lubricated bearing device and vacuum pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106917772A true CN106917772A (en) | 2017-07-04 |
| CN106917772B CN106917772B (en) | 2019-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610855037.1A Active CN106917772B (en) | 2015-10-13 | 2016-09-27 | Oil-lubricated bearing device and vacuum pump |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6623964B2 (en) |
| CN (1) | CN106917772B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6988586B2 (en) * | 2018-03-07 | 2022-01-05 | 株式会社島津製作所 | Vacuum pump |
| EP3575610B1 (en) * | 2018-05-30 | 2022-01-19 | Pfeiffer Vacuum Gmbh | Vacuum pump with lubricant reservoir |
| GB2575473B (en) * | 2018-07-11 | 2021-07-28 | Edwards Ltd | Bearing cage |
| GB2584076B (en) * | 2019-05-03 | 2022-04-20 | Edwards Ltd | Lubricant supply system and vacuum pump |
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| DE102007014142B4 (en) * | 2007-03-23 | 2019-05-29 | Pfeiffer Vacuum Gmbh | vacuum pump |
| JP5343457B2 (en) * | 2008-09-02 | 2013-11-13 | 株式会社ジェイテクト | Roller bearing cage |
| JP2012102760A (en) * | 2010-11-08 | 2012-05-31 | Nsk Ltd | Bearing cage |
| JP2012107674A (en) * | 2010-11-16 | 2012-06-07 | Ntn Corp | Ball bearing |
| GB2562493B (en) * | 2017-05-16 | 2020-12-30 | Edwards Ltd | Pump bearing lubrication |
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| JP2005003145A (en) * | 2003-06-13 | 2005-01-06 | Nsk Ltd | Retainer for rolling bearing and rolling bearing |
| US20070292064A1 (en) * | 2006-06-20 | 2007-12-20 | Jtekt Corporation | Rolling bearing and cage for rolling bearing |
| EP1921322A2 (en) * | 2006-11-11 | 2008-05-14 | Pfeiffer Vacuum GmbH | Bearing module for a vacuum pump |
| CN103180626A (en) * | 2010-10-19 | 2013-06-26 | Ntn株式会社 | Roller bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106917772B (en) | 2019-02-19 |
| JP6623964B2 (en) | 2019-12-25 |
| JP2017075695A (en) | 2017-04-20 |
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