CN207246232U - Hub unit bearing - Google Patents
Hub unit bearing Download PDFInfo
- Publication number
- CN207246232U CN207246232U CN201721142124.9U CN201721142124U CN207246232U CN 207246232 U CN207246232 U CN 207246232U CN 201721142124 U CN201721142124 U CN 201721142124U CN 207246232 U CN207246232 U CN 207246232U
- Authority
- CN
- China
- Prior art keywords
- outer ring
- raceway
- unit bearing
- hub unit
- ring raceway
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
It the utility model is related to the hub unit bearing in order to which the wheel of automobile is rotatably supported and used relative to draft hitch.Hub unit bearing is more than the pitch diameter that the raceway of axially inner side arranges on the center section of the outer ring raceway of multiple row on the outer circumferential surface of outer ring, relative to axial direction formed with mounting flange, the pitch diameter of axially external raceway row.On the inner peripheral surface of outer ring, formed with continuous integral hardened layer on the part of each outer ring raceway and the center section of each outer ring raceway, that is, outer ring rake.According to this structure, the center section of the outer ring raceway of multiple row is arranged in mounting flange and using in the hub unit bearing of reducing PCD structures, it is ensured that the intensity of outer ring.
Description
Technical field
It the utility model is related to the wheel in order to which the wheel of automobile is rotatably supported and used relative to draft hitch
Hub unit bearing.
Background technology
Hub unit bearing rotatably supports the wheel of automobile and braking with rotary part relative to draft hitch.
Due to being applied with high-torque load when driving in automobile turning, thus control stability during in order to ensure turning driving, it is necessary to
The torque rigidity of hub unit bearing is set to very big.For this reason, as hub unit bearing, usually using configuration multiple row rolling element
(ball) and the construction that the contact angle of precompressed and the back side combined (DB types) is assigned to each row rolling element.It is moreover, big in order to prevent
Type and the torque rigidity for ensuring bigger, it is known that pitch diameter that is such described in such as patent document 1, making each row rolling element
Different construction (reducing PCD (Pitch Circle Diameter：Pitch diameter) construction).
The hub unit bearing used in the front-wheel of FF (front-wheel drive) car since dual-purpose is driving wheel and deflecting roller, so
It is fixedly connected with CVJ (Constant Velocity Joint：Constant velocity cardan joint) drive shaft, the steering mechanism such as knuckle.For
Make the oscillation center of CVJ close to imaginary stub (king pin) angle of draft hitch, and need to reduce hub unit bearing
Axial dimension, and increase the hub unit bearing axial width dimension chimeric with knuckle.Therefore, the wheel hub of fixing vehicle wheel etc.
The distance between flange and the mounting flange for being fixed on hub unit bearing on the knuckle of draft hitch (flange spacing
From) shorten, mounting flange is formed at the axially intermediate portion (center section respectively arranged) of outer ring.In addition, in hub unit bearing
Axial dimension be restricted, the axial dimension between multiple row rolling element can not be become larger in the case of, as needing high-torque firm
Property front-wheel drive hub unit bearing, be considered as reducing PCD construction.
But according to said structure, then the backoff portion for being formed at the root of mounting flange is nearly formed in major diameter side
Raceway arranges the rake between the raceway of path side row, causes the center section of each outer ring raceway to become thin-walled state.Moreover,
Also likely to be present above-mentioned backoff portion approach or coincide with to rolling element assign contact angle extended line on situation.
When having road surface reaction when driving to the effect of such hub unit bearing, stress concentration is in above-mentioned thinner wall section
Point.If being become larger based on the stress that road surface reaction produces, worry can carry out harmful effect to the intensity band of outer ring (mounting flange).
Prior art literature
Patent document
Patent document 1：Special open 2008-045674 Japanese Laid Open Patents
Utility model content
The utility model is put and is made to solve the above-mentioned problems, its problem is, is arranged in mounting flange each outer
Enclose the center section of raceway and enter the hub unit of the different reducing PCD structures of PCD of the rolling element of each raceway row using group
In bearing, it is ensured that the intensity of outer ring.
In order to solve the above problems, the utility model provides a kind of hub unit bearing, possesses：Outer ring, it is in inner peripheral surface
The upper outer ring raceway with multiple row, and there is mounting flange on outer circumferential surface；Wheel hub, it has the inner ring of multiple row on outer circumferential surface
Raceway and the hub flange for supporting and fixing wheel；And ball, it is between each outer ring raceway and each inner ring raceway, by each
Row be respectively equipped with it is multiple, and with have been assigned the state of the combined contact angle in the back side setting, the axis of the hub unit bearing
The pitch diameter of raceway row laterally is more than the pitch diameter that the raceway of axially inner side arranges, and the feature of the hub unit bearing exists
In,
Mounting flange is relative to the center section for being axially formed in each outer ring raceway, on the inner peripheral surface of outer ring, each outer
Raceway part and the center section of each outer ring raceway are enclosed, formed with continuous integral hardened layer.
And, it is characterised in that the diameter of the ball arranged arranged on axially external raceway is more than the rolling arranged on axially inner side
The diameter of the ball of road row.
And, it is characterised in that the cross sectional shape of the center section of each outer ring raceway is smoothly continuous shape.
Utility model effect
According to the utility model, it is arranged on the center section of each outer ring raceway in mounting flange and each raceway is entered using group
In the hub unit bearing of reducing PCD the structures different PCD of the rolling element of row, it can be ensured that the intensity of outer ring.
Brief description of the drawings
Fig. 1 is the sectional view of the hub unit bearing for the embodiment for representing the utility model.
Embodiment
Fig. 1 shows the embodiment of the utility model.The hub unit bearing 1 of present embodiment possess wheel hub 2, outer ring 3,
Respectively multiple ball 4a, 4b of rolling element.Wheel hub 2 is in the axial pars intermedia of outer circumferential surface and inside portion formed with multiple row (2 row)
Inner ring raceway 7a, 7b, outer circumferential surface axially outer portion formed with hub flange 8.
In addition, it is so-called relative to axial outside, in the state of automobile is assembled in, refer to outside the width of vehicle
Side, is the left side of Fig. 1.On the contrary, it will be known as the right side of Fig. 1 of the width center side of vehicle relative in axial direction
Side.
The diameter for being formed at the inner ring raceway 7a in axially external outside is more than the inner ring for the inner side for being formed at axially inner side
The diameter of raceway 7b.In hub flange 8, the base end part of fixed more studs 12, car is formed so as to supporting and fixing
The braking rotary bodies such as the wheel rim (wheel) of wheel, brake disc.The hub unit bearing 1 of the present embodiment of driving wheel has
For combining the splined hole 11 of fixed drive shaft (not shown) in the state of the center axially through wheel hub 2.
Hub body 5 and inner ring 6 are combined and formed by wheel hub 2.On the outer circumferential surface of hub body 5, in axial direction
Between inner ring raceway 7a of the portion formed with outside, in axial inner end formed with path layers of difference portion 9.Inner ring 6 is formed on outer circumferential surface
There is the inner ring raceway 7b of inner side, and outer be fixed on path layers of difference portion 9.By the way that the wheel hub rake 10 for being used as inclined plane is located at
The inner ring raceway 7a in outside and the center section of path layers of difference portion 9, the footpath that may be allowed each inner ring raceway 7a, 7b are poor.Each inner ring rolling
The cross sectional shape (shape of generatrix) of road 7a, 7b are arc-shaped, and mutually closer to (more towards the axial center of wheel hub 2), then outside diameter is got over
It is small.
Outer ring raceway 13a, the 13b of outer ring 3 formed with multiple row (2 row) on inner peripheral surface.It is formed at axially external outside
Outer ring raceway 13a diameter be more than be formed at axially inner side inner side outer ring raceway 13b diameter.For this reason, in outer ring 3
On inner peripheral surface, in the center section of each outer ring raceway 13a, 13b, formed with along more towards the axially inner side then smaller direction of internal diameter
Inclined outer ring rake 15.The cross sectional shape (shape of generatrix) of each outer ring raceway 13a, 13b are more close to each other to be arc-shaped
(more towards the axial center of outer ring 3) then internal diameter is smaller.
Rolled respectively between each ball 4a inner ring raceway 7a on the outside and the outer ring raceway 13a in outside be equipped with freely it is more
It is a, constitute axially external raceway row.On the other hand, each ball 4b is in the inner ring raceway 7b of inner side and the outer ring raceway of inner side
Rolled respectively between 13b freely be equipped with it is multiple, constitute axially inner side raceway row.The rolling arranged arranged on axially external raceway
The diameter of pearl 4a is more than the diameter of the ball 4b arranged arranged on the raceway of axially inner side.Each ball 4a's of axially external raceway row
The pitch diameter for each ball 4b that the raceway that pitch diameter is more than axially inner side arranges.
Such hub unit bearing 1 imparts each ball 4a, 4b for being configured to multiple row at the back side combined (DB types)
Contact angle (chain-dotted line Co, Ci).Moreover, CVJ and bonded block (not shown) (nut etc.) by being interspersed in splined hole 11, folder
The axially external face of hub body 5 and the axially inner side face of inner ring 6 are held, each ball 4a, the 4b for being configured to multiple row are imparted pre-
Pressure.According to this bearing arrangement, the raising of control stability when hub unit bearing 1 realizes torque rigidity and turning driving.
In the center section of the inner peripheral surface of outer circumferential surface and the outer ring 3 of wheel hub 2, the axis in the space of each ball 4a, 4b is provided with
Sealed respectively by sealing device 21a, 21b to both ends open portion.
The knuckle 30 for forming draft hitch is fixed in outer ring 3, and when use does not rotate.Outer ring 3 on outer circumferential surface formed with
Mounting flange 14, in axial inner end formed with knuckle guide portion 20.Knuckle guide portion 20 is being inserted in knuckle 30
Mounting hole and make mounting flange 14 knuckle mounting surface (axially inner side face) abutted with knuckle 30 in the state of, pass through
The bolt (not shown) screwed togather with mounting hole 19, by 3 supporting and fixing of outer ring in knuckle 30.The axially inner side face of mounting flange 14
For the plane of the Round Wheel of the orthogonality of center shaft with outer ring 3.The outer circumferential surface of knuckle guide portion 20 is same with the central shaft of outer ring 3
The barrel surface of the heart.
Mounting flange 14 is protruding outside to be radially oriented in the center section of each outer ring raceway 13a, 13b relative to axial direction
State formed.Center (the center line of the outer ring raceway 13a in the axially external face of mounting flange 14 and the outside of circular shape
Lo) compare and be located at axially inner side.The outer ring in the axially inner side face (knuckle mounting surface) of mounting flange 14 and the inner side of arc-shaped
The center (center line Li) of raceway 13b is compared to axially external.
In the part that mounting flange 14 and knuckle guide portion 20 connect, (footpath in the axially inner side face of mounting flange 14 is inside
The axial outer end portion of the outer circumferential surface of end and knuckle guide portion 20) on, formed with as to footpath in the range of the complete cycle of outer ring 3
Inwardly and the axially external backoff portion 18 of groove formed that is recessed.Backoff portion 18 is to be used to accurately process above-mentioned knuckle
Mounting surface and the outer circumferential surface of knuckle guide portion 20 and set.
Contact angle (the chain-dotted line Ci and center line Li for the ball 4b that backoff portion 18 is arranged relative to the raceway for forming axially inner side
Angulation), positioned at ± 15 degree of scopes (positioned at chain-dotted line Ci extended line on, in the range of ± 15 degree).In addition, move back
Keep away the chain-dotted line Ci of contact angle and the outer ring raceway of inner side of the portion 18 positioned at the ball 4b for the raceway row for representing to form axially inner side
The radial outside of intersection point P between the inner peripheral surface of 13b (intersection point P is diametrically overlapped with backoff portion 18).
Outer ring rake 15 has smooth shape of the section in substantially S fonts.The axial outer end portion of outer ring rake 15
Divide and be formed as cylindric, it is continuous with the axial inner end of the outer ring raceway 13a in outside.The axial inner ends part of outer ring rake 15
Be formed as cylindric, it is continuous with the axial outer end portion of the outer ring raceway 13b of inner side.It is formed at the axial both ends of outer ring rake 15
Be formed as between the above-mentioned two cylindrical portion in portion along more towards axially inner side, then the smaller direction of internal diameter is inclined smooth
Inclined plane type.In addition, above-mentioned two cylindrical portion and above-mentioned inclined plane type part are smoothly continuous.
Outer ring 3 is carbon steel, on outer ring raceway 13a, 13b and outer ring rake 15 of multiple row, in the range of complete cycle
It is integrally formed with the hardened layer 16 (parts of oblique lattice) based on heat treatment.Hardened layer 16 is by using high frequency heating coil pair
What each outer ring raceway 13a, 13b and outer ring rake 15 were carried out at the same time the high frequency heat treatment of heating and were formed.Therefore, in hardened layer
On 16 peripheral part (center section of hardened layer 16 and the outer circumferential surface of outer ring 3), there is the non-hardening for not implementing heat treatment
Portion 17.
The contact angle (chain-dotted line Co and chain-dotted line Ci) of each outer ring raceway 13a, 13b are being present in the footpath of outer ring rake 15
The internal chiasma in the non-hardening portion 17 of part laterally.
In the present embodiment, hardened layer 16 is made by the hardened layer phase of each outer ring raceway 13a, 13b and outer ring rake 15
Connect (continuous) and be integrally formed, and outer ring rake 15 is formed as smoothly continuous cross sectional shape.According to this structure,
The contact stress of the ball 4b at intersection point P is disperseed by hardened layer 16 and the entirety to outer ring 3, prevent the radial direction of backoff portion 18
The stress of inboard portion rises.Moreover, stress will not concentrate on the privileged site for the outer ring rake 15 being smoothly formed.It is tied
Fruit is, it is suppressed that intensity decreases, the torque of hub unit bearing 1 of mounting flange 14 caused by stress is concentrated to outer ring 3
The harmful effects such as rigidity reduction.
As long as the utility model mounting flange is located at the center section of each outer ring raceway and using the wheel of reducing PCD structures
Hub unit bearing, the then hub unit bearing for the structure that can be also suitable for beyond present embodiment.
Claims (3)
1. a kind of hub unit bearing, possesses：
Outer ring, it has the outer ring raceway of multiple row on inner peripheral surface, and has mounting flange on outer circumferential surface；
Wheel hub, its inner ring raceway on outer circumferential surface with multiple row and the hub flange for supporting and fixing wheel；And
Ball, its between each outer ring raceway and each inner ring raceway, be respectively equipped with by each row it is multiple, and to be endowed
The state of the back side combined contact angle is set,
The pitch circle that the raceway that the pitch diameter of the axially external raceway row of the hub unit bearing is more than axially inner side arranges is straight
Footpath,
The hub unit bearing is characterized in that,
The mounting flange relative to the center section for being axially formed in each outer ring raceway,
On the inner peripheral surface of the outer ring, the shape on the part of each outer ring raceway and the center section of each outer ring raceway
Into the hardened layer for having continuous one.
2. hub unit bearing as claimed in claim 1, it is characterised in that
The diameter of the ball arranged arranged on axially external raceway is more than the ball of the raceway row arranged on axially inner side
Diameter.
3. hub unit bearing as claimed in claim 1, it is characterised in that
The cross sectional shape of the center section of each outer ring raceway is smoothly continuous shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016181622A JP2018044651A (en) | 2016-09-16 | 2016-09-16 | Hub unit bearing |
| JP2016-181622 | 2016-09-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207246232U true CN207246232U (en) | 2018-04-17 |
Family
ID=61694583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721142124.9U Active CN207246232U (en) | 2016-09-16 | 2017-09-07 | Hub unit bearing |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2018044651A (en) |
| CN (1) | CN207246232U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112659812A (en) * | 2019-10-16 | 2021-04-16 | 日本精工株式会社 | Hub unit bearing with generator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7415449B2 (en) * | 2019-11-01 | 2024-01-17 | 株式会社ジェイテクト | bearing device |
-
2016
- 2016-09-16 JP JP2016181622A patent/JP2018044651A/en active Pending
-
2017
- 2017-09-07 CN CN201721142124.9U patent/CN207246232U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112659812A (en) * | 2019-10-16 | 2021-04-16 | 日本精工株式会社 | Hub unit bearing with generator |
| CN112659812B (en) * | 2019-10-16 | 2024-05-28 | 日本精工株式会社 | Hub unit bearing with generator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2018044651A (en) | 2018-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10414264B2 (en) | In-wheel motor drive device assembly having an in-wheel motor drive device and a suspension device | |
| US10377224B2 (en) | Coupling structure of in-wheel motor drive device and strut type suspension device | |
| CN101784398B (en) | Bearing device for wheel | |
| JP5556509B2 (en) | Hub unit for vehicles | |
| US20160075179A1 (en) | Axle Assembly With Inboard Axle Shaft Bearings That Support A Differential Mechanism | |
| CN207246232U (en) | Hub unit bearing | |
| US8714573B2 (en) | Vehicle bearing apparatus | |
| US20040127323A1 (en) | Differential drive with lightweight differential carrier | |
| CN108351012A (en) | Connection component and method for manufacturing connection component | |
| CN102259558B (en) | With the hub unit of dual row of rolling bodies | |
| JP2007069704A (en) | Bearing device for driving wheel | |
| KR101935417B1 (en) | Wheel hub and wheel bearing comprising same | |
| CN104875545A (en) | Assembled wheel connected by involute splines | |
| JP4877904B2 (en) | Drive wheel bearing device and axle module including the same | |
| CN207229605U (en) | Wheel support roller bearing unit | |
| CN209067659U (en) | Hub unit bearing | |
| US10525765B2 (en) | Combination structure of hub and spokes | |
| JP2003072308A (en) | Bearing system for driving wheel and its manufacturing method | |
| US10995841B2 (en) | Member joining structure for differential device | |
| JP2007062628A (en) | Supporting structure of suspension device | |
| JP4094468B2 (en) | Drive wheel bearing device and manufacturing method thereof | |
| JP4587205B2 (en) | Axle module | |
| JP2005335585A (en) | Axle module | |
| JP6187280B2 (en) | Differential gear device and manufacturing method thereof | |
| JP4715005B2 (en) | Rolling bearing unit for drive wheels |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |