CN202935090U - Rotary bearing device for wheel - Google Patents
Rotary bearing device for wheel Download PDFInfo
- Publication number
- CN202935090U CN202935090U CN 201220336845 CN201220336845U CN202935090U CN 202935090 U CN202935090 U CN 202935090U CN 201220336845 CN201220336845 CN 201220336845 CN 201220336845 U CN201220336845 U CN 201220336845U CN 202935090 U CN202935090 U CN 202935090U
- Authority
- CN
- China
- Prior art keywords
- axial
- cylindrical portion
- outer ring
- ring
- diameter cylindrical
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/80—Labyrinth sealings
- F16C33/805—Labyrinth sealings in addition to other sealings, e.g. dirt guards to protect sealings with sealing lips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
- F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
- F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
- F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
- F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/02—Wheel hubs or castors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model provides a rotary bearing device for a wheel. The rotary bearing device can achieve light weight while ensuring durability. A cover (29) is formed by an inner diameter lateral cylinder portion (30), a circular ring portion (31) and an outer diameter lateral cylinder portion (32). The inner diameter lateral cylinder portion (30) is embedded and fixed on an inner ring (12a) of a hub (4a). A labyrinth type sealing part (39) is arranged between the inner peripheral face of the outer diameter lateral cylinder portion (32) and the outer peripheral face of a small diameter portion (37) of an outer ring (2a). Labyrinth type sealing parts (41) are arranged in a space between the inner peripheral face of a central hole (27a) of a steering knuckle (8a) and the outer peripheral face of the outer diameter lateral cylinder portion (32) and a space between of the top end edge of the outer diameter lateral cylinder portion (32) and the portion in the outer ring (2a) opposite to the top end edge of the outer diameter lateral cylinder portion (32). A labyrinth type sealing part (38) is arranged between the axial outer lateral face of an outer diameter circular ring portion (35) of the circular ring portion (31) of the cover (29) and the axial inner end face of the outer ring (2a).
Description
Technical field
The utility model relates to for rotation of wheel being supported on freely the wheel supporting device for sluing mechanisms of draft hitch, more specifically, relate to the wheel support that is used for supporting wheel by combination with roller bearing unit and consist of the wheel supporting device for sluing mechanisms that the steering swivel of a part of the independent suspension formula draft hitch of automobile consists of.
Background technology
For rotation of wheel is supported on draft hitch freely, used the wheel support roller bearing unit that the suitable parts in outer ring parts suitable for inner ring is made up freely via the rolling body rotation and consist of.In the situation that rotation of wheel is supported on independent suspension formula draft hitch as a kind of draft hitch freely, be embedded in the upper centre hole that arranges of the steering swivel (knuckle) of a part that consists of this independent suspension formula draft hitch consisting of a part, the nothing of wheel support with the suitable parts in outer ring of bearing unit with rocking, and, by a plurality of bolts in conjunction with the fixedly suitable parts in outer ring and steering swivel.Be used widely with supporting device for sluing mechanisms with the wheel that roller bearing unit and steering swivel consist of by making up such wheel support in the past.Fig. 7 as an example of structure in the past, wheel that TOHKEMY 2010-230080 communique puts down in writing is shown with the structure of supporting device for sluing mechanisms.
The formation wheel possesses with roller bearing unit 1 with the wheel support of supporting device for sluing mechanisms: as the outer ring 2 of the suitable parts in outer ring; Be configured in the internal side diameter of outer ring 2 and as the wheel hub 4 of the suitable parts of inner ring; With a plurality of balls 5 as rolling body.Wheel hub 4 via a plurality of ball 5 swivel bearings in the outer ring 2 internal side diameter.Wherein, outer ring 2 has multiple row outer race track 6 at inner peripheral surface, has Stationary side flange 7 at outer peripheral face.Due to the Stationary side flange 7 of outer ring 2 by many bolts (omitting diagram) in conjunction with being fixed in the steering swivel 8 that consists of draft hitch, therefore, during use, outer ring 2 does not rotate.On the other hand, wheel hub 4 has multiple row inner race track 9 and rotation side flange 10 at outer peripheral face, during use, and rotates together with swivel in conjunction with brakings such as the wheel that is fixed in rotation side flange 10, discal rotors.As a plurality of balls 5 of rolling body respectively by retainer 16 with every row a plurality of modes is set, between the multiple row inner race track of roll the multiple row outer race track 6 that remains on freely outer ring 2 and wheel hub 4.
Wheel hub 4 consists of by hub body 11 with in conjunction with the inner ring 12 that is fixed in this hub body 11.On hub body 11, be formed with rotation side flange 10 at the outer peripheral face by the axial outer end part, directly be formed with the inner race track 9 in the axial outside at axial pars intermedia.In addition, in the axial outer end section of hub body 11, be provided with for outer embedding location wheel and brake with cylindrical portion 13 swivel, that be called as guide portion.In addition, in this specification sheets, refer to be the left side of Fig. 1 ~ Fig. 7 in the side that is assembled in outside the Width that becomes vehicle body under the state of draft hitch about axially " outward ".On the contrary, will become the Width center side, right side Fig. 1 ~ Fig. 7 of vehicle body about axially being called " interior ".
Stop up the axial both ends open that rolling body between the outer peripheral face of the inner peripheral surface be present in outer ring 2 and wheel hub 4, that be provided with a plurality of balls 5 arranges space 17 with seal ring 18a, 18b.In addition, in order to cover inner ring 12 and caulking part 15 from space outerpace, with the outer inner end that is embedded in inner ring 12 of cover 19.The cover 19 cover main bodys 20 by the cap shape that the end is arranged, fixing consist of with cylindrical portion 21 and outside diameter annulus section 22.Fix with cylindrical portion 21 and consist of in the mode that the radial outer end from cover main body 20 at right angles bends towards the axial outside and then 180 degree turn back.In addition, outside diameter annulus section 22 with from fixing with the end of cylindrical portion 21, consist of with the end of the opposition side of the end of the cover main body 20 continuous sides mode towards the radial outside extension.Cover 19 will be fixed with the outer end that is embedded in inner ring 12 of cylindrical portion 21 in the mode of interference fit, and be fixed on the inner end of inner ring 12.
In addition, the part from axial pars intermedia to axial outer end section in the inner peripheral surface of the centre hole 27 of steering swivel 8 is embedded in the outer peripheral face with this part outer ring 2 in opposite directions outward.On the other hand, make the part from axial pars intermedia to axial inner ends section in the inner peripheral surface of centre hole 27 of steering swivel 8, with the outer peripheral edges of the outside diameter annulus section 22 of cover 19 near and in opposite directions, in this part, labyrinth 28 is set.
Like this, can prevent the foreign matters such as dust and weed-trifles, rainwater enter seal ring 18b around and be provided with the sensor setting space 26 of sensor 25, can seek to guarantee that wheel support is with the durability of roller bearing unit.But this is in the past in structure, the Stationary side flange 7 of outer ring 2 and cover between 19 outside diameter annulus section 22 axially on distance large.Therefore, in order to consist of labyrinth 28, need to increase steering swivel 8 axially on thickness, so the problem that exists wheel to increase with the weight of supporting device for sluing mechanisms.
In addition, when using wheel use supporting device for sluing mechanisms, consisting of between wheel the use wheel hub 4 and outer ring 2 and steering swivel 8 of supporting device for sluing mechanisms, applying the moment load that the variation with motoring conditions such as car speed, turning, pavement states changes.Based on this moment load, the outer ring 2 of the rotation wheel hub 4 of side and non-rotating side and steering swivel 8 by bearing center (be defined as comprising outer race track 6 and inner race track 9 axially on the intersection point of imaginary plane and the center shaft of wheel hub 4 and outer ring 2 of middle position) neighbouring centered by, swing displacement on the direction that makes inclined each other.
This is in the past in structure, between bearing center and labyrinth 28 axially on distance large.Therefore, based on swinging displacement, the gap of labyrinth 28 variation diametrically is large.Therefore, when labyrinth 28, gap under the initial setting state are set diametrically hour, there is following possibility: based on swinging displacement, consist of the inner peripheral surface butt of the centre hole 27 of the outer peripheral edges of outside diameter annulus section 22 of cover 19 of labyrinth 28 and steering swivel 8, rotational resistance increases, and perhaps reduces because friction causes covering 19 durability.
Patent documentation 1: TOHKEMY 2010-230080 communique
The utility model content
The utility model is In view of the foregoing made, its purpose is, use the wheel support of supporting device for sluing mechanisms with the structure of the cover of roller bearing unit and the position relationship of this cover and outer ring and steering swivel by the structure wheel, realize seeking the structure that the weight-saving wheel support is used roller bearing unit when can seeking to guarantee durability.
Wheel of the present utility model possesses with supporting device for sluing mechanisms: the steering swivel that consists of draft hitch; With the wheel support roller bearing unit that is used for rotation of wheel is supported on freely this steering swivel.
Described wheel support possesses the suitable parts in outer ring, the suitable parts of inner ring, cover and a plurality of rolling body with roller bearing unit.The suitable parts in described outer ring possess the multiple row outer race track that forms at inner peripheral surface and form at outer peripheral face the Stationary side flange that described steering swivel is fixed in also combination, and the suitable parts in described outer ring do not rotate yet in use.On the other hand, the suitable component configuration of described inner ring possesses in the inboard of the suitable parts in described outer ring the multiple row inner race track that forms at outer peripheral face.Described rolling body is arranged between described multiple row inner race track and described multiple row outer race track by row.
In addition, described cover is arranged between the axial inner ends opening and space outerpace that the rolling body that is provided with described rolling body arranges the space.This cover has: in the internal side diameter cylindrical portion that extends axially and be supported on the suitable parts of described inner ring; The annulus section of extending from the part of described internal side diameter cylindrical portion towards radial outside; The outside diameter cylindrical portion of extending towards the axial outside with radial outer end from described annulus section.
Described steering swivel possesses centre hole, described centre hole within it in the outer peripheral face of the suitable parts in the described outer ring of footpath side configuration, compare the outer peripheral face that described Stationary side flange is in axial inboard.
Wheel of the present utility model is with in supporting device for sluing mechanisms, described internal side diameter cylindrical portion supporting is being fixed under the state of the suitable parts of described inner ring, the outer peripheral face of the inner peripheral surface of the outside diameter cylindrical portion of described cover and these suitable parts in outer ring near and in opposite directions part, and, in the top edge parts suitable for described outer ring of the inner peripheral surface of the centre hole of described steering swivel and described at least outside diameter cylindrical portion and described top edge part in opposite directions between the space near and in opposite directions part, be respectively arranged with labyrinth.
Preferably, axial inner ends section in the outer peripheral face of the suitable parts in described outer ring, form the path stage portion recessed from this outer peripheral face to radially inner side at complete cycle, make the outer peripheral face of this path stage portion and described outside diameter cylindrical portion near and in opposite directions, forms the labyrinth of the close and part in opposite directions of the outer peripheral face of the suitable parts of inner peripheral surface and described outer ring of described outside diameter cylindrical portion.
In addition, wheel of the present utility model is with in supporting device for sluing mechanisms, preferably, the axial inner ends face that makes the suitable parts of at least a portion and described outer ring in the axial lateral surface of described annulus section near and in opposite directions, this near and in opposite directions part labyrinth also is set.
In this situation, preferably, the annulus section of described cover has: internal side diameter annulus section; With than the axial state in the outside outside diameter annulus section that arranges of this internal side diameter annulus section deflection; With make the continuous continuous stage portion of described internal side diameter annulus section and described outside diameter annulus section.And, by the axial periphery face of described outside diameter annulus section consist of with the axial inner ends face of the suitable parts in described outer ring near and the part of the axial lateral surface of in opposite directions described annulus section.In addition, the inner peripheral surface of described continuous stage portion is tilted along the direction that more becomes larger towards the axial outside, internal diameter, and, the inner peripheral surface of the outside diameter cylindrical portion of described cover is tilted along the direction that more becomes larger towards the axial outside, internal diameter.
In addition, the utility model also can be applicable to the wheel supporting device for sluing mechanisms of following structure: also possess: coder, itself and this suitable parts of inner ring are supported with one heart and are fixed on the suitable parts of described inner ring or are fixed on the parts of the suitable parts of this inner ring, and the axial medial surface of this coder becomes the detected face that magnetism characteristic in a circumferential direction alternately changes; And sensor, it has the axial medial surface test section in opposite directions across described cover and described coder.In this situation, described cover is made by non magnetic plate.
According to wheel supporting device for sluing mechanisms of the present utility model, realize guaranteeing to seek the weight-saving structure in the durability of wheel support with roller bearing unit can seek.That is, by between the cover parts suitable for the outer ring that rotate and steering swivel, labyrinth being set, thus, can prevent that foreign matter from entering rolling body the space is set, therefore can fully guarantee durability.In addition, due to the position that labyrinth is arranged in the axial direction near bearing center, therefore, even based on the torque load that wheel is applied with supporting device for sluing mechanisms, the suitable parts of inner ring parts suitable for the outer ring and steering swivel swing displacement, in this situation, also can reduce the variation of the diameter clearance of the labyrinth that produces based on this swing displacement.Therefore, can set the gap of labyrinth little under the initial setting state, can seek further to guarantee durability.
In addition, in the utility model, due to can reduce steering swivel axially on thickness, therefore, can realize that wheel support is with the lightweight of roller bearing unit.That is, can with in the top edge parts suitable for the outer ring of outside diameter cylindrical portion of cover and described top edge part in opposite directions between space (peristome) position configuration in the axial direction more near the position of Stationary side flange.The inner peripheral surface of the centre hole of steering swivel forms at least labyrinth, namely covers at least this part between above-mentioned inner peripheral surface and this part, thus, can fully obtain to guarantee the wheel support effect of the durability of roller bearing unit, therefore, can reduce this steering swivel axially on thickness.
In preferred configuration of the present utility model, the inner peripheral surface of the continuous stage portion of the inner peripheral surface of the outside diameter cylindrical portion that consists of cover and annulus section is tilted along the direction that more becomes larger towards the axial outside, internal diameter.This structure has following advantage: along with the foreign matters such as water that invade in cover move towards radial outside by centrifugal action, the inner peripheral surface guiding of the continuous stage portion of the inner peripheral surface of the outside diameter cylindrical portion that the foreign matters such as above-mentioned water are tilted and annulus section, thus be easy to discharge to space outerpace.
In addition, in the situation that form cover that the test section that makes sensor makes across non magnetic plate and the detection faces structure in opposite directions of coder, rotate together with cover parts suitable for inner ring, therefore, the foreign matters such as the small pieces of the ferromagnetism bodies such as iron plate, iron powder, powder are difficult to be attached to cover.Therefore, can guarantee the reliability that sensor detects.
Description of drawings
Fig. 1 illustrates the wheel of the 1st example of the utility model embodiment with the cutaway view of half structure of supporting device for sluing mechanisms.
Fig. 2 is the enlarged drawing of the A part of Fig. 1.
Fig. 3 illustrates the wheel of the 2nd example of the utility model embodiment with the cutaway view of half structure of supporting device for sluing mechanisms.
Fig. 4 is the enlarged drawing of the B part of Fig. 3.
Fig. 5 illustrates the wheel of the 3rd example of the utility model embodiment with the cutaway view of half structure of supporting device for sluing mechanisms.
Fig. 6 is the enlarged drawing of the C part of Fig. 5.
Fig. 7 illustrates the cutaway view of an example of the structure of wheel use supporting device for sluing mechanisms in the past.
Description of reference numerals
1,1a, 1b, 1c wheel support roller bearing unit
2,2a, 2b outer ring
4,4a, 4b wheel hub
5 balls
6 outer race tracks
7,7a, 7b Stationary side flange
8,8a, 8b steering swivel
9 inner race tracks
10 rotation side flanges
11,11a hub body
12,12a, 12b inner ring
13 cylindrical portion
14 path stage portion
15 caulking parts
16 retainers
17 rolling bodys arrange the space
18a, 18b seal ring
19 covers
20 cover main bodys
21 fixedly use cylindrical portion
22 outside diameter annulus sections
23 oils slinger
24 coders
25 sensors
26 sensor setting spaces
27,27a, 27b centre hole
28 labyrinths
29,29a, 29b cover
30,30a, 30b internal side diameter cylindrical portion
31,31a, 31b annulus section
32,32a, 32b outside diameter cylindrical portion
33,33a internal side diameter annulus section
34,34a stage portion
35,35a outside diameter annulus section
36,36a inner ring minor diameter part
37,37a outer ring minor diameter part
38,38a labyrinth
39,39a labyrinth
40,40a space
41,41a labyrinth
42 sensors
The specific embodiment
Fig. 1 and Fig. 2 illustrate the 1st example of the utility model embodiment.In addition, comprise the present embodiment, wheel of the present utility model is characterised in that following aspect with supporting device for sluing mechanisms: designed the formation wheel wheel support of the supporting device for sluing mechanisms structure of the cover 29 of roller bearing unit 1a, reached the position relationship between cover 29 and outer ring 2a and steering swivel 8a.In addition, the present embodiment illustrates the wheel support of using with drive wheel and has implemented situation of the present utility model with roller bearing unit 1a.The basic wheel with structure in the past of the structure of other parts and effect is much the same with supporting device for sluing mechanisms, therefore, the diagram and the explanation that repeat carried out omitting or simplifying, below, describe as main take the characteristic of the present embodiment.
The wheel that consists of the present embodiment with the wheel support of supporting device for sluing mechanisms with the cover 29 of roller bearing unit 1a by the metal sheet bending forming is obtained, consisted of by the internal side diameter cylindrical portion 30 of elongation in the axial direction, the annulus section 31 of extending diametrically and the outside diameter cylindrical portion 32 of extending in the axial direction.
Outside diameter cylindrical portion 32 forms in the mode from radial outer end lateral buckling outside axially of outside diameter annulus section 35.In addition, the inner peripheral surface of outside diameter cylindrical portion 32 forms the conical surface that tilts a little along the direction that more becomes larger towards the axial outside, internal diameter.On the other hand, the outer peripheral face of outside diameter cylindrical portion 32 does not tilt, and it is planar to form the fixing in the axial direction cylinder of external diameter.
The cover 29 that consists of like this due to the inner ring minor diameter part 36 that arranges from the axial pars intermedia of inner ring 12a to axial inner ends section, can rotate the outer build-in of internal side diameter cylindrical portion 30 together with wheel hub 4a.In addition, inner ring 12a consists of the wheel hub 4a as the suitable parts of inner ring together with hub body 11a.
In addition, make annulus section 31 outside diameter annulus section 35 axial lateral surface and as the axial inner ends face of the outer ring 2a of the suitable parts in outer ring near and in opposite directions, near and in opposite directions part form labyrinth 38.In addition, the structure of labyrinth 38 is not limited to the structure of the present embodiment, can adopt the complete cycle of the face of at least any one party in the axial inner ends face of the axial lateral surface of the outside diameter annulus section 35 that consists of labyrinth 38 and outer ring 2a, the structure etc. that has formed more than one groove is used for improving the various structures of labyrinth effect.If adopt such structure, can seek to improve leak tightness.
Distance between the axial medial surface of internal side diameter annulus section 33 and oil slinger 23, larger than the distance between the axial inner ends face of the axial lateral surface of outside diameter annulus section 35 and outer ring 2a, the space that has enough volumes in this part setting, wherein, described oil slinger 23 consists of and stops up seal ring 18b in a pair of seal ring 18a, the 18b of axial both ends open that rolling bodys arrange space 17, that be located at the axial inner ends side, and described rolling body arranges a plurality of balls 5 that are provided with in space 17 as rolling body.
The outer peripheral face of the outer ring minor diameter part 37 that the inner peripheral surface that makes outside diameter cylindrical portion 32 and axial inner ends at outer ring 2a arrange near and in opposite directions, near and in opposite directions part form labyrinth 39.In addition, the structure of labyrinth 39 is not limited to the structure of the present embodiment, at least any one party that can be in the outer peripheral face of the inner peripheral surface of the outside diameter cylindrical portion 32 that consists of labyrinth 39 and outer ring minor diameter part 37 is provided for improving the various structures of labyrinth effect.
In addition, make in the inner peripheral surface of centre hole 27a of steering swivel 8a except by the part the axial outer end part, and top edge part in opposite directions in the outer peripheral face of cover 29 outside diameter cylindrical portion 32 and the top edge of outside diameter cylindrical portion 32 and outer ring 2a and outside diameter cylindrical portion 32 namely be present between the step surface of inner end section of outer ring minor diameter part 37 the space near and in opposite directions, near and in opposite directions part formation labyrinth 41.
In addition, in the present embodiment, the inner peripheral surface of centre hole 27a by steering swivel 8a, the whole outside diameter cylindrical portion 32 of cover 29, but from guaranteeing wheel support with the viewpoint of the durability of roller bearing unit, need not across outside diameter cylindrical portion 32 axially on whole length labyrinth 41 is set.Particularly, as long as labyrinth 41 is located between the outer peripheral face of axially outer half one of the inner peripheral surface of centre hole 27a of steering swivel 8a and outside diameter cylindrical portion 32, just can fully obtain to guarantee the effect of the durability of device.In addition, also there is following situation: if utilize the inner peripheral surface of the centre hole of steering swivel, at least cover the top edge of outside diameter cylindrical portion 32 and be present in space (peristome) between top edge part in opposite directions in the outer ring 2a such as step surface of inner end section of outer ring minor diameter part 37 and outside diameter cylindrical portion 32, in this position, labyrinth is set, by the structure of other parts of design, can fully guarantee the durability of device.Therefore, as long as can realize in configuration aspects, can be less than the illustrated example by the axial width that makes steering swivel 8a, can seek the further lightweight of steering swivel 8a, this form is also in claimed scope of the present utility model.
In the present embodiment, the step surface of the top edge that makes outside diameter cylindrical portion 32 and the inner end section that is present in outer ring minor diameter part 37 near and in opposite directions, thereby the size in the space of this part 40 also narrows down.But, as long as can realize in configuration aspects, also can to a certain degree increase the axial dimension in space 40, and between labyrinth 39 and labyrinth 41, the space 40 with larger volume is set.In this situation, even based on the torque load that from the road surface, wheel is applied with supporting device for sluing mechanisms in driving process, wheel hub 4a and outer ring 2a and steering swivel 8a swing displacement and make the axial extent change in space 40, also can suppress the swabbing action that causes because of change, therefore, can improve the labyrinth effect.In addition, the structure of labyrinth 41 is not limited to the structure of the present embodiment, at least any one party that can be in the outer peripheral face of the inner peripheral surface of the centre hole 27 of the steering swivel 8a that consists of labyrinth 41 and outside diameter cylindrical portion 32 is provided for improving the various structures of labyrinth effect.
Compare with the labyrinth 28 of structure in the past, the position configuration of labyrinth 38,39,41 on will be axially near bearing center (comprise outer race track 6 and inner race track 9 axially on the imaginary plane of middle position and the intersection point of the center shaft of wheel hub 4a and outer ring 2a) the position.Like this, in the situation that the position near bearing center of labyrinth 38,39,41 on being disposed at axially, based on the labyrinth 39 in the situation of the torque load that from the road surface, wheel is applied with supporting device for sluing mechanisms in driving process, wheel hub 4a and outer ring 2a and steering swivel 8a swing displacement, 41 gap variation diametrically, less than the gap variation in the axial direction of labyrinth 38.Therefore, owing to setting labyrinth 39,41 gap less than the gap of labyrinth 38, therefore can improve the labyrinth effect.
In addition, structure about steering swivel 8a, also can form following structure: make the internal diameter of centre hole 27 of steering swivel 8a than large with the external diameter of the outer peripheral face of centre hole 27a outer ring 2a in opposite directions, the chimerism that makes steering swivel 8a and outer ring 2a is large free-running fit, only at Stationary side flange 7a in conjunction with fixedly steering swivel 8a and outer ring 2a.If adopt such structure, can reduce the steering swivel material, can realize reduction and the lightweight of fee of material.
In this situation, also can form the structure that does not form outer ring minor diameter part 37 at outer ring 2a.In this structure, make the internal diameter of centre hole 27 of steering swivel 8a slightly larger than the external diameter of cover 29 outside diameter cylindrical portion 32.In addition, the outside diameter cylindrical portion 32 of the outer ring minor diameter part of outer ring 2a 37 and cover 29 axially on length, and the top edge position in the axial direction of outside diameter cylindrical portion 32, can consider leak tightness or steering swivel 8a axially on thickness etc. suitably determine.For example, can suitably change outer ring minor diameter part 37 axially on length and outside diameter cylindrical portion 32 axially on length, and the axial location of the top edge of outside diameter cylindrical portion 32 is set in more position near the Stationary side flange of outer ring 2a.In this situation, by reduce steering swivel 8a axially on thickness, can realize the lightweight of steering swivel 8a, however, due to can keep labyrinth 41 axially on length, therefore, can seek to improve leak tightness.
In structure of the present utility model, by between cover 29 and outer ring 2a and steering swivel 8a, labyrinth 38,39,41 being set, thus, can fully guarantee durability.That is, by labyrinth 38,39,41, can prevent that foreign matter from arriving the periphery of the seal ring 18b that covers 29 inboards from space outerpace.Consequently, can prevent from entering because of foreign matter the damage that rolling body arranges the bearings such as peeling off of orbital plane that space 17 causes, rolling body surface.In addition, due to such labyrinth 38,39,41 position configuration in the axial direction in the position near bearing center, therefore, even based on the torque load that from the road surface, wheel is applied with supporting device for sluing mechanisms in driving process, wheel hub 4a and outer ring 2a and steering swivel 8a swing displacement, in this situation, the variation in the labyrinth 38,39 that also can reduce to produce based on this swing displacement, 41 gap.Consequently, can set the labyrinth 38,39 under the initial setting state, 41 gap little, can seek further to guarantee durability.
In addition, due to can reduce steering swivel 8a axially on thickness, therefore, can realize that wheel support is with the lightweight of bearing unit.Namely, in structure of the present utility model, due to the position that the top edge of cover 29 outside diameter cylindrical portion 32 can be configured near Stationary side flange 7a, therefore, even consider at the inner peripheral surface of the centre hole 27a of steering swivel 8a and cover between the outer peripheral face of 29 outside diameter cylindrical portion 32 labyrinth 41 is set, also can reduce steering swivel 8a axially on thickness.
In addition, the inner peripheral surface of the stage portion 34 of the inner peripheral surface of outside diameter cylindrical portion 32 and annulus section 31 is tilted along the direction that more becomes larger towards the axial outside, internal diameter.Therefore, in cover 29 inboard, when the foreign matters such as water that invade the periphery of seal ring 18b moved towards radial outside by centrifugal action, the inner peripheral surface of the outside diameter cylindrical portion 32 that is tilted, the guiding of the inner peripheral surface of stage portion 34 were easy to discharge to space outerpace.
[the 2nd example of embodiment]
Fig. 3 and Fig. 4 illustrate the 2nd example of the utility model embodiment.The wheel that consists of the present embodiment is made of the internal side diameter cylindrical portion 30a of elongation in the axial direction, the annulus 31a of section that extends diametrically and the outside diameter cylindrical portion 32 of extending in the axial direction with the cover 29a of roller bearing unit 1b with the wheel support of supporting device for sluing mechanisms.
The 31a of annulus section is made of the internal side diameter annulus 33a of section, stage portion 34a and the outside diameter annulus 35a of section.Especially, in the situation of the present embodiment, the internal side diameter annulus 33a of section forms towards the mode that radial outside at right angles bends with the axial inner ends from internal side diameter cylindrical portion 30a.Conversely, internal side diameter cylindrical portion 30a is from radial inner end lateral buckling outside axially of the internal side diameter annulus 33a of section.That is, in the situation of the present embodiment, the internal side diameter annulus 33a of section and internal side diameter cylindrical portion 30a axially on position relationship and embodiment the 1st routine opposite.
In addition, in the situation of the present embodiment, the external diameter of outside diameter cylindrical portion 32a than the outer peripheral face that consists of outer ring 2b, to be in the external diameter of axial inboard and the part except the minor diameter part 37a of outer ring large for the Stationary side flange 7b that compares in the 2b of outer ring.The basic structures such as the overbending direction of other cover 29a are the same with the 1st example of embodiment.
In the situation of the present embodiment, will form at the outer ring minor diameter part 37a that leans on axial inner ends partly to arrange of outer ring 2b the shallow state of outer ring minor diameter part 37 than the 1st example of embodiment.In other words, the Stationary side flange 7b that compares that reduces outer ring 2b is in the poor of the external diameter of axial inboard and the part except the minor diameter part 37a of outer ring and outer ring minor diameter part 37a.The outer peripheral face of the inner peripheral surface that makes outside diameter cylindrical portion 32a and outer ring minor diameter part 37a near and in opposite directions part, form labyrinth 39a.
In addition, the internal diameter of the centre hole 27b of steering swivel 8b is slightly larger than the external diameter of outside diameter cylindrical portion 32a.And, make the inner peripheral surface of centre hole 27b, and the top edge of the outer peripheral face of the outer peripheral face of outer ring 2b, outside diameter cylindrical portion 32a and outside diameter cylindrical portion 32a and be present between the step surface of inner end section of outer ring minor diameter part 37a space 40a near and in opposite directions, near and in opposite directions part form labyrinth 41a.In addition, in the situation of the present embodiment, the outer peripheral face of not chimeric fixedly outer ring 2b and the inner peripheral surface of steering swivel 8b, and only between Stationary side flange 7b and steering swivel 8b, that outer ring 2b and steering swivel 8b combination is fixing.
In the situation of the present embodiment, internal side diameter cylindrical portion 30a is arranged to extend towards the axial outside from the annulus 31a of section that consists of cover 29a.Therefore, can reduce for outer build-in decide inner ring minor diameter part 36a internal side diameter cylindrical portion 30a, inner ring 12b axially on size.Consequently, can realize wheel further miniaturization and the lightweight of supporting device for sluing mechanisms.
In addition, form following structure: increase the centre hole 27b of steering swivel 8b, outer ring 2b only is combined fixing at Stationary side flange 7b with steering swivel 8b.Therefore, the material of steering swivel 8b can be reduced, the minimizing of fee of material and the lightweight of device can be realized.Other structures, effect and effect are the same with the 1st example of embodiment.
[the 3rd example of embodiment]
Fig. 5 and Fig. 6 illustrate the 3rd example of the utility model embodiment.The wheel wheel support roller bearing unit 1c of supporting device for sluing mechanisms that consists of the present embodiment, on the oil slinger 23 of the part of seal ring 18b in consisting of seal ring 18a, 18b, that be located at the axial inner ends side, the attached circular coder 24 of being made by permanent magnets such as ferro-gum, plastic magnets that is fixed with.In addition, the structure of such coder 24 is the same with the structure of known coder in the past, so detailed.
In the situation of the present embodiment, cover 29b obtains by the sheet material bending and forming that the nonmagnetic metal plate that comprises aluminium class alloy sheets, austenitic stainless steel plate or other non-magnetic materials are consisted of, and is made of the annulus 31b of section of the internal side diameter cylindrical portion 30b of elongation in the axial direction, elongation diametrically and the outside diameter cylindrical portion 32b of elongation in the axial direction.
The 31b of annulus section at right angles bends and extends towards radial outside from the axial outer end of internal side diameter cylindrical portion 30b.That is, the annulus 31b of section does not have the 1st example of embodiment and the annulus section 31 of the 2nd example, stage portion 34, the 34a that 31a has.In addition, outside diameter cylindrical portion 32b arranges in the mode that the radial outer end from the annulus 31b of section at right angles bends towards the axial outside.
On the other hand, the axial lateral surface of the annulus 31b of section between the axial inner ends face of the part of the outer end of pars intermedia radially and outer ring 2a, between the outer peripheral face of the inner peripheral surface of the outside diameter cylindrical portion 32b of cover 29b and the outer ring minor diameter part 37 of outer ring 2a, the top edge of the outer peripheral face of the inner peripheral surface of the centre hole 27a of steering swivel 8a and the outside diameter cylindrical portion 32b of cover 29b and outside diameter cylindrical portion 32b and being present between space 40 between the step surface of inner end section of outer ring minor diameter part 37, the 1st routine the same labyrinth 38,39,41 of setting and embodiment.In addition, the structure of steering swivel 8a is the same with the 1st example of embodiment.
In the situation of the present embodiment, make base end part be supported on draft hitch a part sensor 42 test section across the detected face of the cover annulus 31b of section of 29b and coder 24 in opposite directions.29b rotates together with wheel hub 4a due to cover, therefore, is difficult to adhere to the foreign matters such as small pieces, powder of the ferromagnetism bodies such as iron plate, iron powder on 29b at cover.Therefore, can guarantee the reliability that utilizes sensor 42 to detect.Other structures, effect and effect are the same with the 1st example of embodiment.
Industrial applicibility
The wheel support that the utility model is widely used in being used for supporting wheel by combination is with roller bearing unit and consist of the wheel supporting device for sluing mechanisms that automobile that the steering swivel of a part of the independent suspension formula draft hitch of automobile consists of is used.
Claims (5)
1. a wheel supporting device for sluing mechanisms, is characterized in that possessing: the steering swivel that consists of draft hitch; Be used for rotation of wheel is supported on freely the wheel support roller bearing unit of this steering swivel,
Described wheel support possesses with roller bearing unit:
The suitable parts in outer ring, it possesses the multiple row outer race track that forms at inner peripheral surface and forms at outer peripheral face the Stationary side flange that described steering swivel is fixed in also combination, and the suitable parts in this outer ring do not rotate yet in use;
The suitable parts of inner ring, it possesses the multiple row inner race track that forms at outer peripheral face, and rotation in use;
A plurality of rolling bodys, it is arranged between described multiple row inner race track and described multiple row outer race track by row; With
Cover, it is arranged between the axial inner ends opening and space outerpace that the rolling body that is provided with described rolling body arranges the space, and has: in the internal side diameter cylindrical portion that extends axially and be supported on the suitable parts of described inner ring; The annulus section of extending from the part of described internal side diameter cylindrical portion towards radial outside; The outside diameter cylindrical portion of extending towards the axial outside with radial outer end from described annulus section,
Described steering swivel possesses centre hole, this centre hole within it in the outer peripheral face of the suitable parts in the described outer ring of footpath side configuration, compare the outer peripheral face that described Stationary side flange is in axial inboard,
Described internal side diameter cylindrical portion supporting is being fixed under the state of the suitable parts of described inner ring, the outer peripheral face of the inner peripheral surface of the outside diameter cylindrical portion of described cover and these suitable parts in outer ring near and in opposite directions part, and, in the top edge parts suitable for described outer ring of the inner peripheral surface of the centre hole of described steering swivel and described at least outside diameter cylindrical portion and described top edge part in opposite directions between the space near and in opposite directions part, be respectively arranged with labyrinth.
2. wheel supporting device for sluing mechanisms as claimed in claim 1, is characterized in that,
Axial inner ends section in the outer peripheral face of the suitable parts in described outer ring, be formed with the path stage portion recessed from this outer peripheral face to radially inner side at complete cycle, the outer peripheral face of this path stage portion and described outside diameter cylindrical portion near and in opposite directions, forms the labyrinth of the close and part in opposite directions of the outer peripheral face of the suitable parts of inner peripheral surface and described outer ring of described outside diameter cylindrical portion.
3. wheel supporting device for sluing mechanisms as claimed in claim 1, is characterized in that,
The axial inner ends face of the suitable parts of at least a portion and described outer ring in the axial lateral surface of described annulus section near and in opposite directions, this near and in opposite directions part also be provided with labyrinth.
4. wheel supporting device for sluing mechanisms as claimed in claim 3, is characterized in that,
The annulus section of described cover has: internal side diameter annulus section; With than the axial state in the outside outside diameter annulus section that arranges of this internal side diameter annulus section deflection; With make the continuous continuous stage portion of described internal side diameter annulus section and described outside diameter annulus section,
The axial lateral surface of described outside diameter annulus section consist of with the axial inner ends face of the suitable parts in described outer ring near and the part of the axial lateral surface of in opposite directions described annulus section,
The inner peripheral surface of described continuous stage portion tilts along the direction that more becomes larger towards the axial outside, internal diameter,
The inner peripheral surface of the outside diameter cylindrical portion of described cover tilts along the direction that more becomes larger towards the axial outside, internal diameter.
5. wheel supporting device for sluing mechanisms as claimed in claim 1, is characterized in that,
Possess: coder, itself and this suitable parts of inner ring are supported with one heart and are fixed on the suitable parts of described inner ring or are fixed on the parts of the suitable parts of this inner ring, and the axial medial surface of this coder becomes the detected face that magnetism characteristic in a circumferential direction alternately changes; And sensor, it has the axial medial surface test section in opposite directions across described cover and described coder, and described cover is made by non magnetic plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011235116A JP5842536B2 (en) | 2011-10-26 | 2011-10-26 | Rotation support device for wheels |
| JP2011-235116 | 2011-10-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202935090U true CN202935090U (en) | 2013-05-15 |
Family
ID=48319346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220336845 Expired - Fee Related CN202935090U (en) | 2011-10-26 | 2012-07-11 | Rotary bearing device for wheel |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5842536B2 (en) |
| CN (1) | CN202935090U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498876A (en) * | 2013-09-01 | 2014-01-08 | 南通儒尚电动车科技有限公司 | Ball bearing device for wheel hub |
| CN104329380A (en) * | 2013-07-01 | 2015-02-04 | Skf公司 | Hub bearing unit equipped with a low friction sealing assembly |
| CN104343826A (en) * | 2013-08-02 | 2015-02-11 | Skf公司 | Sealing device for a hub-wheel assembly |
| CN105793588A (en) * | 2013-12-17 | 2016-07-20 | 株式会社捷太格特 | Hub unit |
| CN109072980A (en) * | 2016-04-20 | 2018-12-21 | Nok株式会社 | Seal construction |
| CN110023180A (en) * | 2016-12-28 | 2019-07-16 | 阿尔卑斯阿尔派株式会社 | The position detecting device of bracket |
| CN110657163A (en) * | 2018-06-29 | 2020-01-07 | 中西金属工业株式会社 | Seal for rotation |
| CN113819238A (en) * | 2021-08-31 | 2021-12-21 | 岚图汽车科技有限公司 | Sealing structure of hub bearing end and automobile |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6968044B2 (en) * | 2018-08-16 | 2021-11-17 | Ntn株式会社 | Bearing device for wheels |
| DE102018213993A1 (en) * | 2018-08-20 | 2020-02-20 | Aktiebolaget Skf | sealing arrangement |
| IT201900011646A1 (en) * | 2019-07-12 | 2021-01-12 | Skf Ab | THIN SECTION BEARING UNIT |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT223279Z2 (en) * | 1991-09-04 | 1995-06-21 | Skf Ind Spa | FLOW CONCENTRATOR FOR ROTATION SPEED DETECTION SYSTEMS BETWEEN TWO BODIES IN RELATIVE ROTATION. |
| JP3128062B2 (en) * | 1997-01-27 | 2001-01-29 | 日本精工株式会社 | Bearing seal device for water pump, bearing for water pump, and water pump for water-cooled engine of automobile |
| JP2006046493A (en) * | 2004-08-04 | 2006-02-16 | Nsk Ltd | Wheel rolling bearing |
| JP2006188171A (en) * | 2005-01-07 | 2006-07-20 | Honda Motor Co Ltd | Bearing device for driving wheel |
| JP4371429B2 (en) * | 2007-05-29 | 2009-11-25 | Ｎｔｎ株式会社 | Wheel bearing device |
| JP2010230080A (en) * | 2009-03-27 | 2010-10-14 | Ntn Corp | Wheel bearing device with rotation speed detector |
-
2011
- 2011-10-26 JP JP2011235116A patent/JP5842536B2/en active Active
-
2012
- 2012-07-11 CN CN 201220336845 patent/CN202935090U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329380A (en) * | 2013-07-01 | 2015-02-04 | Skf公司 | Hub bearing unit equipped with a low friction sealing assembly |
| CN104343826A (en) * | 2013-08-02 | 2015-02-11 | Skf公司 | Sealing device for a hub-wheel assembly |
| CN104343826B (en) * | 2013-08-02 | 2017-12-15 | Skf公司 | The sealing device of hub unit |
| CN103498876B (en) * | 2013-09-01 | 2015-11-18 | 南通儒尚电动车科技有限公司 | Wheel hub ball bearing unit |
| CN103498876A (en) * | 2013-09-01 | 2014-01-08 | 南通儒尚电动车科技有限公司 | Ball bearing device for wheel hub |
| CN105793588B (en) * | 2013-12-17 | 2019-01-04 | 株式会社捷太格特 | hub unit |
| CN105793588A (en) * | 2013-12-17 | 2016-07-20 | 株式会社捷太格特 | Hub unit |
| CN109072980A (en) * | 2016-04-20 | 2018-12-21 | Nok株式会社 | Seal construction |
| CN110023180A (en) * | 2016-12-28 | 2019-07-16 | 阿尔卑斯阿尔派株式会社 | The position detecting device of bracket |
| CN110023180B (en) * | 2016-12-28 | 2021-03-09 | 阿尔卑斯阿尔派株式会社 | Position detection device for bracket |
| CN110657163A (en) * | 2018-06-29 | 2020-01-07 | 中西金属工业株式会社 | Seal for rotation |
| CN110657163B (en) * | 2018-06-29 | 2021-04-30 | 中西金属工业株式会社 | Seal for rotation |
| CN113819238A (en) * | 2021-08-31 | 2021-12-21 | 岚图汽车科技有限公司 | Sealing structure of hub bearing end and automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5842536B2 (en) | 2016-01-13 |
| JP2013092213A (en) | 2013-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202935090U (en) | Rotary bearing device for wheel | |
| CN103987976A (en) | Rolling bearing unit with combination seal ring | |
| JP6111740B2 (en) | Rolling bearing unit for wheel support | |
| WO2014185458A1 (en) | Rolling bearing unit with combination seal ring | |
| JP2008501096A (en) | Wheel bearing device having encoder and sensor | |
| JP4683496B2 (en) | Wheel bearing device | |
| CN107360728A (en) | It is combined with the wheel bearing arrangement of wheel speed detector | |
| JP2011079512A (en) | Rolling bearing unit with rotating speed detecting device | |
| JP2010151279A (en) | Wheel bearing device with rotation speed detector | |
| CN202707790U (en) | Bearing unit for a wheel bearing | |
| JP5691859B2 (en) | Rolling bearing unit with encoder | |
| WO2012077685A1 (en) | Wheel bearing device with rotational speed detector | |
| JP5252101B2 (en) | Rolling bearing with encoder | |
| JP2012255455A5 (en) | ||
| JP2008082483A (en) | Rolling bearing unit with state quantity measuring device | |
| JP2020076420A (en) | Hub unit bearing | |
| JP6648904B2 (en) | Wheel bearing device | |
| JP5598150B2 (en) | Rolling bearing unit with encoder | |
| CN203702886U (en) | Bearing unit with rotational speed detection device | |
| US10718376B2 (en) | Wheel bearing device | |
| JP2007232150A (en) | Seal with encoder and bearing unit | |
| JP6744724B2 (en) | Wheel bearing device | |
| JP5002992B2 (en) | Rolling bearing with encoder | |
| JP2018132101A (en) | Driven-wheel support rolling bearing unit | |
| JP6488920B2 (en) | Rolling bearing unit with rotational speed detector |
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: 20130515 Termination date: 20200711 |