CN208248294U - A kind of automobile front axle knuckle and preceding shaft connection mechanism - Google Patents
A kind of automobile front axle knuckle and preceding shaft connection mechanism Download PDFInfo
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- CN208248294U CN208248294U CN201820856473.5U CN201820856473U CN208248294U CN 208248294 U CN208248294 U CN 208248294U CN 201820856473 U CN201820856473 U CN 201820856473U CN 208248294 U CN208248294 U CN 208248294U
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- Prior art keywords
- stub
- front axle
- knuckle
- cylindrical hole
- roller bearing
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Abstract
The utility model discloses a kind of automobile front axle knuckles and preceding shaft connection mechanism, including the knuckle and front axle connected by stub, it is characterized by: the upper cylindrical hole of the knuckle, tapered roller bearing is arranged in interference fit respectively in lower cylindrical hole, needle bearing, the tapered roller bearing, transition fit between needle bearing and stub, it is equipped in the upper cylindrical hole and cooperates with tapered roller bearing, by the first limiting device of stub axial limiting, the second limiting device with stub surface engagement is equipped in the kingpin bore of the front axle, second limiting device is axial by stub to the axial force of stub by the first limiting device, radial limit.Tapered roller bearing can bear axial force and bear radial force in the utility model, and bearing capacity is big, be not easy to loosen；Stub is connect with knuckle lower end using needle bearing, is turned to light.
Description
Technical field
The utility model relates to auto parts and components, in particular to a kind of automobile front axle knuckle and preceding shaft connection mechanism.
Background technique
Automobile front axle is to be connected by suspension with vehicle frame, is also held outside the vertical load between ground and vehicle frame to bear
The torque constituted by brake force and lateral force and these power, and guarantee that deflecting roller does correct movement.To make automobile be expert at
There is preferable straight-line travelling ability in sailing, it is desirable to: the knuckle and stub of preceding bridge, the frictional force between knuckle and front axle
It is as small as possible, to guarantee the portability of steering operation, and there are enough wearabilities；Front axle wheel it is shimmy answer it is as small as possible, with
Guarantee the normal table traveling of automobile.
Preceding bridge is to connect between knuckle and front axle by stub, realizes go to action to the rotation of knuckle, existing
There are automobile front axle knuckle and preceding Axile connection structure as shown in Figure 1, knuckle 1 is equipped with upper cylindrical hole 1.1, lower cylindrical hole 1.2,
Bushing 5 is loaded in the built-in upper bushing 4 of upper cylindrical hole 1.1, lower cylindrical hole 1.2, is interference fitted between cylindrical hole and bushing, stub 2 is worn
Cross upper bushing 4, the inner hole clearance fit of lower bushing 5.Front axle 3 is equipped with kingpin bore 3.1, and the middle part of stub 2 cuts with groove, installs
When be horizontally through kingpin bore 3.1 and 2 upper groove of stub with taper 6 and cooperate, stub 2 is fixed in 3 kingpin bore 3.1 of front axle, it is main
Selling with front axle is that clearance fit (also has the structure using stub and front axle interference fit, but production and later period maintenance cost are very
It is high), and thrust bearing 7 is installed to carry axial direction between lower 3.1 lower end surface of cylindrical hole 1.2 and 3 kingpin bore of front axle of knuckle 1
Power is equipped with adjustment gasket 8 between upper cylindrical hole 1.1, kingpin bore 3.1.Not only bearing capacity is small for this structure, but also cooperation is not close,
Easily there is stub inordinate wear, and structure is more complex, makes in car running process, knuckle easily occurs in preceding bridge, and play is existing up and down
As causing automobile front axle to generate shake, influencing automobile driving safe.
Therefore, it is necessary to develop, a kind of steering is flexible, the stub service life is long, the good automobile front axle steering of polarization above and below stub
Section and preceding shaft connection mechanism.
Summary of the invention
The purpose of this utility model seeks to solve the deficiency of above-mentioned background technique, provide it is a kind of turn to flexibly, the stub longevity
Polarization good automobile front axle knuckle and preceding shaft connection mechanism above and below life length, stub.
The technical solution of the utility model are as follows: a kind of automobile front axle knuckle and preceding shaft connection mechanism, including pass through stub
The knuckle and front axle of connection, it is characterised in that: interference fit setting respectively in the upper cylindrical hole of the knuckle, lower cylindrical hole
Tapered roller bearing, needle bearing, transition fit between the tapered roller bearing, needle bearing and stub, the upper cylindrical hole
It is interior to be equipped with tapered roller bearing cooperation, by the first limiting device of stub axial limiting, it is equipped in the kingpin bore of the front axle
With the second limiting device of stub surface engagement, second limiting device is by the first limiting device to the axial action of stub
Power is axial by stub, radial direction limits.This programme is cooperated by the second limiting device and the first limiting device, not only limits its stub
Radial motion also strengthens the axial limiting of stub, will securely fix between stub and front axle.This programme utilizes the first limit dress
Set, the second limiting device by knuckle, front axle, stub be axially formed stress entirety, avoid the play up and down of knuckle.
Preferably, first limiting device include stub with tapered roller bearing cooperation above the threaded portion that opens up
And locking nut, the locking nut is connect with threaded portion and to be bonded tapered roller bearing internal ring upper surface tight by stub
Gu.Locking nut and threaded portion cooperate in this programme, and stub is limited in the axial direction, makes stub by preload axially upwards
Power.
Further, anti-attrition gasket is equipped between the locking nut and tapered roller bearing internal ring upper surface.Work as knuckle
When around stub rotation, tapered roller bearing Internal and external cycle is relatively rotated, and nothing turns between tapered roller bearing internal ring and stub, locking nut
It is dynamic, the advantageous contact area increased between tapered roller bearing internal ring upper surface and locking nut of the setting of anti-attrition gasket.
Preferably, second limiting device includes the first tapered surface that the axial uniform shrinkage upward in stub surface is formed,
First tapered surface includes that middle part is recessed machined surface, and the stub internal surface of hole is equipped with corresponding with the first tapered surface the
Two tapered surfaces, second tapered surface and machined surface corresponding position, which extend out to be formed, exempts from interference surface, and the interference surface of exempting from is greater than for diameter
The anchor ring of machined surface bottom diameter.The first tapered surface and the second tapered surface utilize stub in the first limiting device in this programme
Upward pretightning force is bonded, after abutting between stub and front axle axially and radially between equal gapless, thus by stub in axis
To, radial limit.Compared with existing taper component carries out axial, radial limit, the advantages of the utility model has: stub passes through
First limiting device, the second limiting device interact between knuckle, front axle respectively, therefore axis between stub, knuckle, front axle
To the stabilising system for forming mutual stress, the play up and down of knuckle is avoided；Cone match is by stub in second limiting device
Suffered axial pre tightening force has changed radial coupling mechanism force into, makes stub in axial, radial direction while limiting.
Further, first tapered surface further includes the upper conical face above machined surface, the inferior pyramidal below machined surface
Face, the upper conical face, inferior pyramidal face are located on the axial same circular conical surface of uniform shrinkage upward.First tapered surface in this programme
On the one hand it is easy to process for being arranged to the shape of indent among two end cone faces, be on the other hand to reduce intermediate binding face to improve the
One tapered surface entirety Anawgy accuracy.
Further, the stub is equipped with pin portion and tapered roller bearing transition fit in cylinder, on the stub
Equipped with cylindrical lower pin portion and needle bearing transition fit, first tapered surface is between upper pin portion, lower pin portion.
Preferably, the upper oil sealing with the sealing cooperation of tapered roller bearing lower end, the lower circle are equipped in the upper cylindrical hole
The lower oil sealing with the sealing cooperation of needle bearing upper end is equipped in post holes.
Preferably, the upper cylindrical hole upper end is equipped with upper end cover, and the lower cylindrical hole lower end is equipped with lower cover.
Further, it is threadedly coupled between the upper cylindrical hole upper end and upper end cover, spiral shell between the lower cylindrical hole and lower cover
Line connection.
Further, the upper end cover, be equipped with grease nipple on lower cover.
The utility model has the following beneficial effects:
1. interference fit tapered roller bearing in cylindrical hole on knuckle, interference fit needle roller in lower cylindrical hole
Bearing.Tapered roller bearing can bear axial force and bear radial force, and bearing capacity is big, be not easy to loosen；Stub and steering
It saves lower end to connect using needle bearing, turn to light.
2. connecting between stub and front axle using the structure in double cone face, do not need to use taper component, structure is simple, is easy to fill
Match and repairs.
3. cylindrical hole on increases oil sealing at lower cylindrical hole inner bearing, prevent silt from entering, and reduces stub inordinate wear, mentions
High ease of steering.
4. the thrust bearing between knuckle and front axle is cancelled, original function is completed by tapered roller bearing, and structure simplifies,
Performance of feeling relieved is more preferable.
Detailed description of the invention
Fig. 1 is automobile front axle knuckle in the prior art and preceding shaft connection mechanism part drawing
Fig. 2 is the utility model automobile front axle knuckle and preceding shaft connection mechanism part drawing
Fig. 3 is the utility model assembled state sectional view
Fig. 4 is main latch structure schematic diagram
Wherein: bushing 6- taper 7- thrust bearing 8- adjusts gasket 9- under 1- knuckle 2- stub 3- front axle 4- upper bushing 5-
Tapered roller bearing 10- needle bearing 11- upper end cover 12- lower cover 13- locking nut 14- anti-attrition gasket the first tapered surface of 15-
Cylindrical hole 3.1- kingpin bore under cylindrical hole 1.2- on oil sealing 19- grease nipple 1.1- under oil sealing 18- on the second tapered surface of 16- 17-
The upper conical face 15.3- inferior pyramidal face 16.1- of pin portion 2.3- lower pin portion 15.1- machined surface 15.2- exempts to do on the 2.2- of the threaded portion 2.1-
Relate to face.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
It is as shown in Figure 1 existing front axle steering knuckle and preceding shaft connection mechanism, is explained in detail in the background technology,
It is repeated no more in this.
As in Figure 2-4, front axle steering knuckle provided by the utility model and preceding shaft connection mechanism, including connected by stub 2
The knuckle 1 and front axle 3 connect, stub 2 are equipped with pin portion 2.2 and upper 1.1 corresponding matching of cylindrical hole in cylinder, set on stub 2
There are cylindrical lower pin portion 2.3 and lower 1.2 corresponding matching of cylindrical hole, tapered roller bearing is set in the upper cylindrical hole 1.1 of knuckle 1
9 are set in cylindrical hole 1.1 with upper 2.2 transition fit of pin portion, the interference fit of tapered roller bearing 9；It is set in lower cylindrical hole 1.2
Needle bearing 10 and 2.3 transition fit of lower pin portion are set, the interference fit of needle bearing 10 is set in lower cylindrical hole 1.2.
The first limiting device being axially moved with the cooperation of tapered roller bearing 9, limitation stub 2 is equipped in upper cylindrical hole 1.1,
The second limiting device with 2 surface engagement of stub is equipped in kingpin bore 3.1, upper 1.1 upper end of cylindrical hole is equipped with upper end cover 11, lower circle
1.2 lower end of post holes is equipped with lower cover 12, and adjustment gasket 8 is equipped between upper cylindrical hole 1.1, kingpin bore 3.1.
First limiting device include stub 2 with 9 cooperation of tapered roller bearing at the screw thread that opens up of (upper pin portion 2.2) top
Portion 2.1 and locking nut 13, locking nut 13 are threadedly coupled with threaded portion 2.1 and are bonded 9 inner ring upper end of tapered roller bearing
Face fastens stub 2.Locking nut 13 it is axial towards lower feeding when stub 2 move upward.Locking nut 13 and tapered roller bearing 9
Anti-attrition gasket 14 is equipped between inner ring upper surface, 14 outer diameter of anti-attrition gasket is less than 9 outer ring internal diameter of tapered roller bearing.When knuckle 1
When around stub rotation, 9 Internal and external cycle of tapered roller bearing is relatively rotated, 9 inner ring of tapered roller bearing and stub 2, locking nut 13
Between without rotation, the setting of anti-attrition gasket 14 is advantageous to increase the contact between locking nut 13 of 9 inner ring upper surface of tapered roller bearing
Area.
Second limiting device includes the first tapered surface 15 that the axial uniform shrinkage upward in 2 surface of stub is formed, the first taper
Face 15 includes that middle part is recessed machined surface 15.1, further includes upper conical face 15.2, the machined surface 15.1 of 15.1 top of machined surface
The inferior pyramidal face 15.3 of lower section, upper conical face 15.2, inferior pyramidal face 15.3 are located at the same circular conical surface of axial uniform shrinkage upward
On.3.1 inner surface of kingpin bore is equipped with second tapered surface 16 corresponding with the first tapered surface 15, the second tapered surface 16 and machined surface
15.1 corresponding positions, which extend out to be formed, exempts from interference surface 16.1, exempts from the annulus that interference surface 16.1 is 15.1 bottom diameter of diameter > machined surface
Face.Second tapered surface 16 limits moving axially upwards for stub 2 with the cooperation of the first tapered surface 15.First tapered surface 15 is arranged to
The shape of the intermediate indent (machined surface 15.1) of two end cone faces (upper conical face 15.2, inferior pyramidal face 15.3) is on the one hand processing side
It just, is on the other hand to reduce intermediate binding face to improve the whole Anawgy accuracy of the first tapered surface 15.First tapered surface 15 is located at upper
Between pin portion 2.2, lower pin portion 2.3 and both ends are connect with upper pin portion 2.2, lower pin portion 2.3 respectively.
The upper oil sealing 17 with the sealing cooperation of 9 lower end of tapered roller bearing is equipped in upper cylindrical hole 1.1.In lower cylindrical hole 1.2
Equipped with the lower oil sealing 18 with the sealing cooperation of 10 upper end of needle bearing.It is threadedly coupled between upper 1.1 upper end of cylindrical hole and upper end cover 11, under
It is threadedly coupled between cylindrical hole 1.2 and lower cover 12.Grease nipple 19 is equipped on upper end cover 11, lower cover 12.
The working principle of the utility model are as follows:
First the first tapered surface 15 of stub 2 and the second tapered surface 16 of front axle 3 are cooperated when assembly, the second tapered surface 16 limit
It is moved axially upward to make its stub 2, then locking nut 13 is threadedly coupled with threaded portion 2.1 by 2 axial locking of stub, locking screw
Mother 13, which compresses 9 inner ring of tapered roller bearing, makes stub 2 by pretightning force axially upwards, and the first tapered surface 15 and second is bored at this time
Shape face 16 is close to, between stub 2 and front axle 3 axially and radially between equal gapless, so that stub 2 firmly be limited axial, radial.
The pretightning force of tapered roller bearing 9 can be adjusted by the screw-down torque of locking nut 13, to adjust knuckle rotation
Torque makes knuckle around stub flexible rotating, adjusts gasket 8 to adjust axial gap.Upper oil sealing 17, lower oil sealing 18 prevent
Silt enters in tapered roller bearing 9 and needle bearing 10, and grease nipple 19 is used to add to tapered roller bearing 9, needle bearing 10
Infuse lubricating grease.
Claims (10)
1. a kind of automobile front axle knuckle and preceding shaft connection mechanism, including the knuckle (1) and front axle connected by stub (2)
(3), it is characterised in that: the interior setting circle of interference fit respectively of upper cylindrical hole (1.1), the lower cylindrical hole (1.2) of the knuckle (1)
Taper roller bearing (9), needle bearing (10), transition is matched between the tapered roller bearing (9), needle bearing (10) and stub (2)
It closes, is equipped in the upper cylindrical hole (1.1) and is filled with tapered roller bearing (9) cooperation, by first limit of stub (2) axial limiting
It sets, the second limiting device with stub (2) surface engagement, second limit is equipped in the kingpin bore (3.1) of the front axle (3)
Device is limited by the way that the first limiting device is stub (2) is axial, radial to the axial force of stub (2).
2. automobile front axle knuckle as described in claim 1 and preceding shaft connection mechanism, it is characterised in that: the first limit dress
Set including stub (2) with tapered roller bearing (9) cooperation at the threaded portion (2.1) that opens up of top and locking nut (13),
The locking nut (13) is threadedly coupled with threaded portion (2.1) and is bonded tapered roller bearing (9) inner ring upper surface for stub (2)
Fastening.
3. automobile front axle knuckle as claimed in claim 2 and preceding shaft connection mechanism, it is characterised in that: the locking nut
(13) anti-attrition gasket (14) are equipped between tapered roller bearing (9) inner ring upper surface.
4. automobile front axle knuckle as described in claim 1 and preceding shaft connection mechanism, it is characterised in that: the second limit dress
The first tapered surface (15) formed including the axial uniform shrinkage upward in stub (2) surface is set, first tapered surface (15) includes
Middle part is recessed machined surface (15.1), and kingpin bore (3.1) inner surface is equipped with corresponding with the first tapered surface (15) second
Tapered surface (16), second tapered surface (16) and machined surface (15.1) corresponding position, which extend out to be formed, exempts from interference surface (16.1), described
Exempting from interference surface (16.1) is the anchor ring that diameter is greater than machined surface (15.1) bottom diameter.
5. automobile front axle knuckle as claimed in claim 4 and preceding shaft connection mechanism, it is characterised in that: first tapered surface
It (15) further include the upper conical face (15.2) above machined surface (15.1), the inferior pyramidal face (15.3) below machined surface (15.1),
The upper conical face (15.2), inferior pyramidal face (15.3) are located on the axial same circular conical surface of uniform shrinkage upward.
6. automobile front axle knuckle as claimed in claim 4 and preceding shaft connection mechanism, it is characterised in that: on the stub (2)
Equipped with pin portion (2.2) in cylinder and tapered roller bearing (9) transition fit, the stub (2) is equipped with cylindrical lower pin portion
(2.3) with needle bearing (10) transition fit, first tapered surface (15) be located at upper pin portion (2.2), lower pin portion (2.3) it
Between.
7. automobile front axle knuckle as described in claim 1 and preceding shaft connection mechanism, it is characterised in that: the upper cylindrical hole
(1.1) it is equipped with the upper oil sealing (17) with the sealing cooperation of tapered roller bearing (9) lower end in, is equipped in the lower cylindrical hole (1.2)
With the lower oil sealing (18) of needle bearing (10) upper end sealing cooperation.
8. automobile front axle knuckle as described in claim 1 and preceding shaft connection mechanism, it is characterised in that: the upper cylindrical hole
(1.1) upper end is equipped with upper end cover (11), and lower cylindrical hole (1.2) lower end is equipped with lower cover (12).
9. automobile front axle knuckle as claimed in claim 8 and preceding shaft connection mechanism, it is characterised in that: the upper cylindrical hole
(1.1) it is threadedly coupled between upper end and upper end cover (11), is threadedly coupled between the lower cylindrical hole (1.2) and lower cover (12).
10. automobile front axle knuckle as claimed in claim 8 and preceding shaft connection mechanism, it is characterised in that: the upper end cover
(11), grease nipple (19) are equipped on lower cover (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820856473.5U CN208248294U (en) | 2018-06-04 | 2018-06-04 | A kind of automobile front axle knuckle and preceding shaft connection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820856473.5U CN208248294U (en) | 2018-06-04 | 2018-06-04 | A kind of automobile front axle knuckle and preceding shaft connection mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208248294U true CN208248294U (en) | 2018-12-18 |
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ID=64653147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820856473.5U Active CN208248294U (en) | 2018-06-04 | 2018-06-04 | A kind of automobile front axle knuckle and preceding shaft connection mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208248294U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108482482A (en) * | 2018-06-04 | 2018-09-04 | 湖北三环车桥有限公司 | A kind of automobile front axle knuckle and preceding shaft connection mechanism |
-
2018
- 2018-06-04 CN CN201820856473.5U patent/CN208248294U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108482482A (en) * | 2018-06-04 | 2018-09-04 | 湖北三环车桥有限公司 | A kind of automobile front axle knuckle and preceding shaft connection mechanism |
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