CN2301369Y

CN2301369Y - Needle bearing insert for automotive steering arm and center axle

Info

Publication number: CN2301369Y
Application number: CN 97219850
Authority: CN
Inventors: 杨辉遐
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-07-15
Filing date: 1997-07-15
Publication date: 1998-12-23
Anticipated expiration: 2007-07-15

Abstract

The utility model relates to an insert for an automotive steering arm and a center axle. A needle bearing insert comprising an inner insert, an outer insert and a needle bearing, wherein, the inner insert is divided into an upper inner insert and a lower inner insert, and a spacer ring is arranged between the upper inner insert and the lower inner insert; a needle bearing and an O-shaped sealing ring are respectively arranged between the upper inner insert and the outer insert and between the lower inner insert and the outer insert; an antifriction cushion ring is arranged between the dummy club of the lower inner insert and the dummy club of the outer insert. Compared with prior art, the utility model has the advantages of small abrasion, long service life, small interstice, flexible and smooth operation of a steering wheel, strong vibration bearing ability, etc.

Description

The needle bearing bushing of motor turning arm and center shaft

The utility model relates to the bush structure between mid-get car spindle arm and the center shaft, is a kind of needle bearing bushing specifically.

Lining between spindle arm and the center shaft is to be contained on the axle beam of automobile, and in steering procedure, lining and spindle arm and center shaft have a significant impact the operation of bearing circle and the stationarity of driving in friction constantly.It is more little to rub, and rotates flexibly more, and bearing circle operation is laborsaving more; Gap between center shaft, lining, the spindle arm is more little, and wheel steering is steady more.Existing lining adopts nylon or Other Engineering plastics to make integral structure, can not alleviate the vibration of being transmitted by the chassis, influences the operation of bearing circle.CN2224753Y disclosed a kind of " automobile steering arm center bush " is the central authorities at above-mentioned nyliner, and folder one deck rubber or foamed plastic are made the vibration damping layer.Though this lining can absorb some vibrations, poor effect.In addition, it is the same with pure nyliner, does not have dust prevention, quick abrasion, and service life is short.The nylon of prior art or the nyliner of channel rubber is arranged, although the friction coefficient of nylon is less, frictional behaviour is still not ideal enough.Adopt integrally-built lining simultaneously, the gap of it and spindle arm and center shaft is subjected to the restriction of working accuracy generally bigger, and serious wear is used to make the bearing circle operation not steady soon in addition.

The purpose of this utility model is the deficiency that overcomes prior art, and a kind of long service life is provided, and it is strong to bear vibration ability, makes the needle bearing bushing of bearing circle smooth operation.

The technical solution of the utility model is center shaft, the lining prior art, and the cliding friction between the spindle arm is paid and changed friction of rolling into and pay, and is about to the integral type lining and changes the compound type lining into.Needle bearing bushing is made of interior cover, overcoat and needle bearing, and interior cover divides two parts up and down, between the interior up and down cover spacing collar is arranged; Between cover and overcoat, following interior cover and the overcoat needle bearing is housed respectively in going up; Cover and overcoat in going up also are equipped with the O RunddichtringO between interior down cover and the overcoat; Between the boss of the boss of cover and overcoat the anti-attrition packing ring is housed down.Needle bearing is made up of inner ring, outer ring and needle roller, the outside face flush fit of the inner ring of needle bearing and interior cover, the inside face flush fit of outer ring and overcoat.The outside face at cover boss position is processed with the groove of placing the O RunddichtringO in up and down, and the O RunddichtringO compresses with the outer ring of needle bearing.

The utlity model has following advantage and effect.

1, owing to the inner ring and the interior cover flush fit of needle bearing, therefore outer ring and overcoat flush fit, do not have relative motion between center shaft and the interior cover, become the friction of rolling between the needle bearing Internal and external cycle.Like this, not only not wearing and tearing of center shaft and interior inner room, and make the bearing circle operation very flexible, steady.

2, since in up and down the end of cover the O RunddichtringO is set and in down, overlap and overcoat between the boss position packing ring be set, prevent oil, water, dust immersion bush inside, therefore, the long service life of lining.

3, owing to leave spacing collar between the cover up and down, guaranteed compress center shaft and up and down in during cover, overcoat is out of shape or damage.

In a word, the utility model compared with the prior art, have wearing and tearing little, long service life; The gap is little, and bearing circle flexible operation, steady bears the strong advantage of vibration ability, is desirable motor turning arm, the replacement lining of center shaft.

The utility model in conjunction with the accompanying drawings, further specify as follows by an embodiment.

Fig. 1 is a structure cutaway view of the present utility model.

As shown in the figure, a kind of needle bearing bushing mainly is made of cover (1), following interior cover (2), overcoat (3), needle bearing (4), spacing collar (5) in last.Needle bearing (4) has two, cover (1) and overcoat (3), following interior overlapping between (2) and the overcoat (3) in being contained in respectively.Needle bearing (4) is made up of inner ring (4-1), outer ring (4-3) and needle roller (4-2), the outside face flush fit of inner ring of needle bearing (4-1) and interior cover (1,2), the inside face flush fit of the outer ring of needle bearing (4-2) and overcoat (3).The outside face at cover boss position is processed with groove in upper and lower, places O RunddichtringO (6), and the outer ring (4-2) of O RunddichtringO (6) and needle bearing contacts.In down, between the boss (3-1) of the boss (2-1) of cover (2) and overcoat (3) anti-attrition packing ring (7) is housed.Cover (1,2) and center axle head is by the nut screwing clamping on the guard shield up and down, and overcoat (3) is indeformable or do not damage in order to guarantee to compress, and overlapping between (1,2) in up and down has spacing collar (5).

Claims

1, the needle bearing bushing between a kind of motor turning arm and the center shaft, comprise interior cover, overcoat, it is characterized in that: interior cover is made up of upper and lower two parts, leave spacing collar (5) between the cover in upper and lower, between cover (2) and the overcoat (3) needle bearing (4) and O RunddichtringO (6) are housed respectively in overlapping under (1) and the overcoat (3) in going up, interior down overlapping between boss (2-1) and the overcoat boss (3-1) is equipped with anti-attrition packing ring (7).

2, according to the described needle bearing bushing of claim 1, it is characterized in that: the inner ring of needle bearing (4-1) respectively with the outside face flush fit of interior cover (1,2), the inside face flush fit of the outer ring of needle bearing (4-2) and overcoat (3).

3, according to the described needle bearing bushing of claim 1, it is characterized in that: the outside face of cover (1,2) is processed with the groove of placing the O RunddichtringO in upper and lower, and O RunddichtringO (6) compresses with the outer ring (4-2) of needle bearing.