Steering ball end
Technical field
The invention belongs to mechanical engineering technical field, relate to a kind of motor turning parts, particularly a kind of steering ball end.
Background technique
Steering ball end is one of critical component of vehicle steering mechanism, but steering ball end ubiquity quick abrasion, the disadvantage that working life is short.When it was worn down to a certain degree, bulb occurred loosening, and steering equipment's frictional noise increases, and caused that easily steering wheel shake and vehicle wave, and influenced normal driving, just needed this moment to change steering ball end, had so just increased the auto repair cost.For example, Chinese patent literature once disclosed a kind of automobile-used steering ball end [China Patent No.: ZL200620045931.4; Notice of authorization number: CN200961623Y], ball stud that comprises spherical shell, is arranged on bulb in the spherical shell, is connected as a single entity with bulb and the shrouding that is arranged on the spherical shell bottom are provided with ball seat in the spherical shell, and ball-head cover is embedded in the ball seat, is provided with elastic component between ball seat and the shrouding.Loosening phenomenon occurs though this structure may overcome bulb, but exist bigger defective.Owing to be the sphere contact between bulb in this programme and the ball seat, its area of contact is big, when bulb forwards to, surface of contact can not obtain effective lubricating, make that friction becomes big between bulb and the ball seat, so it is dumb just to cause bulb and ball seat public security to forward to, the wearing and tearing quantitative change is big, and reduce working life greatly.
Summary of the invention
The objective of the invention is to have the problems referred to above, proposed the surface of contact high lubricating effect between a kind of bulb and lining upper body and the lining lower body at existing technology, feasible more not easy to wear, the steering ball end of long service life.
Purpose of the present invention can realize by following technical proposal: a kind of steering ball end, comprise spherical shell and ball stud, one end of this ball stud is positioned at outside the spherical shell, the other end is positioned at spherical shell, end in spherical shell has spherical bulb body, be provided with the lining lower body of carrying bulb body in the spherical shell, it is characterized in that, described lining lower body is separated spherical shell and is last bunker and the following bunker that can store lubricant oil, above-mentioned bulb body is arranged in the bunker, in following bunker, be provided with its two ends and act on spring on lining lower body and the spherical shell respectively, between last bunker and following bunker, be provided with and allow the following lubricant oil of bunker enter into oil inlet passage between bulb body and the lining lower body, on spherical shell, be provided with lubricant oil is circulated into oil-feed structure in the bunker down.
The gap that the wearing and tearing back produces between bulb body of this steering ball end and the lining lower body can put in place by spring compensation automatically.When driving a vehicle rugged road surface, because the pressure of car body moment is greater than the drag of spring, the position of bulb body and lining lower body moves down, the space of following bunker diminishes, it is big that the space of last bunker becomes, and is injected in the bunker by oil inlet passage last bunker is carried out repairing so stay down lubricant oil in the bunker.As above the lubricant oil in the bunker is full, and when the bulb body position resetted, pressure squeezed back bunker down to it again.Do not go out lubricant oil by the oil-feed structure to what the housing inner chamber carried out annotating for the first time lubricant oil and later stage.
In above-mentioned steering ball end, described oil inlet passage comprises the through hole of bunker and following bunker in the connection that is arranged on lining lower body middle part and is arranged on several breach of lining lower body periphery.One port of through hole is towards the bulb body, and the another port is towards following bunker, and the wheel lubricating oil can rely on gravity to pass through between bulb body and lining lower body; Lubricant oil also can enter bunker from breach.
In above-mentioned steering ball end, described going up in the bunker is provided with the lining upper body that is complementary with the bulb body, above-mentioned bulb body is arranged between lining upper body and the lining lower body, is provided with groove on the outer surface of described bulb body, and this groove is through lining upper body and lining lower body.Leave certain clearance between lining upper body and the lining lower body, this gap is the spatial position that wearing and tearing compensate afterwards automatically, and this gap and bulb body are formed upward bunker simultaneously.Groove on the bulb external surface promptly passes lining upper body and lining lower body, also pass bunker, when bulb is in use swung, groove takes lubricant oil on the surface of contact of lining upper body and lining lower body and bulb body automatically, thereby produce lubricated, reduce the wearing and tearing of bulb body and lining upper body and lining lower body, increase the service life.
In above-mentioned steering ball end, described groove ringwise, quantity is two, and two grooves intersect.The groove of annular centers on and runs through the surface of whole bulb body, thereby increases the oil mass of sending to surface of contact greatly.
In above-mentioned steering ball end, described oil-feed structure comprises the oil intake nozzle that is connected with following bunker, is provided with one-way valve in described oil intake nozzle.Because one-way valve has check configuration, so can prevent automatically that lubricant oil is excessive in the housing; This structure is a kind of preferred version.The oil-feed structure can also realize by another kind of scheme, connect ordinary ball valve on oil intake nozzle, opens ball valve during lubricating oil filling in housing, and all the other times all close ball valve.
In above-mentioned steering ball end, the centre of sphere of bulb body is departed from the annular center of circle of described groove, and the center of circle of groove is positioned at the Lower Half of the bulb body centre of sphere.
In above-mentioned steering ball end, described lining lower body and lining upper body all adopt metallic material to make.Metallic material is solid more wear-resisting than plastics, thereby has improved working life greatly.
In above-mentioned steering ball end, described lining upper body is the ball impression face that mates with the bulb body with the face that the lining lower body contacts with the bulb body.Owing on the bulb body, be provided with annular groove, groove is through having lubricant oil all the time in surface of contact and the groove, so when the bulb body rotates, groove is swung on surface of contact, lubricant oil is just attached on the ball impression face simultaneously, it is lubricated to make that its surface of contact can access all the time, makes to forward more flexible, longer service life between bulb body and lining upper body and the lining lower body.Simultaneously the area of ball impression face is big, make forward between bulb body and lining upper body and the lining lower body more stable.
In above-mentioned steering ball end, described spherical shell is tubular, is fixed with base plate with housing seal at the one end, and above-mentioned spring one end withstands on the base plate the other end and withstands on the lining lower body.Make the lining lower body compress the bulb body by spring, make lining upper body and bulb body closely cooperate; Wear extent can be regulated automatically by spring between bulb body and lining upper body and the lining lower body simultaneously, makes between bulb body and lining upper body and the lining lower body to be in the state of closely cooperating all the time, avoids the bulb body loosening phenomenon to occur.
In above-mentioned steering ball end, described oil intake nozzle is arranged on the center of base plate.Lubricant oil is solid oils such as butter, puts at the center to make lubricant oil by diffusion around the middle mind-set, prevents that lubricant oil from just entering into bunker when bunker is not filled down.
Compared with prior art, the bulb body of this steering ball end is provided with the groove that two annulars intersect, groove is through lining upper body and lining lower body, in spherical shell, be filled with lubricant oil, when the bulb body is rotating, the surface of contact of bulb body and lining upper body and lining lower body can access well lubricated, so this steering ball end has high lubricating effect, bulb body slow-roll stabilization, noise are little, the advantage of long service life.
Description of drawings
Fig. 1 is the sectional structure schematic representation of this steering ball end.
Fig. 2 is the bulb body of this steering ball end and the perspective view of ball stud.
Among the figure, 1, spherical shell; 1a, protruding circle; 1b, retaining edge; 2, lining lower body; 21, through hole; 22, spring seat; 23, breach; 3, base plate; 4, bulb body; 41, groove; 5, lining upper body; 6, ball stud; 7, dust-proof cover; 8, garter spring; 9, collar; 10, spring; 11, oil intake nozzle; 12, following bunker; 13, go up bunker; 14, ball impression face.
Embodiment
Below be specific embodiments of the invention and in conjunction with the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As depicted in figs. 1 and 2, this steering ball end comprises spherical shell 1, ball stud 6, bulb body 4, lining upper body 5, lining lower body 2, base plate 3, spring 10.
Specifically, spherical shell 1 is provided with base plate 3, spring 10, lining lower body 2, bulb body 4, lining upper body 5 in a tubular form successively to the top from the bottom in spherical shell 1.The top port inwall of spherical shell 1 has protruding circle 1a, the end face of lining upper body 5 is resisted against on the protruding circle 1a, the bottom inner port of spherical shell 1 goes out to have recessed shoulder, after base plate 3 is arranged on the recessed shoulder, base plate 3 is fixed on the spherical shell 1 along 1b thereby the formation retaining is inwardly pushed in the bottom of spherical shell 1.Above-mentioned spring 10 is a compression helical spring 10, its two ends act on respectively on lining lower body 2 and the base plate 3, above-mentioned bulb body 4 makes lining lower body 2 compress bulb by spring 10 between lining lower body 2 and lining upper body 5, and lining upper body 5 and bulb are closely cooperated; Wear extent can be regulated automatically by spring 10 between bulb and lining upper body 5 and the lining lower body 2 simultaneously, makes between bulb and lining upper body 5 and the lining lower body 2 to be in the state of closely cooperating all the time, avoids bulb loosening phenomenon to occur.
One end of ball stud 6 penetrates that spherical shell 1 links to each other with bulb body 4 and is integral structure, and the other end of ball stud 6 is a free end.Lining upper body 5 ringwise, the internal surface of lining upper body 5 has the ball impression face 14 that bulb body 4 matches, bulb body 4 is end faces that end face is higher than lining upper body 5, so have the space that ball stud 6 is connected with bulb body 4 and ball stud 6 rotates.
The surface of bulb body 4 has 41, two grooves 41 of two annular grooves and intersects, and the centre of sphere of bulb is departed from the annular center of circle of groove 41, and the center of circle of groove 41 is positioned at the Lower Half of the bulb centre of sphere.Have between the inwall of bulb body 4 surfaces and spherical shell 1 bigger gap and by lining upper body 5 and lining lower body 2 enclose constitute go up 13, two grooves 41 of bunker all through lining upper body 5 and bulb body 4 surface of contact, lining lower body 2 with bulb body 4 surface of contact, go up bunker 13.Above-mentioned base plate 3, lining lower body 2 and spherical shell 1 form bunker 12 down, are evenly equipped with the breach 23 of bunker 12 and last bunker 13 under four connections at the edge of lining lower body 2.All be filled with lubricant oil at following bunker 12 and last bunker 13, this lubricant oil is butter.Be provided with oil intake nozzle 11 on base plate 3, this oil intake nozzle 11 is an one-way valve, oil intake nozzle 11 is set is when safeguarding for convenience make-up oils in the downward bunker 12, and one-way valve structures has been avoided oily excessive in time bunker 12.
The bottom of bulb body 4 is a circular flat, and two grooves 41 pass along planar side and along the planar central symmetry.Be provided with through hole 21 at the middle part of lining lower body 2, bunker 12 communicates under the end of through hole 21, the other end with towards the bottom surface of bulb body 4.Have the ball impression face 14 that bulb body 4 matches on lining lower body 2 end faces, have the spring seat 22 that is used to prevent spring 10 slips at the middle part of lining lower body 2 bottom surfaces, through hole 21 passes spring seat 22.
The bulb body 4 of this steering ball end is provided with the groove 41 that two annulars intersect, groove 41 is through having lubricant oil all the time in surface of contact and the groove 41, so when bulb body 4 rotates, groove 41 is swung on surface of contact, lubricant oil is just attached on the ball impression face 14 simultaneously, it is lubricated to make that its surface of contact can access all the time, makes to forward more flexible, longer service life between bulb body 4 and lining upper body 5 and the lining lower body 2.Lining upper body 5 and lining lower body 2 all adopt metallic material to make, bulb body 4 with between the two surface of contact be that sphere contacts, rotate more steady and more wear-resisting so enable bulb body 4.
For the lubricant oil that reduces in the bulb is polluted, prevent that impurity from entering the dust-proof cover 7 in the spherical shell 1 so be provided with in the outside of spherical shell 1 and ball stud 6.The lower end of dust-proof cover 7 is fixed on by garter spring 8 on the outer wall at spherical shell 1 top, and the upper end of dust-proof cover 7 is provided with and is used to prevent the upper end-hole distortion and makes the upper end-hole inwall only be attached to collar 9 on the ball stud 6.
This steering ball end is installed in the automobile steering mechanism, when reaching rugged road surface, because the pressure of car body moment is greater than the drag of spring 10, the position of bulb body 4 and lining lower body 2 moves down, the space of following bunker 12 diminishes, it is big that the space of last bunker 13 becomes, and is injected in the bunker 13 by oil inlet passage last bunker 13 is carried out repairing so stay down lubricant oil in the bunker 12.As above the lubricant oil in the bunker 13 is full, and when bulb body 4 positions resetted, pressure squeezed it again and is back to down in the bunker 12.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used spherical shell 1 morely; Protruding circle 1a; Retaining is along 1b; Lining lower body 2; Through hole 21; Spring seat 22; Breach 23; Base plate 3; Bulb body 4; Groove 41; Lining upper body 5; Ball stud 6; Dust-proof cover 7; Garter spring 8; Collar 9; Spring 10; Oil intake nozzle 11; Following bunker 12; Last bunker 13; Ball impression face 14 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.