CN206092707U - Deep groove ball bearing with long service life - Google Patents

Abstract

The utility model discloses a deep groove ball bearing with long service life, including outer lane, inner circle, steel ball and be used for separating and the holder of locking ball, be equipped with between the inward flange of the outward flange of inner circle and outer lane and make plausible annular sealing washer, characterized by, be equipped with the joint annular on the terminal surface of outer lane near inward flange department, the outside border checkpoint of sealing washer connects in the joint annular of outer lane, the inner circle outward flange department have one with axis vertically seal face, the internal surface of sealing washer is equipped with the first sealing ring strip of circular shape in corresponding seal face department, first sealing ring strip is laminated with the seal face mutually, the internal surface of sealing washer inlays and is equipped with the annular backing sheet of circle, the exerted surface of backing sheet is equipped with the sinter layer. The utility model discloses in can avoiding the impurity entering bearing in the external world effectively, avoid the leakage of the grease in the bearing to extend bearing's life, and the frictional resistance of reduction bearing during operation.

Description

A kind of deep groove ball bearing of long service life

Technical field

This utility model is related to a kind of ball bearing, and in particular to a kind of deep groove ball bearing with sealing structure.

Background technology

Deep groove ball bearing is a most common type in rolling bearing, and substantial radial load also can be held simultaneously By radial load and axial load., generally by an outer ring, an inner ring, a retainer and one group of interval are fixed for deep groove ball bearing Steel ball of the position in retainer is constituted, and the raceway groove of annular, steel ball are respectively equipped with the medial wall of outer ring and the lateral wall of inner ring Roll in raceway groove, so as to realize the rolling friction between inner ring and outer ring, the outer ring of deep groove ball bearing is generally fixed positioned on In one bearing mounting hole, the endoporus of inner ring is plugged with rotary shaft, so as to bear the radial load of rotary shaft, and reduces rotary shaft Frictional resistance during rotation.Deep groove ball bearing is divided to sealed and open two kinds of structures, open to refer to bearing without sealing knot Structure, sealed deep groove ball bearing can be prevented outside the lubricating oil in bearing by being respectively provided with a sealing ring in the both sides of bearing Overflow, while avoiding the dust and tiny granule foreign in the external world from entering.Due to bearing when in use outer ring be usually fixed it is motionless , and inner ring needs to rotate relative to outer ring, therefore, its sealing ring is typically connected to the inner side opening edge of outer ring by interference fit Edge, and then being coordinated using less gap between inner ring and sealing ring, so as to reduce bearing operationally inner ring and sealing ring it Between frictional resistance, while as far as possible improving its sealing property.But existing sealed deep groove ball bearing there are the following problems：By Interference fit cannot be accomplished between inner ring and sealing ring, therefore, the lubricating oil of Bearing inner still can be from inner ring and sealing ring Between gap at outside seepage, so as to shorten the service life of bearing.Particularly, sealing ring is generally using the material of one class of plastic cement Matter is made, and its dimensional accuracy is not high, therefore, when the hole size of sealing ring has deviation, it is easy to make inner ring and sealing ring Between form tighter interference fit, so as to cause frictional resistance during bearing working big, stitch brushless electricity-saving when which is used for work During machine, it is difficult to which realization is opened and stopped, and is unfavorable for speed governing.

Utility model content

The purpose of this utility model is in order to solve easy leakage fat existing for existing sealed deep groove ball bearing, to close The dimension precision requirement of seal is high, frictional resistance big problem when easily causing work because of the scale error of sealing ring, there is provided one The deep groove ball bearing of long service life is planted, frictional resistance when its good seal performance, long service life, work is little, it is adaptable to work Seam brushless energy-saving motor, is capable of achieving to open to stop, and facilitates speed governing.

To achieve these goals, this utility model is employed the following technical solutions：

A kind of deep groove ball bearing of long service life, including outer ring, inner ring, steel ball and for separating and locking ball Retainer, is provided with the sealing ring of annular between the outward flange of inner ring and the inward flange of outer ring, it is characterized in that, the outer ring is leaned on The end face of nearly inside edge is provided with clamping annular groove, and the outer side edges of the sealing ring are connected in the clamping annular groove of the outer ring, The inner ring has a seal face vertical with axis in outer edge, and the inner surface of the sealing ring is in correspondence sealed end The first sealing ring bar of circle is provided with face, the first sealing ring bar is fitted with seal face, the interior table of the sealing ring Face is embedded with the support chip of annular, and the surface that the support chip exposes is provided with sinter layer.

As deep groove ball bearing of the present utility model is when brushless energy-saving motor is stitched for work, its outer ring is to maintain static , rotation is the axle being plugged on inner ring, therefore, this utility model arranges clamping annular groove on outer ring, so as to by sealing ring It is connected in the clamping annular groove of outer ring, so, operationally, sealing ring is connected on fixed outer ring this utility model, So as to can ensure that the sealing between sealing ring and outer ring, it is to avoid lubricating oil is leaked from the gap of sealing ring Yu outer ring.It is existing Sealed deep groove ball bearing in, its sealing ring and inner ring are typically with what the gap of radial direction coordinated, interior during work to reduce Frictional resistance between circle and sealing ring, or using the interference fits of radial direction, to improve its sealing property.But gap coordinates Sealing it is low, easily produce leakage fat, and interference fits then easily cause because of the diametrical dimension error of sealing ring sealing ring with Contact pressure between inner ring produces fluctuation, so as to easily cause frictional resistance because of the cooperation tension between sealing ring and inner ring Greatly.And outer edge of this utility model at inner ring two ends is respectively provided with a seal face, correspondingly, in the interior table of sealing ring First sealing ring bar of the raised and seal face that reclines is set on face.That is, the sealing between sealing ring and inner ring be according to Contact sealing is realized by the elasticity of sealing ring, so, can not only effectively be completely cut off the impurity such as the dust in the external world and be entered in bearing, Avoid leaking at gap of the lubricating oil of Bearing inner from sealing ring with inner ring, significantly extend the use longevity of deep groove ball bearing Life, while the impact of the scale error to contact pressure of sealing ring effectively can be eliminated, making can be all the time between sealing ring and inner ring A rational contact pressure is kept, so that frictional resistance when deep groove ball bearing works remains at one and suitably sets Determine in scope, be easy to work seam brushless energy-saving motor to realize opening stopping, and facilitate speed governing.On the one hand support chip can play similar bone The effect of frame, it is ensured that sealing ring has good intensity and rigidity, while support chip surface has the sinter layer of a large amount of minute apertures With good capillarity, when the lubricating oil in bearing flow to the sealing ring contradicted with which by the outer surface of inner ring, Can be absorbed by the sinter layer on sealing ring surface and be sent to the ceramic honey comb ring on the outside of sealing ring, and be attracted to ceramic honey comb ring It is interior, not only improve and prevent leaking for lubricating oil, can make the lubricating oil in bearing that circulation is formed between inner ring, outer ring, steel ball again, Guarantee that Bearing inner has good lubricant effect.

Preferably, the inner surface of the sealing ring correspondence seal face at be additionally provided with circle the second sealing ring bar and 3rd sealing ring article, second sealing ring article, the 3rd sealing ring article are arranged with the first sealing ring article coaxial spaced, described The height of the first sealing ring article, the second sealing ring article and the 3rd sealing ring article is gradually reduced, the first sealing ring bar, second close The diameter of seal ring article and the 3rd sealing ring article progressively reduces.

As the inner surface of sealing ring is provided with the first sealing ring article, the second sealing ring article and the 3rd sealing ring article, therefore, it is close Seal can form multi-sealed effect.Additionally, the height of the first sealing ring article, the second sealing ring article and the 3rd sealing ring article is progressively Reduce, the diameter of the first sealing ring article, the second sealing ring article and the 3rd sealing ring article progressively reduces, therefore, sealing ring and inner ring Between only the first sealing ring bar shaped seal into real contact, and the second sealing ring article and the 3rd sealing ring article then form gap Sealing, therefore, frictional resistance during bearing working will not be increased, and the second sealing ring article and the 3rd sealing ring article then can hinder successively Only particulate contamination such as extraneous dust etc. enters the service life for effectively extending bearing in bearing.When bearing long-time work After work, the first sealing ring bar contacted with the seal face of inner ring is progressively worn and torn, now the second highly relatively low sealing ring bar Seal face is can contact, so as to form effectively sealing, it is to avoid leakage fat phenomenon occur.In the same manner, when the first sealing ring article and When two sealing rings article continue to wear up to the 3rd sealing ring article conflict seal face, sealing ring still can ensure that sealing effectiveness afterwards, from And greatly extend the Acceptable life of bearing.

Preferably, the cross section semicircular in shape of the first, second, third sealing ring bar, is conducive to reducing and sealing The contact area of end face, so as to reduce frictional resistance.

Preferably, the diameter of the outer surface of the inner ring outwards progressively reduces from the raceway groove both sides of inner ring, so that interior The outer surface of circle both sides is in taper seat, and the taper of the taper seat is between 0.2-0.3.

When deep groove ball bearing works, its inner ring high-speed rotation, the lubricating oil for being now attached to inner ring outer surface can be formed The centrifugal force of one radial direction, lubricating oil under the influence of centrifugal force can automatically along the raceway groove in the middle of the inward-facing circle of inclined circular cone Flowing, is on the one hand conducive to the lubrication of raceway groove and the steel ball rolled in raceway groove, while lubricating oil can be avoided in bearing working Leak.

Preferably, the periphery of the clamping annular groove is provided with integratedly radially inwardly extending snap ring, snap ring Medial surface is inclined inclined-plane, so that the width of the clamping annular groove is inwardly gradually reduced from opening, the sealing ring Outer side edges are provided with the clamping bulge loop for being adapted to and being connected in the clamping annular groove.

By the deformation of sealing ring, we can squeeze into the clamping bulge loop of sealing ring in clamping annular groove, and snap ring then may be used Avoid coming off for sealing ring.Particularly, the width of clamping annular groove is inwardly gradually reduced from opening, that is to say, that clamping annular groove It is inclined-plane near the side of cycle surface, therefore can makees to clamp-oning the clamping bulge loop in clamping annular groove and forming one and effectively extrude With so that it is guaranteed that the sealing effectiveness between sealing ring and outer ring.

Preferably, the inner ring is provided with closure gasket groove, the periphery of the closure gasket groove near outer peripheral end face The shading ring for integratedly extending radially outward is provided with, the medial surface of shading ring is inclined inclined-plane, so that the sealing The width of annular groove is inwardly gradually reduced from opening, and the isolation that the inner side edge of the sealing ring is provided with closure gasket groove is convex Ring, coordinates for gap between the isolation bulge loop and the closure gasket groove.

With the attachment structure of sealing ring and outer ring analogously, sealing of the screens in inner ring is set on the inner side edge of sealing ring Isolation bulge loop in annular groove, so as to the sealing structure of U-shaped can be formed between sealing ring and inner ring, is conducive to improving its sealing Can, and avoid coming off for sealing ring.And isolate, therefore bearing will not be increased Frictional resistance operationally.

Preferably, the outer ledge of the shading ring is provided with the dustproof groove of annular, one on the inner side edge of the sealing ring It is provided with the dust ring in dustproof groove, so as to the labyrinth sealing of multiple complications can be formed between sealing ring and inner ring body Structure, further improves the sealing effectiveness of sealing ring and inner ring junction.

Therefore, this utility model has the advantages that：The impurity that the external world can be effectively prevented from is entered in bearing, it is to avoid The leakage of the oils and fatss in bearing, so as to extend the service life of bearing, and frictional resistance when reducing bearing working.

Description of the drawings

Fig. 1 is a kind of structural representation of the present utility model.

Fig. 2 is the enlarged drawing in Fig. 1 at A.

In figure：1st, outer ring 11, clamping annular groove 12, snap ring 13, oil storage annular groove 14, ceramic honey comb ring 2, inner ring 21, Seal face 22, taper seat 23, closure gasket groove 24, shading ring 241, dustproof groove 3, steel ball 4, retainer 5, sealing ring 51st, the first sealing ring article 52, the second sealing ring article 53, the 3rd sealing ring article 54, clamping bulge loop 55, isolation bulge loop 56, anti- Konisphere 57, support chip 571, sinter layer 6, leakage-proof ring.

Specific embodiment

This utility model is further described with specific embodiment below in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, a kind of deep groove ball bearing of long service life, stitches brushless energy-saving motor for work, concrete to wrap Include outer ring 1, inner ring 2, some steel balls 3 and the retainer 4 for separating and positioning each steel ball, inner ring two ends outward flange and The sealing ring 5 of annular is respectively provided between the corresponding inward flange in outer ring, sealing ring can be made using plastic material, both facilitates and add Work, can make it have certain elasticity again, to facilitate installation.Outer ring is arranging clamping annular groove on the end face of inside edge 11, the outer side edges of sealing ring are connected in the clamping annular groove of outer ring, so that sealing ring forms interference fit with outer ring, to guarantee Its sealing property.Additionally, inner ring arranges the seal face 21 of an annular vertical with axis in outer edge, sealing ring then exists Inner surface arranges the first circular sealing ring bar 51 with seal face corresponding position, and by the elastic force of sealing ring, raised first is close Seal ring bar is fitted with seal face, so as to realize the sealing between sealing ring and inner ring, now near sealing ring on sealing ring There is slight jack-up on the inside of bar, that is to say, that the axial cross section of sealing ring is in the low cone of middle high rim.We can lead to Cross the height of reasonable design the first sealing ring bar, to control the contact pressure between sealing ring bar and seal face, so as to While guaranteeing reliable sealing effectiveness, the frictional resistance between sealing ring and inner ring is reduced as far as possible.As sealing ring is in manufacture When the first sealing ring bar height absolute error value it is very little, therefore, will not be to the contact between sealing ring bar and seal face Pressure produces impact, so as to can ensure that each sealed deep groove ball bearing has stable sealing effectiveness and frictional resistance, makes close Envelope formula deep groove ball bearing keeps stable quality.

In addition, we can arrange the second circular sealing ring article 52 and the 3rd at sealing ring inner surface correspondence seal face Sealing ring bar 53, makes sealing ring form mazy multi-sealed effect.First sealing ring article, the second sealing ring article and the 3rd Sealing ring bar coaxially arranged for interval from outside to inside on sealing ring, that is to say, that the first sealing ring bar, the second sealing ring bar and The diameter of the 3rd sealing ring article progressively reduces, and the height of the first sealing ring article, the second sealing ring article and the 3rd sealing ring article Gradually reduce, it is thin so as to have between the second sealing ring article and seal face and between the 3rd sealing ring article and seal face Micro- gap.Second sealing ring article and the 3rd sealing ring article then can prevent particulate contamination such as the dust in the external world etc. to enter axle successively In holding, effectively extend the service life of bearing.After bearing works long hours, first contacted with the seal face of inner ring is close Seal ring bar is progressively worn and torn, and contact pressure between the first sealing ring bar and seal face reduces, and now highly relatively low second Sealing ring bar contacts seal face, effectively seals so as to form two roads, can continue to the sealing effectiveness of bearing, and will not Increase frictional resistance.In the same manner, when the first sealing ring article and the second sealing ring article continue to wear up to the conflict sealing of the 3rd sealing ring article During end face, on sealing ring, each sealing ring bar is reduced with the contact pressure of seal face, now first, second, third sealing Ring bar contacts seal face simultaneously, effectively seals so as to form three roads, thus can continue to guarantee sealing effectiveness, so as to greatly Extend the Acceptable life of bearing, and total frictional resistance will not be increased.It should be noted that we can be by first, 2nd, semicircle is made in the cross section of the 3rd sealing ring article, so as to reduce first, second, third sealing ring bar with seal face Contact area, is conducive to reducing frictional resistance.

It is known that in deep groove ball bearing operationally, its inner ring high-speed rotation, now the lubricating oil meeting of inner ring outer surface Produce larger centrifugal force and flow to both sides, wherein can be because of the effect of centrifugal force to the lubricating oil of sealing ring side flowing Certain pressure is formed, and fat phenomenon is leaked so as to easily produce between sealing ring and inner ring.For this purpose, we can make the appearance of inner ring The diameter in face outwards progressively reduces from the raceway groove both sides of inner ring, so that the outer surface of inner ring both sides forms taper seat 22, the circle Between 0.2-0.3, its preferred value is 0.25 to the taper of the conical surface.So, when deep groove ball bearing works, inner ring high-speed rotation, The lubricating oil for being now attached to inner ring outer surface can form the centrifugal force of a radial direction, and lubricating oil under the influence of centrifugal force can be certainly Move along the channel current flows in the middle of the inward-facing circle of inclined circular cone, so that the steel ball rolled in raceway groove and raceway groove is obtained fully Lubrication, while lubricating oil leaking in bearing working can be avoided.

In order to improve the reliability that sealing ring is connected with outer ring, integratedly edge is set on the periphery of the clamping annular groove of outer ring The snap ring 12 for extending radially inwardly, the medial surface of snap ring are inclined inclined-plane so that the width of clamping annular groove from opening to Inside it is gradually reduced.Correspondingly, the clamping bulge loop being adapted to and be connected in clamping annular groove is integrally provided in the outer side edges of sealing ring 54.By the deformation of sealing ring, we can squeeze into the clamping bulge loop of sealing ring in clamping annular groove, make sealing ring and outer ring it Between realize being reliably connected.Particularly, the width of clamping annular groove is inwardly gradually reduced from opening, that is to say, that clamping annular groove is leaned on The side of nearly cycle surface is inclined-plane, therefore can be made to clamp-oning the clamping bulge loop in clamping annular groove and forming one and effectively extrude With so that it is guaranteed that the sealing effectiveness between sealing ring and outer ring.In addition, we can also be in clamping annular groove with sealing ring interior table The oil storage annular groove 13 of circle is set on the side of face laminating, and a ceramic honey comb ring 14 is embedded in oil storage annular groove.Due to Gather on ceramic honey comb ring trickle aperture, thus with good capillary effect, can fully absorb the lubricating oil in bearing, The lubricating oil for avoiding Bearing inner excessive is produced and is leaked.When deep groove ball bearing operationally then outwards discharges lubricating oil step by step, Guarantee the lubricant effect of deep groove ball bearing.

It is understood that we can also arrange closure gasket groove 23, sealing ring on close outer peripheral end face on inner ring The shading ring 24 for integratedly extending radially outward is set on the periphery of groove, and the medial surface of shading ring is inclined inclined-plane, from And the closure gasket groove of a U-shaped is formed, and the width of closure gasket groove is inwardly gradually reduced from opening, is conducive to improving which close Sealing property, and avoid coming off for sealing ring.Correspondingly, be integrally provided on the inner side edge of sealing ring in closure gasket groove every From bulge loop 55, it is gap cooperation between isolation bulge loop and closure gasket groove, thus deep groove ball bearing rubbing operationally will not be increased Wipe resistance.Additionally, the outer ledge of shading ring can arrange the dustproof groove 241 of annular, correspondingly, one on the inner side edge of sealing ring Body ground arranges the dust ring 56 in dustproof groove, so as to the labyrinth type that multiple complications can be formed between sealing ring and inner ring is close Seal structure, further improves the sealing effectiveness of sealing ring and inner ring junction.

Further, we can also be embedded the support 57 of a piece of annular being made of stainless steel in the inner surface of sealing ring Piece, support chip can play the effect of similar skeleton, it is ensured that sealing ring has good intensity and rigidity；Expose in support chip simultaneously Surface sinter the sinter layer 571 of one layer of anaerobic copper powder, the uniform tiny holes for gathering that sinter layer is internally formed have good Capillarity, when the lubricating oil in deep groove ball bearing flow to the sealing ring contradicted with which by the outer surface of inner ring, can Absorbed by the sinter layer on sealing ring surface and be sent to the ceramic honey comb ring on the outside of sealing ring, and be attracted to ceramic honey comb ring It is interior, be conducive to preventing leaking for lubricating oil, the lubricating oil in deep groove ball bearing can form again between inner ring, outer ring, steel ball Circulation, it is ensured that there is inside deep groove ball bearing good lubricant effect.

Finally, the leakage-proof ring 6 using annular made by glass fibre membrane can be set on the seal face of inner ring, leakage-proof ring There is between inside edge and sealing ring gap, leakage-proof ring is inclined from inside edge to outer ledge to sealing ring side, so as to The outer ledge of leakage-proof ring is made to abut on the inner surface of sealing ring.Due to abutting in sealing ring on the outside of inclined leakage-proof ring On inner surface, therefore the lubricating oil of inner ring outer surface can be prevented from directly flowing on sealing ring inner surface, be conducive to improving zanjon Ball bearing leak preventing effect under static state.When deep groove ball bearing works, inner ring drives leakage-proof ring high-speed rotation and produces The centrifugal force of radial direction, now centrifugal force make inclined leakage-proof ring produce it is slight ajust so that the outer ledge of leakage-proof ring with The inner surface of sealing ring separates and produces trickle gap, so as to increase bearing frictional resistance operationally, while not Leakage-proof ring can be made to produce abrasion.In addition, there is splendid capillarity using leakage-proof ring made by glass fibre membrane, therefore, it is deep When ditch ball bearing works, the lubricating oil on inner ring fully can be adsorbed on leakage-proof ring, and make on leakage-proof ring by centrifugal force Lubricating oil concentrate on the outer ledge away from seal face；When deep groove ball bearing quits work, the outer ledge of leakage-proof ring Again abut on the inner surface of sealing ring, so as to burning that can be by lubricating oil of the absorption on leakage-proof ring by sealing ring inner surface Knot layer permeates and is adsorbed onto on ceramic honey comb ring, to be effectively prevented from leaking for lubricating oil.

Claims (1)

1. a kind of deep groove ball bearing of long service life, including outer ring, inner ring, steel ball and the guarantor for separating simultaneously locking ball Frame is held, the sealing ring of annular is provided between the outward flange of inner ring and the inward flange of outer ring, be it is characterized in that, the outer ring is close The end face of inside edge is provided with clamping annular groove, and the outer side edges of the sealing ring are connected in the clamping annular groove of the outer ring, institute State inner ring and there is a seal face vertical with axis in outer edge, the inner surface of the sealing ring is in correspondence seal face Place is provided with the first sealing ring bar of circle, and the first sealing ring bar is fitted with seal face, the inner surface of the sealing ring The support chip of annular is embedded with, the surface that the support chip exposes is provided with sinter layer, and the inner ring is near outer peripheral end face Be provided with closure gasket groove, the periphery of the closure gasket groove is provided with the shading ring for integratedly extending radially outward, it is described every The dustproof groove of annular is provided with from the outer ledge of ring, integrally provided with anti-in dustproof groove on the inner side edge of the sealing ring Konisphere.