CN209180240U - A kind of sealing bearing - Google Patents

Abstract

The utility model discloses a kind of sealing bearings, it includes outer ring, inner ring, retainer, roller is installed on retainer, seal assembly is also equipped between outer ring inner wall and interior ring outer wall, seal assembly includes hard skeleton and the soft seal that is attached on hard skeleton, soft seal is towards retainer side, through-hole is offered on the hard skeleton, soft seal is equipped with the choking portion in insertion through-hole, the choking portion is equipped with notch, notch is embedded in the end face extended partially into soft seal and retainer in through-hole on soft seal, the notch is inclined to set, the retainer is equipped with oilhole corresponding with the cut end.The bearing of the utility model has the advantages that durability, can be with make-up oil.

Description

A kind of sealing bearing

Technical field

The utility model belongs to technical field of bearings, especially a kind of sealing bearing.

Background technique

Bearing in the prior art is generally made of outer ring, inner ring, steel ball and retainer.Steel ball is installed in retainer, Retainer is installed between inside and outside circle, and the inside and outside end face of steel ball is located in the raceway of inner ring and outer ring.Existing bearing Retainer be usually riveted by upper and lower half retainer of two panels, be equipped with hemispheric pocket on upper and lower half retainer of two panels Hole, steel ball are installed in pocket hole, and sealing ring is also equipped between inner ring and outer ring, play dustproof effect, but are sealed bearing and used After a period of time, due to the loss of base oil in lubricant grease, when the lubricating requirement of bearing is unable to satisfy workplace demand, then Bearing is easy fretting wear, reduces the service life.

Utility model content

A kind of in order to overcome the deficiencies of the prior art, the utility model provides sealing bearing, the bearing have durability, Can be with make-up oil the advantages of.

To achieve the goals above, the technical solution adopted in the utility model is: a kind of sealing bearing, including outer ring, interior It encloses, retainer, roller is installed on retainer, seal assembly is also equipped between outer ring inner wall and interior ring outer wall, feature exists In the soft seal that: the seal assembly includes hard skeleton and is attached on hard skeleton, soft seal is towards retainer one Side offers through-hole on the hard skeleton, and soft seal is equipped with the choking portion in insertion through-hole, which is equipped with and cuts Mouthful, notch is embedded in the end face extended partially into soft seal and retainer in through-hole on soft seal, which is in It is obliquely installed, the retainer is equipped with oilhole corresponding with the cut end.

In above structure, it is tightly connected between outer ring and inner ring by seal assembly, and supported by hard skeleton, structure Stronger stabilization, soft seal are embedded in the through-hole of hard skeleton by choking portion, and choking portion is arranged long notch and is used for for mending Fill lubricating oil use, the lubricating oil of supplement by notch connection to retainer oilhole, into retainer and roller clearance, simultaneously First the notch keeps oil refill state to form oil film seal, second the hard skeleton on the outside of choking portion is to notch both ends of the surface Close contact have active force, allow to keep good sealing function, while not interfering make-up oil again.

Further, the hard skeleton includes support frame, and the both ends of support frame are respectively embedded into the neutralization of outer ring inboard wall groove In inner ring unit with grooves in outer wall, it is equipped with the through-hole accommodated for choking portion in the middle part of support frame, is dug to form 2 in the middle part of the choking portion Boss is blocked, the outer sheath of insertion in the open slot between 2 blocking boss, extending out set has driving blocking boss towards cut-out direction What is squeezed extends out trend power.

In above structure, hard skeleton is made of support frame and outer sheath, and support frame plays structural support effect, outer sheath Then there is squeezing action power that the notch end face of choking portion is made to keep being in close contact choking portion.

Further, the outer sheath includes U-shaped body, and the opening inner wall of U-shaped body has internal screw thread, U-shaped body Open end has been threadedly engaged locking plug, and locking plug periphery includes thread segment and lozenges section, and lozenges section is located at outside, lozenges The extruding force that the opening inner wall of section and U-shaped body cooperatively forms extends out trend power described in constituting.

In above structure, outer sheath is made of opening body with locking plug, is realized and is extended out by the cooperation driving of lozenges Set extends out to which squeezing action is in choking portion.

Further, the outer sheath includes hollow sleeve, and spring, the axis of spring and outer ring are equipped in hollow sleeve Radial end face is arranged in parallel, and both ends of the spring extends out trend power described in the stress structure of U-shaped body opening inner wall two sides.

In above structure, outer sheath is made of hollow sleeve and spring, is extruded in hollow sleeve by the elastic force of spring Two sides make that outer sheath is enclosed outwardly and inner ring two sides extend out and then act in choking portion.

Further, the soft seal has inner concave arc surface, soft seal choking portion direction towards the end face of retainer The side wall of outer ring is inclined to set.

In above structure, soft seal by inner concave arc surface and retainer outer wall formed it is good contact, choking portion is inclined Inclined-plane is abutted with support frame corresponding end surface, and when its other end forced compression, which has inclined reaction simultaneously Power, which acts on notch, makes two end faces of notch keep tightening contact.

The utility model is further described with reference to the accompanying drawing.

Detailed description of the invention

Attached drawing 1 is the utility model specific embodiment structural schematic diagram；

Attached drawing 2 is the utility model specific embodiment part A enlarged drawing；

Attached drawing 3 is the utility model specific embodiment seal component architecture schematic diagram；

Outer ring 1, inner ring 2, retainer 3, oilhole 31, roller 4, hard skeleton 5, support frame 51, L-type end 511, soft seal Part 6, inner concave arc surface 61, choking portion 62, notch 63, inclined surface 64, blocking boss 621, outer sheath 7, U-shaped body 71, locking plug 72, thread segment 721, lozenges 722.

Specific embodiment

Specific embodiment of the utility model is sealing bearing as shown in Figs. 1-3 comprising outer ring 1, inner ring 2, retainer 3, roller 4 is installed on retainer 3, is also equipped with seal assembly between 2 outer wall of 1 inner wall of outer ring and inner ring, seal assembly includes Hard skeleton 5 and the soft seal 6 being attached on hard skeleton 5, soft seal 6 have indent towards 3 one side end face of retainer Cambered surface 61, soft seal 6 form good contact with 3 outer wall of retainer by inner concave arc surface 61.

Hard skeleton 5 includes support frame 51, and the both ends of support frame 51 are extended with L-type end 511, are divided by L-type end 511 Through-hole Qian Ru not be equipped in the middle part of support frame 51 in 1 inboard wall groove of outer ring and in 2 unit with grooves in outer wall of inner ring, soft seal 6 is equipped with embedding Enter the choking portion 62 in through-hole, the choking portion 62 be equipped with notch 63, notch 63 by choking portion 62 extend partially into soft seal 6 with The end face that retainer 3 cooperates, the notch 63 are inclined to set, and retainer 3 is equipped with oilhole 31 corresponding with 63 end of notch, The lubricating oil of supplement can enter bearing by notch 63 and be flowed into the gap of roller 4 and retainer 3 by retainer 3, cut Being obliquely installed for mouth 63 is conducive to its sealing function, while oil refill can also form oil film seal in notch 63, and hard Matter skeleton 5 then plays the role of supporting sealing member, guarantees its structural strength.Side of the choking portion 62 towards outer ring 1 on soft seal 6 Wall is inclined to set, and the inclined surface 64 of choking portion 62 is abutted with 51 corresponding end surface of support frame, when its other end forced compression, The inclined surface 64 has inclined reaction force acts in making two equal stress in end face of notch 63 opposite on notch 63 simultaneously It is close, it keeps tightening contact.

The middle part of choking portion 62 of above-mentioned soft seal 6 dug to be formed 2 blocking boss, 621,2 blocking boss 621 it Between open slot in the outer sheath 7 of insertion, outer sheath 7 there is driving to block boss 621 extend out trend towards what 63 direction of notch squeezed Power is extruded on blocking boss 621 by extending out for outer sheath 7, so that the angular cutouts 63 of blocking boss 621 keep closely connecing Touching state guarantees good sealing effect.

The first structure of outer sheath 7 is as shown in Fig. 3, and outer sheath 7 includes U-shaped body 71, the opening of U-shaped body 71 Inner wall has internal screw thread, and the open end of U-shaped body 71 has been threadedly engaged locking plug 72, and 72 periphery of locking plug includes thread segment 721 With 722 sections of lozenges, 722 sections of lozenges are located at outside, what the opening inner wall of 722 sections of lozenges and U-shaped body 71 cooperatively formed Extruding force composition extends out trend power, and outer sheath 7 is made of opening body and locking plug 72, is driven by the cooperation of lozenges 722 Realize that outer sheath 7 extends out to which squeezing action is in choking portion 62.

In addition, the structure of outer sheath 7 can also be made of hollow sleeve and spring, it is extruded in by the elastic force of spring Empty set body two sides extend out outer sheath 7 towards outer ring 1 and 2 two sides of inner ring and then act in choking portion 62；Specifically, such as extending out Set 7 includes hollow sleeve, is equipped with spring in hollow sleeve, axis and 1 radial end face of outer ring of spring are arranged in parallel, spring two The stress structure to U-shaped body 71 opening inner wall two sides is held to extend out trend power.

The utility model is not limited to above-mentioned specific embodiment, and persons skilled in the art are according to the utility model public affairs The content opened can be implemented the utility model or all using the utility model using other a variety of specific embodiments Design structure and thinking, do simple change or change, both fall within the protection scope of the utility model.

Claims (5)

1. a kind of sealing bearing, including outer ring, inner ring, retainer, roller, outer ring inner wall and interior ring outer wall are installed on retainer Between be also equipped with seal assembly, it is characterised in that: the seal assembly includes hard skeleton and being attached on hard skeleton Soft seal, soft seal offer through-hole, it is logical that soft seal is equipped with insertion towards retainer side on the hard skeleton Choking portion in hole, the choking portion are equipped with notch, and notch extends partially into soft seal by being embedded in through-hole on soft seal With the end face of retainer cooperation, which is inclined to set, and the retainer is equipped with oilhole corresponding with the cut end.

2. sealing bearing according to claim 1, it is characterised in that: the hard skeleton includes support frame, support frame Both ends are respectively embedded into the inboard wall groove of outer ring in inner ring unit with grooves in outer wall, are led in the middle part of support frame equipped with what is accommodated for choking portion Hole, the choking portion middle part are dug to form 2 blocking boss, outer sheath are embedded in the open slot between 2 blocking boss, outside There is sheath driving blocking boss to extend out trend power towards what cut-out direction squeezed.

3. sealing bearing according to claim 2, it is characterised in that: the outer sheath includes U-shaped body, U-shaped body The inner wall that is open has internal screw thread, and the open end of U-shaped body has been threadedly engaged locking plug, and locking plug periphery includes thread segment and wedge shape Face section, lozenges section are located at outside, extend out described in the extruding force composition that the opening inner wall of lozenges section and U-shaped body cooperatively forms Trend power.

4. sealing bearing according to claim 2, it is characterised in that: the outer sheath includes hollow sleeve, hollow sleeve In spring is installed, axis and the outer ring radial end face of spring be arranged in parallel, and both ends of the spring is to U-shaped body opening inner wall two sides Trend power is extended out described in stress structure.

5. sealing bearing according to any one of claims 1-4, it is characterised in that: the soft seal is towards retainer End face there is inner concave arc surface, the side wall of soft seal choking portion towards outer ring is inclined to set.