CN208595161U - Closed type bearing-hub assembly - Google Patents

Abstract

The utility model relates to a kind of closed type bearing-hub assemblies, it is wherein respectively equipped between bearing outer ring left end and bearing inner race left end outer, interior sealing cover, the package assembly of external seal lid is set to the inner wall of bearing outer ring, outer block piece is fixed at the left side of package assembly, the internal member of interior sealing cover is set to the outer wall of bearing inner race, interior block piece is fixed at the right side of internal member, outside, the seal of annular is equipped between interior sealing cover, multiple cyclic annular outer lugs and cyclic annular internal projection are further respectively had on the outer wall and inner wall of seal, the inner wall of package assembly is also provided with multiple external grooves, the outer wall of internal member is also provided with multiple inner groovies, at least one sealing lip is additionally provided on the right side of seal, the sealing lip groove of annular is also provided on sealing lip, preloading spring is also embedded in sealing lip groove.By using above structure, the utility model has more good sealing performance, to ensure that the service performance and service life of itself significantly.

Description

Closed type bearing-hub assembly

Technical field

The utility model relates to a kind of closed type bearing-hub assemblies.

Background technique

Hub bearing is one of key components and parts of vehicle, is installed at Vehicle Axles, to load-bearing and is wheel hub Rotation provides accurate guidance.Since hub bearing is very close to ground, need to adapt to various complex road conditions and severe traveling ring Border, therefore, hub bearing just need to have good sealing performance.But be the problems of at the same time be limited to structure and The sealing performance of limitation in design, existing hub bearing is still not ideal enough, in the driving process of vehicle, external ash Dirt, silt etc. are still easier the inside into hub bearing, thus greatly reduce the service performance of hub bearing and make Use the service life.

Utility model content

To overcome the above the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide one kind to have more Good sealing performance, thus ensure that significantly itself service performance and service life closed type bearing-hub assembly.

The technical solution of the utility model is:

A kind of closed type bearing-hub assembly, including bearing outer ring, bearing inner race, rolling element and retainer, and the rolling Kinetoplast is installed between the bearing outer ring and bearing inner race by the retainer, left end and bearing in the bearing outer ring Further respectively having external seal lid and interior sealing cover between the left end of inner ring, the external seal lid includes package assembly and outer block piece, The interior sealing cover includes internal member and interior block piece, wherein the package assembly is set to the inner wall of the bearing outer ring, it is described outer Block piece is fixed at the left side of the package assembly, and the internal member is set to the outer wall of the bearing inner race, and the interior block piece is fixed Set on the right side of the internal member；

The seal of annular, and the outer wall of the seal and institute are additionally provided between the external seal lid and interior sealing cover The inner wall sealing cooperation of package assembly is stated, the outer wall sealing of the inner wall of the seal and the internal member cooperates, while described Multiple cyclic annular outer lugs and cyclic annular internal projection are further respectively had on the outer wall and inner wall of seal, the package assembly inner wall also Offer multiple external grooves corresponding with the cyclic annular outer lug, the outer wall of the internal member be also provided with it is multiple with it is described The corresponding inner groovy of cyclic annular internal projection；

At least one sealing lip, and the right end of the sealing lip and the interior gear are additionally provided on the right side of the seal Part fits closely, while the sealing lip groove of annular is also provided on the sealing lip, also embedding in the sealing lip groove Equipped with preloading spring.

Above-mentioned closed type bearing-hub assembly, wherein being additionally provided with external rubber ring on the outer block piece, and described outer Portion's rubber ring is also close to the internal member.

Above-mentioned closed type bearing-hub assembly, wherein being also provided with multiple seal body recess on the right side of the seal.

Above-mentioned closed type bearing-hub assembly, wherein the number of the sealing lip is two, and two sealing lips point Not She Yu the seal right upper portion and lower right side.

Above-mentioned closed type bearing-hub assembly, wherein being glued between the outer block piece and the seal by bonding agent It connects.

The beneficial effects of the utility model are: the utility model has more good sealing by using above structure Performance, to ensure that the service performance and service life of itself significantly.

Detailed description of the invention

Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.

Fig. 1 is the schematic diagram of the section structure of closed type bearing-hub assembly；

Fig. 2 is the partial enlargement structural representation of part A in Fig. 1.

In figure: bearing outer ring 1, bearing inner race 2, rolling element 3, retainer 4, package assembly 5, outer block piece 6, internal member 7, interior gear Part 8, seal 9, cyclic annular outer lug 10, cyclic annular internal projection 11, sealing lip 12, preloading spring 13, external rubber ring 14, seal Recess 15.

Specific embodiment

As depicted in figs. 1 and 2, a kind of closed type bearing-hub assembly, including bearing outer ring 1, bearing inner race 2, rolling element 3 With retainer 4, and rolling element 3 is installed between bearing outer ring 1 and bearing inner race 2 by retainer 4, on a left side for bearing outer ring 1 External seal lid and interior sealing cover are further respectively had between end and the left end of bearing inner race 2, and external seal lid includes package assembly 5 and outer Block piece 6, interior sealing cover include internal member 7 and interior block piece 8, and wherein package assembly 5 is set to the inner wall of bearing outer ring 1, and outer block piece 6 is solid Surely it is set to the left side of package assembly 5, internal member 7 is set to the outer wall of bearing inner race 2, and interior block piece 8 is fixed at the right side of internal member 7；

The seal 9 of annular, and the outer wall of seal 9 and package assembly 5 are additionally provided between outer sealing cover and interior sealing cover Inner wall seal cooperation, the outer wall of the inner wall of seal 9 and internal member 7, which seals, to be cooperated, while in the outer wall and inner wall of seal 9 On further respectively have multiple cyclic annular outer lugs 10 and cyclic annular internal projection 11, the inner wall of package assembly 5 be also provided with it is multiple with it is cyclic annular The corresponding external groove of outer lug 10 is also provided with multiple indents corresponding with cyclic annular internal projection 11 in the outer wall of internal member 7 Slot；

It is additionally provided at least one sealing lip 12 on the right side of seal 9, and the right end of sealing lip 12 and interior block piece 8 are close Fitting, while annular sealing lip groove is also provided on sealing lip 12, preloading spring is also embedded in sealing lip groove 13。

Under the above constitution, it is embedded between external seal lid and interior sealing cover by being equipped with seal 9, while seal 9 Outer wall and the inner wall of package assembly 5 seal and cooperate, the outer wall of the inner wall of seal 9 and internal member 7, which seals, to be cooperated, so just effectively It is filled with the gap between external seal lid and interior sealing cover, so as to effectively prevent external rainwater, dust etc. from entering Bearing inner, It is provided with splendid waterproof and dustproof effect, which improve the sealing performances of bearing, and significantly improve its service life.Pass through It is further respectively equipped with cyclic annular outer lug 10, external groove and cyclic annular internal projection 11, inner groovy, so that seal 9 both more mentions It rises and ensure that sealing performance, while can also carry out in the axial direction good limit to it, prevent it from generating at work axial It is mobile.

And by being further provided with sealing lip 12 and preloading spring 13, in this way under the tension force effect of preloading spring 13, i.e., The right end of sealing lip 12 is set to generate abrasion under long-term work, it is also possible that it resists interior block piece 8 always, to effectively supplement With the sealing function for strengthening seal 9.

Preferably for above-mentioned closed type bearing-hub assembly, wherein external rubber ring 14 is additionally provided on outer block piece 6, And external rubber ring 14 is also close to internal member 7.Stop in this way, external rubber ring 14 can be formed in the outside of hub bearing Structure reinforces sealing effect, external rainwater, dust etc. is made more to be not easily accessed Bearing inner.

Preferably for above-mentioned closed type bearing-hub assembly, wherein being also provided with multiple sealings on the right side of seal 9 Body recess 15.In this way, the contact area of seal 9 and lubricating oil etc. just can be further increased, to enhance to it in work Cooling effect during work.

Preferably for above-mentioned closed type bearing-hub assembly, wherein the number of sealing lip 12 is two, and this two Sealing lip 12 is respectively arranged on the right upper portion and lower right side of seal 9.

Preferably for above-mentioned closed type bearing-hub assembly, pass through bonding agent between China and foreign countries' block piece 6 and seal 9 It is bonded.

In conclusion the utility model has more good sealing performance, to protect significantly by using above structure Itself service performance and service life are demonstrate,proved.

The utility model preferred embodiment and embodiment are explained in detail above in conjunction with attached drawing, but this Utility model is not limited to the above embodiment and embodiment, within the knowledge of those skilled in the art, may be used also With various changes can be made without departing from the concept of the premise utility.

Claims (5)

1. a kind of closed type bearing-hub assembly, including bearing outer ring, bearing inner race, rolling element and retainer, and the rolling Body is installed between the bearing outer ring and bearing inner race by the retainer, it is characterised in that: in the bearing outer ring External seal lid and interior sealing cover are further respectively had between left end and the left end of bearing inner race, the external seal lid includes package assembly With outer block piece, the interior sealing cover includes internal member and interior block piece, wherein the package assembly is set to the interior of the bearing outer ring Wall, the outer block piece are fixed at the left side of the package assembly, and the internal member is set to the outer wall of the bearing inner race, described interior Block piece is fixed at the right side of the internal member；

It is additionally provided with the seal of annular between the external seal lid and interior sealing cover, and the outer wall of the seal and described outer The inner wall of external member seals cooperation, and the outer wall sealing of the inner wall of the seal and the internal member cooperates, while in the sealing Multiple cyclic annular outer lugs and cyclic annular internal projection are further respectively had on the outer wall and inner wall of body, are also opened up in the inner wall of the package assembly There are multiple external grooves corresponding with the ring-type outer lug, is also provided with the multiple and ring-type in the outer wall of the internal member The corresponding inner groovy of internal projection；

At least one sealing lip is additionally provided on the right side of the seal, and the right end of the sealing lip and the interior block piece are tight Closely connected conjunction, while annular sealing lip groove is also provided on the sealing lip, it is also embedded in the sealing lip groove Preloading spring.

2. closed type bearing-hub assembly as described in claim 1, it is characterised in that: be additionally provided with outside on the outer block piece Rubber ring, and the external rubber ring is also close to the internal member.

3. closed type bearing-hub assembly as described in claim 1, it is characterised in that: also opened up on the right side of the seal There are multiple seal body recess.

4. closed type bearing-hub assembly as described in claim 1, it is characterised in that: the number of the sealing lip is two, And two sealing lips are respectively arranged on the right upper portion and lower right side of the seal.

5. closed type bearing-hub assembly as described in claim 1, it is characterised in that: the outer block piece and the seal it Between be bonded by bonding agent.