CN2929313Y

CN2929313Y - Three lips type contact seal part for deep ditch ball bearing

Info

Publication number: CN2929313Y
Application number: CN 200620044420
Authority: CN
Inventors: 白雪峰; 曹志飞; 郭长建; 刘铁影; 陈新萍
Original assignee: Sibote Bearing Technology R & D Co Ltd Shanghai
Current assignee: Sibote Bearing Technology R & D Co Ltd Shanghai
Priority date: 2006-07-31
Filing date: 2006-07-31
Publication date: 2007-08-01
Anticipated expiration: 2016-07-31

Abstract

The utility model relates to a three-lip contact type sealing part for deep groove ball bearing comprising an inner ring, an outer ring, a rolling ball, a retainer. The utility model is characterized in that a sealing caulking groove is provided on the two ends of the outer ring, a sealing ring is embedded in the sealing caulking groove, three outstretched lips are provided on the lower edge of the sealing ring, the inner ring between the outside lip and the intermediate lip is provided with a seal groove, the intermediate lip and the seal groove are contacted laterally, there is a gap between the outside lip and the inner ring. The utility model has the advantages that it achieves longer labyrinth length within the limited space, and has greater grinding resistance effect, a guiding lip with certain angle is provided, then the grease being flowing because of vibration and the like can influx the channel along the guiding lip, therefore achieves lubrication. Due to the influence of thermal effect in the bearing, the grease can be stored in the seal groove after issuing in the process of pull-in of the bearing contact type sealing lip.

Description

A kind of deep groove ball bearing is with three lip formula contact seal parts

Technical field

The utility model relates to a kind of bearing Sealing, and particularly a kind of deep groove ball bearing is with three lip formula contact seal parts.

Background technique

Can simplify main frame supporting position owing to use the bearing of Sealing, need not to add seal arrangement and lubrication system, it is easy, pollution-free to install simultaneously, is therefore extensively applied to industries such as various motors, household electric appliance, machinery, automobile, motorcycle, aerospace.The level of the sealability of its bearing, precision and reliability of service life directly influences the quality of matched host machine, the performance of stuffing box bearing is said also more important than the fatigue life of bearing in a sense, and the design of Sealing Structure of stuffing box bearing is to influence the most important link of stuffing box bearing performance level, because of its application difference, should adopt different design of Sealing Structure.The sealing configuration form of present domestic stuffing box bearing is fewer, be mainly axle and grind the contact-type rubber seal (see figure 1) of institute's optimal design, two kinds of structural types of contactless rubber seal (see figure 2) and dustproof cover structure form, at the application of various stuffing box bearings, single sealing configuration form just seems very not enough like this.

Summary of the invention

The purpose of this utility model is to solve the single existing the problems referred to above of existing deep groove ball bearing sealing configuration, provides a kind of deep groove ball bearing with three lip formula contact seal parts.The utility model designs a kind of deep groove ball bearing with three lip formula contact seal parts, comprise inner ring, outer ring, ball, retainer, it is characterized in that: the sealing caulking groove is arranged on the two ends of outer ring, be embedded with seal ring at the sealing caulking groove, there is the lip of three stretching, extensions the lower edge of seal ring, on the inner ring between the lip in the outside and the middle lip, seal groove is arranged, middle lip contacts with the seal groove side of inner ring, gapped between inboard lip and the inner ring, gapped between the lip in the outside and the inner ring.The utility model has the advantages that and in limited space, strive for obtaining longer labyrinth length, so have more mill inhibition effect; More reliable sealing effect, many guiding lips with an angle can flow in the raceway groove along the guiding lip when lubricant grease is flowed owing to factors such as vibrations, better realize lubrication.Because the influence of the thermal effect of bearing inside, in the process of bearing contact type sealing lip adhesive, grease can be stored in the seal groove after flowing out.

Description of drawings

Below in conjunction with drawings and Examples the utility model is elaborated,

Accompanying drawing 1 is a contact seal part structural representation of the prior art,

Accompanying drawing 2 is a noncontact seal spare structural representation of the prior art,

Accompanying drawing 3 is a structure partial schematic representation of the present utility model,

Embodiment

Comprise inner ring 1 among the figure, it is characterized in that: sealing caulking groove 8 is arranged on the two ends of outer ring 7, be embedded with seal ring 2 at sealing caulking groove 8, there is the lip of three stretching, extensions the lower edge of seal ring 2, on the inner ring 1 between the lip 3 in the outside and the middle lip 4, seal groove 5 is arranged, middle lip 4 contacts with seal groove 5 sides of inner ring 1, and is gapped between inboard lip 6 and the inner ring 1, gapped between the lip 3 in the outside and the inner ring 1.

During bearing operation, the lip 6,3 of inside and outside both sides is the non-contact lip, and middle lip 4 is the contact lip, and the seal groove 5 of three lips and inner ring 1 forms bent road labyrinth seal structure, hindering with local mill along the journey friction of fluid longshore current road constituted the mill inhibition effect, can effectively prevent leak-stopping fat.Middle contact lip 4 carries out contact seal by the elastic force that lip bending deflection produces, by contact magnitude of interference reasonable in design, make contact pressure little, so friction torque and temperature rise are all lower, simultaneously can resilience after the wearing and tearing, therefore excellent contact be can keep all the time, main leakproof, dustproof effect played.The guide face of inboard non-contact lip 6 imports the lubricating grease of top desaturation and the oil of separating out between steel ball and the raceway surface of contact again, bearing inside is played continue lubrication again.The non-contact lip 3 in the outside has an outside slope, this makes that dust is not easy to stop at lateral lip mouth 3, has reduced the chance that dust enters bearing inside, has also reduced the wearing and tearing of dust to sealing lip simultaneously, guarantee to contact lip and under the good operation condition, work, improve sealing effect.Sealing bottom and inner ring 1 seal groove 5 have formed grease trough, have played the effect of pressure buffer chamber and lubricating grease apotheca.

Claims

A kind of deep groove ball bearing is with three lip formula contact seal parts, comprise inner ring, outer ring, ball, retainer, it is characterized in that: the sealing caulking groove is arranged on the two ends of outer ring, be embedded with seal ring at the sealing caulking groove, there is the lip of three stretching, extensions the lower edge of seal ring, on the inner ring between the lip in the outside and the middle lip seal groove is arranged, and middle lip contacts with the seal groove side of inner ring, gapped between inboard lip and the inner ring, gapped between the lip in the outside and the inner ring.