CN213270758U

CN213270758U - Anti-static deep groove ball bearing

Info

Publication number: CN213270758U
Application number: CN202022214911.8U
Authority: CN
Inventors: 覃锐; 胡纪强; 胡杰
Original assignee: NINGBO DONGHUANG BEARING CO Ltd
Current assignee: NINGBO DONGHUANG BEARING CO Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-05-25
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses an anti-static deep groove ball bearing, which comprises a bearing body, wherein a plurality of steel balls are connected inside the bearing body, the outer side of the bearing body is connected with an insulating shell for anti-static, the inner side end of the insulating shell is provided with a mounting groove, and a plurality of insulating bosses for increasing the static friction force of the mounting part of the insulating shell and the bearing body are connected in the mounting groove, the contact part of the insulating bosses and the bearing body is an excessive circular arc, the anti-static deep groove ball bearing integrally injects the insulating shell for static discharge outside the bearing body by adopting an injection molding mode, thereby being convenient for improving the integral anti-static property of the deep groove ball bearing, simultaneously reducing the troubles of large manufacturing difficulty, low manufacturing precision and the like generated in the production process of the ceramic bearing, being convenient for improving the integral anti-static property of the deep groove ball bearing, and simultaneously arranging an assembly inclination angle at one end of the insulating shell and a, the installation of bearing body and insulating casing is convenient for.

Description

Anti-static deep groove ball bearing

Technical Field

The utility model relates to a bearing technical field specifically is an prevent static deep groove ball bearing.

Background

The common deep groove ball bearing is used as an operation carrier, the manufacturing materials of the common deep groove ball bearing are all bearing steel, the steel has all conductive properties, under some special working conditions, current can appear when a customer uses the bearing, the generation of the current can cause fatal damage to the service life of the bearing, and the current corrosion is formed, so that the early failure of the bearing is caused.

The following modes can be adopted in the market at present for solving the trouble brought by the current: the first way is to use ceramic ball bearings; the second mode is that the bearing surface adopts a special coating; the ceramic ball bearing has low market adoption rate due to the reasons of expensive ceramic materials, high manufacturing difficulty, low manufacturing precision, high brittleness and the like; the special insulating coating bearing needs to coat the surface of the ferrule, but the current coating technology is immature, uneven in coating, unstable in coating adhesion, high in coating price, low in coating qualification rate and the like, and the market share is low. Therefore, an anti-static deep groove ball bearing is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an prevent static deep groove ball bearing to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an prevent static deep groove ball bearing, includes the bearing body, bearing body internal connection has a plurality of steel balls, the insulating casing of preventing static usefulness is connected in the bearing body outside, insulating casing medial extremity is equipped with the mounting groove, and is connected with the insulating boss of a plurality of increases insulating casing and bearing body installation department stiction, the contact department of insulating boss and bearing body is excessive circular arc, through the laminating of insulating casing and bearing body, is convenient for heighten the antistatic nature of bearing.

Preferably, an assembly inclination angle is arranged at one end of the insulating shell, so that positioning treatment before the insulating shell is assembled is facilitated.

Preferably, the other end of the insulating shell far away from the assembling dip angle is provided with a positioning step, so that when the bearing body is arranged in the insulating shell, the end of the bearing body is positioned.

Preferably, the assembly inclination angle is alpha, and alpha is greater than or equal to 10 degrees and less than or equal to 15 degrees, which is beneficial to installation of the end face of the insulation housing.

Preferably, the inner side of the insulating shell is provided with an assembly fillet, so that the inner side of the insulating shell is attached to the bearing body conveniently.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an adopt injection moulding's mode, the whole insulating casing that will discharge static moulds plastics in the bearing body outside, through insulating casing's the antistatic character, is convenient for improve deep groove ball bearing's whole antistatic nature.

2. The utility model discloses insulating casing one end is provided with the assembly inclination, and the insulating casing other end is equipped with the location step, is convenient for guarantee the laminating degree of insulating casing and bearing, and it is big to have reduced the manufacturing degree of difficulty that produces in the ceramic bearing production process simultaneously, makes the trouble such as the precision is low, is convenient for improve deep groove ball bearing's whole antistatic properties, simultaneously at the assembly inclination that insulating casing one end department set up and the location step of other end department, the bearing body of being convenient for and insulating casing's installation.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the partial sectional structure of the present invention;

FIG. 3 is an enlarged view of the area A in FIG. 2;

fig. 4 is an enlarged structural diagram of a region B in fig. 3.

In the figure: 1-a bearing body; 2-steel balls; 3-an insulating housing; 4-assembling the inclination angle; 5-positioning a step; 6, assembling a fillet; 7-mounting grooves; 8-insulating boss.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an anti-static deep groove ball bearing solves the problems that the existing deep groove ball bearing is made of ceramic bearings or special material bearings in an anti-static way, the ceramic bearings are difficult to manufacture, the manufacturing precision is low, meanwhile, the special material bearings are high in manufacturing cost and not tightly attached to the special materials, the anti-static deep groove ball bearing comprises a bearing body 1, a plurality of steel balls 2 are connected inside the bearing body 1, the steel balls 2 roll at the inner ring of the bearing body 1, an external shaft is inserted inside the bearing body 1 and is in rolling connection with the steel balls 2, the rotation of the shaft is convenient, an insulating shell 3 for preventing static electricity is connected to the outer side of the bearing body 1, the insulating shell 3 is integrally injected at the outer side of the bearing body 1 in an injection molding mode, a mounting groove 7 is arranged at the inner side end of the insulating shell 3, and a plurality of insulating bosses 8 for increasing the static friction force at the mounting positions of the insulating shell 3 and the bearing, the contact position of the insulating boss 8 and the bearing body 1 is in a transition arc shape, the insulating boss 8 is in contact with the bearing body 1, the static friction force of the bearing body 1 and the insulating shell 3 during installation is improved, and static electricity generated by friction between the inner side end of the insulating shell 3 and the bearing body 1 is reduced.

When the bearing body 1 is spliced and installed in the scheme, the steel balls 2 are installed at the inner ring of the bearing body 1, the inner ring is fixed, the anti-static insulating shell 3 is injection molded outside the bearing body 1 in an injection molding mode, the bearing body 1 still adopts a common deep groove ball bearing, the inner ring, the outer ring and the steel balls of the bearing adopt GCr15 bearing steel, the retainer can adopt an SPCC or nylon retainer, and the sealing element can adopt a dust cover or a sealing ring; lubricating grease is filled in the bearing, the outer ring of the bearing is wrapped by injection molding through an insulating material, the outer diameter of the insulating shell 3 after injection molding is larger than the outer diameter of the bearing outer ring, the width of the insulating shell is larger than the width of the bearing outer ring, the outer diameter and the end face of the bearing outer ring are wrapped by injection molding, and the wrapping area greatly increases the bonding strength.

In the scheme, an assembly inclination angle 4 is arranged at one end of the insulating shell 3. And a positioning step 5 is arranged at the other end of one end, far away from the assembling inclination angle 4, of the insulating shell 3. The assembly inclination angle 4 is alpha, and alpha is not less than 10 and not more than 15. The inner side of the insulating shell 3 is provided with an assembly fillet 6, in the assembly process, the assembly inclination angle 4 is convenient for guiding installation in the assembly process, the assembly inclination angle 4 is designed to have an angle of 10 to 15, so that the assembly trouble of the bearing body 1 is reduced, the bearing body 1 is positioned and installed inside the insulating shell 3 under the action of the positioning step 5, and the assembly fillet 6 arranged on the inner side of the insulating shell 3 is convenient for improving the lubrication between the bearing body 1 and the insulating shell 3 and is convenient for assembly.

The bearing body 1 concrete assembling process in this scheme: the steel ball 2 is arranged at the inner ring of the bearing body 1, the inner ring is fixed, and the anti-static insulating shell 3 is injection molded outside the bearing body 1 by adopting an injection molding mode, the bearing body 1 still adopts a common deep groove ball bearing, the inner ring, the outer ring and the steel ball of the bearing adopt GCr15 bearing steel, a retainer can adopt SPCC or nylon retainer, and a sealing element can adopt a dust cover or a sealing ring; lubricating grease is filled in the bearing, the outer ring of the bearing is wrapped by adopting an insulating material in an injection molding manner, the outer diameter of the insulating shell 3 after the injection molding is larger than the outer diameter of the outer ring of the bearing body 1, the width of the insulating shell is larger than the width of the outer ring of the bearing body 1, the outer diameter and the end face of the outer ring of the bearing body 1 are wrapped by the injection molding, the wrapping area greatly increases the bonding strength, an assembly inclination angle 4 arranged at the front end of the insulating shell 3 plays a role in press-fitting guiding and is more beneficial to assembly, in the assembly process, one end of the bearing body 1 is guided into the insulating shell 3 along the assembly inclination angle 4, a positioning step 5 arranged at the rear end of the insulating shell 3 prevents the bearing from failing due to improper assembly position, the insulating shell 3 has insulating property, the thermoplasticity is strong, the hardness of the cooled material is high, the wear resistance is strong, meanwhile, the inner ring part of the bearing body 1 is sleeved at the sealed dustproof cover, so that the sealing dustproof performance among the sealed dustproof cover, the insulating shell 3 and the bearing body 1 is enhanced.

The insulating housing 3 wraps the sealed dustproof cover and the bearing body 1 through the insulating housing 3 integrally, so that the sealing dustproof performance between the bearing body 1 and the sealed dustproof cover and between the insulating housing 3 is increased.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an prevent static deep groove ball bearing, includes bearing body (1), bearing body (1) internal connection has a plurality of steel balls (2), its characterized in that: insulating casing (3) of antistatic usefulness are connected in bearing body (1) outside, insulating casing (3) medial extremity is equipped with mounting groove (7), and mounting groove (7) in-connection have a plurality of increase insulating casing (3) and bearing body (1) installation department static friction's insulating boss (8), the contact department of insulating boss (8) and bearing body (1) is excessive circular arc.

2. The anti-static deep groove ball bearing according to claim 1, characterized in that: and an assembly inclination angle (4) is arranged at one end of the insulating shell (3).

3. The anti-static deep groove ball bearing according to claim 2, characterized in that: and a positioning step (5) is arranged at the other end of one end, far away from the assembly inclination angle (4), of the insulating shell (3).

4. The anti-static deep groove ball bearing according to claim 2, characterized in that: the assembly inclination angle (4) is alpha, and alpha is not less than 10 and not more than 15.

5. The anti-static deep groove ball bearing according to claim 1, characterized in that: and an assembly fillet (6) is arranged on the inner side of the insulating shell (3).