CN113494535B

CN113494535B - Hub bearing with spline structure

Info

Publication number: CN113494535B
Application number: CN202110831797.XA
Authority: CN
Inventors: 胡晟; 胡世雄
Original assignee: Shanghai C&U Group Co Ltd; C&U Co Ltd
Current assignee: Shanghai C&U Group Co Ltd; C&U Co Ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-05-10
Anticipated expiration: 2041-07-22
Also published as: CN113494535A

Abstract

The invention discloses a hub bearing with a spline structure, which comprises a rotary connector, a flange inner ring, a flange outer ring and a connecting inner ring, wherein a first rolling groove is formed between the flange inner ring and the flange outer ring, a second rolling groove is formed between the connecting inner ring and the flange outer ring, steel balls are arranged in the first rolling groove and the second rolling groove, a clamping groove is formed on the inner ring of the flange, the connecting inner ring is provided with a first ring body and a second ring body in a split manner, a plurality of guide grooves and guide blocks are arranged between the first ring body and the second ring body, the guide groove is formed by inserting and matching with the guide block, the first ring body is clamped and arranged in the clamping groove, the first ring body and the second ring body are provided with a first slide and a second slide respectively corresponding to the positions of the steel balls, the second ring body extends to the outer ring of the flange to form a shielding table, and the second ring body extends to the rotary connector to form the shielding table. The oil supplementing device is reasonable in structure, has a good sealing effect, is convenient for oil supplementing and disassembling, and improves the using effect of the whole structure.

Description

Hub bearing with spline structure

Technical Field

The invention relates to the technical field of hub bearings.

Background

The hub bearings of the drive wheels are typically connected to the vehicle drive element, i.e. the ball cage shaft, using pairs of internal and external splines to effect the transfer of vehicle power. Traditional wheel hub bearing is when using, because operational environment is in the vibration that lasts, and operational environment is abominable, external impurity influences overall structure easily, and get into the bearing easily inside, seriously influence overall structure's result of use, and overall bearing needs a large amount of lubricating grease in order to keep the smoothness nature of overall work in the use simultaneously, and present wheel hub bearing mends oily difficulty, needs whole dismantlement replacement, and the maintenance cost is high, reduces overall structure's result of use.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the hub bearing with the spline structure, which is reasonable in structure, has a good sealing effect, is convenient to supplement oil and disassemble, and improves the using effect of the whole structure.

In order to achieve the purpose, the invention provides a hub bearing with a spline structure, which comprises a rotary connector, a flange inner ring, a flange outer ring and a connecting inner ring, wherein a first rolling groove is formed between the flange inner ring and the flange outer ring, a first rolling way is arranged on the outer wall of the connecting inner ring, a second rolling way is arranged on the flange outer ring corresponding to the first rolling way, the first rolling way and the second rolling way are combined to form a second rolling groove, steel balls are arranged in the first rolling groove and the second rolling groove, a clamping groove is formed on the flange inner ring, a first ring body and a second ring body are separately arranged and formed on the connecting inner ring, a plurality of guide grooves and guide blocks are arranged between the first ring body and the second ring body, the guide grooves and the guide blocks are in inserted connection and matched to form fixed connection of the first ring body and the second ring body, and the first ring body is clamped and arranged in the clamping groove, the first ring body and the second ring body are provided with a first slide and a second slide respectively corresponding to the positions of the steel balls, the first slide and the second slide are combined to form a first raceway, the second ring body extends to the outer ring of the flange to form a shielding table, and the second ring body extends to the connecting position of the inner ring of the flange and the rotary connector to form the shielding table.

The arrangement has the advantages that the connecting inner ring is arranged in a split manner to form the first ring body and the second ring body, the stability of the position of the steel ball is ensured by the first ring body, the shielding table and the shielding table on the second ring body play the role of a sealing lip in the traditional bearing, meanwhile, external impurities are more difficult to enter, the guide groove and the guide block are matched in an inserting manner to realize installation, the installation is convenient and efficient, the steel ball is not easy to loose, the structure is simpler, the guide groove and the guide block which are optimized are both arranged in a wedge shape, the integral structure is more stable and difficult to loose, a second slide way is further arranged on the second ring body, the effect of surrounding the steel ball can be effectively realized, the stability of the steel ball is ensured, meanwhile, the second ring body can be disassembled, the steel ball can be conveniently checked and replaced, the replaceability of parts of the integral structure is improved, and the service life of the integral structure is prolonged, the waste of resources is avoided.

As a further arrangement of the invention, the upper wall of the shielding table is provided with a first framework which is bent towards the outer ring of the flange, a first sealing rubber sleeve is wrapped outside the first framework, a second framework is arranged on the lower wall of the shielding table, a second sealing rubber sleeve is wrapped on the second framework, and a sealing lip extends from the second sealing rubber sleeve to the rotary connector.

The beneficial effect who sets up like this is that, set up like this and can further shelter from shielding the clearance between platform and the flange outer lane and between platform and the swivelling joint head, avoids outside foreign particles to get into key position, and simple structure does benefit to the realization simultaneously, effectively prolongs overall structure's life.

As a further arrangement of the invention, the second ring body is divided into two combined parts, the two combined parts are arranged in a half-moon shape, the connecting hooks are respectively arranged at the connecting positions of the two combined parts, hook grooves are arranged between the connecting hooks and the corresponding combined parts, and the two combined parts are in inserted connection with the hook grooves on the other combined part through the connecting hooks to form fixed connection of the two combined parts.

The beneficial effect who sets up like this is, through this kind of structure for the second circle body is convenient for more installs, and the combination is swift, effectively improves production machining efficiency, and simple structure does benefit to the realization, and connection stability is high, and difficult emergence pine takes off, effectively improves overall structure's stability in use and result of use.

As a further arrangement of the invention, an oil storage cavity is further arranged at the position of the first ring body corresponding to the steel ball, an oil supply cavity is formed in the second ring body, and the oil supply cavity is communicated with the oil storage cavity.

The beneficial effect who sets up like this is that, the replenishment of the lubricating oil of being convenient for can last the fuel feeding to the oil storage chamber, satisfies the lubricated cooling demand of steel ball, effectively improves overall structure's result of use.

As a further arrangement of the invention, a positioning protrusion is formed at one end of the rotary connector facing the flange inner ring, a positioning groove is formed in the inner wall of the flange inner ring, the positioning protrusion is in clearance fit with the positioning groove, the contact surface of the flange inner ring and the rotary connector is a conical surface, a plurality of connecting teeth are uniformly distributed on the conical surface, an abutting surface matched with the conical surface is formed at the end part of the rotary connector, a plurality of clamping teeth are arranged on the abutting surface, and the connecting teeth are clamped with the clamping teeth.

The beneficial effect who so sets up is: with this arrangement, the spline contact surface can be tightened with a higher torque than in the conventional paired internal spline connection. The tooth surface of the connecting tooth is set to be a conical surface, so that a larger meshing area can be brought, and the transmission efficiency is higher. Further extension line of connecting tooth and latch meshing department tooth all hands over on the bearing axis, can greatly increase its self-centering performance, make whole higher with rotary joint cooperation precision, can eliminate the abnormal sound problem that traditional internal spline appears easily, the pitch circle diameter of connecting the tooth as preferred is equivalent with the rotary joint diameter, and compare with traditional internal spline, rotary joint's dabber is shorter, holistic quality is lighter, be favorable to reducing the vehicle quality, improve vehicle driveability, simultaneously because the quality is lighter, help improving vehicle fuel economy. Meanwhile, the end face connecting tooth is simpler in structure, the assembly difficulty is simplified, and the maintenance is easier.

As a further arrangement of the invention, the connecting teeth are connected with the inner wall of the inner ring of the flange through smooth arc-shaped surfaces, and the arc-shaped surfaces are gradually narrowed from the direction close to the inner wall of the inner ring of the flange to the direction far away from the inner wall of the inner ring of the flange.

The beneficial effect who so sets up is: set up like this, have guide positioning's effect when making whole equipment through the arcwall face, improve production machining efficiency, simple structure is convenient for production and processing simultaneously.

As a further arrangement of the invention, a connecting convex rib and a connecting groove are arranged between the positioning bulge and the positioning groove, and the connecting convex rib is in splicing fit with the connecting groove.

The beneficial effect who so sets up is: set up like this for flange inner circle is more stable with being connected of swivelling joint head, and the transmission is more high-efficient, and simple structure does benefit to the realization simultaneously.

As a further arrangement of the invention, an isolation groove is formed between the positioning bulge and the latch.

The beneficial effect who so sets up is: set up like this, through the isolation groove structure, can help the control of flank of tooth processing cutter, simultaneously, can effectively avoid the interference that appears when assembling with flange inner circle location arch, receive the load in-process in the operation simultaneously, can effectively reduce the stress concentration that produces after the atress, effectively improve overall structure's result of use and stability in use.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a partial schematic view of the connection position of the assembly according to the embodiment of the present invention.

Detailed Description

An embodiment of a hub bearing with a spline structure of the present invention is shown in fig. 1 to 3: the flange inner ring comprises a rotary connector 4, a flange inner ring 1, a flange outer ring 2 and a connecting inner ring, wherein a first rolling groove is formed between the flange inner ring 1 and the flange outer ring 2, a first rolling way is arranged on the outer wall of the connecting inner ring, a second rolling way is arranged at the position of the flange outer ring 2 corresponding to the first rolling way, the first rolling way and the second rolling way are combined to form a second rolling groove, steel balls 3 are arranged in the first rolling groove and the second rolling groove, a clamping groove is formed on the flange inner ring 1, a first ring body 5 and a second ring body 6 are arranged in a split manner, a plurality of guide grooves and guide blocks are arranged between the first ring body 5 and the second ring body 6, the guide grooves and the guide blocks are in inserted connection and matched to form fixed connection of the first ring body 5 and the second ring body 6, the first ring body 5 is clamped in the clamping groove, a first slideway and a second slideway are arranged at the positions of the first ring body 5 and the second ring body 6 corresponding to the steel balls 3 respectively, first slide and the combination of second slide form first raceway, second circle body 6 extends to flange outer lane 2 and has sheltered from platform 61, second circle body 6 extends to flange inner circle 1 and rotary joint 4 hookup location and is formed with shelters from platform 62. The arrangement has the advantages that the connecting inner ring is separately arranged to form the first ring body 5 and the second ring body 6, the stability of the position of the steel ball 3 is ensured by the first ring body 5, the shielding table 62 and the shielding table 61 on the second ring body 6 play a role of a sealing lip in the traditional bearing, meanwhile, external impurities are more difficult to enter, the two rings are installed by the insertion and matching of the guide grooves and the guide blocks, the installation is convenient and efficient, the loosening is difficult, the structure is simpler, the guide grooves and the guide blocks which are optimized are both wedge-shaped, the integral structure is more stable and difficult to loosen, a second slideway is further arranged on the second ring body 6, the surrounding effect on the steel ball 3 can be effectively realized, the stability of the steel ball 3 is ensured, meanwhile, the second ring body 6 can be disassembled, the steel ball 3 can be conveniently inspected and replaced, and the replaceability of parts of the integral structure is improved, the service life of the whole structure is prolonged, and the waste of resources is avoided.

As a further arrangement of the present invention, the upper wall of the shielding table 61 is provided with a first framework 64, the first framework 64 is bent toward the flange outer ring 2, a first sealing rubber sleeve 641 is wrapped outside the first framework 64, a second framework 65 is arranged on the lower wall of the shielding table 62, a second sealing rubber sleeve 651 is wrapped on the second framework 65, and a sealing lip extends from the second sealing rubber sleeve 651 toward the rotary connector 4. The beneficial effect who sets up like this is that, set up like this and can further shelter from shielding the clearance between platform 61 and the flange outer lane 2 and between platform 62 and the swivelling joint head 4, avoids outside foreign particles to get into key position, and simple structure does benefit to the realization simultaneously, effectively prolongs overall structure's life.

As a further arrangement of the invention, the second ring body 6 is divided into two assemblies, the two assemblies are arranged in a half-moon shape, the connecting hooks 67 are respectively arranged at the connecting positions of the two assemblies, a hook groove 66 is arranged between each connecting hook 67 and the corresponding assembly, and the two assemblies are in inserted connection with the hook groove 66 on the other assembly through the connecting hooks 67 to form fixed connection of the two assemblies. The beneficial effect who sets up like this is, through this kind of structure for second circle body 6 is convenient for more installs, and the combination is swift, effectively improves production machining efficiency, and simple structure does benefit to the realization, and connection stability is high, and difficult emergence pine takes off, effectively improves overall structure's stability in use and result of use.

As a further arrangement of the invention, an oil storage cavity 51 is further arranged at the position of the first ring body 5 corresponding to the steel ball 3, an oil supplementing cavity 63 is formed in the second ring body 6, and the oil supplementing cavity 63 is communicated with the oil storage cavity 51. The beneficial effect who sets up like this is that, the replenishment of the lubricating oil liquid of being convenient for can last the oil supply to oil storage chamber 51, satisfies steel ball 3's lubricated cooling demand, effectively improves overall structure's result of use.

As a further arrangement of the invention, a positioning protrusion 41 is formed at one end of the rotary connector 4 facing the flange inner ring 1, a positioning groove is formed on the inner wall of the flange inner ring 1, the positioning protrusion 41 is in clearance fit with the positioning groove, the contact surface of the flange inner ring 1 and the rotary connector 4 is a conical surface, a plurality of connecting teeth 11 are uniformly distributed on the conical surface, an abutting surface adapted to the conical surface is formed at the end of the rotary connector 4, a plurality of latch teeth 42 are arranged on the abutting surface, and the connecting teeth 11 are clamped with the latch teeth 42. The beneficial effect who so sets up is: with this arrangement, the spline contact surface can be tightened with a higher torque than in the conventional paired internal spline connection. The tooth surface of the connecting tooth 11 is arranged to be a conical surface, so that a larger meshing area can be brought, and the transmission efficiency is higher. Further extension line of connecting tooth 11 and latch 42 meshing department tooth all hands over on the bearing axis, can greatly increase its from centering performance, it is higher to make wholly with rotary joint cooperation precision, can eliminate the abnormal sound problem that traditional internal spline appears easily, the pitch circle diameter of connecting tooth 11 as preferred is equivalent with the rotary joint diameter, and compare with traditional internal spline, rotary joint's dabber is shorter, holistic quality is lighter, be favorable to reducing the vehicle quality, improve vehicle driveability, simultaneously because the quality is lighter, help improving vehicle fuel economy. Meanwhile, the end face connecting tooth 11 is simpler in structure, simplifies assembly difficulty and is easier to maintain.

As a further arrangement of the invention, the connecting teeth 11 are connected with the inner wall of the flange inner ring 1 through smooth arc-shaped surfaces, and the arc-shaped surfaces are gradually narrowed from the direction close to the inner wall of the flange inner ring 1 to the direction far away from the inner wall of the flange inner ring 1. The beneficial effect who so sets up is: set up like this, have guide positioning's effect when making whole equipment through the arcwall face, improve production machining efficiency, simple structure is convenient for production and processing simultaneously.

As a further arrangement of the present invention, a connecting convex rib and a connecting groove are arranged between the positioning protrusion 41 and the positioning groove, and the connecting convex rib and the connecting groove are in insertion fit. The beneficial effect who so sets up is: set up like this for flange inner circle is more stable with being connected of swivelling joint head, and the transmission is more high-efficient, and simple structure does benefit to the realization simultaneously.

As a further arrangement of the present invention, a separation groove 43 is formed between the positioning protrusion 41 and the latch 42. The beneficial effect who so sets up is: set up like this, through the isolation groove 43 structure, can help the control of flank of tooth processing cutter, simultaneously, can effectively avoid the interference that appears when protruding 41 assembles with flange inner circle 1 location, receive the load in-process in the operation simultaneously, can effectively reduce the stress concentration that produces after the atress, effectively improve overall structure's result of use and stability in use.

The above example is only one of the preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. The utility model provides a wheel hub bearing with spline structure, includes swivelling joint head, flange inner circle, flange outer lane and connects the inner circle, be formed with first raceway between flange inner circle and the flange outer lane, be provided with first raceway on connecting the inner circle outer wall, the flange outer lane corresponds first raceway position and is provided with the second raceway, first raceway and second raceway combination form the second raceway, all be provided with steel ball, its characterized in that in first raceway and the second raceway: the flange is formed with the joint groove in the circle, it is formed with first circle body and second circle body to connect the inner circle components of a whole that can function independently setting, be provided with a plurality of guide ways and guide block between first circle body and the second circle body, the guide way forms the fixed connection of first circle body and second circle body with the guide block cooperation of pegging graft, first circle body joint sets up in the joint groove, first circle body and second circle body correspond the steel ball position and are provided with first slide and second slide respectively, first slide and second slide combination form first raceway, the second circle body has the shielding platform to flange outer lane extension, the second circle body is formed with to shielding the platform to flange inner circle and swivelling joint head hookup location extension.

2. The hub bearing with a spline structure of claim 1, wherein: the shielding platform is characterized in that a first framework is arranged on the upper wall of the shielding platform, the first framework is bent towards the outer ring of the flange, a first sealing rubber sleeve is wrapped outside the first framework, a second framework is arranged on the lower wall of the shielding platform, a second sealing rubber sleeve is wrapped on the second framework, and a sealing lip extends towards the rotary connector.

3. The hub bearing with a spline structure of claim 2, wherein: the first ring body is provided with an oil storage cavity corresponding to the position of the steel ball, an oil supply cavity is formed in the second ring body, and the oil supply cavity is communicated with the oil storage cavity.

4. The hub bearing with a spline structure of claim 1, wherein: the utility model discloses a flange, including rotary connector, flange inner circle, locating groove clearance fit, the rotary connector is formed with the location arch towards the one end of flange inner circle, flange inner circle inner wall is provided with the constant head tank, location arch and constant head tank clearance fit, the flange inner circle sets up to the toper face with rotary connector's contact surface, the equipartition has a plurality of connection teeth on the toper face, the rotary connector tip is formed with the conflict face that is used for with toper face looks adaptation, be provided with a plurality of latches on the conflict face, connect the setting of tooth and latch joint.

5. The hub bearing with a spline structure of claim 4, wherein: the connecting teeth are connected with the inner wall of the flange inner ring through smooth arc-shaped surfaces, and the arc-shaped surfaces are gradually narrowed from the direction close to the inner wall of the flange inner ring to the direction far away from the inner wall of the flange inner ring.

6. The hub bearing with a spline structure according to claim 4 or 5, wherein: the positioning device is characterized in that a connecting convex rib and a connecting groove are arranged between the positioning protrusion and the positioning groove, and the connecting convex rib is in inserting fit with the connecting groove.

7. The hub bearing with a spline structure of claim 6, wherein: an isolation groove is formed between the positioning protrusion and the clamping tooth.