CN215567347U - Hub bearing with axial splines - Google Patents

Abstract

The utility model discloses a hub bearing with an axial spline, 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 outer wall of the flange inner ring and the flange outer ring, a positioning step is also formed on the flange inner ring, the connecting inner ring is clamped with the positioning step, a second rolling groove is formed between the outer wall of the connecting inner ring and the flange outer ring, rolling bodies are arranged in the first rolling groove and the second rolling groove, a positioning bulge is formed at one end of the flange inner ring, which faces the rotary connector, a positioning groove is formed in the inner wall of the flange inner ring, the positioning bulge is in clearance fit with the positioning groove, a connecting spline and a spline groove are arranged between the positioning bulge and the positioning groove, and the connecting spline is in splicing fit with the spline groove. The structure is compact, the whole mass and weight are lower, the installation precision is high, and the power transmission is stable.

Description

Hub bearing with axial splines

Technical Field

The utility model 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 connected mode is provided with longer spline usually, and difficult processing and assembly are more difficult to and because the difficulty of processing assembly makes wearing and tearing appear more easily in the use, influences overall structure's life, and can appear the clearance usually between ball cage axle and the wheel hub bearing at the vehicle operation in-process, makes vehicle driving element and wheel hub for the axis of rotation disalignment, produces easily and starts abnormal sound, power transmission inequality scheduling problem.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the hub bearing with the axial spline, which has the advantages of compact structure, lower overall mass and weight, high installation precision and stable power transmission.

In order to achieve the purpose, the utility model provides a hub bearing with an axial spline, 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 outer wall of the flange inner ring and the flange outer ring, a positioning step is further formed on the flange inner ring, the connecting inner ring is clamped with the positioning step, a second rolling groove is formed between the outer wall of the connecting inner ring and the flange outer ring, rolling bodies are arranged in the first rolling groove and the second rolling groove, a positioning bulge is formed at one end, facing the rotary connector, of the flange inner ring, a positioning groove is formed in the inner wall of the flange inner ring, the positioning bulge is in clearance fit with the positioning groove, a connecting spline and a spline groove are formed between the positioning bulge and the positioning groove, and the connecting spline is in plug fit with the spline groove.

The beneficial effect who so sets up is: the flange inner ring is connected with the rotary connector more stably, transmission is more efficient, installation accuracy is higher, looseness is not prone to occurring, and meanwhile the structure is simple, production and machining efficiency is improved, and the using effect of the overall structure is effectively improved.

As a further arrangement of the utility model, a plurality of connecting teeth are uniformly distributed on the contact surface of the flange inner ring and the rotary connector, an abutting surface for abutting against the flange inner ring is formed at the end part of the rotary connector, a plurality of clamping teeth are arranged on the contact surface, and the connecting teeth and the clamping teeth are clamped and arranged.

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 spline structure of the connecting teeth is simpler, the assembly difficulty is simplified, and the connecting teeth are easier to maintain.

As a further arrangement of the utility model, 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 utility model, 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.

As a further arrangement of the utility model, a first sealing check ring is arranged between the flange outer ring and the connecting inner ring, and a second sealing check ring is arranged between the flange inner ring and the flange outer ring.

The beneficial effect who so sets up is: the sealing effect of the whole structure is guaranteed by the arrangement, and meanwhile, the sealing device is simple in structure and has a good using effect.

Drawings

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

fig. 2 is a partially enlarged view of a portion a in fig. 1 according to an embodiment of the present invention.

Detailed Description

An embodiment of the hub bearing with axial splines of the present invention is shown in fig. 1-2: including rotary joint 4, flange inner circle 1, flange outer lane 2 and connection inner circle 3, be provided with first slot between 1 outer wall of flange inner circle and the flange outer lane 2, still be formed with the location step on the flange inner circle 1, connect inner circle 3 and location step joint setting, be formed with the second slot between 3 outer walls of connection inner circle and the flange outer lane 2, be provided with rolling element 5 in first slot and the second slot, flange inner circle 1 is formed with location arch 41 towards the one end of rotary joint 4, 1 inner wall of flange inner circle is provided with the constant head tank, location arch 41 and constant head tank clearance fit, set up connecting spline 42 and spline groove 11 between location arch 41 and the constant head tank, connecting spline 42 and spline groove 11 are pegged graft and are cooperated. The beneficial effect who so sets up is: set up like this, through the cooperation of location arch 41 with the constant head tank, the overall structure's of being convenient for installation location to through connecting spline 42 and spline groove 11 grafting cooperation, make flange inner race 1 more stable with the being connected of swivelling joint head 4, the transmission is more high-efficient, and the installation accuracy is higher, and difficult emergence is not hard up, and simple structure improves production machining efficiency simultaneously, effectively improves overall structure's result of use.

As a further arrangement of the utility model, a plurality of connecting teeth 12 are uniformly distributed on a contact surface between the flange inner ring 1 and the rotary connector 4, an abutting surface for abutting against the flange inner ring 1 is formed at the end part of the rotary connector 4, a plurality of clamping teeth 43 are arranged on the contact surface, and the connecting teeth 12 and the clamping teeth 43 are clamped. 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 surfaces of the connecting teeth 12 are arranged to be conical surfaces, so that a larger meshing area can be brought, and the transmission efficiency is higher. Further extension line of connecting tooth 12 and latch 43 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 12 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 spline structure of the connecting teeth 12 is simpler, the assembly difficulty is simplified, and the maintenance is easier.

As a further arrangement of the utility model, the connecting teeth 12 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 separation groove 44 is formed between the positioning protrusion 41 and the latch 43. The beneficial effect who so sets up is: the arrangement is that the control of a tooth surface machining cutter can be facilitated through the structure of the isolation groove 44, meanwhile, the interference generated when the positioning protrusion 41 is assembled with the flange inner ring 1 can be effectively avoided, meanwhile, in the process that the operation is loaded, the stress concentration generated after stress can be effectively reduced, and the using effect and the using stability of the whole structure are effectively improved.

As a further arrangement of the present invention, a first sealing retainer ring 6 is arranged between the flange outer ring 2 and the connecting inner ring 3, and a second sealing retainer ring 7 is arranged between the flange inner ring 1 and the flange outer ring 2. The beneficial effect who so sets up is: the sealing effect of the whole structure is guaranteed by the arrangement, and meanwhile, the sealing device is simple in structure and has a good using effect.

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 (5)

1. The utility model provides a wheel hub bearing with axial spline, includes swivelling joint head, flange inner circle, flange outer lane and connects the inner circle, be provided with first slot rolling between flange inner circle outer wall and the flange outer lane, still be formed with the location step on the flange inner circle, it sets up with location step joint to connect the inner circle, it is formed with the second slot rolling to connect between inner circle outer wall and the flange outer lane, be provided with the rolling element in first slot rolling and the second slot rolling, its characterized in that: the flange inner race is formed with the location arch towards the one end of rotary joint head, flange inner race inner wall is provided with the constant head tank, protruding and the constant head tank clearance fit of location, set up connecting spline and spline groove between protruding and the constant head tank of location, connecting spline and spline groove are pegged graft and are cooperated.

2. The axially splined hub bearing of claim 1, wherein: the flange inner circle has a plurality of connection teeth with the equipartition on the contact surface of swivelling joint head, the swivelling joint head tip is formed with and is used for the conflict face inconsistent with the flange inner circle, be provided with a plurality of latches on the contact surface, connect tooth and latch joint setting.

3. The axially splined hub bearing of claim 2, 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.

4. The axially splined hub bearing of claim 3, wherein: an isolation groove is formed between the positioning protrusion and the clamping tooth.

5. The axially splined hub bearing of claim 1, wherein: a first sealing check ring is arranged between the flange outer ring and the connecting inner ring, and a second sealing check ring is arranged between the flange inner ring and the flange outer ring.

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