CN215567343U - Flange inner ring and automobile hub bearing unit - Google Patents

Abstract

The utility model discloses a flange inner ring which comprises an inner ring body, wherein an inner ring channel is arranged on the periphery of the inner ring body, the inner ring channel is in transitional connection with an inner ring shaft shoulder through a first conical surface, and the diameter of the end surface of one end, close to the inner ring shaft shoulder, of the first conical surface is smaller than that of the end surface of one end, close to the inner ring channel, of the first conical surface. Simultaneously, the automobile hub bearing unit is also disclosed. According to the utility model, the conical surface transition design between the inner ring channel and the inner ring shaft shoulder is adopted, so that the inner ring channel and the inner ring shaft shoulder are integrated in a smooth manner, the rigidity of the flange inner ring is increased, the stress concentration at the inner ring shaft shoulder is reduced, the integral weight of the flange inner ring is lightened, meanwhile, the assembly of the retainer and the rolling body is facilitated, the rolling body is prevented from being damaged when the retainer and the rolling body assembly are assembled, the reliability and the material utilization rate of the bearing are improved, and the weight and the cost of the bearing are reduced.

Description

Flange inner ring and automobile hub bearing unit

Technical Field

The utility model relates to the technical field of automobile bearings, in particular to a flange inner ring and an automobile hub bearing unit.

Background

With the acceptance of new energy passenger cars in the market, the development trend of automobile hub bearings towards low energy consumption, light weight, high bearing capacity and high integration is increasingly obvious. The inner ring channel of the inner ring of the hub bearing flange is in cylindrical surface transitional connection with the inner ring shaft shoulder, stress concentration is easily generated at the inner ring shaft shoulder in the manufacturing process of the structure, the rigidity of the flange inner ring is poor, meanwhile, the assembly of a retainer and a rolling body is not facilitated, the early failure of the bearing is easily caused, and therefore the improvement is urgently needed.

Disclosure of Invention

Aiming at the technical problems in the prior art, the utility model provides a flange inner ring and an automobile hub bearing unit, and aims to solve the problems in the prior art.

In order to achieve the above purpose, the utility model provides the following technical scheme:

the flange inner ring comprises an inner ring body, wherein an inner ring channel is arranged on the periphery of the inner ring body, the inner ring channel is in transitional connection with an inner ring shaft shoulder through a first conical surface, and the end surface diameter of one end, close to the inner ring shaft shoulder, of the first conical surface is smaller than that of one end, close to the inner ring channel, of the first conical surface.

According to the scheme, the inner ring groove and the inner ring shaft shoulder are integrated in a gentle mode through the conical surface transition design between the inner ring groove and the inner ring shaft shoulder, the rigidity of the flange inner ring is increased, the stress concentration at the inner ring shaft shoulder is reduced, the overall weight of the flange inner ring is reduced, meanwhile, the assembly of the retainer and the rolling body is facilitated, the rolling body is prevented from being damaged when the retainer and the rolling body assembly are assembled, and the reliability of the bearing is improved.

Preferably, the inner ring body is provided with a spline groove, and the tail part of the spline groove is in transition connection with the inner hole wall of the inner ring body through a second conical surface of the inner ring and the first circular arc.

This scheme has avoided the length of spline groove to run through whole flange inner race core, adopts the mode smooth transition connection of first conical surface with first circular arc between spline groove afterbody and hole pore wall, and the effect can reduce the length of processing the spline like this, prolongs the life of cutter, saves the cost, the discharge of iron fillings when being convenient for simultaneously process the spline.

Preferably, arc-shaped concave parts are uniformly distributed on the periphery of the inner ring body.

This scheme sets up the circumference that the arc depressed part made the inner circle body and is the wave molding, has certain degree of aesthetic feeling, and this kind of symmetric distribution structure more does benefit to the rotatory dynamic balance characteristic of product, reduces the use of material simultaneously, saves the cost.

The automobile hub bearing unit comprises the flange inner ring, wherein the flange inner ring is movably connected with a flange outer ring through a retainer and a rolling body.

Preferably, the flange outer ring comprises an outer ring body, a first outer ring channel and a second outer ring channel are arranged on the outer ring body, the distance from the second outer ring channel to the center line of the outer ring body is smaller than the distance from the first outer ring channel to the center line of the outer ring body, the second outer ring channel and the first outer ring channel are in transition connection in sequence through a first cylindrical surface, an outer ring second conical surface, a second circular arc and a second cylindrical surface, and the aperture of an inner hole formed by the first cylindrical surface in a surrounding mode is smaller than the aperture of an inner hole formed by the second cylindrical surface in a surrounding mode.

According to the scheme, when the number of two rows of rolling bodies is inconsistent, the distance between the first outer ring channel and the second outer ring channel and the center line of the outer ring body is different, at the moment, the second outer ring channel is in transition connection with the first outer ring channel in sequence through the first cylindrical surface, the second outer ring conical surface, the second circular arc and the second cylindrical surface, the outer ring is convenient to process, the flow of scraps is facilitated, and the processing manufacturability is enhanced.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the conical surface transition design between the inner ring channel and the inner ring shaft shoulder is adopted, so that the inner ring channel and the inner ring shaft shoulder are integrated in a smooth manner, the rigidity of the flange inner ring is increased, the stress concentration at the inner ring shaft shoulder is reduced, the integral weight of the flange inner ring is lightened, meanwhile, the assembly of the retainer and the rolling body is facilitated, the rolling body is prevented from being damaged when the retainer and the rolling body assembly are assembled, the reliability and the material utilization rate of the bearing are improved, and the weight and the cost of the bearing are reduced.

Description of the drawings:

FIG. 1 is a schematic structural view of an inner ring of a flange according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at X;

FIG. 3 is a schematic structural view of an automobile hub bearing according to the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a schematic structural view of the outer ring of the flange in FIG. 4;

fig. 6 is an enlarged view at Y in fig. 5.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The flange inner ring shown in fig. 1-fig. 2 comprises an inner ring body 10, wherein an inner ring channel 11 is arranged on the periphery of the inner ring body 10, the inner ring channel 11 is in transitional connection with an inner ring shoulder 12 through a first conical surface 13, and the end surface diameter of one end, close to the inner ring shoulder 12, of the first conical surface 13 is smaller than that of one end, close to the inner ring channel 11, of the first conical surface 13. Establish spline groove 14 on the inner circle body 10, be convenient for through spline and drive shaft connection, through inner circle second toper face 16 and first circular arc 17 transitional coupling between the afterbody of this spline groove 14 and the hole pore wall 15 of inner circle body 10, set up like this and to reduce the length of processing the spline, make spline length not run through whole flange inner circle core, prolonged the life of key cutter, save the cost, iron fillings are discharged when being convenient for process the spline simultaneously.

Arc depressed parts 18 are uniformly distributed on the periphery of the inner ring body 10, the arc depressed parts 18 enable the circumference of the flange inner ring to be in a wave shape, the arc shape has a certain degree of aesthetic feeling, the symmetrical distribution structure is more beneficial to the rotating dynamic balance characteristic of a product, meanwhile, the use of materials is reduced, and the cost is saved.

As shown in fig. 3-6, the automobile hub bearing unit includes the flange inner ring shown in fig. 1 and fig. 2, the flange outer ring 2 is movably connected to the flange inner ring through a retainer and rolling elements, the flange outer ring 2 includes an outer ring body 20, a first outer ring channel 21 and a second outer ring channel 22 are provided on the outer ring body 20, the retainer and the rolling elements are in two rows in this embodiment, and the number of the rolling elements in the two rows is different, therefore, the distance from the second outer ring channel 22 to the center line of the outer ring body 20 in this embodiment is smaller than the distance from the first outer ring channel 21 to the center line of the outer ring body 20, the second outer ring channel 22 and the first outer ring channel 21 are in transition connection in sequence through a first cylindrical surface 23, an outer ring second conical surface 24, a second circular arc 25 and a second cylindrical surface 26, the aperture of the inner hole formed by the first outer ring channel 23 is smaller than the aperture of the inner hole formed by the second cylindrical surface 26, the arrangement facilitates the outflow of chips during the processing of the outer ring, and the processing manufacturability is enhanced.

The structure not specifically described in the present embodiment may refer to the prior art and will not be described in further detail herein.

The foregoing describes preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (5)

1. The utility model provides a flange inner circle, includes inner circle body (10), and inner circle channel (11) are established to the periphery of this inner circle body (10), its characterized in that: the inner ring channel (11) is in transition connection with the inner ring shaft shoulder (12) through a first conical surface (13), and the diameter of the end face of one end, close to the inner ring shaft shoulder (12), of the first conical surface (13) is smaller than that of the end face of one end, close to the inner ring channel (11), of the first conical surface.

2. The inner ring flange of claim 1, wherein: the inner ring body (10) is provided with a spline groove (14), and the tail part of the spline groove (14) is in transition connection with the inner hole wall (15) of the inner ring body (10) through an inner ring second conical surface (16) and a first circular arc (17).

3. The inner ring flange of claim 1, wherein: arc-shaped concave parts (18) are uniformly distributed on the periphery of the inner ring body (10).

4. An automobile wheel hub bearing unit which is characterized in that: comprising an inner flange ring according to any one of claims 1 to 3, to which an outer flange ring (2) is movably connected by means of a cage and rolling bodies.

5. The automobile hub bearing unit according to claim 4, characterized in that: the flange outer ring (2) comprises an outer ring body (20), a first outer ring channel (21) and a second outer ring channel (22) are arranged on the outer ring body (20), the distance from the second outer ring channel (22) to the central line of the outer ring body (20) is smaller than the distance from the first outer ring channel (21) to the central line of the outer ring body (20), the second outer ring channel (22) and the first outer ring channel (21) are in transition connection in sequence through a first cylindrical surface (23), an outer ring second conical surface (24), a second circular arc (25) and a second cylindrical surface (26), and the aperture of an inner hole formed by the first cylindrical surface (23) in a surrounding mode is smaller than the aperture of an inner hole formed by the second cylindrical surface (26) in a surrounding mode.

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