CN102285304A

CN102285304A - Hub

Info

Publication number: CN102285304A
Application number: CN2011101497944A
Authority: CN
Inventors: 何灿东
Original assignee: NINGBO CANDONG MOLD TECHNOLOGY Co Ltd
Current assignee: NINGBO CANDONG MOLD TECHNOLOGY Co Ltd
Priority date: 2011-06-01
Filing date: 2011-06-01
Publication date: 2011-12-21

Abstract

The invention provides a hub. The hub comprises a rim (1), a plurality of spokes (2) and a mounting flange (3), wherein one ends of the plurality of spokes (2) are fixedly connected with the rim (1) and the other ends of the plurality of spokes (2) are fixedly connected with the mounting flange (3); the plurality of spokes (2) are uniformly distributed along the inner circumferential surface of the rim (1); the joints of at least two spokes (2) and the inner circumferential surface of the rim (1) are provided with hollow structures; and the openings of the hollow structures are arranged on the outer circumferential surface of the rim (1). Compared with the prior art, the hub has the characteristics of fewer casting defects at the angles R, higher yield, better mechanical performances at the angles R, better use safety and shorter production period.

Description

Wheel hub

Technical field:

The invention belongs to the vehicular spare parts field, particularly relate to a kind of wheel hub.

Background technology:

At present, the wheel hub of prior art comprises wheel rim, spoke and mounting flange, and wheel rim is used to install tire, and mounting flange is used for wheel hub is installed in vehicle, and spoke is used to connect wheel rim and mounting flange; Spoke and wheel rim junction are commonly referred to as place, R angle, and so the wall thickness thicker relatively (being also referred to as hypertrophy) at this place, R angle is when casting, place, R angle is exactly thermal center point place, and rate of cooling is slower during cooling, causes casting loose easily, and leak gas easily and cause product rejection, reject rate is higher; Simultaneously the long crystal grain at place, R angle that causes again of hardening time is thicker, and then the mechanical property at place, R angle is relatively poor, rupture easily and lost efficacy, so the safety of using is relatively poor, and hardening time length cause the production cycle longer.

Summary of the invention:

The present invention is directed to above problem and provide that a kind of R angle place foundry defect is less, yield rate is higher, place, R angle mechanical property is better, safety in utilization better reaches short wheel hub of production cycle.

The present invention overcomes the above problems used technical scheme: a kind of wheel hub with following structure is provided, it comprises wheel rim, many spokes and mounting flange, described many spokes one end is all captiveed joint with wheel rim, the many spoke other ends are all captiveed joint with mounting flange, described many spokes are along the inner peripheral surface rectangular distribution of wheel rim, the junction of at least two spokes and wheel rim inner peripheral surface is a hollow structure, and the opening of hollow structure is on the outer circumference surface of wheel rim.

After adopting above structure, compared with prior art, the present invention is owing to the junction of at least two spokes and wheel rim inner peripheral surface is that hollow structure is that place, R angle is hollow structure, the opening of hollow structure is on the outer circumference surface of wheel rim, then make the wall thickness attenuation at R angle place and evenly, and then make the R angle no longer become the thermal center point when being in casting, rate of cooling is also just very fast, crystallization rate is also just very fast, and crystalline quality is better, so the crystal grain formation time is shorter, crystal grain is less, comprehensive mechanical property is also just better, and it is higher to be difficult for producing loose yield rate, and place, R angle has toughness preferably, it is better to bear stronger external impacts safety in utilization, shock-absorbing and damping effect are better, and rate of cooling is fast certainly, and the production cycle is also just shorter.So the present invention has, and place, R angle foundry defect is less, yield rate is higher, place, R angle mechanical property is better, safety in utilization better reaches short characteristics of production cycle.

As improvement, described at least two spokes are along wheel rim inner peripheral surface rectangular distribution, make projection on the hub mold along the die cavity rectangular distribution, then the dynamic stability when the matched moulds and the demoulding is better, the demoulding easily, casting accuracy is higher, and then makes that the yield rate of product is higher; Otherwise the projection on the mould is asymmetric, and when the demoulding, the dynamical equilibrium that the mould each several part moves is relatively poor, causes demoulding failure easily, and then produces waste product, and destroys mould, causes unnecessary loss.

As further improvement, described at least two spokes and wheel rim bonded assembly one end are hollow structure, this hollow structure and at least two spokes are communicated with the hollow structure of wheel rim inner peripheral surface junction, then the wall thickness that is arranged so that place, R angle of hollow structure spoke is more even, cooling performance is better, and then make crystal grain more tiny, mechanical property is better, toughness and circulation moment properties make the present invention to bear higher impact force and are indeformable preferably, have the performance of better shock-absorbing and damping simultaneously.

Description of drawings:

Fig. 1 is the structural representation of wheel hub of the present invention.

Fig. 2 is the sectional structure scheme drawing along A-A line among Fig. 1.

Fig. 3 is the semi-sictional view structural representation along B-B line among Fig. 1.

As shown in the figure: 1, wheel rim, 2, spoke, 3, mounting flange.R is place, R angle

The specific embodiment:

Below in conjunction with the drawings and specific embodiments, the present invention is described further:

Embodiment one

As Fig. 1, Fig. 2 and a kind of wheel hub shown in Figure 3, it comprises wheel rim 1, many spokes 2 (this example is eight) and mounting flange 3, described many spokes 2 one ends are all captiveed joint with wheel rim 1, many spoke 2 other ends are all captiveed joint with mounting flange 3, described many spokes 2 are along the inner peripheral surface rectangular distribution of wheel rim 1, (this example is four at least two spokes 2, down together) junction with wheel rim 1 inner peripheral surface is a hollow structure, also can be regarded as R angle place and be hollow structure, the opening of hollow structure be wheel rim 1 on the outer circumference surface of wheel rim 1 with periphery that tire contacts on.

Described at least two spokes 2 are along wheel rim 1 inner peripheral surface rectangular distribution.Then the spoke 2 of hollow structure along wheel rim 1 inner peripheral surface rectangular distribution be for wheel hub in when casting, the mould structure that uses is simpler, symmetry is better, and is easier to the demoulding, otherwise mould is asymmetric, when the demoulding, the dynamical equilibrium that the mould each several part moves is relatively poor, causes demoulding failure easily, and then produces waste product, and the destruction mould, cause unnecessary loss.

Described at least two spokes 2 are hollow structure with wheel rim 1 bonded assembly one end, and this hollow structure and at least two spokes 2 are communicated with the hollow structure of wheel rim 1 inner peripheral surface junction.

Embodiment two

A kind of wheel hub, it comprises wheel rim 1, many spokes 2 (this example is eight) and mounting flange 3, described many spokes 2 one ends are all captiveed joint with wheel rim 1, many spoke 2 other ends are all captiveed joint with mounting flange 3, described many spokes 2 are along the inner peripheral surface rectangular distribution of wheel rim 1, (this example is two at least two spokes 2, down together) junction with wheel rim 1 inner peripheral surface is a hollow structure, also can be regarded as R angle place and be hollow structure, the opening of hollow structure be wheel rim 1 on the outer circumference surface of wheel rim 1 with periphery that tire contacts on.

Described few two spokes 2 are along wheel rim 1 inner peripheral surface rectangular distribution.

Embodiment three

A kind of wheel hub, it comprises wheel rim 1, many spokes 2 (this example is the six roots of sensation) and mounting flange 3, described many spokes 2 one ends are all captiveed joint with wheel rim 1, many spoke 2 other ends are all captiveed joint with mounting flange 3, described many spokes 2 are along the inner peripheral surface rectangular distribution of wheel rim 1, (this example is three at least two spokes 2, down together) junction with wheel rim 1 inner peripheral surface is a hollow structure, also can be regarded as R angle place and be hollow structure, the opening of hollow structure be wheel rim 1 on the outer circumference surface of wheel rim 1 with periphery that tire contacts on.

Above embodiment only is preferred embodiment of the present invention, and the present invention is not limited only to above embodiment and also allows other structural change, allly changes in rights to independence claimed range of the present invention, all belongs to protection domain of the present invention.

Claims

1. wheel hub, it comprises wheel rim (1), many spokes (2) and mounting flange (3), described many spokes (2) one ends are all captiveed joint with wheel rim (1), many spokes (2) other end is all captiveed joint with mounting flange (3), described many spokes (2) are along the inner peripheral surface rectangular distribution of wheel rim (1), it is characterized in that: at least two spokes (2) are hollow structure with the junction of wheel rim (1) inner peripheral surface, and the opening of hollow structure is on the outer circumference surface of wheel rim (1).

2. wheel hub according to claim 1 is characterized in that: described at least two spokes (2) are along wheel rim (1) inner peripheral surface rectangular distribution.

3. wheel hub according to claim 1 is characterized in that: described at least two spokes (2) are hollow structure with wheel rim (1) bonded assembly one end, and this hollow structure and at least two spokes (2) are communicated with the hollow structure of wheel rim (1) inner peripheral surface junction.