CN212386233U - Combined hub - Google Patents

Abstract

The utility model discloses a combined hub, which comprises a rim and a spoke which are arranged in a split way, wherein an insert is arranged on the inner surface of the rim in a protruding way, the insert and the rim are fixed relatively into a whole, the spoke is cast and molded on the basis of the rim, the spoke wraps the insert, and the spoke and the rim are fixed into a whole after cooling and solidification; the utility model provides a rim and spoke independent processing process earlier go out the rim, and casting process spoke on the basis of rim again, the whole of rim and spoke constitutes wheel hub, the utility model discloses a wheel hub of split type structure needn't wholly scrap when appearing the defect on the rim, help promoting the yield, reduce the process flow for welded forming's mode.

Description

Combined hub

Technical Field

The utility model relates to a wheel technical field further relates to a modular wheel hub.

Background

The front wheel hub of the existing electric moped generally has two processing technologies, one is an aluminum wheel hub which is cast and formed, aluminum alloy is cast and formed integrally, and the whole is made of aluminum alloy; the other is an iron hub welded and combined, and is formed by welding and fixing a spinning-formed rim, a punched and stretched spoke, a brake pad, a brake bowl pad, a pipe and the like.

The cast aluminum hub has the problems that the air hole defect and the like are easy to occur at the rim part due to casting pressure, a die and other factors in the production process. The air hole problem can be detected only after the product is subjected to metal processing, the tiny air holes can be subjected to leak repairing treatment, the big air holes can only be scrapped, and the production cost is high.

The welded and combined iron hub is formed by independently punching and forming a plurality of accessories such as a rim, a spoke, a brake pad, a brake bowl sheet, a pipe and the like, and then is welded and combined, so that the production process is complex, various accessories are required to be welded and fixed, the welding points of the product are more, and the attractiveness of the product is influenced; after welding, residual stress can be generated to influence the material performance and reduce the material strength.

For those skilled in the art, how to improve the yield and reduce the processing flow is a technical problem to be solved at present.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a modular wheel hub promotes the yield through adopting split type structural design, reduces the process flow, and concrete scheme is as follows:

the utility model provides a combined type wheel hub, rim and spoke including the components of a whole that can function independently setting, the internal surface protrusion of rim sets up the inserts, the spoke is in cast moulding on the basis of rim, the spoke will including the inserts parcel, the spoke with the rim is fixed to be formed integratively.

Optionally, the rim is stamped and formed from steel plate, and the spokes are cast and formed from aluminum alloy.

Optionally, the insert is connected to the rim at one end with a dimension greater than a dimension of the tip.

Optionally, the insert is provided with a step of abrupt size change.

Optionally, the insert is welded to the rim.

Optionally, the inner surface of the rim is provided with at least two of said inserts.

The utility model provides a combined hub, which comprises a rim and a spoke which are arranged in a split way, wherein an insert is arranged on the inner surface of the rim in a protruding way, the insert and the rim are fixed relatively into a whole, the spoke is cast and molded on the basis of the rim, the spoke wraps the insert, and the spoke and the rim are fixed into a whole after cooling and solidification; the utility model provides a rim and spoke independent processing process earlier go out the rim, and casting process spoke on the basis of rim again, the whole of rim and spoke constitutes wheel hub, the utility model discloses a wheel hub of split type structure needn't wholly scrap when appearing the defect on the rim, help promoting the yield, reduce the process flow for welded forming's mode.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1A is an axonometric view of a specific structure of the combined hub provided by the present invention;

FIG. 1B is a front view of the structure shown in FIG. 1A;

FIG. 1C is a cross-sectional view taken along line A-A of FIG. 1B;

FIG. 2 is a perspective view of a rim;

FIG. 3A is an isometric view of a casting mold;

FIG. 3B is a cross-sectional view of the casting mold mated with the rim;

fig. 3C and 3D are structural views of the upper die and the lower die, respectively.

The figure includes:

rim 1, spoke 2, insert 3.

Detailed Description

The core of the utility model lies in providing a modular wheel hub promotes the yield through adopting split type structural design, reduces the processing procedure.

In order to make those skilled in the art better understand the technical solution of the present invention, the following will describe the combined hub in detail with reference to the accompanying drawings and the specific embodiments.

As shown in fig. 1A, an axonometric view of a specific structure of the combined hub provided by the present invention includes a rim 1 and a spoke 2 which are separately arranged, fig. 1B is a front view of the structure shown in fig. 1A, and fig. 1C is a sectional view in a direction of a-a in fig. 1B; the rim 1 is circular, the outside of the rim is used for sleeving a tire, and the rim 1 is a structure which is independently processed and manufactured; as shown in fig. 2, is an axis-measuring structure view of the rim 1; the inner surface of the rim 1 is convexly provided with an insert 3, the rim 1 is placed into a casting mold before the spoke 2 is processed, metal melt is injected into the casting mold, and the spoke 2 is cast and molded on the basis of the rim 1; the insert 3 is wrapped in the cast spoke 2, the spoke 2 and the rim 1 are fixedly integrated, and the spoke 2 and the rim 1 are connected more firmly through the insert 3; the insert 3 protrudes out of the inner surface of the rim 1, and the insert 3 can bear the rotating torque between the spoke 2 and the rim 1 when the hub rotates, so that the spoke 2 and the rim 1 are prevented from being separated from each other.

The utility model adopts the wheel hub with the split structure, the rim is independently processed firstly, then the spoke is cast on the basis of the rim, finally the rim and the spoke are relatively fixed into a whole, when the rim has defects, the whole rim is not required to be scrapped, which is helpful for improving the yield; and compared with a welding forming mode, the processing flow is reduced.

On the basis of the scheme, the rim 1 in the utility model is formed by punching a steel plate, the spoke 2 is formed by casting an aluminum alloy, the rim 1 is formed by punching the steel plate, and compared with the rim formed by casting the aluminum alloy, the rim formed by casting the aluminum alloy can effectively prevent the air holes and improve the yield; the rim made of steel has higher strength relative to an aluminum alloy rim, the overall weight of the hub is reduced, and the cruising ability of the vehicle is improved.

The spoke adopts the aluminum alloy casting shaping, can reduce wheel hub's weight, compares in the complicated welding process of steel spoke, has greatly reduced manufacturing cost, and the spoke adopts the mode of whole casting not to have the welding seam, promotes the outward appearance quality.

The utility model discloses with the spoke intercombination that steel rim and aluminum alloy were made, integrated the advantage of two kinds of materials, not only guaranteed the rim disappearance gas pocket, improve the yields, still reducible manufacturing procedure helps promoting machining efficiency.

Preferably, the utility model provides an one end size that inserts 3 and rim 1 are connected is greater than terminal size, has the effort of mutual contact between inserts 3's the side and the spoke 2, prevents effectively that the alternate segregation between inserts 3 and the spoke 2.

Specifically, the utility model provides an inserts 3 is equipped with the step of size sudden change, and the position that has a size sudden change on inserts 3 at least forms the step face also, and the less one end of size is fixed on rim 1, and inside the great one end of size stretched into spoke 2, and inside its inside die cavity that matches each other with inserts 3 that forms when spoke 2 casting cooling back, made spoke 2 and inserts 3 clamp each other just.

The insert 3 in the utility model is welded and fixed on the rim 1, the insert 3 and the rim 1 are independently processed, and the processing procedures are reduced by mutual assembly through welding; the insert 3 and the rim 1 are made of the same material and are made of steel, and the firmness of connection of the insert and the rim is guaranteed after welding.

In order to ensure the firm connection between the rim 1 and the spokes 2, the inner surface of the rim 1 is provided with at least two inserts 3, which are arranged at corresponding positions according to the specific form of the wheel spoke.

The combined hub is processed by the following steps:

s1, stamping the rim 1 by using a steel plate; the rim 1 and the spoke 2 are processed relatively independently, and specifically, the rim 1 can be formed by spinning a steel plate.

S2, welding and fixing the insert 3 on the inner surface of the rim 1; the insert 3 can also be formed by punching a steel plate, the insert 3 and the rim 1 are relatively fixed into a whole, and the insert 3 protrudes out of the inner surface of the rim 1.

S3, placing the rim 1 into a casting mold, wherein the casting mold is in sealing contact with the inner surface of the rim 1; fig. 3A is an isometric view of a casting mold, wherein B denotes an upper mold, C denotes a lower mold, and a rim 1 is clamped between the upper mold and the lower mold, and an inner surface of the rim 1 is in sealing contact with the upper mold and the lower mold, so that molten metal does not flow out, and fig. 3B is a sectional view of the casting mold in cooperation with the rim 1.

S4, injecting the aluminum alloy melt into the casting mold to enable the fixed insert 3 to be wrapped in the aluminum alloy melt, and cooling and forming; the casting process uses a low-pressure casting machine, the shape of a cavity in the casting die is the shape of the spoke, the internal cavity of the casting die is filled with the molten metal, the molten aluminum alloy is cooled and solidified to form the spoke, and the spoke and the rim are relatively fixed into a whole to form the integral hub.

Specifically, the utility model discloses a cooling shaping process includes:

and keeping the pressure for 5-10 s after the cavity is filled with the aluminum alloy melt.

Injecting an aluminum alloy melt into a casting mold, comprising:

and injecting the 650-700 ℃ aluminum alloy melt into the mold from bottom to top.

The utility model discloses a processing technology adopts low pressure center pouring technology, and the aluminum alloy melts liquid and fills the type from the center of spoke, works as the sprue gate with the spoke center, and the aluminum alloy melts liquid and is full of around the inserts 3 that rim plate, spoke and rim internal surface set up in proper order.

As shown in fig. 3C and 3D, which are structural views of the upper mold and the lower mold, respectively; the lower die is provided with a sliding block and can slide in a translation way through the sliding block, when the lower die is used, the lower die can slide transversely and be staggered with the upper die, a rim is placed in the lower die, a fixing sheet on the rim is clamped on a positioning hole of the lower die, then the lower die is pushed back reversely, so that the lower die corresponds to the upper die, and the lower die and the upper die are matched; the upper die is always fixed.

And melting the aluminum alloy material into liquid at 650-700 ℃, injecting the aluminum alloy melt upwards from the lower die, keeping the pressure for 5-10 seconds after the die cavity is filled with the melt, completing the manufacture of the blank, and then performing metal processing.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. The utility model provides a modular wheel hub, its characterized in that, rim (1) and spoke (2) including the components of a whole that can function independently setting, the internal surface protrusion of rim (1) sets up inserts (3), spoke (2) are in cast moulding on the basis of rim (1), spoke (2) will including inserts (3) parcel, spoke (2) with rim (1) is fixed to be formed integratively.

2. Combined hub according to claim 1, wherein the rim (1) is stamped and formed from sheet steel and the spokes (2) are cast and formed from an aluminium alloy.

3. Combined hub according to claim 2, in which the insert (3) is connected to the rim (1) with one end having a greater dimension than the other.

4. A modular hub according to claim 3, wherein the insert (3) is provided with a step of abrupt size change.

5. Combined hub according to claim 2, wherein the insert (3) is welded on the rim (1).

6. Combined hub according to claim 2, wherein the inner surface of the rim (1) is provided with at least two inserts (3).

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