CN115556506A - Lightweight spoke and wheel hub of using thereof - Google Patents

Abstract

A lightweight spoke and a hub using the same, comprising an inner frame body, an outer frame body and a plurality of main spokes connected between the inner frame body and the outer frame body, wherein the inner frame body and the outer frame body are in circular arc shape and are coaxially arranged, and the lightweight spoke is characterized in that when viewed along the axial direction, the inner frame body defines a first central angle, the outer frame body defines a second central angle, the first central angle is equal to the second central angle, the first central angle and the second central angle are arranged in a staggered way to form a staggered angle beta, wherein 0 DEG is less than or equal to beta, and the main spokes are arranged in an arc shape; the beneficial technical effects of the invention are as follows: through setting up dislocation arrangement's inner frame body and outer frame body, form the slope arc for the king spoke and arrange and provide the space basis, not arrange perpendicularly between king spoke and inner frame body, the outer frame body, like this when outer frame body receives outside extrusion force, the king spoke can cushion through the ascending elastic deformation of self length direction, and this both protects the king spoke and can let the spoke have certain buffering effect again.

Description

Lightweight spoke and wheel hub of using thereof

Technical Field

The invention relates to the technical field of wheel hubs, in particular to a light composite wheel hub.

Background

As the main market of energy consumption, the automobile industry is seeking a scheme for reducing energy consumption along with the continuous improvement of the requirements of environmental protection, energy conservation and emission reduction. In the existing solution, it is a direct and effective measure to reduce the weight of the automobile, wherein the automobile hub occupies a large proportion in the mass of the whole automobile as a main component of the automobile, and the traditional automobile hub is generally formed by aluminum alloy low-pressure casting. With the continuous progress of the manufacturing technology, it becomes possible to further reduce the quality of the automobile hub by a new technical means.

Disclosure of Invention

In order to solve the above problems, in order to further reduce the weight of the automobile hub, the invention provides a lightweight spoke, which comprises an inner frame body, an outer frame body and a plurality of main spokes connected between the inner frame body and the outer frame body, wherein the inner frame body and the outer frame body are arranged in an arc shape and coaxially, when viewed along the axial direction, a first central angle is defined by the inner frame body, a second central angle is defined by the outer frame body, the first central angle is equal to the second central angle, the first central angle and the second central angle are arranged in a staggered manner to form a staggered angle β, wherein 0 degree is less than or equal to β, and the main spokes are arranged in an arc shape.

The inner frame is a connecting structure of a spoke for connecting a hub internal component (such as a hub core mentioned below), and the inner frame is arc-shaped, and therefore the inner frame geometrically defines a central axis X.

The outer frame is a connecting structure of a spoke for connecting a hub outer component member (such as a rim mentioned below), is also arc-shaped, and also has a central axis X as a geometric central axis. Namely, the inner frame and the outer frame are two arcs concentrically arranged when viewed along the axial direction of the central axis X.

The first central angle is a central angle on a geometric structure defined by the inner frame body, specifically, when viewed along the axial direction of a central axis X, the central axis is taken as the center of a circle, the inner frame body is a section of circular arc formed by rotating a wall body around the center of a circle, and a line segment formed by connecting end points at two ends of the section of circular arc and the center of the circle defines the first central angle; the second central angle can be obtained in the same way.

The first central angle and the second central angle are equal, that is, the central angles corresponding to the arc lengths of the inner frame body and the outer frame body are equal, but the arc lengths of the inner frame body and the outer frame body are unequal due to the fact that the radii of the inner frame body and the outer frame body are different.

The misalignment angle β is a position deviation between a first central angle and a second central angle caused by the inner frame and the outer frame due to the misalignment arrangement, and a specific measurement manner may be an included angle defined by a line segment connecting the same side point of the outer frame and the inner frame with the center of a circle. Typically, the misalignment angle β is greater than or equal to 0, and the common angle ranges are as follows: 20 degrees < beta.is less than or equal to 90 degrees.

In practical applications, the main spokes include at least two main spokes and are respectively connected to two end portions of the inner frame and the outer frame in a corresponding manner, so that the lightweight spokes form a frame-shaped structure. Because the inner frame body and the outer frame body are arranged in a staggered mode, the main spokes form an inclined connection state, and further the main spokes are arc-shaped and protrude towards the outer frame body.

According to the technical scheme, compared with the prior art, the invention has the beneficial technical effects that: firstly, the inner frame body and the outer frame body which are arranged in a staggered mode are arranged, so that a space foundation is provided for the main spoke to form inclined arc arrangement, the main spoke, the inner frame body and the outer frame body are not vertically arranged, and therefore when the outer frame body is subjected to external extrusion force, the main spoke can be buffered through elastic deformation in the length direction of the main spoke, so that the main spoke is protected, and the spoke can have a certain buffering effect; secondly, the spoke of frame form structure has better structural strength, is favorable to guaranteeing its safety in utilization who uses wheel hub. Thirdly, the central angles corresponding to the inner frame body and the outer frame body are equal, and the central angle can be completely removed by 360 degrees, so that when a plurality of spokes are combined to the hub, the inner frame body and the outer frame body can be combined to form a circular frame at the same time, and the installation convenience is greatly improved; fourthly, the arc-shaped main spokes are more attractive, and the equal-divided spokes are favorable for improving the overall attractiveness of the hub.

Further, the main spokes are arc-shaped and convex along the axial direction when being seen perpendicular to the axial direction. This means that the main spokes are three-dimensionally curved, and in one embodiment, the main spokes are convex in the axial direction toward the outside of the hub and toward the rim, which is advantageous in that the main spokes can deform in the direction of the convex portion when subjected to a force, thereby providing better cushioning.

And at least one auxiliary spoke connected to the main spokes to form a net shape. The reticular spoke has high structural strength, can bear larger gravity and is beneficial to improving the use safety of the rim. Furthermore, seen in the axial direction, the auxiliary spokes arranged in an arc shape are concentrically arranged with the projections of the inner frame body and the outer frame body.

With the continuous progress of the technology, the lightweight spoke is formed by 3D printing of titanium alloy, and the titanium alloy has the advantages of low density, high strength and good corrosion resistance, so that the weight of the spoke is effectively reduced, and the structural strength of the spoke is ensured.

The lightweight spoke has the advantages, so the lightweight spoke can be applied to a hub, and the hub comprises a wheel core, a wheel rim and a plurality of lightweight spokes; the lightweight spoke is detachably connected between the wheel core and the wheel rim through screws, wherein the inner frame body is connected to the outer edge of the wheel core, the outer frame body is connected to the inner side wall of the wheel rim, two adjacent inner frame bodies are connected to form an inner circular ring, and two adjacent outer frame bodies are connected to form an outer circular ring. The lightweight spokes are likely to deform when being pressed by the rim, and in order to avoid collision damage of main spokes on two adjacent lightweight spokes, movable gaps are reserved between the main spokes on two adjacent lightweight spokes.

In order to better let the spoke be connected to on the rim, further technical scheme, be provided with inside bellied splice bar on the inside wall of rim still be provided with a plurality of location muscle that erects on the lateral wall of outer frame body, work as outer frame body overlap joint arrives during the splice bar of rim, thereby the location muscle supports and leans on inject on the inside wall of splice bar the spoke outwards slides still be provided with the through-hole on the splice bar, be provided with the screw hole on the outer frame body, the screw passes the through-hole is connected to on the outer frame body.

According to the further technical scheme, the screws for connecting the inner frame body and the wheel core are titanium alloy screws, and the screws for connecting the outer frame body and the wheel rim are common alloy screws.

The invention has the characteristics and advantages, so the invention can be applied to the light composite hub.

Drawings

FIG. 1 is a front view of the hub;

FIG. 2 isbase:Sub>A schematic view of the cross-sectional structure taken along the line A-A of FIG. 1;

FIG. 3 is an exploded view of the hub;

FIG. 4 is a schematic view of the spoke axial direction structure;

FIG. 5 is a structural schematic diagram of the front view direction of the spoke;

FIG. 6 is a side view of the wheel core;

fig. 7 is a schematic view of the structure in the axial direction of the rim.

Detailed Description

The hub structure to which the technical solution of the present invention is applied will be further described with reference to the accompanying drawings. Various implementation details disclosed below may be selectively applied or combined in one embodiment even if not directly related or synergistic in functional terms, except where expressly specified to belong to equivalent or alternative embodiments.

As shown in fig. 1 to 7, the hub is light-weighted and comprises a hub core 1, a rim 2 and a plurality of light-weighted spokes 3; lightweight spoke 3 can dismantle through the screw and be connected to between wheel core 1 and the rim 2, wherein, wheel core 1 arrange in wheel hub's middle part is the circular shape wheel core 1 uses aluminum alloy 6061 to form through forging, be provided with the PCD hole on the wheel core 1, thereby still be provided with a plurality of on the back and subtract heavy groove 11 and alleviate wheel core 1's weight, and wheel core 1's edge still is provided with and is used for connecting wheel core screw hole 12 of spoke 3. In order to reduce the weight of the hub, the rim 2 is made of carbon fiber or other fiber composite materials. The inner side wall of the rim 2 is provided with a connecting rib 21 protruding inwards, and the connecting rib is further provided with a through hole 22 used for connecting the lightweight spoke 3. Lightweight spoke 3 includes interior framework 31 and outer framework 32, interior framework 31 connect in the outward flange of wheel core 1, outer framework 32 connect in the inside wall of rim 2 be provided with on the interior framework 31 with wheel core screw hole 12 assorted inside casing screw hole be provided with on the outer framework 32 with through-hole 22 assorted outside casing screw hole. Since the inner frame 31 and the outer frame 32 have different connection lengths, in order to ensure the connection strength, the screws connecting the inner frame 31 and the wheel core 1 are titanium alloy screws, and the screws connecting the outer frame 32 and the rim 2 are common alloy screws.

In order to better connect the lightweight wheel disc 3 to the wheel rim 2, a further technical scheme is that a plurality of upright positioning ribs 33 are further arranged on the side wall of the outer frame body 32, and when the outer frame body 32 is overlapped to the connecting ribs 21 of the wheel rim 2, the positioning ribs 33 abut against the inner side wall of the connecting ribs 21 so as to limit the lightweight wheel disc 3 to slide outwards.

In order to further reduce the whole weight of wheel hub, lightweight spoke 3 uses titanium alloy 3D to print and forms, and titanium alloy has the advantage that density is low, intensity is high, corrosion resistance is good, has not only effectively reduced the weight of spoke but also guaranteed the structural strength of spoke. The lightweight spoke 3 further comprises a plurality of main spokes 4 connected between the inner frame body 31 and the outer frame body 32, in this embodiment, in order to ensure the structural strength and the bearing effect of the wheel hub, the lightweight spoke 3 is provided with seven main spokes 4 at intervals, and the number of the main spokes 4 can be three, five, eight, nine or more according to the size and the stress requirement of the actual wheel hub. The spoke of frame-shaped structure has better structural strength, and is favorable for ensuring the use safety of the applied hub.

In addition, the inner frame 31 and the outer frame 32 are arc-shaped and coaxially arranged, as shown in fig. 4 and 5, a common central axis of the inner frame 31 and the outer frame 32 is X, when viewed along an axial direction of the central axis X, the inner frame 31 defines a first central angle Φ 1, the outer frame 32 defines a second central angle Φ 2, the first central angle Φ 1 is equal to the second central angle Φ 2 (i.e., Φ 1= Φ 2), the first central angle Φ 1 and the second central angle Φ 2 are arranged in a staggered manner to form a staggered angle β, where 0 ° ≦ β, and the main spoke 4 is arranged in an arc shape. The first central angle Φ 1 is a central angle on a geometric structure defined by the inner frame 31, and specifically, when viewed along the axial direction of the central axis X, the central axis X is taken as a circle center, the inner frame 31 is a segment of circular arc formed by rotating around the circle center, and a line segment formed by connecting end points of two ends of the segment of circular arc and the circle center defines the first central angle Φ 1; the second central angle Φ 2 can also be derived in the same way. Note that the first central angle Φ 1 is equal to the second central angle Φ 2, which means that the central angles corresponding to the arc lengths of the inner frame 31 and the outer frame 32 are equal to each other, but the radii of the inner frame 31 and the outer frame 32 are different from each other, and the arc lengths of the inner frame 31 and the outer frame 32 are also different from each other. Let Φ 1= Φ 2 have a benefit as long as 360 degrees can divide this central angle completely, like this when a plurality of the spoke 3 makes up wheel hub, interior framework 31 can make up with outer framework 32 and form the circle frame, two adjacent interior frameworks 31 link and form the interior ring, two adjacent outer frameworks 32 link and form the outer ring, this improves the convenience of installation greatly.

In order to make the main spokes 4 arranged in an arc shape, the first central angle Φ 1 and the second central angle Φ 2 are arranged in a staggered manner to form the offset angle β, which is an angular position deviation formed by the inner frame 31 and the outer frame 32 due to the staggered arrangement, and a specific measurement manner may be an included angle defined by a line segment connecting the same side end point of the outer frame 32 and the inner frame 31 and the center of a circle. Generally, the angular range of the dislocation angle β is: 20 degrees < beta.is less than or equal to 90 degrees. Through setting up dislocation arrangement interior framework 31 and outer framework 32, do king spoke 4 forms the slope arc and arranges and provide the space basis like this when outer framework 32 receives outside extrusion force, king spoke 4 can cushion through the ascending elastic deformation of self length direction, and this both reduces right king spoke 4 axial impact can let again spoke 3 has certain cushioning effect.

As shown in fig. 4 and 5, the main spokes 4 are arc-shaped and protrude toward the outer frame 32 when viewed along the axial direction of the central axis X. And the main spokes 4 are arc-shaped and convex along the axial direction when viewed in the direction perpendicular to the central axis X. This means that the main spoke 4 is three-dimensionally curved, and in this embodiment, the main spoke 4 is convex toward the outside of the hub and toward the rim 2 along the central axis X, which is advantageous in that the main spoke 4 can deform in the curved direction to achieve better cushioning effect when being stressed.

In addition, after a plurality of the light-weight spokes 3 are combined into a ring, in order to avoid the main spokes 4 on two adjacent light-weight spokes 3 from colliding and damaging, a movable gap is left between the main spokes 4 on two adjacent light-weight spokes 3.

Further, in order to further enhance the structural strength of the lightweight spoke 3, at least one sub spoke 5 is further included, and the sub spoke 5 is connected to the plurality of main spokes 4 to form a net shape. In this embodiment, the number of the secondary spokes 5 is two, and of course, the number of the secondary spokes 5 may be three, four, five or more according to the size and the stress requirement of the actual hub. The reticular spoke has higher structural strength, can bear larger gravity and is beneficial to improving the use safety of the hub. Further, the auxiliary spokes 5 follow the arrangement shape of the main spokes 4, but the auxiliary spokes 5 arranged in an arc shape are arranged concentrically with the projections of the inner and outer frames 31, 32 when viewed in the axial direction, that is, the central axis of the auxiliary spokes 5 is also the central axis X.

Claims (10)

1. The utility model provides a lightweight spoke, includes interior framework, outer framework and connect in a plurality of king spokes between interior framework and the outer framework, interior framework and outer framework are circular-arc and coaxial arrangement, its characterized in that, look along the axial direction, first central angle is defined to interior framework, outer framework defines the second central angle, first central angle equals with the second central angle, thereby first central angle and second central angle dislocation arrangement form dislocation angle beta, wherein 0 ≦ beta, king spokes is arc arrangement.

2. The lightweight wheel spoke according to claim 1, wherein 20 ° < β ≦ 90 °.

3. The lightweight spoke according to claim 1, wherein the king spoke is arcuate in shape and convex in the axial direction as viewed perpendicular to the axial direction.

4. The light weight spoke according to claim 1, further comprising at least one sub-spoke connected to the plurality of main spokes to form a web.

5. The lightweight spoke according to claim 4, wherein the sub-spokes arranged in an arc shape are arranged concentrically with a projection of the inner and outer frames as viewed in the axial direction.

6. The lightweight spoke according to any one of claims 1 to 5, wherein the lightweight spoke is formed by 3D printing of a titanium alloy.

7. A hub is characterized by comprising a hub core, a rim and a plurality of lightweight spokes according to any one of claims 1 to 5; the lightweight spoke is detachably connected between the wheel core and the wheel rim through screws, wherein the inner frame body is connected to the outer edge of the wheel core, the outer frame body is connected to the inner side wall of the wheel rim, two adjacent inner frame bodies are connected to form an inner circular ring, and two adjacent outer frame bodies are connected to form an outer circular ring.

8. The hub of claim 7, wherein the inner sidewall of the rim is provided with a connecting rib protruding inward, the sidewall of the outer frame is further provided with a plurality of positioning ribs standing up, when the outer frame is overlapped with the connecting rib of the rim, the positioning ribs abut against the inner sidewall of the connecting rib to limit the spoke to slide outward, the connecting rib is further provided with a through hole, and the outer frame is provided with a screw hole through which a screw passes to be connected to the outer frame.

9. The hub of claim 7, wherein a clearance gap is left between the main spokes of two adjacent lightweight spokes.

10. The hub of claim 7, wherein the screws connecting the inner frame to the wheel core are titanium alloy screws, and the screws connecting the outer frame to the wheel rim are common alloy screws.

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