CN110949061A - Improved motor vehicle aluminum alloy hub - Google Patents
Improved motor vehicle aluminum alloy hub Download PDFInfo
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- CN110949061A CN110949061A CN201911377574.XA CN201911377574A CN110949061A CN 110949061 A CN110949061 A CN 110949061A CN 201911377574 A CN201911377574 A CN 201911377574A CN 110949061 A CN110949061 A CN 110949061A
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- 238000009661 fatigue test Methods 0.000 description 7
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- 238000012360 testing method Methods 0.000 description 7
- 230000003137 locomotive effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000013585 weight reducing agent Substances 0.000 description 3
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- 238000005452 bending Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
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- 241001244708 Moroccan pepper virus Species 0.000 description 1
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- VRAIHTAYLFXSJJ-UHFFFAOYSA-N alumane Chemical compound [AlH3].[AlH3] VRAIHTAYLFXSJJ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
- B60B3/10—Disc wheels, i.e. wheels with load-supporting disc body apertured to simulate spoked wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
- B60B21/02—Rims characterised by transverse section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2360/00—Materials; Physical forms thereof
- B60B2360/10—Metallic materials
- B60B2360/104—Aluminum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/10—Reduction of
- B60B2900/111—Weight
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/30—Increase in
- B60B2900/325—Reliability
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention provides an improved aluminum alloy hub of a motor vehicle, wherein a connecting part of the lower surface of a spoke and the inner surface of a rim defines an annular surface which is concave towards the outer side of the center of a flange, and a line segment which is intersected with a plane passing through the central axis of a flange plate by the annular surface which is concave towards the outer side of the center of the flange consists of an arc line G1, an arc line G2, an arc line G3 and an arc line G4 which are connected in sequence. The improved aluminum alloy hub of the motor vehicle has the advantages that: (1) the stress distribution is more uniform; (2) the whole stress level of the hub is lower; (3) the overall mass of the hub is lower; (4) the hub reliability is higher.
Description
Technical Field
The invention relates to the technical field of motor vehicle parts, in particular to an improved motor vehicle aluminum alloy hub.
Background
The hub, the alias rim, i.e. the part of the tyre inner profile that supports the cylindrical, centrally fitted on the shaft of the tyre. Common automobile hubs include steel hubs and aluminum alloy hubs. The steel hub has high strength and is commonly used for large trucks; however, the steel hub has heavy mass and single appearance, is not in line with the current low-carbon and fashionable concepts, and is gradually replaced by the aluminum alloy hub. Compared with steel automobile hubs, aluminum alloy wheel hub's advantage is more obvious: the density is low, about 1/3 in steel, which means that an aluminum alloy hub using the same volume will be 2/3 lighter than a steel hub. Statistics shows that the whole automobile mass is reduced by 10%, and the fuel efficiency can be improved by 6-8%, so that the popularization of the aluminum alloy hub has important significance for energy conservation, emission reduction and low-carbon life.
In commercial vehicles, such as passenger cars, vans and the like, steel hubs or aluminum alloy forged hubs are often used. However, the existing aluminum alloy forged hub has the characteristics of insufficient strength, unobvious weight reduction effect and the like. In order to realize the wide application of aluminum-aluminum alloy forged hubs, a more excellent hub configuration structure needs to be found.
Disclosure of Invention
It is therefore an object of the present invention to provide an improved aluminium alloy hub for a motor vehicle, which overcomes the above problems.
Unless otherwise specified, "aluminum alloy" in the present invention means an alloy having aluminum as a main alloy material, and is, for example, an a356.2 aluminum alloy, a 7-series aluminum alloy, an 8-series aluminum alloy, or the like. As long as it has been used in the prior art for the forging, casting or other forming of aluminum alloy wheels, it is believed that the aluminum alloy may be selected for the aluminum alloy wheel.
Unless otherwise stated, within the present invention, "hub" is used interchangeably with terms "wheel", "rim", etc., and is intended to refer to devices mounted to the front and rear axles of a motor vehicle for power transmission and roll forward. The outer side of the "hub" typically comprises rubber, resin, leather, plastic, fabric or other material, or a composite of the above materials, such as a tire.
Unless otherwise indicated, the term "hub" as described within the present invention also includes wheels mounted to other locations of the motor vehicle, such as behind the body or under the trunk, for decorative or alternate use, rather than directly to the front and rear axles of the motor vehicle.
Unless otherwise stated, within the present invention, "motor vehicle" means an artificial device operating on the ground by means of a wheel-like structure in all or part of its functional mode. In the narrow definition of terms, "motor vehicle" includes various vehicles such as compact passenger cars, SUVs, MPVs, sports cars, large and medium sized trucks, vans, pickup trucks, vans, tractors, trailers, mining trucks, and the like. In the broad definition of terms, "motor vehicle" also includes an aircraft, a lunar vehicle or other planetary or satellite exploration equipment, an amphibious vehicle, a military armored vehicle, a movable base for large equipment, a girder, a tank, a steam locomotive, an electric locomotive, an internal combustion locomotive, a manual rail engineering vehicle which needs to glide to take off and land on the ground. In the definition of the other terms, "motor vehicle" also includes a rolling device fixed to the ground or to a device. In the environment of the rolling device, the rotation of the hub drives the belt or chain against which it is attached and drives the belt or chain in motion.
In one aspect of the invention, the "aluminum alloy hub for a motor vehicle" comprises a flange plate, a spoke and a rim; the flange is cylindrical, and flange bolt holes penetrating through the bottom surface of the cylinder are uniformly distributed; one end of the inner side of the spoke is connected to the flange plate, and one end of the outer side of the spoke is connected to the rim through the bead seat; the wheel rim comprises an outer wheel lip, an outer wheel lip bead seat, a wheel well, a wheel rim middle section, an inner wheel lip bead seat and an inner wheel lip which are sequentially connected end to end along the direction perpendicular to the plane of the flange plate; the outer wheel lip extends along the outer wheel lip bead seat in the direction away from the flange plate, and the tail end of the outer wheel lip comprises an outer wheel rim; the outer wheel lip bead seat is connected to the outer wheel lip in the outer side direction of the wheel disc, the side face of the outer wheel lip bead seat is connected to the wheel disc, and the inner side direction of the wheel disc is connected to the wheel well; the wheel well is conical or cylindrical and is connected to the middle rim section in the outer side direction of the wheel disc; the middle section of the rim is conical or cylindrical, and is connected with an inner wheel lip bead seat in the outer side direction of the wheel disc; the inner wheel lip bead seats are recessed relative to the inner wheel lip and are connected to the inner wheel lip in the outboard direction of the wheel disc; the inner rim extends away from the central axis of the flange and includes an inner rim at the distal end.
In one aspect of the invention, an improved aluminum alloy hub for a motor vehicle is provided, wherein spokes of the improved aluminum alloy hub define a plurality of circular windows, the spokes are positioned between a flange plate and an outer lip bead seat, the connecting part of the lower surface of the spokes and the inner surface of a rim defines an annular surface which is concave towards the outer side of the center of a flange, and a line segment of the annular surface which is concave towards the outer side of the center of the flange and a plane passing through the central axis of the flange are formed by an arc line G1, an arc line G2, an arc line G3 and an arc line G4 which are connected in sequence; the arc G1 is positioned on one side close to the spoke and is in the shape of an arc sunken towards the outer side of the center of the flange, the radius of the arc G1 is 10.0-20.0 mm, the arc angle is 40.0-70.0 degrees, and two ends of the arc G1 are tangent to the lower surface F0 of the spoke and the arc G2 respectively; the arc G2 is positioned between the arcs G1 and G3 and is in the shape of an arc which is concave towards the outer side of the center of the flange, the radius of the arc is 25.0-35.0 mm, the arc angle is 15.0-45.0 degrees, and two ends of the arc G2 are tangent to the arc G1 and the arc G3 respectively; the arc G3 is positioned between the arcs G2 and G4 and is in the shape of an arc which is concave towards the outer side of the center of the flange, the radius of the arc is 80.0-95.0 mm, the arc angle is 4.0-10.0 degrees, and two ends of the arc G3 are tangent to the arc G2 and the arc G4 respectively; and the arc line G4 is positioned between the arc line G3 and the rim inner surface sectional line L0, is in the shape of a circular arc sunken towards the inner side of the center of the flange, has the radius of 30.0-80.0 mm, has the circular arc angle of 30.0-50.0 degrees, and is tangent to the arc line G3 and the rim inner surface sectional line L0 at two ends of the arc line G4 respectively.
In a preferred aspect of the present invention, the arc line G1 is located on one side close to the spoke, and is a circular arc concave towards the outer side of the center of the flange, the radius of the arc line is 13.0-19.0 mm, the arc angle is 45.0-65.0 degrees, and two ends of the arc line G1 are tangent to the lower surface F0 of the spoke and the arc line G2 respectively.
In a preferred aspect of the present invention, the arc line G2 is located between the arc lines G1 and G3, and is a circular arc concave to the outside of the center of the flange, the radius of the arc line is 28.0-32.0 mm, the arc angle is 20.0-45.0 degrees, and both ends of the arc line G2 are tangent to the arc line G1 and the arc line G3 respectively.
In a preferred aspect of the present invention, the arc line G3 is located between the arc lines G2 and G4, and is a circular arc concave to the outside of the center of the flange, the radius of the arc line is 85.0-95.0 mm, the arc angle is 4.0-9.5 degrees, and both ends of the arc line G3 are tangent to the arc line G2 and the arc line G4 respectively.
In a preferred aspect of the invention, the arc line G4 is located between the arc line G3 and the rim inner surface section line L0, and is a circular arc shape recessed towards the inner side of the flange center, the radius of the arc line is 35.0-65.0 mm, the arc angle is 30.0-42.0 degrees, and two ends of the arc line G4 are tangent to the arc line G3 and the rim inner surface section line L0 respectively.
In a preferred aspect of the invention, the spokes of the improved aluminum alloy hub of the motor vehicle define a plurality of circular windows, the spokes are positioned between the flange plate and the outer wheel lip bead seat, the connecting part of the lower surface of the spokes and the inner surface of the wheel rim defines an annular surface which is concave towards the outer side of the center of the flange, and a line segment of the annular surface which is concave towards the outer side of the center of the flange and is intersected with a plane passing through the central axis of the flange consists of an arc G1, an arc G2, an arc G3 and an arc G4 which are connected in sequence; the arc G1 is positioned on one side close to the spoke and is in a circular arc shape which is concave towards the outer side of the center of the flange, the radius of the arc G1 is 15.3mm, the arc angle is 55.8 degrees, and two ends of the arc G1 are tangent to the lower surface F0 of the spoke and the arc G2 respectively; the arc G2 is positioned between the arcs G1 and G3, is in the shape of an arc which is concave towards the outer side of the center of the flange, has the radius of 30.7 mm and the arc angle of 37.1 degrees, and the two ends of the arc G2 are tangent to the arc G1 and the arc G3 respectively; the arc G3 is positioned between the arcs G2 and G4, is in the shape of an arc which is concave towards the outer side of the center of the flange, has the radius of 94.6mm and the arc angle of 7.7 degrees, and the two ends of the arc G3 are tangent to the arc G2 and the arc G4 respectively; and the arc G4 is positioned between the arc G3 and the rim inner surface section line L0, is in the shape of a circular arc sunken towards the inner side of the center of the flange, has the radius of 36.0 mm, has an arc angle of 40.3 degrees, and has two ends of the arc G4 tangent to the arc G3 and the rim inner surface section line L0 respectively.
In a preferred aspect of the invention, the spokes of the improved aluminum alloy hub of the motor vehicle define a plurality of circular windows, the spokes are positioned between the flange plate and the outer wheel lip bead seat, the connecting part of the lower surface of the spokes and the inner surface of the wheel rim defines an annular surface which is concave towards the outer side of the center of the flange, and a line segment of the annular surface which is concave towards the outer side of the center of the flange and is intersected with a plane passing through the central axis of the flange consists of an arc G1, an arc G2, an arc G3 and an arc G4 which are connected in sequence; the arc G1 is positioned on one side close to the spoke and is in a circular arc shape which is concave towards the outer side of the center of the flange, the radius of the arc G1 is 14.0mm, the arc angle is 61.7 degrees, and two ends of the arc G1 are tangent to the lower surface F0 of the spoke and the arc G2 respectively; the arc G2 is positioned between the arcs G1 and G3, is in the shape of an arc which is concave towards the outer side of the center of the flange, has the radius of 31.0 mm and the arc angle of 23.3 degrees, and the two ends of the arc G2 are tangent to the arc G1 and the arc G3 respectively; the arc G3 is positioned between the arcs G2 and G4, is in the shape of an arc which is concave towards the outer side of the center of the flange, has the radius of 90.0 mm and the arc angle of 5.6 degrees, and the two ends of the arc G3 are tangent to the arc G2 and the arc G4 respectively; and the arc G4 is positioned between the arc G3 and the rim inner surface section line L0, is in the shape of a circular arc sunken towards the inner side of the center of the flange, has the radius of 65.0 mm, has the circular arc angle of 31.2 degrees, and has two ends of the arc G4 tangent to the arc G3 and the rim inner surface section line L0 respectively.
In a preferred aspect of the invention, the spokes of the improved aluminum alloy hub of the motor vehicle define a plurality of circular windows, the spokes are positioned between the flange plate and the outer wheel lip bead seat, the connecting part of the lower surface of the spokes and the inner surface of the wheel rim defines an annular surface which is concave towards the outer side of the center of the flange, and a line segment of the annular surface which is concave towards the outer side of the center of the flange and is intersected with a plane passing through the central axis of the flange consists of an arc G1, an arc G2, an arc G3 and an arc G4 which are connected in sequence; the arc G1 is positioned on one side close to the spoke and is in a circular arc shape which is concave towards the outer side of the center of the flange, the radius of the arc G1 is 18.6mm, the arc angle is 52.8 degrees, and two ends of the arc G1 are tangent to the lower surface F0 of the spoke and the arc G2 respectively; the arc G2 is positioned between the arcs G1 and G3, is in the shape of an arc which is concave towards the outer side of the center of the flange, has the radius of 32.0 mm and the arc angle of 38.2 degrees, and the two ends of the arc G2 are tangent to the arc G1 and the arc G3 respectively; the arc G3 is positioned between the arcs G2 and G4, is in the shape of an arc which is concave towards the outer side of the center of the flange, has the radius of 85.0 mm and the arc angle of 4.7 degrees, and the two ends of the arc G3 are tangent to the arc G2 and the arc G4 respectively; and the arc G4 is positioned between the arc G3 and the section line L0 of the inner surface of the rim, is in the shape of a circular arc sunken towards the inner side of the center of the flange, has the radius of 39.7 mm and the circular arc angle of 40.5 degrees, and the two ends of the arc G4 are tangent to the section lines of the arc G3 and the inner surface L0 of the rim respectively.
The improved aluminum alloy hub of the motor vehicle has the advantages that: (1) the stress distribution is more uniform; (2) the whole stress level of the hub is lower; (3) the overall mass of the hub is lower; (4) the hub reliability is higher.
Drawings
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1: a perspective view of a hub according to embodiment 1 of the present invention.
FIG. 2: a cross-sectional schematic view of a hub of embodiment 1 of the present invention.
FIG. 3: a cross-sectional schematic view of the hub of comparative example 1 of the present invention.
In the figure: 1-flange bolt hole, 2-flange, 3-spoke, 4-rim, 41-outer wheel lip, 42-outer wheel lip bead seat, 43-wheel well, 44-middle rim section, 45-inner wheel lip bead seat and 46-inner wheel lip. F0-arc F0, G1-arc G1, G2-arc G2, G3-arc G3, G4-arc G4, L0-segment L0, M1-arc M1, K1-arc K1, K2-arc K2, K3-arc K3, K4-arc K4, K5-arc K5, K6-arc K6, K7-arc K7 and M2-arc M2.
Detailed Description
Example 1: in the embodiment, an improved aluminum alloy hub of a motor vehicle is disclosed, which comprises a flange plate 2, spokes 3 and a rim 4; the flange 2 is cylindrical, and flange bolt holes 1 penetrating through the bottom surface of the cylinder are uniformly distributed; one end of the inner side of the spoke 3 is connected to the flange plate 2, and one end of the outer side of the spoke is connected to the wheel rim 4 through an outer wheel lip bead seat 42; the rim 4 comprises an outer wheel lip 41, an outer wheel lip bead seat 42, a wheel well 43, a rim middle section 44, an inner wheel lip bead seat 45 and an inner wheel lip 46 which are sequentially connected end to end along the direction perpendicular to the plane of the flange plate 2; the outer wheel lip 41 extends along the outer wheel lip bead seat 42 in a direction away from the flange 2 and includes an outer wheel rim at the end; the outer wheel lip bead seat 42 is connected to the outer wheel lip in the outer side direction of the wheel disc, the side surface of the outer wheel lip bead seat is connected to the wheel disc, and the inner side direction of the wheel disc is connected to the wheel well 43; the wheel well 43 is conical or cylindrical and is connected to the rim middle section 44 in the outer direction of the wheel disc; the rim middle section 44 is conical or cylindrical and is connected to the inner lip bead seat 42 in the outer direction of the wheel disc; the inner lip bead seat 42 is recessed relative to the inner lip 46 and is connected to the inner lip 46 in the outboard direction of the wheel; the inner lip 46 extends away from the central axis of the flange 2 and includes an inner rim at the distal end.
The spoke of the improved aluminum alloy hub of the motor vehicle defines a plurality of circular windows, the spoke is positioned between the flange plate and the outer wheel lip bead seat, the connecting part of the lower surface of the spoke and the inner surface of the wheel rim defines an annular surface which is concave towards the outer side of the center of the flange, and a line segment of the intersection of the annular surface which is concave towards the outer side of the center of the flange and a plane passing through the central axis of the flange consists of an arc line G1, an arc line G2, an arc line G3 and an arc line G4 which are connected in sequence; the arc G1 is positioned on one side close to the spoke and is in a circular arc shape which is concave towards the outer side of the center of the flange, the radius of the arc G1 is 15.3mm, the arc angle is 55.8 degrees, and two ends of the arc G1 are tangent to the lower surface F0 of the spoke and the arc G2 respectively; the arc G2 is positioned between the arcs G1 and G3, is in the shape of an arc which is concave towards the outer side of the center of the flange, has the radius of 30.7 mm and the arc angle of 37.1 degrees, and the two ends of the arc G2 are tangent to the arc G1 and the arc G3 respectively; the arc G3 is positioned between the arcs G2 and G4, is in the shape of an arc which is concave towards the outer side of the center of the flange, has the radius of 94.6mm and the arc angle of 7.7 degrees, and the two ends of the arc G3 are tangent to the arc G2 and the arc G4 respectively; and the arc G4 is positioned between the arc G3 and the rim inner surface section line L0, is in the shape of a circular arc sunken towards the inner side of the center of the flange, has the radius of 36.0 mm, has an arc angle of 40.3 degrees, and has two ends of the arc G4 tangent to the arc G3 and the rim inner surface section line L0 respectively.
Example 2: in this embodiment, the difference from embodiment 1 is that the spokes of the improved aluminum alloy hub of the motor vehicle define a plurality of circular windows, the spokes are positioned between the flange plate and the outer lip bead seat, the connecting part of the lower surfaces of the spokes and the inner surface of the rim defines an annular surface which is concave towards the outer side of the center of the flange, and the line segment of the annular surface which is concave towards the outer side of the center of the flange and the plane passing through the central axis of the flange is formed by an arc line G1, an arc line G2, an arc line G3 and an arc line G4 which are connected in sequence; the arc G1 is positioned on one side close to the spoke and is in a circular arc shape which is concave towards the outer side of the center of the flange, the radius of the arc G1 is 14.0mm, the arc angle is 61.7 degrees, and two ends of the arc G1 are tangent to the lower surface F0 of the spoke and the arc G2 respectively; the arc G2 is positioned between the arcs G1 and G3, is in the shape of an arc which is concave towards the outer side of the center of the flange, has the radius of 31.0 mm and the arc angle of 23.3 degrees, and the two ends of the arc G2 are tangent to the arc G1 and the arc G3 respectively; the arc G3 is positioned between the arcs G2 and G4, is in the shape of an arc which is concave towards the outer side of the center of the flange, has the radius of 90.0 mm and the arc angle of 5.6 degrees, and the two ends of the arc G3 are tangent to the arc G2 and the arc G4 respectively; and the arc G4 is positioned between the arc G3 and the rim inner surface section line L0, is in the shape of a circular arc sunken towards the inner side of the center of the flange, has the radius of 65.0 mm, has the circular arc angle of 31.2 degrees, and has two ends of the arc G4 tangent to the arc G3 and the rim inner surface section line L0 respectively.
Example 3: in this embodiment, the difference from embodiment 1 is that the spokes of the improved aluminum alloy hub of the motor vehicle define a plurality of circular windows, the spokes are positioned between the flange plate and the outer lip bead seat, the connecting part of the lower surfaces of the spokes and the inner surface of the rim defines an annular surface which is concave towards the outer side of the center of the flange, and the line segment of the annular surface which is concave towards the outer side of the center of the flange and the plane passing through the central axis of the flange is formed by an arc line G1, an arc line G2, an arc line G3 and an arc line G4 which are connected in sequence; the arc G1 is positioned on one side close to the spoke and is in a circular arc shape which is concave towards the outer side of the center of the flange, the radius of the arc G1 is 18.6mm, the arc angle is 52.8 degrees, and two ends of the arc G1 are tangent to the lower surface F0 of the spoke and the arc G2 respectively; the arc G2 is positioned between the arcs G1 and G3, is in the shape of an arc which is concave towards the outer side of the center of the flange, has the radius of 32.0 mm and the arc angle of 38.2 degrees, and the two ends of the arc G2 are tangent to the arc G1 and the arc G3 respectively; the arc G3 is positioned between the arcs G2 and G4, is in the shape of an arc which is concave towards the outer side of the center of the flange, has the radius of 85.0 mm and the arc angle of 4.7 degrees, and the two ends of the arc G3 are tangent to the arc G2 and the arc G4 respectively; and the arc G4 is positioned between the arc G3 and the rim inner surface section line L0, is in the shape of a circular arc sunken towards the inner side of the center of the flange, has the radius of 39.7 mm and the circular arc angle of 40.5 degrees, and the two ends of the arc G4 are tangent to the arc G3 and the rim inner surface section line L0 respectively.
Comparative example 1: the difference between the comparative example and the example 1 is that the part of the hub of the comparative example, where the spoke lower surface and the rim inner surface are connected, defines an annular surface which is concave towards the outer side of the center of the flange, and a line segment, which intersects with a plane passing through the central axis of the flange plate, of the annular surface which is concave towards the outer side of the center of the flange consists of an arc line K1, an arc line K2, an arc line K3, an arc line K4, an arc line K5, an arc line K6 and an arc line K7 which are connected in; the arc line K1 is positioned on one side close to the spoke and is in the shape of a circular arc sunken towards the outer side of the center of the flange, the radius of the arc line K1 is 15.0mm, the arc angle is 48.4 degrees, and two ends of the arc line K1 are tangent to the lower surface M1 of the spoke and the arc line K2 respectively; the arc line K2 is positioned between the arc lines K1 and K3, is in the shape of an arc which is concave towards the outer side of the center of the flange, the radius of the arc line K2 is 141.2 mm, the arc angle is 0.9 degrees, and two ends of the arc line K2 are tangent to the arc line K1 and the arc line K3 respectively; the arc line K3 is positioned between the arc lines K2 and K4, is in the shape of an arc which is concave towards the outer side of the center of the flange, the radius of the arc line K3 is 20.0 mm, the arc angle is 40.4 degrees, and two ends of the arc line K3 are tangent to the arc line K2 and the arc line K4 respectively; the arc line K4 is positioned between the arc lines K3 and K5, is in the shape of an arc which is concave towards the outer side of the center of the flange, the radius of the arc line K4 is 507.3 mm, the arc angle is 0.9 degrees, and two ends of the arc line K4 are tangent to the arc line K3 and the arc line K5 respectively; the arc line K5 is positioned between the arc lines K4 and K6, is in the shape of an arc which is concave towards the inner side direction of the center of the flange, the radius of the arc line K5 is 30.0 mm, the arc angle is 11.4 degrees, and two ends of the arc line K5 are tangent to the arc line K4 and the arc line K6 respectively; the arc line K6 is positioned between the arc lines K5 and K7, is in the shape of an arc which is concave towards the outer side of the center of the flange, has the radius of 12.0 mm and the arc angle of 21.4 degrees, and the two ends of the arc line K6 are tangent to the arc line K5 and the arc line K7 respectively; the arc line K7 is located between the arc line K6 and the rim inner surface sectional line M2, is in the shape of a circular arc which is concave towards the inner side direction of the center of the flange, the radius of the arc line K7 is 36.0 mm, the arc angle is 40.3 degrees, and two ends of the arc line K7 are tangent to the arc line K5 and the rim inner surface sectional line M2 respectively. The structures of the wheel rim and the flange are the same as the embodiment.
Example 4: the hubs of examples 1, 2 and 3 and comparative example 1 were subjected to weight measurement, and the results thereof are shown in table 1.
Table 1: weight measurement results (unit: Kg) of examples 1, 2 and 3 and comparative example 1
As can be seen from Table 1, in the case of the structures of the other portions being identical, the weight of examples 1, 2 and 3 was reduced compared to the comparative example, and the weight of example 1 was reduced by 110g compared to comparative example 1.
Example 5: two performance tests and stress level measurements were performed on the hubs of examples 1, 2 and 3 and comparative example 1. The above wheels were subjected to bending fatigue and radial fatigue tests in accordance with the national standard GB/T5909-. Unless otherwise noted, the radial fatigue testing machine used in the present embodiment is also called a wheel radial fatigue testing machine, and is available from jinan permanent testing industrial equipment limited.
Before the radial fatigue test process, the hub is firstly fixed to the radial fatigue test machine, and then the strain gauge is fixed on the front face of the window of the hub and is connected to the data acquisition device through a lead. Then, the loading and the rotation of the fatigue test are carried out according to the method of the national standard GB/T5909-2009. After at least one wheel revolution, the strain gauge transmits strain information (epsilon, dimensionless, in percent) to the data acquisition device. Then according to the stress-strain relationship: σ = E ∈, converting strain into stress (σ is stress, in MPa; E is the elastic modulus, 68980 MPa). The results of their test passability and stress level are shown in table 2.
In this embodiment, the strain gauge is an elastic strain gauge available from Zhongsheng Industrial Electrical measuring instruments, Inc.
The results of their test passability and stress level are shown in table 2.
Table 2: wheel Performance test and stress level measurement (Unit: MPa) of examples 1, 2 and 3 and comparative example 1
Description of the drawings: in the table, Y indicates that the test was passed, and N indicates that the test was not passed.
As can be seen from Table 2, examples 1, 2 and 3 all passed both tests, and comparative example 1 only passed the bending fatigue test.
As can be seen from Table 2, the highest stress level at the junction of the lower spoke surface and the inner rim surface was lower for examples 1, 2 and 3, and higher for comparative example 1. Example 1 the stress was 28.9MPa lower than comparative example 1. It can be seen that the hubs of examples 1-3 achieve stress reduction and weight reduction of the hub by special arrangement of the hub shape. This stress drop was not observed in comparative example 1 having no particular shape.
Example 6: static stiffness measurements were made for the hubs of examples 1, 2 and 3 and comparative example 1. The static stiffness measurements were performed in the test center of the medium-grade kayak corporation for the above wheels according to the method of american wheel engineering association's row standard SAEJ 328. The static stiffness represents the resistance of the wheel to deformation when subjected to static forces, the higher the value, the greater the resistance to deformation, and the higher the reliability of the wheel. The test measurement results are shown in table 3.
Table 3: results of measurement of static rigidity of wheels for examples 1, 2 and 3 and comparative example 1 (unit: kNm/rad)
As can be seen from table 3, examples 1, 2 and 3 all had higher static stiffness values, and comparative example 1 had lower static stiffness values. It is shown that examples 1, 2 and 3 have higher structural stability and higher reliability under the same external force. Comparative example 1 has a low static stiffness value, poor structural stability and low reliability. As can be seen from example 6, weight reduction and improvement in static rigidity were achieved in the wheels of examples 1 to 3, and stronger mechanical strength was achieved without increasing (or even decreasing) the material.
Claims (8)
1. An improved aluminum alloy hub for a motor vehicle, wherein spokes of the improved aluminum alloy hub define a plurality of circular windows, the spokes are positioned between a flange plate and an outer wheel lip bead seat, the connecting part of the lower surface of the spokes and the inner surface of a wheel rim defines an annular surface which is concave towards the outer side of the center of a flange, and a line segment of the annular surface which is concave towards the outer side of the center of the flange and is intersected with a plane passing through the central axis of the flange consists of an arc line G1, an arc line G2, an arc line G3 and an arc line G4 which are connected in sequence; the spoke structure is characterized in that the arc G1 is positioned on one side close to a spoke and is in the shape of a circular arc sunken towards the outer side of the center of the flange, the radius of the arc G1 is 10.0-20.0 mm, the arc angle is 40.0-70.0 degrees, and two ends of the arc G1 are tangent to the lower surface F0 of the spoke and the arc G2 respectively; the arc G2 is positioned between the arcs G1 and G3 and is in the shape of an arc which is concave towards the outer side of the center of the flange, the radius of the arc is 25.0-35.0 mm, the arc angle is 15.0-45.0 degrees, and two ends of the arc G2 are tangent to the arc G1 and the arc G3 respectively; the arc G3 is positioned between the arcs G2 and G4 and is in the shape of an arc which is concave towards the outer side of the center of the flange, the radius of the arc is 80.0-95.0 mm, the arc angle is 4.0-10.0 degrees, and two ends of the arc G3 are tangent to the arc G2 and the arc G4 respectively; and the arc line G4 is positioned between the arc line G3 and the rim inner surface sectional line L0, is in the shape of a circular arc sunken towards the inner side of the center of the flange, has the radius of 30.0-80.0 mm, has the circular arc angle of 30.0-50.0 degrees, and is tangent to the arc line G3 and the rim inner surface sectional line L0 at two ends of the arc line G4 respectively.
2. The improved aluminum alloy hub for motor vehicles as claimed in claim 1, wherein the arc line G1 is a circular arc concave outward from the center of the flange, and has a radius of 13.0-19.0 mm and an arc angle of 45.0-65.0 degrees.
3. The improved aluminum alloy hub for motor vehicles as claimed in claim 1, wherein the arc line G2 is a circular arc concave outward from the center of the flange, and has a radius of 28.0-32.0 mm and an arc angle of 20.0-45.0 degrees.
4. The improved aluminum alloy hub for motor vehicles as claimed in claim 1, wherein the arc line G3 is a circular arc concave outward from the center of the flange, and has a radius of 85.0-95.0 mm and an arc angle of 4.0-9.5 degrees.
5. The improved aluminum alloy hub for motor vehicles as claimed in claim 1, wherein the arc line G4 is a circular arc depressed inward from the center of the flange, and has a radius of 35.0-65.0 mm and an arc angle of 30.0-42.0 degrees.
6. The improved aluminum alloy automotive hub of claim 1, wherein arc G1 has a radius of 15.3mm and a camber angle of 55.8 degrees; the radius of the arc G2 is 30.7 mm, and the arc angle is 37.1 degrees; the radius of the arc G3 is 94.6mm, and the arc angle is 7.7 degrees; the radius of arc G4 is 36.0 mm, and the arc angle is 40.3 degrees.
7. The improved aluminum alloy automotive hub of claim 1, wherein arc G1 has a radius of 14.0mm and a radius angle of 61.7 degrees; the radius of the arc G2 is 31.0 mm, and the arc angle is 23.3 degrees; the radius of the arc G3 is 90.0 mm, and the arc angle is 5.6 degrees; the radius of arc G4 is 65.0 mm, and the arc angle is 31.2 degrees.
8. The improved aluminum alloy automotive hub of claim 1, wherein arc G1 has a radius of 18.6mm and a camber angle of 52.8 degrees; the radius of the arc G2 is 32.0 mm, and the arc angle is 38.2 degrees; the radius of the arc G3 is 85.0 mm, and the arc angle is 4.7 degrees; the radius of arc G4 is 39.7 mm, and the arc angle is 40.5 degrees.
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| US20160001592A1 (en) * | 2013-02-28 | 2016-01-07 | Maxion Wheels Germany Holding Gmbh | Vehicle Wheel for Passenger Cars |
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