WO2017142146A1 - 차량용 휠 - Google Patents
차량용 휠 Download PDFInfo
- Publication number
- WO2017142146A1 WO2017142146A1 PCT/KR2016/009566 KR2016009566W WO2017142146A1 WO 2017142146 A1 WO2017142146 A1 WO 2017142146A1 KR 2016009566 W KR2016009566 W KR 2016009566W WO 2017142146 A1 WO2017142146 A1 WO 2017142146A1
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- WIPO (PCT)
- Prior art keywords
- bead
- vehicle wheel
- well
- thickness
- tire
- Prior art date
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Classifications
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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
- B60B21/023—Rims characterised by transverse section the transverse section being non-symmetrical
-
- 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
-
- 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
- B60B21/026—Rims characterised by transverse section the shape of rim well
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
- B60B21/10—Rims characterised by the form of tyre-seat or flange, e.g. corrugated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
- B60B21/10—Rims characterised by the form of tyre-seat or flange, e.g. corrugated
- B60B21/102—Rims characterised by the form of tyre-seat or flange, e.g. corrugated the shape of bead seats
-
- 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
-
- 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
- B60B2900/131—Vibrations
-
- 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
- B60B2900/133—Noise
-
- 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
- B60B2900/311—Rigidity or stiffness
-
- 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
- B60B2900/50—Improvement of
- B60B2900/521—Tire mounting or removal
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Definitions
- the present invention relates to a wheel for a vehicle, and more particularly, to a wheel for a vehicle that can reduce the noise and vibration generated during driving and to ensure rigidity.
- the vehicle wheel comprises a material such as steel or aluminum.
- a vehicle wheel is fixed to a wheel hub of a vehicle consisting of a brake drum or a brake disc.
- a wheel for a vehicle applies a design change such as applying a lightweight aluminum or reducing the thickness.
- Korean Patent Laid-Open Publication No. 10-2006-0044653 (hereinafter referred to as 'prior document 1') discloses a technique of forming a hollow chamber on a rim to reduce weight and block noise.
- Korean Laid-Open Patent Publication No. 10-2007-0053386 discloses a technology of absorbing noise and vibration by forming a hollow chamber on a rim and filling an aluminum foam core thereto.
- the technique of forming a hollow in the rim and spokes and filling the foam core therewith has a higher sound absorption effect than the prior art document 1, but has a problem in that the effect of weight reduction is limited.
- the conventional vehicle wheel includes a rim 3 extending in one direction from the outer circumferential surface of the disk member 2, and the outer circumferential surface of the rim 3 as shown in FIG.
- the tire 1 is mounted.
- the outer bead 1a of one end of the bead 1a, 1b of both ends of the tire 1 is seated on the outer bead seat 3a of the rim 3 which forms the outer surface of the disk member 2,
- the inner bead 1b at the end is seated on the inner bead sheet 3b formed at the free end of the rim 3.
- the rim portion 3 is formed with a different thickness of the well portion 31 and the inner bead sheet 3b protruding from the disk member 2, the well portion 31 is formed on the outer side extending from the outer bead sheet 3a And a well portion 31a and an inner well portion 31b extending from the inner bead sheet 3b and connected to the outer well portion 31a.
- the inner well portion 31b is bent outwardly from the outer well portion 31a to be inclined. Is formed.
- the thickness of the well portion 31 and the inner bead sheet 3b formed as described above is such that the inner bead sheet 3b having the inner bead 1b of the tire 1 is formed to have the thickest thickness, and the outer bead sheet 3a is formed.
- the outer well portion 31a which extends from and protrudes, is then formed to a thicker thickness, and the inner well portion 31b between the outer well portion 31a and the inner bead sheet 3b is formed to the thinnest thickness.
- the wheel for the vehicle formed as described above receives a load corresponding to the weight of the vehicle while driving, and the loads F1 and F2 transmitted to the wheel are both beads 1a and 1b of the tire 1 as shown in FIG. 2. Is delivered through).
- the loads F1 and F2 transmitted through the tire 1 act on the outer bead seat 3a of the rim 3 via the outer bead 1a of the tire 1.
- the inner bead 1b of the tire 1 acts on the inner bead sheet 3b of the rim 3, respectively, and the outer bead sheet 3a and the inner bead sheet 3b of the rim 3 Reaction force (R1) (R2) for each will act.
- reaction force R2 against the load F2 acting on the inner bead sheet 3b of the rim portion 3 is transferred to the outer well portion 31a whose one end is connected to the outer bead sheet 3a. Act as').
- reaction force (R1) acts in a direction opposite to the load (F1) against the load (F1) acting on the outer bead sheet (3a) acts as a reaction / reaction, but acts on the inner bead sheet (3b) With respect to the load F2, the reaction force R2 against the load F2 is transferred to the reaction force R2 'of the outer well part 31a and acts.
- the deformation amount ⁇ 1 is generated on the inner bead sheet 3b side, and the deformation amount ⁇ 1 is smaller than the thickness of the inner bead sheet 3b because the thickness of the outer well part 31a is relatively small, so that the supporting surface as the fixed end is small. Therefore, deformation occurs from the fixed end of the outer well part 31a, so that the overall deformation amount ⁇ 1 becomes large, and the vibration corresponding to the deformation amount ⁇ 1 is transmitted to the hub of the vehicle through the spoke part 22 of the vehicle wheel. There was a problem that is transmitted to the) side as it is caused by the vibration and noise of the vehicle. Therefore, there is a need for improvement.
- the present invention has been made to improve the above problems, by providing a vehicle wheel that can reduce the vibration and noise transmitted to the vehicle by varying the thickness of the outer well portion, the inner well portion and the second bead sheet forming the rim portion. Its purpose is to.
- Another object of the present invention to provide a vehicle wheel that can minimize the amount of deformation of the rim by forming an inclined inner well portion extending from the outer well portion in multiple stages.
- a vehicle wheel includes: a disk member to which an axle is connected; And a rim portion connected to the disc member and to which the tire is mounted, wherein the rim portion includes: a first tire mounting portion connected to the disc member and including a first bead sheet in contact with an outer bead of the tire; A second tire mounting part positioned to be spaced apart from the first tire mounting part and including a second bead sheet in contact with the inner bead of the tire; And a well part including an outer well part extending from the first tire mounting part, and an inner well part connecting the outer well part and the second tire mounting part, wherein the outer well part, the second bead sheet, and the inner well part are in order. It is characterized in that the thickness becomes thin while proceeding.
- the first tire mounting portion protruding from the first bead sheet, in contact with the outer bead, the first movement limiting portion for limiting the movement of the outer bead;
- a well wall portion extending from the first bead sheet or the first movement limiting portion and connected to the outer well portion.
- the first movement limiting portion protruding from the first bead sheet, in contact with the outside of the outer bead, the first rim flange for limiting the outer movement of the outer bead; And a first hump that protrudes from the first bead sheet and contacts the inner side of the outer bead to limit the inner movement of the outer bead.
- the second tire mounting portion protrudes from the second bead sheet, the second movement limiting portion for contacting the inner bead to limit the movement of the inner bead; characterized in that it further comprises a.
- the second movement limiting portion protruding from the second bead sheet, in contact with the outside of the inner bead, the second rim flange to limit the outside movement of the inner bead; And a second hump that protrudes from the second bead sheet and contacts the inner side of the inner bead to limit the inner movement of the inner bead.
- the thickness of the outer well portion is characterized in that 1.2 ⁇ 1.8 times the thickness of the second bead sheet.
- the thickness of the outer well portion is characterized in that 1.2 ⁇ 2.5 times the thickness of the inner well portion.
- the thicknesses of the outer well portion, the inner well portion, and the second bead sheet are 6.0 to 9.1 mm, 3.3 to 5.5 mm, and 4.0 to 7.5 mm, respectively.
- the thickness of the inner well portion is greater than the difference between the thickness of the outer well portion and the second bead sheet.
- the inner well portion characterized in that the inclined to the outside of the outer well portion relative to the center of rotation of the disk member.
- the inner well portion is characterized in that the multi-stage inclined.
- the inner well portion, the first inclined portion formed to be inclined toward the second bead sheet side from the outer well portion; And a second inclined portion formed to be inclined toward the first inclined portion in the second bead sheet and connected to the first inclined portion.
- the gradient angle of the primary inclined portion is characterized in that 5 ⁇ 25 °. do.
- the gradient angle of the secondary inclined portion is characterized in that 5 ⁇ 15 °.
- the vehicle wheel according to the present invention is configured to vary the thickness of the outer well portion, the inner well portion and the second bead sheet, while forming an inner well portion extending from the outer well portion to be inclined in multiple stages, thereby minimizing the amount of deformation of the rim portion and being transferred to the vehicle body.
- the driving comfort can be improved by reducing vibration and noise.
- the present invention has the effect of reducing the weight while improving the rigidity of the rim portion.
- FIG. 1 is an enlarged view illustrating a rim of a general vehicle wheel.
- FIG. 2 is a view showing a relationship of the force acting on the rim of a general vehicle wheel.
- FIG. 3 is an enlarged view illustrating a rim of a vehicle wheel according to the present invention.
- FIG. 4 is a view showing the relationship of the force acting on the rim of the vehicle wheel according to the present invention.
- FIG. 5 is an installation state diagram of a measuring sensor for the experiment of the frequency (vibration) response analysis of the rim of the vehicle wheel according to the present invention.
- FIG. 6 is a graph illustrating resonance and antiresonance according to the experimental result of FIG. 5.
- FIG. 7 to 9 are graphs of the results of analyzing the critical point for the upper limit of the rim thickness and weight from the experimental results and analysis of Figure 5
- Figure 7 is a minimum critical point analysis graph of the outer well thickness of the vehicle wheel
- Figure 8 is a vehicle The maximum critical point analysis graph according to the weight variation of the thickness of the outer well of the wheel
- FIG. 9 is a graph showing the correlation between the thickness of the outer well of the vehicle wheel, the weight, and the rigidity.
- FIG. 10 is a graph showing the correlation between the primary gradient angle and the secondary gradient angle of the vehicle wheel according to the present invention.
- 11 is a graph showing the correlation between the primary gradient angle and the weight and rigidity of the vehicle wheel according to the present invention.
- FIG. 12 to 14 is a vibration test measurement and analysis data of a general vehicle wheel and a vehicle wheel according to the present invention mounted on a vehicle
- FIG. 12 is a graph showing a vibration frequency in a driver's seat handle
- FIG. It is a graph which shows a vibration frequency
- FIG. 14 is a graph which shows the vibration frequency in the knuckle part of a vehicle wheel.
- Figure 3 is an enlarged view showing the rim of the vehicle wheel according to the invention
- Figure 4 is a view showing the relationship of the force acting on the rim of the vehicle wheel according to the invention
- Figure 5 is a vehicle wheel according to the invention This is a state diagram of the measurement sensor for the experiment of frequency (vibration) response analysis of the rim.
- FIG. 6 is a graph showing resonance and anti-resonance according to the experimental results of FIG. 5, and FIGS. 7 to 9 are graphs of the results of analyzing the critical point for the upper limit of the rim thickness and weight from the experimental results and analysis of FIG. 5.
- 7 is a minimum critical point analysis graph of the thickness of the outer well of the vehicle wheel
- FIG. 8 is a maximum critical point analysis graph according to the weight variation of the thickness of the outer well of the vehicle wheel
- FIG. It is a graph showing the correlation.
- FIG. 10 is a graph illustrating a correlation between a primary gradient angle and a secondary gradient angle of a vehicle wheel according to the present invention
- FIG. 11 is a graph illustrating a correlation between the primary gradient angle, weight, and rigidity of the vehicle wheel according to the present invention.
- FIG. 12 is a vibration test measurement and analysis data of a general vehicle wheel and a vehicle wheel according to the present invention mounted on a vehicle
- FIG. 12 is a graph showing a vibration frequency in a driver's seat handle
- FIG. It is a graph which shows
- FIG. 14 is a graph which shows the vibration frequency in the knuckle part of a vehicle wheel.
- the wheel for a vehicle according to the present invention is formed to protrude on the disk member 100 and the outer peripheral surface of the disk member 100 provided with an axle hub (not shown) and the tire 200. It includes a rim 160 is mounted.
- the disk member 100 includes a disk-shaped hub mounting portion 110 to which the axle hub is connected, and a spoke portion 150 extending radially from the outer side of the hub mounting portion 110 to the rim portion 160. .
- the hub mounting portion 110 is formed in a solid solid shape of the portion except for the bolt hole 130 and the cavity 140 for the bolt coupling with the axle hub.
- the hub mounting portion 110 is formed in the center of the hub hole 120 is inserted into the axle hub, a plurality of bolt holes 130 is fixed to the outer portion of the hub mounting portion 110 spaced apart from the hub hole 120 Spaced at intervals and arranged along the circumferential direction.
- the bolt hole 130 is formed so that the diameter gradually narrower from the outer surface of the disk member 100 to the inner surface, the nut or cap nut is inserted from the outer surface of the disk member 100 is provided, the disk member A bolt of the axle hub penetrating the bolt hole 130 at the inner side of the (100) is fastened and fixed to the nut or cap nut provided in the bolt hole 130.
- the cavity 140 is provided between the bolt holes 130, and a damper (not shown) including a rubber material may be inserted therein.
- the cavity 140 is formed on the inner surface of the disk member 100, that is, the disk member 100 opposite the bolt hole 130, and formed to gradually decrease in diameter from the inner surface of the disk member 100 toward the center side. do.
- the bolt hole 130 and the cavity 140 may be formed on the opposite side to complement the rigidity of the disk member 100. That is, while the gap between the hub hole 120 and the bolt hole 130 on the outer surface of the disk member 100 is narrow, the rigidity is applied by applying the hub mounting portion 110 of the solid without the cavity 140 is formed. In addition, the spacing between the hub hole 120 and the cavity 140 is narrow at the inner side of the disk member 100, while the spacing between the hub hole 120 and the bolt hole 130 is wider and more rigid. Can be secured.
- a closed annular space is formed between the rim 160 and the tire 200.
- the rim portion 160 includes the first tire mounting portions 161, 162, 164, and 165, the second tire mounting portions 161a, 162a, and 165a and the well portion 163, as shown in FIGS. 3 and 4.
- the thickness of the outer well part 163a, the second bead sheet 162a, and the inner well part 163b is made thinner.
- the first tire mounting portions 161, 162, 164, and 165 are connected to the disc member 100, and include a first bead seat 162 contacting the outer bead 201 of the tire 200.
- the first tire mounting parts 161, 162, 164, and 165 include the first moving limit parts 161 and 165 and the well wall part 164.
- the first movement limiting portions 161 and 165 protrude from the first bead sheet 162 and limit the movement of the outer beads 201 in contact with the outer beads 201.
- the first movement limiting portions 161 and 165 include a first rim flange 161 and a first hump 165.
- the first rim flange 161 protrudes from the first bead sheet 162 and contacts the outside of the outer bead 201 to limit the outward movement of the outer bead 201.
- the first hump 165 protrudes from the first bead sheet 162 and contacts the inner side of the outer bead 201, thereby limiting the inward movement of the outer bead 201.
- the well wall portion 164 extends from the first bead sheet 162 or the first movement limiting portions 161 and 165 and is connected to the outer well portion 163a.
- the second tire mounting parts 161a, 162a, and 165a are positioned to be spaced apart from the first tire mounting parts 161, 162, 164, and 165, and the second bead seat 162a which the inner bead 202 of the tire 200 contacts. It includes.
- the second tire mounting portions 161a, 162a, and 165a further include second movement limiting portions 161a and 165a.
- the second movement limiting portions 161a and 165a protrude from the second bead sheet 162a and contact the inner bead 202 to limit the movement of the inner bead 202.
- the second movement limiting portions 161a and 165a include a second rim flange 161a and a second hump 165a.
- the second rim flange 161a protrudes from the second bead sheet 162a and contacts the outside of the inner bead 202 (the lower side of FIG. 4) to limit the outside movement of the inner bead 202.
- the second hump 165a protrudes from the second bead sheet 162a and contacts the inner side of the inner bead 202 (upper reference side in FIG. 4), thereby limiting the inward movement of the inner bead 202.
- the well part 163 includes an outer well part 163a extending downward from the first tire mounting parts 161, 162, 164, and 165 (refer to FIG. 4), an outer well part 163a, and a second tire mounting part 161a, 162a,
- the inner well part 163b which connects 165a and obliquely connects from the outer well part 163a to the starting point of the hump round part r2 of the second hump 165a is inclined.
- the well part 163 may include the inner and outer beads 201 and 202 of the tire 200 interviewed with the first and second bead sheets 162 and 162a, respectively. It is formed to a thickness smaller than the length of 162a, so as to be caught by the first and second humps (165, 165a).
- the rim 160 of the vehicle wheel is formed to be thinner while proceeding in the order of the outer well part 163a, the second bead seat 162a, and the inner well part 163b. That is, the thickness T1 of the outer well part 163a is thickest, the thickness T3 of the second bead sheet 162a is thickest, and finally the inner well part 163b is formed with the thinnest thickness T2. (T1> T3> T2).
- the thickness T1 of the outer well part 163a is the vertical thickness at the intersection of the well round r1 and the outer well part 163a
- the thickness T2 of the inner well part 163b is the thickness of the inner well part 163b.
- the thickness in the vertical direction at the midpoint, and the thickness T3 of the second bead sheet 162a may be selected as the vertical thickness at the midpoint of the inner bead sheet 162a.
- the relationship between the thicknesses T1, T2, and T3 of the outer well part 163a, the inner well part 163b, and the second bead sheet 162a may be as follows. That is, the thickness T1 of the outer well portion 163a with respect to the thickness T3 of the second bead sheet 162a is formed as 1.2 ⁇ T1 / T3 ⁇ 1.8, and with respect to the thickness T2 of the inner well portion 163b.
- the thickness T1 of the outer well part 163a may be formed as 1.2 ⁇ T1 / T2 ⁇ 2.5.
- the thickness T1 of the outer well part 163a is formed to be 7.1 mm
- the thickness T2 of the inner well part 163b is formed to be 3.8 mm
- the second bead The thickness T3 of the seat 162a is 5.0 mm, so that both the rigidity and light weight of the vehicle wheel can be satisfied.
- the thicknesses T1, T2, and T3 of the outer well part 163a, the inner well part 163b, and the second bead sheet 162a may be formed in a ratio of 6.0 to 9.1 mm: 3.3 to 5.5 mm: 4.0 to 7.5 mm.
- the thicknesses T1 and T3 of the outer well part 163a and the second bead sheet 162a based on the thickness T2 of the thinnest inner well part 163b and the thickness T2 of the inner well part 163b.
- the thickness T2 of the inner well part 163b serving as a reference of the above ratio is less than 3.3 mm, the vehicle wheel can be reduced in weight, but it is difficult to maintain the strength of the vehicle wheel.
- the thickness T2 of the inner well part 163b exceeds 5.5 mm, the strength of the vehicle wheel may be maintained, but the weight may be increased.
- the thickness T2 of the inner well part 163b is greater than the thickness difference T1-T3 between the outer well part 163a and the second bead sheet 162a (T1-T3 ⁇ ). T2). This ensures the minimum thickness of the inner well part 163b having a relatively weak strength compared to the outer well part 163a and the second bead sheet 162a, thereby maintaining the strength of the inner well part 163b so that the entire rim 160 This is to maintain the strength beyond the set range.
- the thicknesses T1 and T3 of the outer well part 163a and the second bead sheet 162a are set in an optimal range in consideration of the thickness T2 of the inner well part 163b and the ratio thereof. The description will be described in detail in the embodiments to be described later.
- the inner well part 163b is formed to be inclined, and the inner well part 163b is formed to be inclined upwardly from the outer well part 163a to the second bead sheet 162a.
- a secondary inclined portion 163b-2 formed to be inclined downward from the second bead sheet 162a toward the primary inclined portion 163b-1 and connected to the primary inclined portion 163b-1.
- the primary inclined portion 163b-1 and the secondary inclined portion 163b-2 of the inner well portion 163b minimize the thicknesses T1 and T2 of the outer well portion 163a and the second bead sheet 162a, respectively.
- the gradient angle ⁇ 2 of ⁇ 2) is formed at a ratio of 5 to 25 degrees: 15 to 5 degrees.
- the gradient angle ⁇ 1 of the primary inclined portion 163b-1 is an extension line parallel to the center of rotation O of the wheel for the vehicle at the bottom of the outer well portion 163a and an inner well portion 163b (primary inclined portion). (163b-1)).
- the draft angle ⁇ 2 of the secondary inclined portion 163b-2 is an extension line and an inner well portion parallel to the center of rotation line O of the wheel at the bottom surface of the second bead sheet 162a (inner bead sheet 162a). Angle of inclination between 163b and the secondary inclined portion 163b-2.
- the gradient angle ⁇ 2 of the secondary inclined portion 163b-2 is an extension line parallel to the center of rotation O of the wheel and the secondary inclined portion 163b-2 in the primary inclined portion 163b-1. It is formed equal to each other with a gradient angle between each other.
- the ratio of the gradient angles ⁇ 1. ⁇ 2 of the first and second inclination portions 163b-1.163b-2 is based on the gradient angle ⁇ 1 of the primary inclination portions 163b-1. It is determined by setting the gradient angle ⁇ 2 of 163b-2).
- the draft angle ⁇ 1 of the primary inclined portion 163b-1 when the draft angle ⁇ 1 of the primary inclined portion 163b-1 is 25 degrees, the draft angle ⁇ 2 of the secondary inclined portion 163b-2 becomes 5 degrees, and the primary inclined portion 163b-1 When the gradient angle ⁇ 1 of 5) is 5 degrees, the gradient angle ⁇ 2 of the secondary inclined portion 163b-2 corresponds to 15 degrees.
- the optimal gradient angle ratio is a case where the draft angle ⁇ 1 of the primary inclined portion 163b-1 is 20 degrees and the draft angle ⁇ 2 of the secondary inclined portion 163b-2 is 10.6 degrees.
- the draft angle ⁇ 1 of the primary inclined portion 163b-1 has a maximum draft angle of 5 times the range based on the minimum draft angle, and when the maximum draft angle exceeds 5 times the minimum draft angle, the inner well portion A phenomenon in which the 163b is sharply bent occurs, which results in weak durability.
- the gradient angle ⁇ 2 of the secondary inclined portion 163b-2 determined according to the gradient angle ⁇ 1 of the primary inclined portion 163b-1 is shown in Table 1 below.
- the gradient angle ⁇ 2 of the secondary inclined portion 163b-2 is the thickness of the second bead sheet 162a according to the gradient angle ⁇ 1 of the primary inclined portion 163b-1.
- T3 minimum weight
- the outer well part 163a connected to the disk member 100 is formed thicker than the inner well part 163b and the second bead sheet 162a, while the inner well part 163b is formed on the first and second inclined parts 163b-1. , 163b-2) by being inclined in two stages, the deformation amount ⁇ 2 of the rim portion 160 with respect to the loads F1 and F2 acting on the rim portion 160 while driving as shown in FIG. It becomes smaller than) and can reduce the vibration and noise transmitted to the vehicle ( ⁇ 1> ⁇ 2).
- the thickness T1 of the outer well part 163a connected to the disk member 100 is made thicker than before, while the inner well part 163b is formed on the first and second inclined parts 163b-1 and 163b.
- Reaction force (R2-1, R2-2) acting at the first and second inclination points for the reaction force (F2) acting on the inner bead sheet (162a) side by forming the second step inclined at -2) In this case, the moment due to the load F2 acting on the inner bead sheet 162a can be reduced to reduce the amount of deformation? 2 thereof.
- the weight and rigidity of the vehicle wheel according to the thickness change of the outer well portion 163a, the inner well portion 163b, and the second bead seat 162a of the present invention and the conventional (mass production example) rim portion 160 The comparison is shown in Table 2 below.
- the wheel stiffness test is a stiffness test of a conventional vehicle wheel having a weight of 13.26 kg and a vehicle wheel unit having a weight of 12.23 kg (weight reduction of 1.03 kg) of Example 3 according to the present invention, and a vehicle with the tire 200 mounted thereon.
- the test name is called EMA (Experimental Modal Analysis).
- EMA is a field that analyzes the dynamic response of structures by stimuli, which occurs through data acquisition equipment. This is useful for verifying the finite element analysis (FEA) results as well as determining the modal parameters of the structure.
- FEA finite element analysis
- EMA is a four-step process for extracting modal parameters.
- a vibration sensor called an accelerometer is attached to the inner surface of the disk member 100 of the vehicle wheel as shown in FIG.
- Accelerometers use impulse hammers to introduce vibration and use specific frequency ranges and dynamic ranges required for specific tests.
- Frequency response is a measure of the response of an input signal of various frequencies with a constant amplitude to a system. It is an analytical method that represents a measure of the response to a wideband frequency signal entering a system.
- the frequency response function calculates the transfer function of the structure and compares it with the response to the stimulus, and the results of the FRF show the response to the size and phase of the structure in the defined frequency range.
- test result of the FRF is shown as a graph of Figure 6, the description thereof is as follows.
- FIG. 6 is a graph of resonance and anti-resonance appearing on the wheel of the vehicle according to the experimental result of FIG. 5, and the measurement sensors M1 and M2 are attached to the inner surface of the vehicle wheel as shown in FIG. 5.
- H11 the measurement of M1 with excitation (shock) to M1
- H12 the measurement of M1 with excitation (shock) to M2
- H22 the measurement of M2 with excitation (shock) to M1
- H11 be the excitation (impact) of M2
- H22 the measurement of M2
- f1 is the average resonance frequency of four measured values (H11, H12, H21, H22), and f2 is the average anti-resonance frequency of four measured values (H11, H12, H21, H22). ) Value.
- Kwheel (Lateral Stiffness) value can be obtained by using the following equation.
- Modal parameter extraction algorithms are used to identify modal parameters from FRF data. These algorithms are used to detect peaks, calculate polynomials in the frequency domain, and synthesize FRF ⁇ .
- the vehicle wheel stiffness test is a stiffness test of a conventional vehicle wheel having a weight of 13.3 kg and a vehicle wheel unit having a weight of 12.2 kg (decreasing 1.1 kg) of Example 3 according to the present invention, and the vehicle with the tire 200 mounted thereon. Was assembled to the vibration test.
- the vehicle wheel of embodiment 3 of the invention Size 18X7J Weight 12.23 kg
- the vehicle wheel of embodiment 3 of the invention Size 18X7J Weight 12.23kg: Stiffness 64.3kN / mm
- FIG. 7 is a minimum critical point analysis graph of the thickness of the outer well of the vehicle wheel, and as shown in FIG. 7, the stiffness of the general vehicle wheel is 62.5 kN / mm, and the thickness of the outer well 163a of the fourth embodiment of the present invention is shown. Since the rigidity is 62.6 kN / mm when T1 is 6.1 mm, the thickness T1 of the outer well part 163a is higher than the rigidity of a general vehicle wheel when the thickness T1 of the outer well part 163a is 6.0 mm or more. Shall be 6.0 or higher.
- FIG. 8 is a graph of the maximum critical point analysis according to the weight variation of the thickness of the outer well part of the vehicle wheel.
- the stiffness is the conventional stiffness value.
- the thickness T1 of the outer well portion 163a exceeds 9.1 mm, the weight reduction of the wheel is less than 5%, so that the maximum thickness T1 of the outer well portion 163a is 9.1 to maximize the effect of the weight reduction. It will be mm or less.
- the thickness of the outer well 163a of the wheel according to the present invention is set to 6.1 to 9.1 mm.
- the stiffness value of the conventional vehicle wheel is greater than 62.5 kN / mm and the weight can be as light as possible.
- the rigidity is equal to or larger than the conventional stiffness value, and the weight becomes an optimal thickness that can be reduced by about 6 to 9% compared to the conventional one. .
- the thickness T1 of the outer well part 163a is 7.1 mm
- the thickness T2 of the inner well part 163b is 3.8 mm
- the thickness T3 of the second bead sheet 162a It can be seen that forming the 5.0mm is the most suitable thickness ratio that can satisfy both the rigidity and light weight of the vehicle wheel.
- the gradient angle ⁇ 1 of the primary inclination portion 163b-1 is 25 degrees
- the gradient angle ⁇ 2 of the secondary inclination portion 163b-2 is increased.
- the degree of inclination ⁇ 2 of the secondary inclination portion 163b-2 is at a maximum of 15 degrees.
- the gradient angles ⁇ 1 and ⁇ 2 of the optimal primary and secondary inclination portions 163b-1 and 163b-2 have a gradient angle ⁇ 1 of the primary inclination portions 163b-1 to 20 degrees, and the secondary When the gradient angle ⁇ 2 of the inclined portion 163b-2 is 10 degrees, the inner well portion 163b having the first and second inclined portions 163b-1 and 163b-2 is formed close to the straight line.
- the outer diameter of the wheel is larger than the optimal draft angle.
- the optimal draft angle is obtained when the draft angle ⁇ 1 of the primary inclined portion 163b-1 is minimum and the draft angle ⁇ 2 of the secondary inclined portion 163b-2 is maximum.
- the outer diameter of the wheel is smaller, the weight is heavier than the optimum gradient angle case (see Table 4 and FIG. 11).
- the primary inclined portions 163b-1 are more than the case where the gradient angles ⁇ 1 and ⁇ 2 of the first and second inclined portions 163b-1 and 163b-2 are optimal.
- the gradient angle ⁇ 1 is the maximum and the gradient angle ⁇ 2 of the secondary inclined portion 163b-2 is the minimum, the rigidity is slightly increased than the optimal case, while the weight is greatly increased.
- the rigidity is weaker than the optimum case, and the weight is further increased. It is heavy.
- the weight of the vehicle wheel according to Embodiment 3 of the present invention is 1.03 kg less than that of the conventional vehicle wheel
- the thickness of the outer well part 163a is larger than that of the conventional wheel.
- the vibrations transmitted to the spoke parts of the vehicle wheel may be absorbed by the outer well part 163a to reduce the vibration value at the peak point of the tire rotation frequency.
- the rim 160 of the vehicle wheel is configured as in the present invention, it can be seen that the reduction of the stiffness value due to the weight reduction of the vehicle wheel and the influence of vibration and noise due to this can be minimized.
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Abstract
Description
1차 경사부의 구배각 | 25도 | 20도 | 15도 | 10도 | 5도 |
1차 경사부의 비율(θ1) | 1 | 0.8 | 0.6 | 0.4 | 0.2 |
2차 경사부의 비율(θ2) | 0.2×θ1 | 0.5×θ1 | 1.0×θ1 | 1.5×θ1 | 3.0×θ1 |
구분 | 외측 웰부 | 내측 웰부 | 제2비드시트 | 두께순서 | 중량(㎏) | 중량감소율 | 강성 | |
종래(양산예) | 5.5㎜ | 5.0㎜ | 6.0㎜ | T3>T1>T2 | 13.26 | 비교중량 | 62.5kN/㎜ | |
본 발명 실시예 | 예1 | 9.1㎜ | 4.2㎜ | 5.0㎜ | T1>T3>T2 | 12.57 | 94.8% | 68.7kN/㎜ |
예2 | 8.1㎜ | 3.8㎜ | 5.0㎜ | T1>T3>T2 | 12.34 | 93.1% | 66.5kN/㎜ | |
예3 | 7.1㎜ | 3.8㎜ | 5.0㎜ | T1>T3>T2 | 12.23 | 92.2% | 64.3kN/㎜ | |
예4 | 6.1㎜ | 3.8㎜ | 5.0㎜ | T1>T3>T2 | 12.10 | 91.3% | 62.6kN/㎜ | |
예5 | 5.5㎜ | 3.8㎜ | 5.0㎜ | T1>T3>T2 | 11.90 | 89.7% | 60.8kN/㎜ | |
본 발명의 치수 범위 | 6.0~9.1mm | 3.3~5.5mm | 4.0~7.5mm | T1>T3>T2 |
구분 | 최대θ1, 최소θ2 | 최적θ1, θ2 | 최소θ1, 최대θ2 |
1차 경사부(θ1) | 25 | 20 | 5 |
2차 경사부(θ2) | 5 | 10 | 15 |
구분 | 최대θ1-12.55㎏ | 최적θ1-12.23㎏ | 최소θ1-12.29㎏ |
중량 | 12.55 | 12.23 | 12.29 |
강성 | 64.7 | 64.3 | 64.2 |
Claims (14)
- 차축이 연결되는 디스크부재; 및상기 디스크부재에 연결되며, 타이어가 장착되는 림부;를 포함하고,상기 림부는,상기 디스크부재에 연결되며, 상기 타이어의 외측비드가 접하는 제1비드시트를 포함하는 제1타이어장착부;상기 제1타이어장착부와 이격되게 위치하며, 상기 타이어의 내측비드가 접하는 제2비드시트를 포함하는 제2타이어장착부; 및상기 제1타이어장착부에서 연장되는 외측 웰부와, 상기 외측 웰부와 상기 제2타이어장착부를 연결하는 내측 웰부가 구비되는 웰부;를 포함하며,상기 외측 웰부, 상기 제2비드시트, 상기 내측 웰부 순으로 진행하면서 두께가 얇아지는 것을 특징으로 하는 차량용 휠.
- 제 1항에 있어서, 상기 제1타이어장착부는,상기 제1비드시트에서 돌출되고, 상기 외측비드에 접하여, 상기 외측비드의 이동을 제한하는 제1이동제한부; 및상기 제1비드시트 또는 상기 제1이동제한부에서 연장되고, 상기 외측 웰부와 연결되는 웰벽부;를 더 포함하는 것을 특징으로 하는 차량용 휠.
- 제 2항에 있어서, 상기 제1이동제한부는,상기 제1비드시트에서 돌출되고, 상기 외측비드의 외측에 접하여, 상기 외측비드의 외측 이동을 제한하는 제1림플랜지; 및상기 제1비드시트에서 돌출되고, 상기 외측비드의 내측에 접하여, 상기 외측비드의 내측 이동을 제한하는 제1험프;를 포함하는 것을 특징으로 하는 차량용 휠.
- 제 1항에 있어서, 상기 제2타이어장착부는,상기 제2비드시트에서 돌출되고, 상기 내측비드에 접하여 상기 내측비드의 이동을 제한하는 제2이동제한부;를 더 포함하는 것을 특징으로 하는 차량용 휠.
- 제 4항에 있어서, 상기 제2이동제한부는,상기 제2비드시트에서 돌출되고, 상기 내측비드의 외측에 접하여, 상기 내측비드의 외측 이동을 제한하는 제2림플랜지; 및상기 제2비드시트에서 돌출되고, 상기 내측비드의 내측에 접하여, 상기 내측비드의 내측 이동을 제한하는 제2험프;를 포함하는 것을 특징으로 하는 차량용 휠.
- 제 1항에 있어서,상기 외측 웰부의 두께는 상기 제2비드시트의 두께의 1.2 ~ 1.8배인 것을 특징으로 하는 차량용 휠.
- 제 6항에 있어서,상기 외측 웰부의 두께는 상기 내측 웰부의 두께의 1.2 ~ 2.5배인 것을 특징으로 하는 차량용 휠.
- 제 1항에 있어서,상기 외측 웰부와, 상기 내측 웰부와, 상기 제2비드시트의 두께는 각각, 6.0 ~ 9.1mm, 3.3 ~ 5.5㎜, 4.0 ~ 7.5㎜인 것을 특징으로 하는 차량용 휠.
- 제 1항에 있어서,상기 내측 웰부의 두께는, 상기 외측 웰부와 상기 제2비드시트의 두께의 차이보다 큰 것을 특징으로 하는 차량용 휠.
- 제 1항에 있어서,상기 내측 웰부는, 상기 디스크부재의 회전 중심을 기준으로 상기 외측 웰부의 외측으로 경사지게 형성되는 것을 특징으로 하는 차량용 휠.
- 제 10항에 있어서,상기 내측 웰부는 다단 경사지게 형성되는 것을 특징으로 하는 차량용 휠.
- 제 11항에 있어서, 상기 내측 웰부는,상기 외측 웰부에서 상기 제2비드시트 측으로 경사지게 형성되는 1차 경사부; 및상기 제2비드시트에서 상기 1차 경사부 측으로 경사지게 형성되어, 상기 1차 경사부에 연결되는 2차 경사부;를 포함하는 것을 특징으로 하는 차량용 휠.
- 제 12항에 있어서,상기 1차 경사부의 구배각은 5 ~ 25˚인 것을 특징으로 하는 차량용 휠.
- 제 13항에 있어서,상기 2차 경사부의 구배각은 5 ~ 15˚인 것을 특징으로 하는 차량용 휠.
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US15/505,693 US10363777B2 (en) | 2016-02-19 | 2016-08-29 | Vehicle wheel |
JP2017511946A JP6514767B2 (ja) | 2016-02-19 | 2016-08-29 | 車両用ホイール |
EP16834268.1A EP3231632B1 (en) | 2016-02-19 | 2016-08-29 | Vehicle wheel |
CN201680002523.7A CN107531089B (zh) | 2016-02-19 | 2016-08-29 | 车轮 |
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KR1020160019501A KR101625375B1 (ko) | 2016-02-19 | 2016-02-19 | 림부가 개선된 차량용 방진휠 |
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US10172351B2 (en) | 2015-09-04 | 2019-01-08 | Ecolab Usa Inc. | Performic acid on-site generator and formulator |
DE102016117510A1 (de) * | 2016-09-16 | 2018-03-22 | Maxion Wheels Germany Holding Gmbh | Verfahren zur Herstellung von Steilschulterfelgen, Steilschulterfelge und Fahrzeugrad hiermit für Nutzfahrzeuge |
WO2018111216A1 (en) * | 2016-12-12 | 2018-06-21 | Ford Motor Company | Anti-vibration driver assist |
FR3073777B1 (fr) * | 2017-11-21 | 2020-11-27 | Safran Landing Systems | Jante de roue freinee d'aeronef |
FR3082144B1 (fr) * | 2018-06-12 | 2021-12-31 | Renault Sas | Jante pour roue de vehicule |
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EP3231632B1 (en) | 2023-05-10 |
JP6514767B2 (ja) | 2019-05-15 |
KR101625375B1 (ko) | 2016-05-30 |
US10363777B2 (en) | 2019-07-30 |
CN107531089A (zh) | 2018-01-02 |
JP2018508394A (ja) | 2018-03-29 |
EP3231632A4 (en) | 2018-01-24 |
EP3231632A1 (en) | 2017-10-18 |
CN107531089B (zh) | 2020-08-28 |
US20180104984A1 (en) | 2018-04-19 |
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