JP2012158332A - Method for assembling auxiliary air chamber member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for reliably and efficiently assembling an auxiliary air chamber member on vehicle wheels.SOLUTION: The method for assembling an auxiliary air chamber member 13 includes: a step of arranging one widthwise end edge 13c in the auxiliary air chamber 13 into a groove part 17 of the first vertical wall surface 15; and a step of press-fitting the other widthwise end edge 13c in the auxiliary air chamber 13 into the groove part 17 of the second vertical wall surface 16.

Description

  The present invention relates to a method for assembling a sub air chamber member for assembling a sub air chamber member for reducing noise associated with air column resonance (cavity resonance) in a tire air chamber to a vehicle wheel.

  In general, it is known that air column resonance generated in a tire air chamber (hereinafter referred to as “tire air chamber”) causes road noise of an automobile. Air column resonance is a phenomenon in which random vibration transmitted from the road surface to the tire vibrates the air in the tire air chamber, and as a result, a resonance phenomenon occurs near the air column resonance frequency of the tire air chamber and a resonance sound is generated. .

  Conventionally, in order to reduce the noise accompanying this air column resonance, a vehicle wheel described in Patent Document 1 is known. The vehicle wheel has a plurality of auxiliary air chambers along the circumferential direction of the rim. More specifically, in the vehicle wheel, the vehicle wheel is formed between an annular vertical wall standing on the well portion so as to extend in the circumferential direction of the rim and a rising side wall of the well portion facing the bead seat portion. The annular space is closed with a lid member. Each sub air chamber is formed by partitioning the space portion, which is partitioned by the lid member, the well portion, and the vertical wall, with a plurality of partition walls arranged at predetermined intervals in the circumferential direction. Yes. Further, the tire air chamber and each sub air chamber communicate with each other through a communication hole formed in the lid member. According to this vehicle wheel, the communication hole and the auxiliary air chamber constitute a Helmholtz resonator, and air column resonance noise in the tire air chamber can be reduced.

Japanese Patent No. 3992566

  However, the conventional vehicle wheel is not a realistic structure. That is, it is necessary to join a plurality of partition walls and lid members to a wheel formed with a vertical wall so as to stand up from the well portion with high accuracy by welding, bonding, fitting and fastening while maintaining airtightness. In consideration of ensuring the manufacturing cost and the increase in manufacturing man-hours and manufacturing costs, there is a problem that it is not suitable for mass production.

  Therefore, the applicant of the present application has applied for an invention relating to a vehicle wheel capable of improving mass productivity to the Japan Patent Office (Japanese Patent Application No. 2007-125139). The vehicle wheel includes a sub air chamber member having a sub air chamber communicating with the tire air chamber. The auxiliary air chamber member rises radially outward from the outer peripheral surface of the vehicle wheel and extends in the circumferential direction of the outer peripheral surface, and is formed in each groove portion of a pair of vertical wall surfaces facing each other in the width direction of the auxiliary air chamber member. It is assembled to the vehicle wheel by fitting both end edges.

  Here, in order to improve the durability of the auxiliary air chamber member against centrifugal force during high-speed rotation of the vehicle wheel, the width of both ends of the auxiliary air chamber member in the width direction is reduced, or the auxiliary air chamber member is made of a highly rigid material. It has come to be done. For this reason, it has become difficult to assemble the auxiliary air chamber member to the vehicle wheel, and an assembling method capable of assembling the auxiliary air chamber member reliably and efficiently is desired.

  Then, this invention makes it a subject to provide the assembly | attachment method of the sub air chamber member which can assemble | attach a sub air chamber member with respect to the vehicle wheel reliably and efficiently.

  The present invention that solves the above-described problem is that when the sub air chamber member having the sub air chamber communicating with the tire air chamber is assembled to the vehicle wheel, the vehicle wheel rises radially outward from the outer peripheral surface of the vehicle wheel, The auxiliary air chamber member is assembled to the vehicle wheel by fitting both end edges in the width direction of the auxiliary air chamber member into the grooves of a pair of vertical wall surfaces that are formed to extend in the circumferential direction and face each other. A method for assembling the air chamber member, the step of disposing one end edge in the width direction of the sub air chamber member in one groove portion of the pair of vertical wall surfaces, and the other groove portion of the pair of vertical wall surfaces, And press-fitting the other end in the width direction of the auxiliary air chamber member.

  The step of press-fitting the other end edge in the width direction of the sub air chamber member includes the step of press-fitting a part of the other end edge in the width direction of the sub air chamber member into the other groove portion of the pair of vertical wall surfaces; It is desirable to include a step of sequentially press-fitting the other end in the width direction of the auxiliary air chamber member into the other groove portion of the vertical wall surface from the part that is press-fitted in the circumferential direction.

  According to the assembling method of the sub air chamber member of the present invention, it is possible to prevent the sub air chamber member from being displaced at the time of assembling, so that the sub air chamber member can be reliably and efficiently assembled to the vehicle wheel. It becomes possible.

It is a perspective view of the wheel for vehicles concerning this embodiment. It is principal part front sectional drawing of the wheel which attached the tire to the vehicle wheel of FIG. (A) is principal part front sectional drawing which expanded partially the well part which attached the sub air chamber member, (b) is a perspective view of the notch part formed in the vertical wall of a well part. It is side surface sectional drawing of the wheel for vehicles, Comprising: It is a figure which shows the arrangement position of a sub air chamber member. (A) is a perspective view of a sub air chamber member. (B) is AA 'sectional drawing of (a), and is a fragmentary sectional view by the side of A. FIG. (C) is CC sectional drawing of (a). (D) is the fragmentary top view which looked at the protrusion part of the sub air chamber member from D direction of (a). It is a perspective view which shows the wheel for vehicles which concerns on 1st embodiment, an auxiliary air chamber member, and an assembly jig. It is a figure which shows the usage method of the assembly jig which concerns on 1st embodiment, (a) is sectional drawing which shows before press-fit, (b) is sectional drawing after press-fit, (c) is (b) FIG. (A)-(d) is a figure which shows the assembly | attaching method of the sub air chamber member which concerns on 1st embodiment. It is a figure which shows the usage method of the assembly jig | tool which concerns on 2nd embodiment, (a) is sectional drawing before press-fit, (b) is sectional drawing after press-fit. It is a figure which shows the usage method of the assembly jig which concerns on 3rd embodiment.

<Structure of vehicle wheel and auxiliary air chamber member>
Hereinafter, embodiments of a vehicle wheel and a sub air chamber member according to the present invention will be described in detail with reference to the drawings as appropriate. In the drawings to be referred to, FIG. 1 is a perspective view of a vehicle wheel according to the present embodiment. FIG. 2 is a front sectional view of a main part of a wheel in which a tire is mounted on the vehicle wheel of FIG. FIG. 3A is a front sectional view of a main part in which the well part to which the auxiliary air chamber member is attached is partially enlarged, and FIG. 3B is a perspective view of a notch part formed in the vertical wall of the well part. It is.

  The vehicle wheel of the present invention is mainly characterized in that a sub-air chamber member (Helmholtz resonator) is fitted and fixed to the well portion side. Here, after first describing the overall configuration of the vehicle wheel, the configuration of the auxiliary air chamber member will be described.

  As shown in FIG. 1, a vehicle wheel 10 according to the present embodiment includes a rim 11 for mounting a tire 20 (see FIG. 2), a disk 12 for connecting the rim 11 to a hub (not shown), The auxiliary air chamber member 13 is fitted and fixed on the outer peripheral surface 11d (see FIG. 3A) of the well portion 11c constituting the rim 11 of the vehicle wheel 10.

  As shown in FIG. 2, the rim 11 includes bead sheet portions 11a and 11a formed at both end portions in the width direction, and a rim flange portion 11b bent in an L shape outward from the bead sheet portions 11a and 11a. 11b and a well portion 11c that is recessed radially inward between the bead sheet portions 11a and 11a.

  The bead portion 20a of the tire 20 is attached to the bead seat portion 11a. As a result, a tire air chamber MC comprising an annular sealed space is formed between the rim 11 and the inner peripheral surface of the tire 20.

  The well portion 11c is provided for dropping the bead portions 20a and 20a of the tire 20 when the rim is assembled to the tire 20 to the rim 11. A vertical wall 14 is erected on the outer peripheral surface of the well portion 11c.

  As shown in FIG. 3A, the vertical wall 14 is erected on the outer peripheral surface 11d so as to form a first vertical wall surface 15 that rises radially outward from the outer peripheral surface 11d of the well portion 11c. The vertical wall 14 has an annular shape extending in the circumferential direction of the outer peripheral surface 11d. Further, a second vertical wall surface 16 is provided on the side surface portion 11e formed on the inner side in the width direction of the well portion 11c so as to face the first vertical wall surface 15. Note that the vertical wall 14 in the present embodiment is formed integrally with the well portion 11c when the rim 11 is cast.

  A groove portion 17 is formed in each of the first vertical wall surface 15 and the second vertical wall surface 16. These groove portions 17 and 17 are formed along the circumferential direction of the outer peripheral surface 11d of the well portion 11c to form an annular groove. The edge portions 13e of the auxiliary air chamber member 13 to be described later are fitted into these groove portions 17 and 17. In addition, the groove parts 17 and 17 in this embodiment are formed by machining each of the vertical wall 14 and the side part 11e.

  Further, as shown in FIGS. 3A and 3B, the vertical wall 14 is formed with a notch 14a. A protrusion 18 (tube member) of the auxiliary air chamber member 13 to be described later is fitted into the notch portion 14a. The notch portion 14a in the present embodiment is formed simultaneously with the vertical wall 14 when the rim 11 is cast, or is formed by machining the vertical wall 14.

  As shown in FIG. 2, the disk 12 is continuously formed radially inward from the end of the rim 11 on the vehicle outer side. The rim 11 and the disk 12 are manufactured from, for example, a lightweight high-strength material such as an aluminum alloy or a magnesium alloy. These materials are not limited, and may be formed from steel (steel) or the like. The vehicle wheel 10 may be a spoke wheel.

  Next, the auxiliary air chamber member 13 will be described. FIG. 4 referred to here is a side cross-sectional view of the vehicle wheel, and is a view showing an arrangement position of the auxiliary air chamber member. FIG. 5A is a perspective view of the auxiliary air chamber member. FIG. 5B is a cross-sectional view taken along the line AA ′ of FIG. 5A and a partial cross-sectional view on the A side. FIG.5 (c) is CC sectional drawing of Fig.5 (a). FIG.5 (d) is the fragmentary top view which looked at the protrusion part of the sub air chamber member from the D direction of Fig.5 (a).

  As shown in FIG. 4, the auxiliary air chamber member 13 is a member that is long in one direction and is arranged along the circumferential direction of the well portion 11c, and has an auxiliary air chamber SC therein. And the four sub air chamber members 13 in this embodiment are arrange | positioned at equal intervals along the surrounding surface of the well part 11c. That is, the vehicle wheel 10 according to the present embodiment includes two sets of a pair of auxiliary air chamber members 13 facing each other with the center of the rim 11 (hereinafter, simply referred to as “rim center”) interposed therebetween.

  As shown in FIGS. 5A and 5B, the auxiliary air chamber member 13 is curved in the longitudinal direction thereof along the outer peripheral surface 11d of the well portion 11c (see FIG. 5B). ing. The auxiliary air chamber member 13 includes a main body portion 13a in which the auxiliary air chamber SC is formed, and a plate-like edge portion 13e extending from the main body portion 13a to the periphery thereof. The thickness t1 of the edge portion 13e is the same as the thickness t2 of the main body portion 13a. In addition, the edge part 13e in this embodiment has spring elasticity by determining the thickness t1 and the material mentioned later suitably.

  Here, referring to FIG. 3A including a cross-sectional view of the auxiliary air chamber member 13 corresponding to the BB cross section of FIG. 5A, the auxiliary air chamber member 13 includes the first vertical wall surface 15 and the second vertical wall surface 15. And is fixed on the outer peripheral surface 11d of the well portion 11c. More specifically, the edge portion 13e extends to the first vertical wall surface 15 side and the second vertical wall surface 16 side and fits into each groove portion 17, and as shown in FIG. 5B, the main body portion 13a. Extends in the circumferential direction along the outer peripheral surface 11d of the well portion 11c. Incidentally, as shown in FIG. 3A, the auxiliary air chamber member 13 has both end edges 13c of an edge portion 13e extending from the main body portion 13a to the first vertical wall surface 15 side and the second vertical wall surface 16 side, respectively. , 13 c are engaged with the respective groove portions 17, thereby being locked to the first vertical wall surface 15 and the second vertical wall surface 16.

  As shown in FIG. 3A, the auxiliary air chamber member 13 is curved so as to protrude toward the outer peripheral surface 11d side of the well portion 11c between both end edges 13c and 13c. That is, the bottom plate 25a constituting the outer peripheral surface 11d side of the main body portion 13a and the edge portion 13e extending from the bottom plate 25a are integrated to form a so-called curved portion. By the way, as will be described later, when the centrifugal force due to the rotation of the wheel acts, the auxiliary air chamber member 13 tries to reverse in the direction in which the curved portion 13d is convex, and the first vertical wall surface 15 and the second vertical wall member 13 The pressing force of both end edges 13c, 13c against the vertical wall surface 16 is increased.

  Further, as shown in FIGS. 5A and 5D, the auxiliary air chamber member 13 protrudes from the main body portion 13a in a direction Y (a direction orthogonal in the present embodiment) that intersects the rotation direction X of the wheel. Projecting portion 18 is provided. Incidentally, as shown in FIG. 5D, a gap G is formed between the protrusion 18 and the edge 13e.

  As shown in FIG. 3B, the protrusion 18 extends toward the vertical wall 14 and is fitted into a notch 14 a formed in the vertical wall 14. Incidentally, the gaps G and G are easily fitted into the groove portion 17 of the first vertical wall surface 15 (see FIG. 3A) due to the bending of the edge portion 13e when the protruding portion 18 is fitted into the notch portion 14a. Is. As shown in FIG. 5C, the protruding portion 18 in the present embodiment is formed of a pipe member. Inside the pipe member 18, a sub air chamber SC and a tire air chamber MC (see FIG. 2). ) Are formed.

  The shape of the sub air chamber SC formed in the sub air chamber member 13 is not particularly limited, but a flat shape is preferable in a cross-sectional view, and the sub air chamber SC in the present embodiment is illustrated in FIG. As shown in FIG. 4, the well portion 11c is thin and substantially rectangular in the radial direction.

  The volume of the auxiliary air chamber SC is preferably about 50 to 250 cc. By setting the volume of the sub air chamber SC within this range, the sub air chamber member 13 can sufficiently reduce the weight of the vehicle wheel 10 while suppressing the increase in weight while sufficiently exhibiting the silencing effect. Can do. Further, the length of the auxiliary air chamber member 13 in the circumferential direction is appropriately set in consideration of the adjustment of the weight of the vehicle wheel 10 and the ease of assembling to the well portion 11c, with the same length as the circumferential length of the rim 11 being maximized. Can be set to

  The cross-sectional shape of the communication hole 13b is not particularly limited and is circular in this embodiment, but may be any shape such as an ellipse, a polygon, and a tunnel shape. The diameter of the communication hole 13b is preferably 5 mm or more when the cross section is circular. Further, the communication hole 13b having a cross-sectional shape other than a circle preferably has a diameter of 5 mm or more in terms of the cross-sectional area converted to a circle having the same cross-sectional area.

  The length of the communication hole 13b is set so as to satisfy the expression for obtaining the resonance frequency of the Helmholtz resonator shown in the following (Expression 1).

f ₀ = C / 2π × √ (S / V (L + α × √S)) (Expression 1)
f ₀ (Hz): resonance frequency C (m / s): sound velocity inside the sub-air chamber SC (= sound velocity inside the tire air chamber MC)
V (m ³ ): volume L (m) of the auxiliary air chamber SC: length S (m ² ) of the communication hole 13 b: cross-sectional area of the opening of the communication hole 13 b α: correction coefficient The resonance frequency f ₀ is The resonance frequency of the tire air chamber MC is adjusted. At this time, the resonance frequencies f ₀ of the four sub air chamber members 13 shown in FIG. 4 may all be set to be the same or may be different. Specifically, when two resonance frequencies (f ₁ , f ₂ ) are recognized as the resonance frequencies of the tire air chamber MC, the resonance frequencies f ₀ of the four auxiliary air chamber members 13 are set to (f ₁ + f ₂ ) / 2 can be set. Also, setting the resonance frequency f ₀ of the additional air chamber member 13 of a pair of opposite sides of the rim center f _1, setting the resonance frequency f ₀ of the additional air chamber member 13 of the other pair to f ₂ You can also.

  As a material of the sub air chamber member 13, a general material used for industrial products such as metal, synthetic resin, and rubber can be used. Further, considering the weight reduction of the auxiliary air chamber member 13 and the improvement of mass productivity, the reduction of the manufacturing cost, the securing of the airtightness of the auxiliary air chamber SC, etc., a lightweight and highly rigid blow moldable material is preferable. Polypropylene that is resistant to repeated bending fatigue is preferred.

<First embodiment>
Next, a method for assembling the auxiliary air chamber member 13 to the vehicle wheel 10 according to the first embodiment will be described. FIG. 6 is a perspective view showing the vehicle wheel, the auxiliary air chamber member, and the assembly jig according to the first embodiment. FIG. 7 is a view showing a method of using the assembling jig according to the first embodiment, (a) is a cross-sectional view before press-fitting, (b) is a cross-sectional view after press-fitting, and (c) is a cross-sectional view. It is Z arrow sectional drawing of (b). FIGS. 8A to 8D are views showing a method of assembling the auxiliary air chamber member according to the first embodiment.

  As shown in FIGS. 6 and 7, the assembly jig 30 </ b> A according to the first embodiment includes a fulcrum part 31 that contacts the inner peripheral surface of the rim 11, a power point part 32 that is operated by the operator, And an action point portion 33 that presses the chamber member 13. As shown in FIG. 7A and FIG. 7B, in the state where the width direction end edge 13c of the auxiliary air chamber member 13 is temporarily fixed to the groove portion 17 of the first vertical wall surface 15 of the vehicle wheel 10, When the operator operates the power point portion 32, the other end 13c in the width direction of the auxiliary air chamber member 13 is press-fitted into the groove portion 17 of the second vertical wall surface 16 of the vehicle wheel 10, and both end edges 13c of the auxiliary air chamber member 13 are pressed. , 13c are fitted in the groove portions 17, 17 of the vehicle wheel 10.

Here, the action point portion 33 is formed of the same material as the sub air chamber member 13 or a softer material than the sub air chamber member 13, and is configured not to damage the sub air chamber member 13 during assembly. Yes. Further, as shown in FIG. 7C, the curvature r1 in the circumferential direction of the upper surface (the contact surface with the assembly jig 30) of the edge 13c of the auxiliary air chamber member 13, and the action of the assembly jig 30. The circumferential curvature r2 of the lower surface of the point 33 (the contact surface with the sub air chamber member 13) satisfies the following relationship.
r2 ≧ r1
By setting in this way, when the auxiliary air chamber member 13 is assembled, it is possible to prevent the indentation from being formed in the auxiliary air chamber member 13 by the circumferential end portion of the action point portion 33.

  In the assembling method of the auxiliary air chamber member 13 according to the first embodiment, first, as shown in FIG. 8A, the operator performs the groove portion 17 of the first vertical wall surface 15 of the vehicle wheel 10 ( In FIG. 7), the circumferentially central portion of the width direction one end edge 13 c of the auxiliary air chamber member 13 is temporarily fixed (first step). In the present embodiment, the protrusion 18 of the auxiliary air chamber member 13 can be easily temporarily fixed by fitting into the notch 14 a formed in the first vertical wall surface 15.

  Subsequently, as shown in FIG. 8B, the operator operates the assembly jig 30 </ b> A, so that the width direction other end edge 13 c of the auxiliary air chamber member 13 is formed in the groove portion 17 of the second vertical wall surface 16. The center part in the circumferential direction is press-fitted (second step). By such an operation, both end edges 13 c and 13 c are fitted into the groove portions 17 and 17 of the vehicle wheel 10 at the center in the circumferential direction of the auxiliary air chamber member 13.

  Subsequently, as shown in FIGS. 8C and 8D, when the operator operates the assembling jig 30A, the groove 17 of the second vertical wall surface 16 has a width direction of the auxiliary air chamber member 13 and the like. The edge 13c is sequentially press-fitted from the circumferential central portion toward both circumferential ends (third step). In the present embodiment, as shown in FIG. 8 (c), after one end in the circumferential direction of the width direction other end edge 13c of the auxiliary air chamber member 13 is press-fitted, as shown in FIG. The other circumferential end of the width direction other end edge 13c is press-fitted. By such an operation, both end edges 13 c and 13 c are fitted into the groove portions 17 and 17 of the vehicle wheel 10 at both ends in the circumferential direction of the auxiliary air chamber member 13.

  Next, the effect of the assembly method of the sub air chamber member 13 according to the first embodiment will be described. When the auxiliary air chamber member 13 according to the first embodiment is fixed to the rim 11 (well portion 11c), the edge 13c of FIG. And the second vertical wall surface 16 are fixed by being fitted into the groove portions 17 provided in each. At this time, since the edge portion 13e has the spring elasticity described above, the auxiliary air chamber member 13 is easily and firmly fixed between the first vertical wall surface 15 and the second vertical wall surface 16. .

  According to the assembling method of the sub air chamber member 13 according to the first embodiment, first, the central portion in the circumferential direction of the sub air chamber member 13 is press-fitted, and then sequentially press-fitted from the circumferential central portion toward both ends in the circumferential direction. Therefore, it is possible to prevent the auxiliary air chamber member 13 from being displaced and cannot be assembled, and the auxiliary air chamber member 13 can be assembled reliably and efficiently.

<Second Embodiment>
Next, the assembling method of the auxiliary air chamber member 13 according to the second embodiment will be described focusing on differences from the assembling method according to the first embodiment. FIG. 9 is a view showing a method of using the assembly jig according to the second embodiment, wherein (a) is a cross-sectional view showing before press-fitting, and (b) is a cross-sectional view showing after press-fitting.

  The assembly method of the sub air chamber member 13 according to the second embodiment is different from the assembly method according to the first embodiment in that an assembly jig 30B is used instead of the assembly jig 30A. The assembly jig 30 </ b> B according to the second embodiment replaces the fulcrum part 31 in contact with the inner peripheral surface of the rim 11, and a fulcrum part 34 provided rotatably on a pedestal or the like that fixes the vehicle wheel 10. It has. Also in the method of assembling the sub air chamber member 13 according to the second embodiment using such an assembling jig 30B, the sub air chamber member 13 can be reliably and efficiently provided as in the method of assembling according to the first embodiment. Can be assembled well.

<Third embodiment>
Next, a method for assembling the auxiliary air chamber member 13 according to the third embodiment will be described focusing on differences from the first embodiment. FIG. 10 is a diagram illustrating a method of using the assembly jig according to the third embodiment.

  The assembly method of the auxiliary air chamber member 13 according to the third embodiment is different from the assembly method according to the first embodiment in that an assembly jig 30C is used instead of the assembly jig 30A. An assembly jig 30C according to the third embodiment includes a pair of roller members 35a and 35b. The pair of roller members 35a and 35 can be pressed while rolling in the circumferential direction on the width direction other end edge 13c of the auxiliary air chamber member 13. When such an assembly jig 30C is used, after pressing the circumferential center portion of the other end edge 13c in the width direction of the auxiliary air chamber member 13 into the groove portion 17 (see FIG. 3A) of the second vertical wall surface 16, The other end 13c in the width direction of the auxiliary air chamber member 13 can be sequentially press-fitted so that the press-fitting amounts at both ends are substantially equal from the circumferential central portion toward both circumferential ends. The assembly method using the assembly jig 30C may be manually performed by an operator, and is automated by a drive device that drives the assembly jig 30C and a control device that controls the drive device. It may be what was done.

  As mentioned above, although this embodiment was described, this invention is not limited to the said embodiment, It can implement with a various form. For example, a plurality of (for example, three) assembly jigs 30A according to the first embodiment are prepared and arranged on the auxiliary air chamber member 13, and the assembly jigs 30A at the center in the circumferential direction are arranged at both ends in the circumferential direction. The auxiliary air chamber member 13 can also be assembled by sequentially using the assembling jig 30A to the assembling jig 30A.

  The total length of the action point portion 33 of the assembling jigs 30A and 30B can be appropriately changed according to the number of press-fitting operations by the assembling jigs 30A and 30B. In addition, when multiple press-fitting operations toward both ends in the circumferential direction are required, one end side in the circumferential direction → the other end side in the circumferential direction → one end side in the circumferential direction → the other end side in the circumferential direction →. However, the press-fit operation can be performed toward both ends in the circumferential direction while alternately performing the press-fit operations.

DESCRIPTION OF SYMBOLS 10 Vehicle wheel 13 Subair chamber member 13b Communication hole 13c Edge 14a Notch part 15 1st vertical wall surface 16 2nd vertical wall surface 17 Groove part 18 Protrusion part (tube member)
MC tire air chamber SC secondary air chamber

Claims (2)

When a sub air chamber member having a sub air chamber communicating with the tire air chamber is assembled to the vehicle wheel, the sub air chamber member is formed to rise radially outward from the outer peripheral surface of the vehicle wheel and extend in the circumferential direction of the outer peripheral surface. The auxiliary air chamber member is assembled to the vehicle wheel by fitting both end edges in the width direction of the auxiliary air chamber member into the grooves of a pair of vertical wall surfaces facing each other. And
Disposing one end edge in the width direction of the auxiliary air chamber member in one groove of the pair of vertical wall surfaces;
Press-fitting the other end in the width direction of the auxiliary air chamber member into the other groove of the pair of vertical wall surfaces;
A method of assembling the auxiliary air chamber member, comprising: The step of press-fitting the other end edge in the width direction of the auxiliary air chamber member includes:
Press-fitting a part of the other edge in the width direction of the auxiliary air chamber member into the other groove of the pair of vertical wall surfaces;
A step of sequentially press-fitting the other end edge in the width direction of the auxiliary air chamber member into the other groove portion of the pair of vertical wall surfaces from the part pressed into the circumferential direction;
The method of assembling the auxiliary air chamber member according to claim 1, comprising:

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