JP2020111257A - Vehicular tire wheel assembly - Google Patents

Abstract

To provide a vehicular tire wheel assembly which allows a helmholtz resonator to be provided at low cost.SOLUTION: A vehicular tire wheel assembly 1 includes a wheel 2 appearing in a cylindrical shape, a tire 30 attached to an outer peripheral surface of the wheel 2, and a sub chamber member 40 accommodated in a tire air chamber S1 constituted by the wheel 2 and the tire 30. The wheel 2 has a pair of bead seats in a width direction to which the tire 30 is attached, and a first peripheral wall part 21 formed between the bead seats and having a dimeter smaller than that of the bead seat. The sub chamber member 40 includes a fixing member 50 provided in the first peripheral wall part 21, penetrating through a first side wall part 22 formed away from the bead seat at one end part in the width direction of the first peripheral wall part 21, and fixing the sub chamber member 40.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle tire wheel assembly.

Conventionally, there is a Helmholtz resonator arranged on the outer peripheral surface of a well portion of a wheel for a vehicle, in which both edge portions protruding in the wheel width direction are locked in a circumferential groove provided in a rim. It is known (for example, refer to Patent Document 1). When this Helmholtz resonator is pressed toward the outer peripheral surface of the well portion, both edge portions thereof are elastically deformed and easily fit into the circumferential groove. Therefore, such a Helmholtz resonator can be easily attached to the wheel.

JP 2012-45971 A

However, in the conventional wheel having such a Helmholtz resonator (for example, refer to Patent Document 1), a peripheral groove for attaching the resonator must be cut and formed in the rim. Therefore, this wheel has a problem that the manufacturing process becomes complicated and the manufacturing cost increases.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle tire wheel assembly capable of providing a Helmholtz resonator at low cost.

In order to solve the above-mentioned problems, a vehicle tire wheel assembly of the present invention includes a wheel having a cylindrical shape, a tire attached to an outer peripheral surface of the wheel, and a space formed by the wheel and the tire. Helmholtz resonator is provided, the wheel has a pair of width direction bead seats to which the tire is attached, and a well portion formed between the bead seats and having a diameter smaller than the bead seats, The Helmholtz resonator is provided in the well portion, and penetrates a side wall portion formed between the well portion and the bead sheet at one end in the width direction of the well portion, and includes a fixing member that fixes the Helmholtz resonator. Characterize.

According to the present invention, since it is not necessary to form a circumferential groove for fixing the Helmholtz resonator to the wheel, a vehicle tire wheel assembly having the Helmholtz resonator can be provided at low cost.

It is a figure which shows typically the tire wheel assembly for vehicles which concerns on embodiment of this invention, and is the figure which looked at the state which removed the disc from the axial direction of the rotating shaft. It is sectional drawing which shows typically the tire wheel assembly for vehicles which concerns on embodiment of this invention, and is a II-II sectional view taken on the line of FIG. It is the elements on larger scale of the Helmholtz resonator concerning the embodiment of the present invention, (a) is a figure showing the state before adhesion typically, (b) is a figure showing the state after adhesion typically, and (c) is a figure. It is a figure which shows the state after fixing with a fixing member typically.

Next, a vehicle tire wheel assembly according to an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. In FIGS. 1 to 3 referred to, “X” is the circumferential direction of the vehicle tire wheel assembly, “Y” is the width direction of the vehicle tire wheel assembly (axial direction of the rotation axis), “Z” indicates the radial direction of the vehicle tire wheel assembly, respectively.

<Embodiment>
As shown in FIGS. 1 and 2, a vehicle tire wheel assembly 1 according to an embodiment of the present invention includes a wheel 2, a tire 30, a sub air chamber member (helmholtz resonator) 40, and a fixing member 50. And a seal member 60. Here, the assembly of the wheel 2, the sub air chamber member 40, the fixing member 50, and the seal member 60 constitutes a vehicle wheel.

<wheel>
The wheel 2 is a metal member such as an aluminum alloy or a magnesium alloy. The wheel 2 is formed in a substantially bottomed cylindrical shape by joining a disk 10 having a substantially disk shape and a rim 20 having a substantially cylindrical shape by welding or the like.

≪Disc≫
The disk 10 is a portion that is connected to a hub (not shown), and is provided at an opening of a width direction end of the rim 20 (end on the vehicle width direction outer side). In the present embodiment, the disc 10 is a so-called spoke disc. The disk 10 is omitted in FIG.

≪Rim≫
The rim 20 includes a first peripheral wall portion 21 at an intermediate portion in the width direction, a first side wall portion 22 extending radially outward from one end portion in the width direction of the first peripheral wall portion 21, and a first side wall portion 22. Of the second peripheral wall portions 23, 23, and the second peripheral wall portions 23, 23 extending outward in the width direction from the radial outer end portion or the other end portion in the width direction of the first peripheral wall portion 21. A pair of second side wall portions 24, 24 extending radially outward from the width direction outer end portions, and a pair extending outward in the width direction from the radial direction outer end portions of the second side wall portions 24, 24. And the end wall portions 25, 25 are integrally provided. A combination of the second peripheral wall portion 23, the second side wall portion 24, and the end wall portion 25 at both widthwise ends of the rim 20 constitutes a bead seat to which the tire 30 is attached. In addition, the first peripheral wall portion 21 constitutes a well portion that is recessed radially inward between the pair of bead sheets.

Of the outer peripheral surface of the first peripheral wall portion 21 forming the well portion, one side in the width direction (vehicle outer side, disk 10 side) is a bottom surface 21a having the same diameter in the width direction, and the other side in the width direction (vehicle side). The inner side) is an inclined surface 21b having a larger diameter toward the inner end in the width direction. In the present embodiment, the inclined surface 21b connects the widthwise inner end of the bottom surface 21a and the widthwise one end of the second peripheral wall portion 23. Further, a plurality of through holes 22a are formed in the first side wall portion 22, which is one side in the width direction (on the side of the bottom surface 21a), at a position where the spokes of the disk 10 are avoided.

<Tires>
The tire 30 is a member mainly made of resin that is attached to the outer peripheral surface of the wheel 2 and constitutes an annular tire air chamber S1 together with the wheel 2. The tire 30 integrally includes a peripheral wall portion 31 having an annular shape having a diameter larger than that of the rim 20, and a pair of side wall portions 32, 32 extending inward in the radial direction from both ends in the width direction of the peripheral wall portion 31. .. The peripheral wall portion 31 is a so-called tread portion that contacts the road surface. The base end portion (radially outer end portion) of the side wall portion 32 is a so-called shoulder portion. An intermediate portion (radially intermediate portion) of the side wall portion 32 is a so-called sidewall portion. The tip portion (radially inner end portion) of the side wall portion 32 is a so-called bead portion that is fixed to the bead seat of the rim 20 when the tire air chamber S1 is filled with air.

<Sub air chamber member>
The sub air chamber member 40 is a member for silencing the resonance sound (air column resonance sound) generated in the tire air chamber S1 by Helmholtz resonance. The sub air chamber member 40 includes a plurality of (four in the present embodiment) resin members arranged in the circumferential direction (for example, polyamide resin (having polyamide MXD6 as a base resin), synthetic resin such as 6 nylon). Is. The sub air chamber member 40 can be manufactured by blow molding or the like.

The sub air chamber member 40 is provided with a bottom wall portion 41 extending in the circumferential direction and having an arcuate shape in an axial view, and a pair of circumferential directions extending radially outward from both circumferential end portions of the bottom wall portion 41. The side wall portions 42, 42, a pair of width direction side wall portions 43, 43 extending radially outward from the width direction end portions of the bottom wall portion 41, the circumferential side wall portions 42, 42, and the width direction side wall portion 43. , 43, which extend in the circumferential direction so as to connect the upper ends of the ceiling walls 43, 43, and have an arcuate shape in an axial view. In addition, the sub air chamber member 40 includes a pipe portion 45 protruding from one of the wall portions (the ceiling wall portion 44 in the present embodiment). The pipe portion 45 functions as a communication hole that connects the sub air chamber S2, which is a space inside the sub air chamber member 40, and the tire air chamber S1. Further, holes 41a are formed on one side in the width direction at both circumferential ends of the bottom wall portion 41.

In the present embodiment, the four sub air chamber members 40 are arranged in the circumferential direction so as to have rotational symmetry of 90°. It should be noted that the four sub air chamber members 40 only need to be arranged such that the openings (that is, the portions exhibiting the silencing function) on the tip end side of the tube portion 45 are arranged at 90° intervals.

The width of the sub air chamber member 40 is sufficiently smaller than the width of the first peripheral wall portion 21 that is the well portion, and is less than or equal to the width of the inclined surface 21b in the present embodiment. Further, the bottom wall portion 41 of the sub air chamber member 40 is formed so as to go radially outward toward the outer end in the width direction, similarly to the inclined surface 21b.

<Fixing member>
The fixing member 50 is a metal member that is inserted into the through hole portion 22 a of the first side wall portion 22 and fixes the sub air chamber member 40. In this embodiment, the fixing member 50 has a head portion 51 having a diameter larger than that of the through hole portion 22a, and extends from the head portion 51. The formed shaft portion 52 is integrally provided.

<Seal member>
The seal member 60 is a rubber or resin member that hermetically seals between the through hole portion 22a and the fixing member 50 (shaft portion 52) inserted into the through hole portion 22a. The seal member 60 has a cylindrical tubular portion 61 provided between the through hole portion 22 a and the shaft portion 52, and extends from the end of the tubular portion 61 to the outside in the radial direction of the tubular portion 61. The flange portion 62 is integrally provided. The seal member 60 has a function of airtightly closing the space between the through-hole portion 22a and the fixed member 50, and also has a function of preventing the fixed member 50 from coming off to the disk 10 side due to the air pressure of the tire air chamber S1.

<Assembly method of the sub air chamber member to the well portion>
As shown in FIG. 3A, the operator places the sub air chamber member 40 on the inclined surface 21 b in a state where the adhesive (adhesive layer) 70 is provided on the bottom wall portion 41 of the sub air chamber member 40. (See FIG. 2B). Subsequently, the worker inserts the shaft portion 52 of the fixing member 50 into the through hole portion 22a from one side in the width direction and fits the seal member 60 onto the shaft portion 52.

As shown in FIG. 3C, subsequently, the worker rotates the fixing member 50 around the axis of the fixing member 50 to insert the male screw portion 52 a into the bottom wall portion 41 of the sub air chamber member 40. Thus, the auxiliary air chamber member 40 is fixed while forming the hole portion 41a in the bottom wall portion 41. Subsequently, the worker press-fits the tubular portion 61 of the seal member 60 between the through hole portion 22a and the shaft portion 52. Here, the flange portion 62 of the seal member 60 contacts the side surface of the tire air chamber S1 of the first side wall portion 22. After that, the operator places air in the tire air chamber S1 while arranging the bead portion on the vehicle inner side of the tire 30 on the corresponding bead seat and arranging the bead portion on the vehicle outer side on the bottom surface 21a and/or the shaft portion 52. The tire 30 is assembled to the bead seat by inserting.

When the vehicle is running (when the vehicle tire wheel assembly 1 is rotating), the centrifugal force acting on the sub air chamber member 40 is fixed to the first side wall portion 22 by the fixing member 50. , And acts in the direction of separating from the inclined surface 21b with the through hole portion 22a as a fulcrum. Here, the adhesive 70 reinforces the fixing of the sub air chamber member 40 by the fixing member 50 by fixing the sub air chamber member 40 to the inclined surface 21b.

A vehicle tire wheel assembly 1 according to an embodiment of the present invention includes a wheel 2 having a cylindrical shape, a tire 30 attached to an outer peripheral surface of the wheel 2, and a space formed by the wheel 2 and the tire 30 ( Helmholtz resonator (sub air chamber member 40) housed in the tire air chamber S1), the wheel 2 is formed between a pair of width direction bead seats to which the tire 30 is attached, and the bead seats. And a well portion (first peripheral wall portion 21) having a diameter smaller than that of the bead sheet, the Helmholtz resonator is provided in the well portion, and the bead sheet is provided at one end portion in the width direction of the well portion. It is characterized by comprising a fixing member 50 which penetrates a side wall portion (first side wall portion 22) formed between and and which fixes the Helmholtz resonator.
Therefore, the vehicle tire wheel assembly 1 does not require the processing of the circumferential groove for fixing the Helmholtz resonator to the wheel, and thus can realize cost reduction.

In the vehicle tire wheel assembly 1, the wheel 2 has a spoke disk (disk 10) provided on one of the bead seat sides, and the side wall portion (first side wall portion 22) is one of the side walls. It is characterized in that it is formed between the bead sheet and the well portion.
Therefore, in the vehicle tire wheel assembly 1, since the fixing member 50 is provided so as to penetrate the side wall portion on the side of the disk 10, the Helmholtz resonator can be firmly fixed to the relatively thick side wall portion. it can.
Further, in the vehicle tire wheel assembly 1, since the fixing member 50 is provided so as to penetrate the side wall portion on the disk 10 side, the portion of the fixing member 50 outside the space (tire air chamber S1) is another component. Can be prevented from interfering with.

In the vehicle tire wheel assembly 1, the well portion has an inclined surface 21b having a diameter increasing toward the other end in the width direction, and the Helmholtz resonator is provided on the inclined surface 21b. And
Therefore, the vehicle tire wheel assembly 1 can suitably secure the space in the wheel 2 for housing the brake and the like.

Further, the vehicle tire wheel assembly 1 is characterized in that the fixing member 50 is inserted into the hole portion 41a of the Helmholtz resonator.
Therefore, in the vehicle tire wheel assembly 1, the fixing member 50 can hold the Helmholtz resonator with a simple structure.

Further, the vehicle tire wheel assembly 1 includes a seal member 60 provided between the through hole portion 22a formed in the side wall portion and the fixing member 50 inserted into the through hole portion 22a. And
Therefore, the vehicle tire wheel assembly 1 can more appropriately secure the airtightness of the space (tire air chamber S1).

Further, the vehicle tire wheel assembly 1 is characterized in that the Helmholtz resonator is adhered to the well portion.
Therefore, the vehicle tire wheel assembly 1 can fix the Helmholtz resonator more firmly.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be appropriately modified without departing from the scope of the present invention. For example, the wheel does not have an inclined surface, and the fixing member is provided so as to penetrate a side wall portion formed between the well portion and the bead seat on the side opposite to the disc. Good. Further, the Helmholtz resonator may be preliminarily formed with a hole having a female screw portion that can be screwed into the male screw portion of the fixing member. Further, the vehicle tire wheel assembly 1 serves as a seal member, which is provided between the head portion 51 of the fixing member 50 and the first side wall portion 22 in place of the seal member 60 and hermetically closes the through hole portion 22a. The configuration may include an O-ring and a nut that is screwed with the shaft portion 52 of the fixing member 50 and that cooperates with the head portion 51 to sandwich the first side wall portion 22.

1 Tire wheel assembly for vehicle 2 Wheel 21 First peripheral wall part (well part)
21b Sloping surface 22 First side wall 22a Through hole 30 Tire 40 Sub air chamber member (Helmholtz resonator)
41a Hole 50 Fixing member 60 Sealing member 70 Adhesive

Claims (6)

A wheel with a cylindrical shape,
A tire attached to the outer peripheral surface of the wheel,
A Helmholtz resonator housed in a space formed by the wheel and the tire,
Equipped with
The wheel is
A pair of width direction bead sheets to which the tire is attached,
A well portion formed between the bead sheets and having a diameter smaller than that of the bead sheets,
Have
The Helmholtz resonator is provided in the well portion,
A tire wheel assembly for a vehicle, comprising: a fixing member that penetrates a sidewall formed between the well portion and one end in the width direction and is formed between the well portion and the Helmholtz resonator. The wheel has a spoke disc provided on one of the bead seat sides,
The vehicle tire wheel assembly according to claim 1, wherein the side wall portion is formed between one of the bead seats and the well portion. The well portion has an inclined surface whose diameter increases toward the other end in the width direction,
The vehicle tire wheel assembly according to claim 2, wherein the Helmholtz resonator is provided on the inclined surface. The vehicle tire wheel assembly according to any one of claims 1 to 3, wherein the fixing member is inserted into a hole of the Helmholtz resonator. The seal member provided between the through-hole part formed in the said side wall part and the said fixing member penetrated by the said through-hole part is provided. Any one of Claim 1 to 4 characterized by the above-mentioned. A vehicle tire wheel assembly as described. The vehicle tire wheel assembly according to any one of claims 1 to 5, wherein the Helmholtz resonator is bonded to the well portion.

Images