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JP2008030505A - Vehicle wheel - Google Patents

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JP2008030505A
JP2008030505A JP2006202837A JP2006202837A JP2008030505A JP 2008030505 A JP2008030505 A JP 2008030505A JP 2006202837 A JP2006202837 A JP 2006202837A JP 2006202837 A JP2006202837 A JP 2006202837A JP 2008030505 A JP2008030505 A JP 2008030505A
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air chamber
rim
auxiliary air
vehicle wheel
chamber member
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JP4843398B2 (en
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Yoichi Kamiyama
洋一 神山
Hisamitsu Takagi
久光 高木
Mikio Kashiwai
幹雄 柏井
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Abstract

【課題】量産性を向上させることができる車両用ホイールを提供することを課題とする。
【解決手段】タイヤ空気室ＭＣ内に副気室部材１３を備える車両用ホイール１０であって、副気室部材１３は、両端部を潰し加工した中空パイプに、その内部に形成された副気室ＳＣとタイヤ空気室ＭＣを連通する連通孔１３ｂを設けて形成され、ホイールのリム１１に固定されている。また、副気室部材１３は、リム１１の外周面で径方向内側に凹んだウェル部１１ｃに固定するようにした。
【選択図】図２An object of the present invention is to provide a vehicle wheel capable of improving mass productivity.
A vehicle wheel 10 having a sub air chamber member 13 in a tire air chamber MC, wherein the sub air chamber member 13 is formed in a hollow pipe whose both ends are crushed and formed in the inside thereof. A communication hole 13b is provided to communicate the chamber SC and the tire air chamber MC, and is fixed to the rim 11 of the wheel. The auxiliary air chamber member 13 is fixed to the well portion 11 c that is recessed radially inward on the outer peripheral surface of the rim 11.
[Selection] Figure 2

Description

本発明は、タイヤ空気室内の気柱共鳴（空洞共鳴）に伴う騒音を低減する車両用ホイールに関するものである。   The present invention relates to a vehicle wheel that reduces noise associated with air column resonance (cavity resonance) in a tire air chamber.

一般に、タイヤの空気室（以下、「タイヤ空気室」という。）内で生じる気柱共鳴が、自動車のロードノイズの要因となることが知られている。気柱共鳴とは、路面からタイヤに伝わるランダムな振動がタイヤ空気室内の空気を振動させ、その結果、タイヤ空気室の気柱共鳴周波数付近で共鳴現象が起こり、共鳴音が発生する現象である。   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. .

従来、この気柱共鳴に伴う騒音を低減するため、特許文献１に記載された車両用ホイールが知られている。この車両用ホイールでは、リムの周方向に沿って蓋部材を配置するとともに、蓋部材の内側に隔壁を設け、リムと蓋部材との間に複数の副気室を周方向に形成している。また、タイヤ空気室と各副気室とは、蓋部材に形成した連通孔で連通している。この車両用ホイールによれば、連通孔と副気室とがヘルムホルツのレゾネータを構成し、タイヤ空気室内の気柱共鳴音を低減することができる。
国際公開第０３／０２９０２８号パンフレット Conventionally, in order to reduce the noise accompanying this air column resonance, a vehicle wheel described in Patent Document 1 is known. In this vehicle wheel, a lid member is disposed along the circumferential direction of the rim, a partition is provided inside the lid member, and a plurality of auxiliary air chambers are formed in the circumferential direction between the rim and the lid member. . 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.
International Publication No. 03/029028 Pamphlet

しかしながら、従来の車両用ホイールは現実的な構造ではなかった。すなわち、通常のホイールに、隔壁を備えた蓋部材という複雑な板組みの後付け部材を、気密性を保ちつつ、溶接、接着、嵌め込み、締結により結合させる必要があり、気密性の確保や、製造工数や製造コストの増大を考慮すると、量産化に不適であるという問題があった。   However, the conventional vehicle wheel is not a realistic structure. In other words, it is necessary to connect a retrofitting member of a complicated plate assembly, which is a lid member having a partition wall, to a normal wheel by welding, bonding, fitting, and fastening while maintaining airtightness, ensuring airtightness and manufacturing. Considering an increase in man-hours and manufacturing costs, there is a problem that it is not suitable for mass production.

そこで、本発明は、量産性を向上させることができる車両用ホイールを提供することを課題とする。   Then, this invention makes it a subject to provide the wheel for vehicles which can improve mass-productivity.

前記課題を解決するため、請求項１に記載の発明は、タイヤ空気室内に副気室部材を備える車両用ホイールであって、前記副気室部材は、両端部を潰し加工した中空パイプに、その内部に形成された副気室と前記タイヤ空気室を連通する連通孔を設けて形成され、ホイールに固定されていることを特徴とする。   In order to solve the above-mentioned problem, the invention according to claim 1 is a vehicle wheel including a sub air chamber member in a tire air chamber, wherein the sub air chamber member is a hollow pipe whose both ends are crushed, The sub-air chamber formed therein and a communication hole that communicates the tire air chamber are provided and fixed to the wheel.

請求項１に記載の発明によれば、中空パイプの両端部を潰し加工することで、容易に気密性のある副気室を形成することができる。また、ホイールとの結合に際して気密性を考慮しなくても済むので、従来技術のように複雑な板組みと気密性の高い高精度な結合方法を用いる必要がなくなる。これにより、従来技術において生じていた製造工数や製造コストの増大を抑えることができ、量産性を向上させることができる。   According to the first aspect of the present invention, it is possible to easily form an airtight sub-air chamber by crushing both ends of the hollow pipe. Further, since it is not necessary to consider airtightness when coupling with the wheel, it is not necessary to use a complicated plate assembly and a highly accurate coupling method with high airtightness as in the prior art. Thereby, the increase in the manufacturing man-hour and the manufacturing cost which had arisen in the prior art can be suppressed, and mass productivity can be improved.

請求項２に係る発明は、請求項１に記載の車両用ホイールにおいて、前記副気室部材は、リムの外周面で径方向内側に凹んだウェル部に固定されていることを特徴とする。   According to a second aspect of the present invention, in the vehicle wheel according to the first aspect, the auxiliary air chamber member is fixed to a well portion recessed radially inward on the outer peripheral surface of the rim.

請求項２に係る発明によれば、副気室部材をウェル部に固定することで、タイヤがリムに組み付けられた際に、副気室部材がタイヤに干渉しないようになっている。   According to the second aspect of the present invention, the auxiliary air chamber member is fixed to the well portion so that the auxiliary air chamber member does not interfere with the tire when the tire is assembled to the rim.

請求項３に係る発明は、請求項２に記載の車両用ホイールにおいて、前記副気室部材は、ホイールのディスク面から離間した側に設けられていることを特徴とする。   According to a third aspect of the present invention, in the vehicle wheel according to the second aspect, the auxiliary air chamber member is provided on a side of the wheel separated from the disk surface.

請求項３に係る発明によれば、副気室部材をホイールディスク面から離間した側に設けることで、タイヤをリムに組み付ける際におけるタイヤのビード部と副気室部材との干渉を防止し、副気室部材の変形や損傷を抑えることができる。   According to the invention according to claim 3, by providing the auxiliary air chamber member on the side away from the wheel disc surface, the interference between the bead portion of the tire and the auxiliary air chamber member when the tire is assembled to the rim is prevented, Deformation and damage of the auxiliary air chamber member can be suppressed.

本発明の車両用ホイールによれば、副気室部材を取り付けるに際し、高精度な結合方法を用いる必要がないため、製造工数や製造コストの増大を抑えることができる。これにより、量産性を向上させることができる。   According to the vehicle wheel of the present invention, since it is not necessary to use a highly accurate coupling method when attaching the sub air chamber member, it is possible to suppress an increase in manufacturing man-hours and manufacturing costs. Thereby, mass productivity can be improved.

以下、本発明に係る車両用ホイールの実施の形態について、適宜図面を参照しながら詳細に説明する。参照する図面において、図１は、本実施の形態に係る車両用ホイールの斜視図である。また、図２は、図１の車両用ホイールにタイヤを装着した車輪の要部正面断面図である。   Hereinafter, embodiments of a vehicle wheel 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 principal part of a wheel in which a tire is mounted on the vehicle wheel of FIG.

図１に示すように、本実施の形態に係る車両用ホイール１０は、タイヤ２０（図２参照）を装着するためのリム１１と、このリム１１を図示しないハブに連結するためのディスク１２と、リム１１に設けられる副気室部材１３とから構成される。   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), and a disk 12 for connecting the rim 11 to a hub (not shown). The auxiliary air chamber member 13 is provided on the rim 11.

図２に示すように、リム１１は、幅方向の両端部に形成されるビードシート部１１ａ，１１ａと、このビードシート部１１ａ，１１ａから外側に向けてＬ字状に屈曲したリムフランジ部１１ｂ，１１ｂと、ビードシート部１１ａ，１１ａ間において径方向内側に凹んだウェル部１１ｃと、を有する。   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.

ビードシート部１１ａには、タイヤ２０のビード部２１ａが装着される。これにより、リム１１とタイヤ２０の内周面の間に環状の密閉空間からなるタイヤ空気室ＭＣが形成される。なお、タイヤ２０に関して、符号２１はタイヤ本体、符号２２はインナライナを示す。   The bead portion 21a 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. In addition, regarding the tire 20, the code | symbol 21 shows a tire main body and the code | symbol 22 shows an inner liner.

ウェル部１１ｃは、タイヤ２０をリム１１に組み付けるリム組時に、タイヤ２０のビード部２１ａ，２１ａを落とし込むために設けられている。ウェル部１１ｃには、ディスク１２の面（ホイールディスク面）から離間した側に、後記する副気室部材１３が取り付けられている。このように副気室部材１３を配置することで、リム組時の副気室部材１３の変形や損傷を防止することができる。なお、ウェル部１１ｃは、軸方向の長さを可能な限り広く取られている。これにより、リム１１の軽量化を図ることができる。つまり、リム１１において、ウェル部１１ｃの割合を大きくすることで相対的にビードシート部１１ａの割合が小さくなるため、径方向内側に位置するウェル部１１ｃの割合が大きくなるほど軽量化される。   The well portion 11 c is provided for dropping the bead portions 21 a and 21 a of the tire 20 when the rim is assembled to the tire 20. A sub air chamber member 13 to be described later is attached to the well portion 11c on the side away from the surface of the disk 12 (wheel disk surface). By arranging the auxiliary air chamber member 13 in this way, deformation and damage of the auxiliary air chamber member 13 during rim assembly can be prevented. The well portion 11c is made as wide as possible in the axial direction. Thereby, weight reduction of the rim | limb 11 can be achieved. That is, in the rim 11, since the proportion of the bead sheet portion 11a is relatively reduced by increasing the proportion of the well portion 11c, the weight is reduced as the proportion of the well portion 11c located on the radially inner side is increased.

ディスク１２は、リム１１の車両外側端部から径方向内側に連続して形成される。前記リム１１とディスク１２とは、例えば、アルミニウム合金、マグネシウム合金等の軽量高強度材料等から製造される。なお、これらの材料は限定されるものではなく、スチール（鋼）等から形成されるものであってもよい。また、車両用ホイール１０は、スポークホイールであってもよい。   The disk 12 is continuously formed radially inward from the vehicle outer end of the rim 11. The rim 11 and the disk 12 are manufactured from a lightweight high-strength material such as an aluminum alloy or a magnesium alloy, for example. These materials are not limited, and may be formed from steel (steel) or the like. The vehicle wheel 10 may be a spoke wheel.

図３（ａ）は、中空パイプ（加工前の副気室部材）を示す斜視図であり、（ｂ）は、加工後の副気室部材を示す斜視図である。   FIG. 3A is a perspective view showing a hollow pipe (sub-air chamber member before processing), and FIG. 3B is a perspective view showing the sub-air chamber member after processing.

副気室部材１３は、図３（ｂ）に示すように、内部に副気室ＳＣが形成された中空部材であり、全体としてウェル部１１ｃ（図２参照）の周面に沿うような湾曲形状に形成されている。副気室ＳＣの容積は、約２０〜７００ｃｃに設計されている。副気室部材１３は、両端部にフランジ部１３ａ，１３ａ有するとともに、中央部に連通孔１３ｂを有している。   As shown in FIG. 3B, the sub air chamber member 13 is a hollow member in which the sub air chamber SC is formed, and is curved as a whole along the peripheral surface of the well portion 11c (see FIG. 2). It is formed into a shape. The volume of the auxiliary air chamber SC is designed to be about 20 to 700 cc. The auxiliary air chamber member 13 has flange portions 13a and 13a at both ends, and a communication hole 13b at the center portion.

この副気室部材１３は、図３（ａ）に示す円形の中空パイプＰを加工することで形成される。ここで、中空パイプＰは、特に限定するものではないが、その壁厚が約０．３〜１．６ｍｍの薄肉なものを用いることが好ましい。これにより、軽量化を図ることができる。また、中空パイプＰの長さは、ウェル部１１ｃの周長の約１／４とする。さらに、中空パイプＰの材質としては、鉄、アルミニウム合金、ステンレス等の一般的な金属材料や熱可塑性樹脂、その他のプラスチックス等を用いることができる。例えば、中空パイプＰの材料として錆びに弱い金属材料を用いる場合は、形成前に予め表面処理を施しておくことが好ましい。なお、本実施の形態では、円形の中空パイプＰを用いたが、中空パイプの形状は限定されるものではなく、例えば、角形や楕円形の中空パイプを用いるものであってもよい。   The auxiliary air chamber member 13 is formed by processing a circular hollow pipe P shown in FIG. Here, the hollow pipe P is not particularly limited, but it is preferable to use a thin pipe having a wall thickness of about 0.3 to 1.6 mm. Thereby, weight reduction can be achieved. The length of the hollow pipe P is about ¼ of the circumference of the well portion 11c. Furthermore, as a material of the hollow pipe P, a general metal material such as iron, aluminum alloy, stainless steel, a thermoplastic resin, other plastics, or the like can be used. For example, when a metal material that is vulnerable to rust is used as the material of the hollow pipe P, it is preferable to perform a surface treatment in advance before formation. In this embodiment, the circular hollow pipe P is used. However, the shape of the hollow pipe is not limited, and for example, a square or elliptic hollow pipe may be used.

このような中空パイプＰの長さ方向の端部Ｐａ，Ｐａを潰し加工するとともに、ウェル部１１ｃ（図２参照）の周面に沿うように全体として湾曲させることで、図３（ｂ）に示す副気室部材１３が形成される。なお、副気室部材１３の連通孔１３ｂは、ドリルなどの切削工具や打抜き用の工具等で形成可能であり、端部Ｐａを潰し加工する前の中空パイプＰに予め形成しておくものであってもよいし、副気室ＳＣを形成した後に形成するものであってもよい。   The end portions Pa and Pa in the length direction of the hollow pipe P are crushed and curved as a whole along the peripheral surface of the well portion 11c (see FIG. 2), so that FIG. The sub air chamber member 13 shown is formed. The communication hole 13b of the auxiliary air chamber member 13 can be formed with a cutting tool such as a drill or a punching tool, and is formed in advance in the hollow pipe P before crushing the end portion Pa. It may be formed after the sub air chamber SC is formed.

図４は、副気室部材を取り付けた車両用ホイールの側面断面図である。
図４に示すように、副気室部材１３は、部位Ｓ１において、フランジ部１３ａ，１３ａとウェル部１１ｃとがスポット溶接（二枚スポット溶接）されることで、リム１１に固定されている。なお、副気室部材１３の結合方法は、スポット溶接に限定されず、アーク溶接等の他の溶接、摩擦攪拌接合、接着剤による結合や、ボルトとナットによる締結、カシメ等、一般的な工業製品の結合方法を用いることができる。また、このような副気室部材１３は、リム１１のウェル部１１ｃの周方向に沿って、４つ取り付けられている。これにより、車両用ホイール１０において４つの副気室ＳＣを設けることができる。なお、副気室ＳＣの数は、３つ以下であってもよいが、消音効率を向上させるためには４つ以上であることが好ましい。このように副気室部材１３が取り付けられることで、連通孔１３ｂを介して副気室ＳＣとタイヤ空気室ＭＣとが連通する（図２参照）。 FIG. 4 is a side cross-sectional view of the vehicle wheel to which the auxiliary air chamber member is attached.
As shown in FIG. 4, the auxiliary air chamber member 13 is fixed to the rim 11 by spot welding (two-spot welding) of the flange portions 13 a and 13 a and the well portion 11 c at the site S <b> 1. The joining method of the auxiliary air chamber member 13 is not limited to spot welding, but other general industries such as arc welding and other welding, friction stir welding, joining with an adhesive, fastening with bolts and nuts, caulking, etc. Product binding methods can be used. Four such auxiliary air chamber members 13 are attached along the circumferential direction of the well portion 11 c of the rim 11. Thereby, four auxiliary air chambers SC can be provided in the vehicle wheel 10. The number of sub air chambers SC may be three or less, but is preferably four or more in order to improve the silencing efficiency. By attaching the auxiliary air chamber member 13 in this way, the auxiliary air chamber SC and the tire air chamber MC communicate with each other through the communication hole 13b (see FIG. 2).

以上、説明した副気室ＳＣと連通孔１３ｂは、ヘルムホルツのレゾネータを構成する。次の（式１）は、このレゾネータの共鳴周波数を求める式である。   The sub air chamber SC and the communication hole 13b described above constitute a Helmholtz resonator. The following (Expression 1) is an expression for obtaining the resonance frequency of this resonator.

ｆ０＝Ｃ／２π×√（Ｓ／Ｖ（Ｌ＋α×√Ｓ））・・・（式１）
ｆ０（Ｈｚ）：共鳴周波数
Ｃ（ｍ／ｓ）：副気室ＳＣ内部の音速（＝タイヤ空気室ＭＣ内部の音速）
Ｖ（ｍ３）：副気室ＳＣの容積
Ｌ（ｍ）：連通孔１３ｂの長さ
Ｓ（ｍ２）：連通孔１３ｂの開口部断面積
α：補正係数 f 0 = C / 2π × √ (S / V (L + α × √S)) (Equation 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 of the auxiliary air chamber SC L (m): Length of the communication hole 13b S (m 2 ): Cross-sectional area of the opening of the communication hole 13b α: Correction coefficient

この（式１）で求められる共鳴周波数ｆ０をタイヤ空気室ＭＣの共鳴周波数に合わせることで、タイヤ空気室ＭＣ内で発生する共鳴音を低減することができる。なお、この共鳴周波数ｆ０を合わせるため、連通孔１３ｂに各種長さのパイプ部材を取り付けることで、連通孔１３ｂの長さを調整してもよい。 By adjusting the resonance frequency f 0 obtained by (Equation 1) to the resonance frequency of the tire air chamber MC, the resonance sound generated in the tire air chamber MC can be reduced. Incidentally, to match the resonance frequency f 0, by attaching the pipe member for various lengths communication hole 13b, may adjust the length of the communication hole 13b.

以上によれば、本実施の形態において、以下の効果を得ることができる。
本実施の形態では、中空パイプＰの端部Ｐａ，Ｐａを潰し加工することで、容易に副気室ＳＣを形成することができる。 According to the above, the following effects can be obtained in the present embodiment.
In the present embodiment, the sub-air chamber SC can be easily formed by crushing the end portions Pa and Pa of the hollow pipe P.

また、リム１１との結合方法においても気密性を考慮する必要がないので、従来技術のように複雑な板組みと気密性の高い高精度な結合方法を用いる必要がなくなり、製造工数や製造コストの増大を抑えることができる。これにより、量産性を向上させることができる。   Further, since it is not necessary to consider the airtightness in the method of coupling to the rim 11, it is not necessary to use a complicated plate assembly and a highly accurate and highly accurate coupling method as in the prior art. Can be suppressed. Thereby, mass productivity can be improved.

本実施の形態では、リム１１においても、径方向内側に凹んだウェル部１１ｃを軸方向に広く形成したので、ウェル部１１ｃが幅狭に形成される場合と比較して、リム１１自身の軽量化が図られている。従って、副気室部材１３を後付けすることによる重量増加が最小限に抑えられる。   In the present embodiment, also in the rim 11, the well portion 11c that is recessed inward in the radial direction is formed wider in the axial direction, so that the rim 11 itself is lighter than the case where the well portion 11c is formed narrow. It is planned. Accordingly, an increase in weight due to the retrofitting of the auxiliary air chamber member 13 is minimized.

本実施の形態では、予め形成した副気室部材１３をリム１１に取り付ける構造としたので、副気室ＳＣに表面処理材を使用することで、従来と同様に、ホイール製造後の表面処理をすることができる。   In the present embodiment, the auxiliary air chamber member 13 formed in advance is structured to be attached to the rim 11, so that the surface treatment after the wheel manufacturing is performed by using a surface treatment material for the auxiliary air chamber SC as in the conventional case. can do.

以上、本実施の形態について説明したが、本発明は前記実施の形態に限定されず、種々の形態で実施することができる。   Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and can be implemented in various forms.

図５（ａ）は第１の変形例に係る車両用ホイールの側面断面図、（ｂ）は第２の変形例に係る車両用ホイールの側面断面図である。   FIG. 5A is a side sectional view of a vehicle wheel according to a first modification, and FIG. 5B is a side sectional view of a vehicle wheel according to a second modification.

前記実施の形態では、１つの副気室ＳＣを有する副気室部材１３を形成し、この副気室部材１３をリム１１に４つ取り付ける構成としたが、本発明はこれに限定されるものではない。例えば、第１の変形例として図５（ａ）に示すように、副気室部材１５は、４つの副気室ＳＣ１を有するように構成し、これをリム１１に取り付ける構成としてもよい。具体的には、ウェル部１１ｃの周長と略同一の長さを有する中空パイプを用いて、（１）この中空パイプの両端部を含む５箇所の部位１５ａを等間隔に潰し加工することで４つの副気室ＳＣ１を形成し、（２）各副気室ＳＣ１とタイヤ空気室ＭＣ（図２参照）を連通する連通孔１５ｂを形成するとともに、（３）これをウェル部１１ｃの周面に沿って円形に形成して副気室部材１５を形成する。そして、（４）潰し加工して形成した各部位１５ａとウェル部１１ｃを重ね合わせた部位Ｓ２でスポット溶接することで、リム１１に副気室部材１５を固定する。これによれば、１つの副気室部材１５をリム１１に取り付けるだけで４つの副気室ＳＣを形成することができる。また、これにより、前記実施の形態よりも部品点数を削減し、製造管理を容易にすることができる。   In the above embodiment, the sub air chamber member 13 having one sub air chamber SC is formed, and four sub air chamber members 13 are attached to the rim 11. However, the present invention is limited to this. is not. For example, as shown in FIG. 5A as a first modification, the auxiliary air chamber member 15 may be configured to have four auxiliary air chambers SC1 and attached to the rim 11. Specifically, by using a hollow pipe having substantially the same length as the circumference of the well portion 11c, (1) by crushing the five portions 15a including both ends of the hollow pipe at equal intervals Four sub air chambers SC1 are formed, and (2) communication holes 15b are formed to communicate each sub air chamber SC1 with the tire air chamber MC (see FIG. 2), and (3) the peripheral surface of the well portion 11c. The auxiliary air chamber member 15 is formed in a circular shape along Then, (4) the auxiliary air chamber member 15 is fixed to the rim 11 by spot welding at a site S2 where the respective sites 15a formed by crushing and the well portion 11c are overlapped. According to this, it is possible to form four sub air chambers SC simply by attaching one sub air chamber member 15 to the rim 11. In addition, this makes it possible to reduce the number of parts compared to the above-described embodiment and facilitate manufacturing management.

また、例えば、第２の変形例として図５（ｂ）に示すように、副気室部材１６は、２つの副気室ＳＣ２を有するように構成し、２つの副気室部材１６をリム１１に取り付ける構成としてもよい。具体的には、ウェル部１１ｃの周長の約１／２の長さを有する中空パイプを用いて、（１）この中空パイプの両端部を含む３箇所の部位１６ａを等間隔に潰し加工することで２つの副気室ＳＣ２を形成し、（２）各副気室ＳＣ２とタイヤ空気室ＭＣ（図２参照）を連通する連通孔１６ｂを形成するとともに、（３）これをウェル部１１ｃの周面に沿って半円形に形成して副気室部材１６を形成する。そして、（４）このように形成された２つの副気室部材１６をリム１１に固定するため、潰し加工した各部位１６ａとウェル部１１ｃを重ね合わせた部位Ｓ３でスポット溶接することで、リム１１に副気室部材１６を固定する。これによれば、２つの副気室部材１６をリム１１に取り付けるだけで４つの副気室ＳＣを形成することができる。また、これにより、前記実施の形態よりも部品点数を削減し、製造管理を容易にすることができる。   Further, for example, as shown in FIG. 5B as a second modification, the auxiliary air chamber member 16 is configured to have two auxiliary air chambers SC2, and the two auxiliary air chamber members 16 are connected to the rim 11. It is good also as a structure attached to. Specifically, using a hollow pipe having a length that is approximately ½ of the circumference of the well portion 11c, (1) crushing the three portions 16a including both ends of the hollow pipe at equal intervals. As a result, two auxiliary air chambers SC2 are formed, and (2) the communication holes 16b that communicate with the auxiliary air chambers SC2 and the tire air chamber MC (see FIG. 2) are formed, and (3) this is formed in the well portion 11c. The auxiliary air chamber member 16 is formed in a semicircular shape along the peripheral surface. (4) In order to fix the two auxiliary air chamber members 16 formed in this way to the rim 11, the rim 11 is spot welded at a portion S 3 in which the crushed portions 16 a and the well portion 11 c are overlapped. The auxiliary air chamber member 16 is fixed to 11. According to this, it is possible to form four sub air chambers SC simply by attaching the two sub air chamber members 16 to the rim 11. In addition, this makes it possible to reduce the number of parts compared to the above-described embodiment and facilitate manufacturing management.

図６（ａ）は、第３の変形例に係る車両用ホイールの要部側面断面図、（ｂ）は、第４の変形例に係る車両用ホイールの要部側面断面図、（ｃ）は、第５の変形例に係る車両用ホイールの要部側面断面図である。   FIG. 6A is a side sectional view of the main part of the vehicle wheel according to the third modification, FIG. 6B is a side sectional view of the main part of the vehicle wheel according to the fourth modification, and FIG. FIG. 10 is a side cross-sectional view of a main part of a vehicle wheel according to a fifth modification.

前記実施の形態では、副気室部材１３をリム１１に重ね合わせて２枚スポット溶接することで副気室部材１３をリム１１に固定する構成としたが、本発明はこれに限定されるものではない。例えば、第３の変形例として図６（ａ）に示すように、２つの副気室部材１３の各フランジ部１３ａとウェル部１１ｃを重ね合わせ、この重ね合わせた部位Ｓ４でこれらを３枚スポット溶接して固定するものであってもよい。これによれば、フランジ部１３ａ，１３ａを重ね合わせることで、留めつけのためのスペースを縮小し、その分、副気室ＳＣの容積を大きく確保することができる。   In the above-described embodiment, the auxiliary air chamber member 13 is fixed to the rim 11 by superposing the auxiliary air chamber member 13 on the rim 11 and spot-welding two sheets, but the present invention is limited to this. is not. For example, as shown in FIG. 6A as a third modified example, the flange portions 13a and the well portions 11c of the two auxiliary air chamber members 13 are overlapped, and three spots are spotted at the overlapped portion S4. It may be fixed by welding. According to this, by overlapping the flange portions 13a and 13a, the space for fastening can be reduced, and accordingly the volume of the auxiliary air chamber SC can be secured large.

また、例えば、第４の変形例として図６（ｂ）に示すように、リム１１のウェル部１１ｃにスタッドボルトＢを外周側に突出するように鋳込んでおくとともに、副気室部材１３のフランジ部１３ａに孔部１３ｃを設けておき、スタッドボルトＢに孔部１３ｃを挿通後、ナットＮでスタッドボルトＢを締結することで、副気室部材１３をリム１１に固定するものであってもよい。これによれば、溶接機等の専用の装置を用いずとも簡単に結合することができる。   Further, for example, as shown in FIG. 6B as a fourth modified example, the stud bolt B is cast in the well portion 11c of the rim 11 so as to protrude outward, and the auxiliary air chamber member 13 A hole 13c is provided in the flange 13a, and after inserting the hole 13c into the stud bolt B, the stud bolt B is fastened with a nut N to fix the auxiliary air chamber member 13 to the rim 11. Also good. According to this, it can couple | bond easily, without using dedicated apparatuses, such as a welding machine.

さらに、第５の変形例として図６（ｃ）に示すように、リム１１のウェル部１１ｃにカシメ金具Ｍを外周側に突出するように鋳込んでおくとともに、副気室部材１３のフランジ部１３ａに孔部１３ｃを設けておき、カシメ金具Ｍに孔部１３ｃを挿通後、カシメ金具Ｍの頭部Ｍａをかしめることで、副気室部材１３をリム１１に固定するものであってもよい。これによれば、溶接機等の専用の装置を用いずとも簡単に結合することができる。   Further, as shown in FIG. 6C as a fifth modification, a caulking fitting M is cast into the well portion 11c of the rim 11 so as to protrude to the outer peripheral side, and the flange portion of the auxiliary air chamber member 13 is provided. Even if the auxiliary air chamber member 13 is fixed to the rim 11 by providing a hole 13c in 13a and caulking the head Ma of the caulking metal fitting M after inserting the hole 13c into the caulking metal fitting M. Good. According to this, it can couple | bond easily, without using dedicated apparatuses, such as a welding machine.

なお、第４の変形例および第５の変形例では、１つのスタッドボルトＢまたはカシメ金具Ｍにおいて、１つの副気室部材１３を固定するものであってもよいし、２つの副気室部材１３を固定するものであってもよい。また、スタッドボルトＢやカシメ金具Ｍは、リム１１に予め鋳込んでおくものとしたが、その他、リム１１に溶接したり、接着したりするものであってもよい。   In the fourth modification and the fifth modification, one auxiliary air chamber member 13 may be fixed by one stud bolt B or caulking fitting M, or two auxiliary air chamber members. 13 may be fixed. Moreover, although the stud bolt B and the caulking metal fitting M are assumed to be cast in the rim 11 in advance, the stud bolt B and the caulking metal fitting M may be welded or bonded to the rim 11.

図７（ａ）は、第６の変形例に係る車両用ホイールの要部正面断面図、（ｂ）は、第７の変形例に係る車両用ホイールの要部正面断面図である。   FIG. 7A is a front sectional view of a main part of a vehicle wheel according to a sixth modification, and FIG. 7B is a front sectional view of a main part of a vehicle wheel according to the seventh modification.

前記実施の形態では、副気室部材１３を、ウェル部１１ｃのディスク１２の面（ホイールディスク面）から離間した側に取り付ける構成としたが、本発明はこれに限定されない。例えば、第６の変形例として図７（ａ）に示すように、副気室部材１３をウェル部１１ｃの幅方向中央に取り付ける構成としてもよいし、第７の変形例として図７（ｂ）に示すように、副気室部材１３をウェル部１１ｃのディスク１２の面（ホイールディスク面）に近接した側に取り付ける構成としてもよい。   In the above embodiment, the auxiliary air chamber member 13 is attached to the side of the well portion 11c that is separated from the surface of the disk 12 (wheel disk surface), but the present invention is not limited to this. For example, as shown in FIG. 7A as a sixth modification, the auxiliary air chamber member 13 may be attached to the center in the width direction of the well portion 11c, and as a seventh modification, FIG. As shown, the auxiliary air chamber member 13 may be attached to the side of the well portion 11c close to the surface of the disk 12 (wheel disk surface).

本実施の形態に係る車両用ホイールの斜視図である。It is a perspective view of the wheel for vehicles concerning this embodiment. 図１の車両用ホイールにタイヤを装着した車輪の要部正面断面図である。It is principal part front sectional drawing of the wheel which attached the tire to the vehicle wheel of FIG. （ａ）は、中空パイプ（加工前の副気室部材）を示す斜視図であり、（ｂ）は、加工後の副気室部材を示す斜視図である。(A) is a perspective view which shows a hollow pipe (sub-air chamber member before a process), (b) is a perspective view which shows the sub-air chamber member after a process. 副気室部材を取り付けた車両用ホイールの側面断面図である。It is side surface sectional drawing of the wheel for vehicles which attached the sub air chamber member. （ａ）は第１の変形例に係る車両用ホイールの側面断面図、（ｂ）は第２の変形例に係る車両用ホイールの側面断面図である。(A) is side sectional drawing of the vehicle wheel which concerns on a 1st modification, (b) is side sectional drawing of the vehicle wheel which concerns on a 2nd modification. （ａ）は、第３の変形例に係る車両用ホイールの要部側面断面図、（ｂ）は、第４の変形例に係る車両用ホイールの要部側面断面図、（ｃ）は、第５の変形例に係る車両用ホイールの要部側面断面図である。(A) is principal part side surface sectional drawing of the vehicle wheel which concerns on a 3rd modification, (b) is principal part side surface sectional drawing of the vehicle wheel which concerns on a 4th modification example, (c) is 1st FIG. 6 is a side sectional view of a main part of a vehicle wheel according to a modified example of FIG. （ａ）は、第６の変形例に係る車両用ホイールの要部正面断面図、（ｂ）は、第７の変形例に係る車両用ホイールの要部正面断面図である。(A) is principal part front sectional drawing of the vehicle wheel which concerns on a 6th modification, (b) is principal part front sectional drawing of the vehicle wheel which concerns on a 7th modification.

符号の説明Explanation of symbols

１０ 車両用ホイール
１１ リム
１１ａ ビードシート部
１１ｂ リムフランジ部
１１ｃ ウェル部
１２ ディスク
１３ 副気室部材
１３ａ フランジ部
１３ｂ 連通孔
１３ｃ 孔部
２０ タイヤ
２１ａ ビード部
ＭＣ タイヤ空気室
Ｐ 中空パイプ
Ｐａ 端部
ＳＣ 副気室 DESCRIPTION OF SYMBOLS 10 Vehicle wheel 11 Rim 11a Bead seat part 11b Rim flange part 11c Well part 12 Disc 13 Sub air chamber member 13a Flange part 13b Communication hole 13c Hole part 20 Tire 21a Bead part MC Tire air chamber P Hollow pipe Pa End part SC Secondary part Air chamber

Claims (3)

タイヤ空気室内に副気室部材を備える車両用ホイールであって、
前記副気室部材は、両端部を潰し加工した中空パイプに、その内部に形成された副気室と前記タイヤ空気室を連通する連通孔を設けて形成され、ホイールに固定されていることを特徴とする車両用ホイール。 A vehicle wheel comprising a sub air chamber member in a tire air chamber,
The auxiliary air chamber member is formed by providing a communication hole that communicates the auxiliary air chamber formed in the hollow air pipe with both ends thereof and the tire air chamber, and is fixed to the wheel. A wheel for vehicles. 前記副気室部材は、リムの外周面で径方向内側に凹んだウェル部に固定されていることを特徴とする請求項１に記載の車両用ホイール。   The vehicle wheel according to claim 1, wherein the auxiliary air chamber member is fixed to a well portion that is recessed radially inward on an outer peripheral surface of the rim. 前記副気室部材は、ホイールディスク面から離間した側に設けられていることを特徴とする請求項２に記載の車両用ホイール。   The vehicle wheel according to claim 2, wherein the auxiliary air chamber member is provided on a side separated from a wheel disc surface.
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