JP2015134537A - Wheel for two-piece type vehicle - Google Patents

Wheel for two-piece type vehicle Download PDF

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JP2015134537A
JP2015134537A JP2014006362A JP2014006362A JP2015134537A JP 2015134537 A JP2015134537 A JP 2015134537A JP 2014006362 A JP2014006362 A JP 2014006362A JP 2014006362 A JP2014006362 A JP 2014006362A JP 2015134537 A JP2015134537 A JP 2015134537A
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rim
air chamber
disk
vehicle wheel
vehicle
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JP6312443B2 (en
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勇太 磯村
Yuta Isomura
勇太 磯村
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Topy Industries Ltd
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Topy Industries Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a wheel for a two-piece type vehicle capable of equipping a plurality of resonators at low cost for absorbing columnar resonance energy of a tire inner space.SOLUTION: A wheel 1 for a two-piece type vehicle comprises a rim 10 to which a tire is mounted and a disc 20 forming a separate body from the rim 10 and fixed to the rim 10. A flange part 22 of the disc 20 comprises a fitting-in part 22a fitted in a well part 11 (a rim minimum diameter part) of the rim 10 and an extension part 22b extending inward in a central axis direction from the fitting-in part 22a. A sub-air chamber 41 is formed between the extension part 22b of the disk 20 and an opposed surface of the rim 10. The rim 10 is formed with a communication hole 42 for communicating the sub-air chamber 41 with a main air chamber 2 composed of an inner space of the tire, and the resonator 40 is constituted by the sub-air chamber 41 and communication hole 42.

Description

本発明は、タイヤの内部空間で発生する気柱共鳴を低減できる２ピース型の車両用ホイールに関する。   The present invention relates to a two-piece type vehicle wheel that can reduce air column resonance generated in an internal space of a tire.

車両走行中にタイヤが路面から衝撃を受けると、タイヤの内部空間で気柱共鳴が発生し、ロードノイズの原因となる。そのため、この気柱共鳴エネルギーを減衰させる共鳴器（ヘルムホルツ共鳴器）を装備した車両用ホイールが開発されている。   When the tire receives an impact from the road surface while the vehicle is running, air column resonance occurs in the internal space of the tire, causing road noise. Therefore, a vehicle wheel equipped with a resonator (Helmholtz resonator) that attenuates the air column resonance energy has been developed.

上記共鳴器は、副気室と、この副気室をタイヤ内部空間からなる主気室に連通させる連通孔により構成されている。
上記共鳴器は通常、リムの周方向に複数並べて配置されている。タイヤの衝撃入力箇所による減衰効果のばらつきを抑制するためである。 The resonator includes a sub air chamber and a communication hole that communicates the sub air chamber with a main air chamber formed of a tire internal space.
Usually, a plurality of the resonators are arranged side by side in the circumferential direction of the rim. This is to suppress variations in the damping effect due to the impact input location of the tire.

車両用ホイールには大別して、リムとディスクが一体に鋳造された１ピース型と、リムとディスクが別部品からなる２ピース型があるが、本発明に係る２ピース型の車両用ホイールでも１ピース型と同様に種々の共鳴器が開発されている。   Vehicle wheels are roughly classified into a one-piece type in which a rim and a disc are integrally cast, and a two-piece type in which a rim and a disc are separate parts. Various resonators have been developed as well as the piece type.

特許文献１の車両用ホイールでは、リムのビードシート部とディスクのフランジ部との間の空間に円弧形状の中空部材が周方向に複数組み込まれており、これら中空部材の内部空間が上記副気室として提供されている。   In the vehicle wheel of Patent Document 1, a plurality of arc-shaped hollow members are incorporated in the circumferential direction in the space between the bead seat portion of the rim and the flange portion of the disc, and the internal space of these hollow members serves as the auxiliary air. It is provided as a room.

特許文献２〜５に開示された車両用ホイールでは、リム外周に副気室を有する円弧形状の中空部材が周方向に複数取り付けられている。   In the vehicle wheel disclosed in Patent Documents 2 to 5, a plurality of arc-shaped hollow members having a secondary air chamber on the outer periphery of the rim are attached in the circumferential direction.

特開２００４−３０６６５９号公報JP 2004-306659 A 特開２００８− ３０５０５号公報JP 2008-30505 A 特開２００８−２７９９１１号公報JP 2008-279911 A 特開２００９−１０７３５７号公報JP 2009-107357 A 特開２００９−２４８８７０号公報JP 2009-248870 A

上述したように、共鳴器を備えた従来の２ピース型の車両用ホイールでは、副気室を形成するために、リムおよびディスクとは別部材からなる中空部材を必要とするため、製造コストが高かった。   As described above, the conventional two-piece type vehicle wheel provided with the resonator requires a hollow member that is a separate member from the rim and the disk in order to form the auxiliary air chamber. it was high.

本発明は、上記課題を解決したもので、タイヤが装着されるリムと、このリムと別体をなしてリムに固定されたディスクとを備えた２ピース型の車両用ホイールにおいて、上記リムと上記ディスクの対向面が一部領域において互いに離間し、これら対向面によって画成された閉塞空間が副気室として提供され、上記リムには、上記副気室を上記タイヤの内部空間からなる主気室に連通させる連通孔が形成され、上記副気室と上記連通孔により、上記主気室での気柱共鳴を低減させる共鳴器が構成されることを特徴とする。
上記構成によれば、リムとディスクの対向面間に副気室が形成されるので、副気室のための中空部材を別途必要とせず、製造コストを低減させることができる。 The present invention solves the above-mentioned problems, and in a two-piece type vehicle wheel comprising a rim on which a tire is mounted and a disc fixed to the rim separately from the rim, the rim and The opposed surfaces of the disk are separated from each other in a partial area, and a closed space defined by the opposed surfaces is provided as a secondary air chamber. A communication hole communicating with the air chamber is formed, and the sub air chamber and the communication hole constitute a resonator that reduces air column resonance in the main air chamber.
According to the above configuration, since the auxiliary air chamber is formed between the opposed surfaces of the rim and the disk, a separate hollow member for the auxiliary air chamber is not required, and the manufacturing cost can be reduced.

車両用ホイールを車両に装着した状態で車両用ホイールの中心軸に沿って車両を向く方向を中心軸方向内向きとし、車両と反対方向を中心軸方向外向きとした場合において、
好ましくは、上記ディスクは、略円盤形状をなす円盤部とこの円盤部の周縁から中心軸方向内向きに延びる略円筒形状のフランジ部を有し、上記ディスクのフランジ部の少なくとも一部が、上記リムの最小径部に嵌入され、上記ディスクのフランジ部と上記リムの対向面間に、上記副気室が形成されている。
この構成によれば、車両用ホイールの外観に影響を与えることなく、共鳴器を装備することができる。 In the state where the vehicle wheel is mounted on the vehicle, the direction facing the vehicle along the central axis of the vehicle wheel is the center axis direction inward, and the opposite direction to the vehicle is the center axis direction outward.
Preferably, the disc has a disc portion having a substantially disc shape and a substantially cylindrical flange portion extending inwardly in the central axis direction from the periphery of the disc portion, and at least a part of the flange portion of the disc is the The auxiliary air chamber is formed between the flange portion of the disk and the facing surface of the rim, and is fitted into the smallest diameter portion of the rim.
According to this configuration, the resonator can be equipped without affecting the appearance of the vehicle wheel.

好ましくは、上記ディスクのフランジ部が、上記リム最小径部に嵌入される嵌入部と、この嵌入部から中心軸方向内向きに延びる延長部を有し、上記リムにおいて上記リム最小径部より中心軸方向内向きに位置する内側部位と、上記ディスクの延長部との間に、上記副気室が形成されている。
この構成によれば、比較的簡単な構造で副気室を得ることができる。また、上記延長部は、ホイールの車軸への固定部の中心を通って車両前後方向に延びる軸から中心軸方向内側に離れているため、この延長部の質量により、当該軸を中心としたホイールの慣性モーメントを増大させることができ、当該軸を中心とするホイールの振動に起因したロードノイズの低減をも図ることができる。 Preferably, the flange portion of the disk has an insertion portion to be inserted into the rim minimum diameter portion and an extension portion extending inward in the central axis direction from the insertion portion, and the center of the rim is more central than the rim minimum diameter portion. The auxiliary air chamber is formed between the inner portion located inward in the axial direction and the extension of the disk.
According to this configuration, the auxiliary air chamber can be obtained with a relatively simple structure. Further, since the extension portion is separated from the axis extending in the vehicle front-rear direction through the center of the fixing portion of the wheel to the axle, the wheel centered on the axis is caused by the mass of the extension portion. Can be increased, and road noise caused by the vibration of the wheel about the axis can be reduced.

好ましくは、上記延長部の内端縁部が上記リムの上記内側部位に全周にわたって溶接され、上記嵌入部が上記リム最小径部に全周にわたって溶接されることにより、上記副気室が外部から遮断されている。
この構成によれば、ディスクのリムへの固定のための溶接が、副気室の密閉を兼ねているので、この点からも製造コストを低減できる。 Preferably, the inner end edge portion of the extension portion is welded to the inner portion of the rim over the entire circumference, and the fitting portion is welded to the rim minimum diameter portion over the entire circumference so that the auxiliary air chamber is externally attached. It is cut off from.
According to this configuration, since the welding for fixing the disk to the rim also serves as a hermetic seal for the auxiliary air chamber, the manufacturing cost can be reduced also in this respect.

好ましくは、上記延長部の内端縁部が径方向外向きに立ち上がっており、その外周縁が上記リムの上記内側部位に溶接されている。
この構成によれば、副気室の容積を十分に確保することができる。 Preferably, an inner end edge portion of the extension portion rises radially outward, and an outer peripheral edge thereof is welded to the inner portion of the rim.
According to this configuration, a sufficient volume of the auxiliary air chamber can be secured.

好ましくは、 上記ディスクのフランジ部の延長部には周方向に等間隔をおいて径方向外向きに突出する凸部が形成され、この凸部が上記リムの内周に当たることにより、上記副気室が互いに独立して周方向に複数配置されている。
この構成によれば、複数の副気室を別途に仕切部材を用いずに仕切ることができ、この点からも製造コストを低減できる。 Preferably, the extension of the flange portion of the disk is formed with a convex portion projecting radially outward at equal intervals in the circumferential direction, and the convex portion hits the inner circumference of the rim, thereby A plurality of chambers are arranged in the circumferential direction independently of each other.
According to this configuration, the plurality of auxiliary air chambers can be partitioned separately without using a partition member, and the manufacturing cost can be reduced from this point.

具体的態様では、上記ディスクの延長部の内端縁部は、リムにおけるレッジ部、内側ビードシート部、内側フランジ部のいずれかに溶接され、連通孔はウエル部と内側ハンプ部との間の部位、すなわち内側サイドウォール部やレッジ部に形成される。   In a specific aspect, the inner edge portion of the extension portion of the disk is welded to any of the ledge portion, the inner bead seat portion, and the inner flange portion of the rim, and the communication hole is formed between the well portion and the inner hump portion. It is formed in a part, that is, an inner sidewall portion or a ledge portion.

本発明によれば、所望の気柱共鳴減衰効果を有する２ピース型の車両用ホイールを低コストで提供できる。   According to the present invention, a two-piece type vehicle wheel having a desired air column resonance attenuation effect can be provided at low cost.

本発明の第１実施形態をなす車両用ホイールの縦断面図である。It is a longitudinal cross-sectional view of the vehicle wheel which makes 1st Embodiment of this invention. 図１のＡ方向から見た図である。It is the figure seen from the A direction of FIG. 図１の要部の拡大断面図である。It is an expanded sectional view of the principal part of FIG. 本発明の第２実施形態を示す図３相当図である。FIG. 4 is a view corresponding to FIG. 3 showing a second embodiment of the present invention. 本発明の第３実施形態を示す図３相当図である。FIG. 6 is a view corresponding to FIG. 3 showing a third embodiment of the present invention.

以下、本発明の第１実施形態に係わる２ピース型のスチール製車両用ホイール１について、図１〜図３を参照しながら説明する。
図１、図２に示すように、車両用ホイール１は周知の車両用ホイールと同様に、略円筒形状のリム１０と略円盤形状のディスク２０とを備えている。 Hereinafter, a two-piece steel vehicle wheel 1 according to a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the vehicle wheel 1 includes a substantially cylindrical rim 10 and a substantially disk-shaped disc 20, as in the known vehicle wheel.

図１には車両用ホイール１の中心軸Ｌａが示されている。以下の説明において、車両用ホイール１を車両に装着した状態で中心軸Ｌａに沿って車両を向く方向を中心軸方向内向き、車両と反対方向を中心軸方向外向きと定義する。   FIG. 1 shows a central axis La of the vehicle wheel 1. In the following description, a direction facing the vehicle along the central axis La in a state where the vehicle wheel 1 is mounted on the vehicle is defined as inward in the central axis direction, and a direction opposite to the vehicle is defined as outward in the central axis direction.

上記リム１０は、帯板を丸めてその両端を溶接して円筒体を得た後、この円筒体をロール成形することにより得られるものであり、ウエル部１１（最小径部）と、このウエル部１１から中心軸方向外向きに順に、サイドウォール部１２ａ、ハンプ部１３ａ，ビードシート部１４ａ，フランジ部１５ａを有するとともに、このウエル部１１から中心軸方向内向きに順に、サイドウォール部１２ｂ、レッジ部１６、ハンプ部１３ｂ，ビードシート部１４ｂ，フランジ部１５ｂを有している。   The rim 10 is obtained by rolling a belt plate and welding both ends thereof to obtain a cylindrical body, and then roll-molding the cylindrical body. The well portion 11 (minimum diameter portion) and the well The side wall 12a, the hump 13a, the bead sheet 14a, and the flange 15a are provided in order from the portion 11 outward in the central axis direction. It has a ledge portion 16, a hump portion 13b, a bead sheet portion 14b, and a flange portion 15b.

上記ウエル部１１はリム１０において最も小径をなし、タイヤ装着の過程で、タイヤのビード部が一時的に入り込む凹所を提供する。
上記一対のビードシート部１４ａ，１４ｂはタイヤ（図示しない）のビード部を載せ、一対のフランジ部１５ａ，１５ｂはこれらビード部を保持し、一対のハンプ部１３ａ，１３ｂは、これらビード部の横ずれを防止する。
タイヤが装着された状態で、タイヤの内部空間は密閉された主気室２となる。 The well portion 11 has the smallest diameter in the rim 10 and provides a recess into which the tire bead portion temporarily enters during the tire mounting process.
The pair of bead seat portions 14a and 14b carry a bead portion of a tire (not shown), the pair of flange portions 15a and 15b hold these bead portions, and the pair of hump portions 13a and 13b are laterally shifted from each other. To prevent.
When the tire is mounted, the inner space of the tire becomes a sealed main air chamber 2.

上記ディスク２０は平板を絞り成形することにより得られ、円盤部２１と、この円盤部２１の周縁から中心軸方向内向きに延びる略円筒状のフランジ部２２とを有している。
上記円盤部２１はその中央で車軸に固定されるが、周知構造であるのでその詳細な説明を省略する。
上記フランジ部２２が上記リム１０のウエル部１１に嵌入固定されることにより、リム１０とディスク２０からなる２ピース型の車両用ホイール１が得られる。 The disk 20 is obtained by drawing a flat plate, and has a disk part 21 and a substantially cylindrical flange part 22 extending inwardly in the central axis direction from the periphery of the disk part 21.
The disk portion 21 is fixed to the axle at its center, but since it has a well-known structure, its detailed description is omitted.
By fitting and fixing the flange portion 22 to the well portion 11 of the rim 10, the two-piece type vehicle wheel 1 including the rim 10 and the disk 20 is obtained.

次に本発明の特徴部について図１〜図３を参照しながら説明する。上記ディスク２０のフランジ部２２は、上記リム１０のウエル部１１に嵌入される略円筒形状の嵌入部２２ａと、この嵌入部２２ａから中心軸方向内向きに延長された延長部２２ｂとを有している。
上記嵌入部２２ａの中心軸方向外側の縁部は、ウエル部１１に全周にわたって溶接されている。この溶接部位を符号３１で示す。 Next, the features of the present invention will be described with reference to FIGS. The flange portion 22 of the disk 20 has a substantially cylindrical insertion portion 22a that is inserted into the well portion 11 of the rim 10, and an extension portion 22b that extends inward in the central axis direction from the insertion portion 22a. ing.
The edge of the fitting portion 22a on the outer side in the central axis direction is welded to the well portion 11 over the entire circumference. This welding site is indicated by reference numeral 31.

上記ディスク２０のフランジ部２２の延長部２２ｂは、嵌入部２２ａと同径の略円筒形状をなすが、その端縁部２２ｘは径方向外向きに立ち上がって鍔形状をなし、その外周縁が上記リム１０のレッジ部１６の内周面に当たり、全周にわたって溶接されている。この溶接部位を符号３２で示す。本実施形態では端縁部２２ｘは中心軸Ｌａと直交する平面上に位置するが、中心軸Ｌａに対して傾いていてもよい。   The extension portion 22b of the flange portion 22 of the disk 20 has a substantially cylindrical shape having the same diameter as the fitting portion 22a, but its end edge portion 22x rises outward in the radial direction to form a bowl shape, and its outer peripheral edge is the above-described peripheral edge. It hits the inner peripheral surface of the ledge portion 16 of the rim 10 and is welded over the entire periphery. This welding site is indicated by reference numeral 32. In the present embodiment, the end edge portion 22x is located on a plane orthogonal to the central axis La, but may be inclined with respect to the central axis La.

上記ディスク２０のフランジ部２２の延長部２２ｂと、上記リム１０の内側サイドウォール部１２ｂおよびレッジ部１６（上記リム１０においてウエル部１１より中心軸方向内向きに位置する内側部位）の互いの対向面は、後述する凸部２２ｙの形成領域を除いて互いに離れており、これら互いに離れた対向面により、周方向に延びる円弧状の閉鎖空間４１が形成されている。この空間４１が副気室として提供される。   The extension 22b of the flange portion 22 of the disk 20, and the inner sidewall portion 12b of the rim 10 and the ledge portion 16 (the inner portion of the rim 10 positioned inward in the central axis direction from the well portion 11) are opposed to each other. The surfaces are separated from each other except for a region where a convex portion 22y described later is formed, and an arcuate closed space 41 extending in the circumferential direction is formed by the opposed surfaces separated from each other. This space 41 is provided as a secondary air chamber.

上記延長部２２ｂには周方向に等間隔をなして径方向外向きに突出する複数（本実施形態では５つ）の凸部２２ｙが形成されており、これら凸部２２ｙは、サイドウォール部１２ｂおよびレッジ部１６に沿った断面形状をなし、これらの内周面に当接している。その結果、上記副気室４１はこれら凸部２２ｙによって分断され、互いに独立して周方向に配置されている。なお、これら副気室４１は溶接部位３１，３２により外部から遮断されている。   The extension portion 22b is formed with a plurality of (five in this embodiment) convex portions 22y that protrude radially outward at equal intervals in the circumferential direction, and these convex portions 22y are formed on the sidewall portions 12b. And the cross-sectional shape along the ledge part 16 is comprised, and is contact | abutting to these internal peripheral surfaces. As a result, the auxiliary air chamber 41 is divided by the convex portions 22y and is arranged in the circumferential direction independently of each other. These auxiliary air chambers 41 are blocked from the outside by welded portions 31 and 32.

上記レッジ部１６には、上記複数の副気室４１をそれぞれタイヤの内部空間２（主気室）に連通させるための連通孔４２が形成されている。副気室４１と連通孔４２により、共鳴器４０（ヘルムホルツ共鳴器）が構成されている。各共鳴器４０の連通孔４２は副気室４１の例えば周方向中央に位置しており、これにより複数の共鳴器４０の連通孔４２が周方向に等間隔離れている。ただし、連通孔４２の周方向位置は不等間隔であってもよい。   The ledge portion 16 is formed with a communication hole 42 for communicating the plurality of auxiliary air chambers 41 with the tire internal space 2 (main air chamber). The auxiliary air chamber 41 and the communication hole 42 constitute a resonator 40 (Helmholtz resonator). The communication hole 42 of each resonator 40 is located, for example, at the center in the circumferential direction of the auxiliary air chamber 41, so that the communication holes 42 of the plurality of resonators 40 are spaced apart at equal intervals in the circumferential direction. However, the circumferential positions of the communication holes 42 may be unequal intervals.

上記共鳴器４０の共鳴周波数は、副気室４１の体積、連通孔４２の断面積および長さ等により決定されるが、この共鳴周波数が主気室２での気柱共鳴の減衰させたい周波数帯にほぼ対応するように、設計されている。   The resonance frequency of the resonator 40 is determined by the volume of the auxiliary air chamber 41, the cross-sectional area and the length of the communication hole 42, and the resonance frequency is a frequency at which the air column resonance in the main air chamber 2 is to be attenuated. It is designed to almost correspond to the belt.

上記車両用ホイール１のリム構造では、５つ（複数）の共鳴器４０が、車両走行中にタイヤが路面から衝撃を受けた時に生じる主気室２の気柱共鳴のエネルギーを減衰させ、ロードノイズを低減させることができる。５つの共鳴器４０の連通孔４２は周方向に等間隔離間しているので、タイヤの衝撃入力箇所による減衰効果のばらつきを抑制することができる。   In the rim structure of the vehicle wheel 1 described above, the five (plural) resonators 40 attenuate the energy of air column resonance in the main air chamber 2 generated when the tire receives an impact from the road surface while the vehicle is running. Noise can be reduced. Since the communication holes 42 of the five resonators 40 are equally spaced in the circumferential direction, variation in the damping effect due to the impact input location of the tire can be suppressed.

本実施形態では、リム１０とディスク２０だけで、別途中空部材を用いることなく共鳴器４０が得られるので、製造コストを抑えることができる。   In the present embodiment, since the resonator 40 can be obtained by using only the rim 10 and the disk 20 without using a separate hollow member, the manufacturing cost can be reduced.

本実施形態の車両用ホイール１は、ディスク２０のフランジ部２２が延長部２２ｂを有しているので、従来の２ピース型車両用ホイールより質量が増大する。その反面、この延長部２２ｂは、ホイール１を車両に装着した状態にあるときホイール１の車軸への固定部の中心を通って車両の前後方向に延びる軸Ｌｂから中心軸方向内側に離間しているため、この軸Ｌｂ回りの車両用ホイール１の慣性モーメントを増大させることができる。なぜなら、この慣性モーメントは軸Ｌｂからの距離の２乗に比例し、質量に比例するからである。慣性モーメントの増大により、車両用ホイール１の軸Ｌｂ回りの振動を低減でき、この振動に起因したロードノイズを低減できる。   In the vehicle wheel 1 of the present embodiment, since the flange portion 22 of the disk 20 has the extension portion 22b, the mass is increased as compared with the conventional two-piece type vehicle wheel. On the other hand, when the wheel 1 is mounted on the vehicle, the extension portion 22b is separated from the axis Lb extending in the front-rear direction of the vehicle through the center of the fixing portion to the axle of the wheel 1 inward in the central axis direction. Therefore, the moment of inertia of the vehicle wheel 1 around the axis Lb can be increased. This is because this moment of inertia is proportional to the square of the distance from the axis Lb and proportional to the mass. By increasing the moment of inertia, vibration around the axis Lb of the vehicle wheel 1 can be reduced, and road noise caused by this vibration can be reduced.

次に、本発明の他の実施形態について図面を参照しながら説明する。これら実施形態において、先行する実施形態に対応する構成部には同番号を付してその詳細な説明を省略する。   Next, another embodiment of the present invention will be described with reference to the drawings. In these embodiments, components corresponding to the preceding embodiments are assigned the same reference numerals and detailed description thereof is omitted.

図４に示す第２実施形態では、ディスク２０のフランジ部２２の延長部２２ｂは、第１実施形態より長く延び、中心軸方向内向きに漸次径を増大させてテーパ状をなしている。この延長部２２ｂの内端縁部２２ｘが内側ビードシート部１４ｂの内周面に溶接されている。ただし、ディスク２０のフランジ部２２の延長部２２ｂは、中心軸方向内向きに漸次径を縮小させてテーパ状をなしていてもよいし、径を変化させる割合は一定でなくてもよい。   In the second embodiment shown in FIG. 4, the extension 22 b of the flange portion 22 of the disk 20 extends longer than the first embodiment, and has a tapered shape with the diameter gradually increasing inward in the central axis direction. The inner end edge portion 22x of the extension portion 22b is welded to the inner peripheral surface of the inner bead sheet portion 14b. However, the extension portion 22b of the flange portion 22 of the disk 20 may be tapered by gradually reducing the diameter inward in the central axis direction, and the ratio of changing the diameter may not be constant.

上記第１、第２実施形態において、連通孔４２は、内側サイドウォール部１２ｂに形成してもよい。   In the first and second embodiments, the communication hole 42 may be formed in the inner sidewall portion 12b.

図５に示す第３実施形態では、リム１０は第１、第２実施形態のレッジ部１６を有さない。ディスク２０のフランジ部２２の延長部２２ｂは、中心軸方向内向きに向かって漸次径を増大させてテーパ状をなし、その内端縁部２２ｘが内側フランジ部１５ｂの軸方向内側の面に溶接されている。連通孔４２は内側のサイドウォール部１２ｂに形成されている。
この実施形態では、延長部２２ｂがビードシート部１４ｂを越えて延び、内端縁部２２ｘが内側フランジ部１５ｂに溶接されるため、リム１０にレッジ部１６が無くても、副気室４１の容積を十分に確保することができる。 In the third embodiment shown in FIG. 5, the rim 10 does not have the ledge portion 16 of the first and second embodiments. The extension portion 22b of the flange portion 22 of the disk 20 has a taper shape with the diameter gradually increasing inward in the central axial direction, and the inner end edge portion 22x is welded to the axially inner surface of the inner flange portion 15b. Has been. The communication hole 42 is formed in the inner sidewall portion 12b.
In this embodiment, the extension portion 22b extends beyond the bead seat portion 14b, and the inner end edge portion 22x is welded to the inner flange portion 15b. Therefore, even if the rim 10 does not have the ledge portion 16, the auxiliary air chamber 41 A sufficient volume can be secured.

本発明は、上記実施形態に制約されず、種々の態様を採用することができる。
上記実施形態では、径方向外向きに突出する凸部２２ｙにより複数の副気室を仕切ったが、リムおよびディスクと別体をなす仕切部材により仕切ってもよい。
上記実施形態では、上記副気室を仕切る凸部が直接にリム内周に当てられているが、シール材を介して間接的にリム内周に当てられていてもよい。 The present invention is not limited to the above embodiment, and various aspects can be adopted.
In the above embodiment, the plurality of auxiliary air chambers are partitioned by the convex portions 22y projecting outward in the radial direction, but may be partitioned by a partition member that is separate from the rim and the disk.
In the above-described embodiment, the convex portion that partitions the auxiliary air chamber is directly applied to the inner periphery of the rim, but may be applied indirectly to the inner periphery of the rim via a sealing material.

上記実施形態では、溶接部位３１が、ディスクのフランジ部の嵌入部とリムの最小径部の当接領域の端縁に設けられているが、当接領域の軸方向中間部に設けられていてもよい。
上記実施形態では、ディスクのフランジ部の延長部により副気室を形成したが、このフランジ部を設けず、ディスクの嵌入部とリムの最小径部との間に副気室を設けてもよい。この場合には、ディスクの嵌入部に径方向内方向に突出する突出部を形成する。
車両用ホイールはスチール製が好ましいが、アルミ合金やマグネシウム合金等であってもよい。
リムがウエル部を有さない車両用ホイールにあっては、リムにおいて両端部を除く領域が円筒形状の最小径部となり、この領域にディスクのフランジ部が嵌合される。 In the above-described embodiment, the welded portion 31 is provided at the edge of the contact region between the fitting portion of the disk flange portion and the smallest diameter portion of the rim, but is provided at the intermediate portion in the axial direction of the contact region. Also good.
In the above embodiment, the auxiliary air chamber is formed by the extension of the flange portion of the disc. However, the auxiliary air chamber may be provided between the insertion portion of the disc and the minimum diameter portion of the rim without providing this flange portion. . In this case, a protruding portion that protrudes inward in the radial direction is formed in the insertion portion of the disk.
The vehicle wheel is preferably made of steel, but may be an aluminum alloy, a magnesium alloy, or the like.
In a vehicle wheel in which the rim does not have a well portion, a region excluding both ends of the rim is a cylindrical minimum diameter portion, and a flange portion of the disc is fitted into this region.

本発明は、気柱共鳴を減衰する機能を有する２ピース型の車両用ホイールに適用することができる。   The present invention can be applied to a two-piece type vehicle wheel having a function of attenuating air column resonance.

２ 主気室（タイヤの内部空間）
１０ リム
１１ ウエル部（リム最小径部）
１２ａ，１２ｂ サイドウォール部
１３ａ，１３ｂ ハンプ部
１４ａ，１４ｂ ビードシート部
１５ａ，１５ｂ フランジ部
１６ レッジ部
２０ ディスク
２１ 円盤部
２２ フランジ部
２２ａ 嵌入部
２２ｂ 延長部
２２ｘ 内端縁部
２２ｙ 凸部
３１，３２ 溶接部位
４０ 共鳴器
４１ 副気室
４２ 連通孔 2 Main air chamber (inner tire space)
10 Rim 11 Well part (Rim minimum diameter part)
12a, 12b Side wall portion 13a, 13b Hump portion 14a, 14b Bead sheet portion 15a, 15b Flange portion 16 Ledge portion 20 Disc 21 Disc portion 22 Flange portion 22a Insertion portion 22b Extension portion 22x Inner edge portion 22y Protrusion portions 31, 32 Welded part 40 Resonator 41 Secondary air chamber 42 Communication hole

Claims (6)

タイヤが装着されるリムと、このリムと別体をなしてリムに固定されたディスクとを備えた２ピース型の車両用ホイールにおいて、
上記リムと上記ディスクの対向面が一部領域において互いに離間し、これら対向面によって画成された閉塞空間が副気室として提供され、
上記リムには、上記副気室を上記タイヤの内部空間からなる主気室に連通させる連通孔が形成され、
上記副気室と上記連通孔により、上記主気室での気柱共鳴を低減させる共鳴器が構成されることを特徴とする車両用ホイール。 In a two-piece type vehicle wheel comprising a rim to which a tire is mounted and a disc fixed to the rim separately from the rim,
The opposed surfaces of the rim and the disk are separated from each other in a partial region, and a closed space defined by the opposed surfaces is provided as a sub air chamber,
The rim is formed with a communication hole that communicates the auxiliary air chamber with a main air chamber that is an internal space of the tire.
A vehicle wheel characterized in that a resonator for reducing air column resonance in the main air chamber is constituted by the sub air chamber and the communication hole. 車両用ホイールを車両に装着した状態で車両用ホイールの中心軸に沿って車両を向く方向を中心軸方向内向きとし、車両と反対方向を中心軸方向外向きとした場合において、
上記ディスクは、略円盤形状をなす円盤部とこの円盤部の周縁から中心軸方向内向きに延びる略円筒形状のフランジ部を有し、
上記ディスクのフランジ部の少なくとも一部が、上記リムの最小径部に嵌入され、
上記ディスクのフランジ部と上記リムの対向面間に、上記副気室が形成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。 In the state where the vehicle wheel is mounted on the vehicle, the direction facing the vehicle along the central axis of the vehicle wheel is the center axis direction inward, and the opposite direction to the vehicle is the center axis direction outward.
The disk has a substantially disk-shaped disk part and a substantially cylindrical flange part extending inwardly in the central axis direction from the periphery of the disk part,
At least a part of the flange portion of the disk is inserted into the minimum diameter portion of the rim,
The vehicle wheel according to claim 1, wherein the auxiliary air chamber is formed between a flange portion of the disk and a facing surface of the rim. 上記ディスクのフランジ部が、上記リム最小径部に嵌入される嵌入部と、この嵌入部から中心軸方向内向きに延びる延長部を有し、
上記リムにおいて上記リム最小径部より中心軸方向内向きに位置する内側部位と、上記ディスクの延長部との間に、上記副気室が形成さ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 flange portion of the disk has an insertion portion that is inserted into the rim minimum diameter portion, and an extension portion that extends inward in the central axis direction from the insertion portion,
The auxiliary air chamber is formed between an inner portion of the rim that is located inward in the central axis direction from the rim minimum diameter portion and an extension of the disc. Vehicle wheels. 上記延長部の内端縁部が上記リムの上記内側部位に全周にわたって溶接され、上記嵌入部が上記リム最小径部に全周にわたって溶接されることにより、上記副気室が外部から遮断されていることを特徴とする請求項３に記載の車両用ホイール。   The inner end edge portion of the extension portion is welded to the inner portion of the rim over the entire circumference, and the fitting portion is welded to the rim minimum diameter portion over the entire circumference, thereby blocking the auxiliary air chamber from the outside. The vehicle wheel according to claim 3, wherein the vehicle wheel is provided. 上記延長部の内端縁部が径方向外向きに立ち上がっており、その外周縁が上記リムの上記内側部位に溶接されていることを特徴とする請求項４に記載の車両用ホイール。   The vehicle wheel according to claim 4, wherein an inner end edge portion of the extension portion rises radially outward, and an outer peripheral edge thereof is welded to the inner portion of the rim. 上記ディスクのフランジ部の延長部には周方向に等間隔をおいて径方向外向きに突出する凸部が形成され、この凸部が上記リムの内周に当たることにより、上記副気室が互いに独立して周方向に複数配置されていることを特徴とする請求項３〜５のいずれかに記載の車両用ホイール。   The extension of the flange portion of the disk is formed with a convex portion projecting radially outward at equal intervals in the circumferential direction, and when the convex portion hits the inner circumference of the rim, the auxiliary air chambers are mutually connected. The vehicle wheel according to claim 3, wherein a plurality of wheels are independently arranged in the circumferential direction.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61118803U (en) * 1985-01-14 1986-07-26
JPS63258201A (en) * 1987-04-14 1988-10-25 Asahi Malleable Iron Co Ltd Wheel for vehicle
JPH01115701A (en) * 1987-10-29 1989-05-09 Bridgestone Corp Low noise tyre wheel
JPH06344703A (en) * 1993-06-02 1994-12-20 Toyota Motor Corp Vibration damping wheel structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61118803U (en) * 1985-01-14 1986-07-26
JPS63258201A (en) * 1987-04-14 1988-10-25 Asahi Malleable Iron Co Ltd Wheel for vehicle
JPH01115701A (en) * 1987-10-29 1989-05-09 Bridgestone Corp Low noise tyre wheel
JPH06344703A (en) * 1993-06-02 1994-12-20 Toyota Motor Corp Vibration damping wheel structure

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