JP6967103B2

JP6967103B2 - Spoke wheels and wheels

Info

Publication number: JP6967103B2
Application number: JP2020042991A
Authority: JP
Inventors: 恵岡田; 啓太八木; 茉文安原; 竜也石川
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2021-11-17
Anticipated expiration: 2040-03-12
Also published as: JP2021142886A

Description

本発明は、スポークホイール及び車輪に関する。 The present invention relates to spoke wheels and wheels.

従来、タイヤを支持するリムと、車軸を支持するハブと、リムとハブとを接続する複数のスポークと、を備えたスポークホイールが知られている。リムは、スポークを接続するためのニップルを通す貫通孔を有する。例えば、特許文献１，２では、チューブレス型のスポークホイールを開示している。ニップルと貫通孔との間には、スリーブ状の環状封止部材が設けられている。環状封止部材は、ニップル上に予めはめられ、ニップルと対応する貫通孔にひっかかりながらはまる。リムのまわりには、ニップルを覆うように円周方向に延びる帯状シール部材がはめられている。 Conventionally, spoke wheels including a rim that supports a tire, a hub that supports an axle, and a plurality of spokes that connect the rim and the hub are known. The rim has through holes through which the nipples for connecting the spokes pass. For example, Patent Documents 1 and 2 disclose tubeless spoke wheels. A sleeve-shaped annular sealing member is provided between the nipple and the through hole. The annular sealing member is pre-fitted onto the nipple and is hooked into the through hole corresponding to the nipple. Around the rim, a band-shaped sealing member extending in the circumferential direction is fitted so as to cover the nipple.

特許第５６３１８９４号公報Japanese Patent No. 5631894 特表２０１２−５１５１１５号公報Special Table 2012-515115 Gazette

しかし、環状封止部材がリムの貫通孔にひっかかりながらはまるため、ニップルの調整角度が微小となり、リムにスポークを取り付けることが難しくなる可能性が高い。 However, since the annular sealing member is caught and fitted in the through hole of the rim, the adjustment angle of the nipple becomes small, and it is highly possible that it becomes difficult to attach the spokes to the rim.

そこで本発明は、リムにスポークを簡単に取り付けることを目的とする。 Therefore, it is an object of the present invention to easily attach the spokes to the rim.

上記課題の解決手段として、本発明の態様は以下の構成を有する。
（１）本発明の態様に係るスポークホイールは、タイヤ（２）を支持するリム（３）と、車軸（４）を支持するハブ（５）と、前記リム（３）と前記ハブ（５）とを接続する複数のスポーク（６）と、を備え、前記リム（３）は、前記スポーク（６）を接続するためのニップル（３０）を通す貫通孔（１０）を有し、前記貫通孔（１０）に配置され、前記リム（３）と前記ニップル（３０）との間に挟持されたシール部材（４０）を更に備え、前記ニップル（３０）の軸心（Ｃ１）を含む断面視で、前記シール部材（４０）は、前記軸心（Ｃ１）と平行な方向に開放した断面である。 As a means for solving the above problems, the aspect of the present invention has the following configuration.
(1) The spoke wheel according to the aspect of the present invention includes a rim (3) that supports the tire (2), a hub (5) that supports the axle (4), the rim (3), and the hub (5). The rim (3) has a through hole (10) through which a nipple (30) for connecting the spoke (6) is provided, and includes a plurality of spokes (6) for connecting the spokes (6). A seal member (40) arranged in (10) and sandwiched between the rim (3) and the spoke (30) is further provided, and in a cross-sectional view including the axis (C1) of the spoke (30). The seal member (40) has a cross section opened in a direction parallel to the axis (C1).

（２）上記（１）に記載のスポークホイールでは、前記タイヤ（２）は、チューブレスタイヤ（２）であり、前記貫通孔（１０）は、前記チューブレスタイヤ（２）との間で空気圧を保持するエア空間（７）と外部空間（８）とに開口し、前記軸心（Ｃ１）を含む断面視で、前記シール部材（４０）は、前記エア空間（７）の側に開放した断面であってもよい。 (2) In the spoke wheel according to (1) above, the tire (2) is a tubeless tire (2), and the through hole (10) holds air pressure between the tire (2) and the tubeless tire (2). The seal member (40) has a cross section opened to the side of the air space (7) in a cross-sectional view including the axial center (C1) opened in the air space (7) and the external space (8). There may be.

（３）上記（１）または（２）に記載のスポークホイールでは、前記軸心（Ｃ１）を含む断面視で、前記シール部材（４０）は、Ｕ字状を有し、前記シール部材（４０）の外側部（４３）の厚み（Ｗ１，Ｗ３、Ｗ５）は、前記シール部材（４０）の内側部（４２）の厚み（Ｗ２，Ｗ４，Ｗ６）よりも小さくてもよい。 (3) In the spoke wheel according to (1) or (2) above, the seal member (40) has a U-shape in a cross-sectional view including the axis (C1), and the seal member (40) has a U-shape. The thickness (W1, W3, W5) of the outer portion (43) of the seal member (40) may be smaller than the thickness (W2, W4, W6) of the inner portion (42) of the seal member (40).

（４）上記（１）から（３）のいずれか一項に記載のスポークホイールでは、前記軸心（Ｃ１）を含む断面視で、前記シール部材（４０）は、Ｕ字状を有し、前記軸心（Ｃ１）と平行な方向において、前記シール部材（４０）の外側部（４３）の高さ（Ｈ１，Ｈ３，Ｈ５）は、前記シール部材（４０）の内側部（４２）の高さ（Ｈ２，Ｈ４，Ｈ６）よりも小さくてもよい。 (4) In the spoke wheel according to any one of (1) to (3) above, the seal member (40) has a U-shape in a cross-sectional view including the axis (C1). In the direction parallel to the axis (C1), the height (H1, H3, H5) of the outer portion (43) of the seal member (40) is the height of the inner portion (42) of the seal member (40). It may be smaller than (H2, H4, H6).

（５）上記（１）から（４）のいずれか一項に記載のスポークホイールでは、前記ニップル（３０）の外周には、凹部（３６）が形成され、前記シール部材（４０）は、前記凹部（３６）に配置されていてもよい。 (5) In the spoke wheel according to any one of (1) to (4) above, a recess (36) is formed on the outer periphery of the nipple (30), and the seal member (40) is the same. It may be arranged in the recess (36).

（６）上記（１）から（５）のいずれか一項に記載のスポークホイールでは、前記タイヤ（２）は、チューブレスタイヤ（２）であり、前記貫通孔（１０）は、前記チューブレスタイヤ（２）との間で空気圧を保持するエア空間（７）と外部空間（８）とに開口し、前記軸心（Ｃ１）を含む断面視で、前記シール部材（４０）は、前記リム（３）の中央（Ｍ１）に対して前記エア空間（７）の側に配置されていてもよい。 (6) In the spoke wheel according to any one of (1) to (5) above, the tire (2) is a tubeless tire (2), and the through hole (10) is the tubeless tire ( The seal member (40) is the rim (3) in a cross-sectional view including the axis (C1) opened in the air space (7) and the external space (8) that hold the air pressure between the two). ) May be arranged on the side of the air space (7) with respect to the center (M1).

（７）上記（１）から（６）のいずれか一項に記載のスポークホイールでは、前記ニップル（３０）は、六角形状に隆起する頭部（３２）を備えていてもよい。 (7) In the spoke wheel according to any one of (1) to (6) above, the nipple (30) may include a head (32) raised in a hexagonal shape.

（８）本発明の態様に係る車輪は、チューブレスタイヤ（２）と、前記チューブレスタイヤ（２）を支持するリム（３）と、車軸（４）を支持するハブ（５）と、前記リム（３）と前記ハブ（５）とを接続する複数のスポーク（６）と、を備え、前記リム（３）は、前記スポーク（６）を接続するためのニップル（３０）を通す貫通孔（１０）を有し、前記貫通孔（１０）は、前記チューブレスタイヤ（２）との間で空気圧を保持するエア空間（７）と外部空間（８）に開口し、前記貫通孔（１０）に配置され、前記リム（３）と前記ニップル（３０）との間に挟持されたシール部材（４０）を更に備え、前記ニップル（３０）の軸心を含む断面視で、前記シール部材（４０）は、前記軸心（Ｃ１）と平行な方向に開放した断面である。 (8) The wheels according to the embodiment of the present invention include a tubeless tire (2), a rim (3) that supports the tubeless tire (2), a hub (5) that supports the axle (4), and the rim (8). A plurality of spokes (6) connecting the hub (5) and the hub (5) are provided, and the rim (3) is a through hole (10) through which a nipple (30) for connecting the spokes (6) is passed. ), And the through hole (10) is opened in the air space (7) and the external space (8) for holding the air pressure between the tubeless tire (2) and arranged in the through hole (10). The seal member (40) is further provided with a seal member (40) sandwiched between the rim (3) and the nipple (30), and the seal member (40) is viewed in cross-sectional view including the axis of the nipple (30). , A cross section opened in a direction parallel to the axis (C1).

本発明の上記（１）に記載のスポークホイールによれば、ニップルの軸心を含む断面視で、シール部材は、軸心と平行な方向に開放した断面であることで、以下の効果を奏する。
リムにニップルを取り付けるとき、シール部材の断面が変形しながらリムの貫通孔に挿入されるため、リムの貫通孔にニップルが入りやすい。したがって、リムにスポークを簡単に取り付けることができる。加えて、シール部材の断面形状を変形できるため、ニップルの指向方向を調整しやすいので、ニップルを介してリムにスポークを簡単に取り付けることができる。 According to the spoke wheel according to the above (1) of the present invention, the seal member has the following effect when the seal member has a cross section opened in a direction parallel to the axis in a cross-sectional view including the axis of the nipple. ..
When attaching the nipple to the rim, the cross section of the sealing member is deformed and inserted into the through hole of the rim, so that the nipple easily enters the through hole of the rim. Therefore, the spokes can be easily attached to the rim. In addition, since the cross-sectional shape of the seal member can be deformed, the directivity direction of the nipple can be easily adjusted, so that the spokes can be easily attached to the rim via the nipple.

本発明の上記（２）に記載のスポークホイールによれば、タイヤは、チューブレスタイヤであり、貫通孔は、チューブレスタイヤとの間で空気圧を保持するエア空間と外部空間とに開口し、軸心を含む断面視で、シール部材は、エア空間の側に開放した断面であることで、以下の効果を奏する。
空気がエア空間側から外部空間側に流れるため、シール部材が軸心と垂直な方向に展開しやすく、シール部材の密着により貫通孔の開口部を塞ぎやすい。そのため、気密性が向上し、タイヤ内の空気がニップルから漏れることを抑制することができる。加えて、空気漏れを抑制するためにリムの周方向に延びる帯状シール部材を設ける必要がないため、部品点数を削減し、コスト低減に寄与する。 According to the spoke wheel according to the above (2) of the present invention, the tire is a tubeless tire, and the through hole is opened between the tubeless tire and the air space for holding the air pressure and the external space, and the axial center thereof. In the cross-sectional view including, the seal member has the following effect by having a cross section open to the side of the air space.
Since the air flows from the air space side to the external space side, the sealing member is likely to expand in the direction perpendicular to the axis, and the sealing member is in close contact with the opening of the through hole. Therefore, the airtightness is improved, and it is possible to prevent the air in the tire from leaking from the nipple. In addition, since it is not necessary to provide a band-shaped seal member extending in the circumferential direction of the rim in order to suppress air leakage, the number of parts can be reduced and the cost can be reduced.

本発明の上記（３）に記載のスポークホイールによれば、軸心を含む断面視で、シール部材は、Ｕ字状を有し、シール部材の外側部の厚みは、シール部材の内側部の厚みよりも小さいことで、以下の効果を奏する。
シール部材の外側部（シール部材のうち軸心に対して遠い部位）の剛性がシール部材の内側部の剛性よりも小さくなるため、シール部材の外側部が軸心と垂直な方向に展開しやすく、シール部材の密着により貫通孔の開口部を塞ぎやすい。そのため、気密性が向上する。加えて、空気漏れを抑制するためにリムの周方向に延びる帯状シール部材を設ける必要がないため、部品点数を削減し、コスト低減に寄与する。 According to the spoke wheel according to the above (3) of the present invention, the seal member has a U-shape in a cross-sectional view including the axis, and the thickness of the outer portion of the seal member is the inner portion of the seal member. By being smaller than the thickness, the following effects are obtained.
Since the rigidity of the outer part of the seal member (the part of the seal member far from the axis) is smaller than the rigidity of the inner part of the seal member, the outer part of the seal member can be easily deployed in the direction perpendicular to the axis. , It is easy to close the opening of the through hole due to the close contact of the seal member. Therefore, the airtightness is improved. In addition, since it is not necessary to provide a band-shaped seal member extending in the circumferential direction of the rim in order to suppress air leakage, the number of parts can be reduced and the cost can be reduced.

本発明の上記（４）に記載のスポークホイールによれば、軸心を含む断面視で、シール部材は、Ｕ字状を有し、軸心と平行な方向において、シール部材の外側部の高さは、シール部材の内側部の高さよりも小さいことで、以下の効果を奏する。
シール部材の外側部（シール部材のうち軸心に対して遠い部位）の剛性がシール部材の内側部の剛性よりも小さくなるため、シール部材の外側部が軸心と垂直な方向に展開しやすく、シール部材の密着により貫通孔の開口部を塞ぎやすい。そのため、気密性が向上する。加えて、空気漏れを抑制するためにリムの周方向に延びる帯状シール部材を設ける必要がないため、部品点数を削減し、コスト低減に寄与する。 According to the spoke wheel according to the above (4) of the present invention, the seal member has a U-shape in a cross-sectional view including the axis, and the height of the outer portion of the seal member in the direction parallel to the axis. The spokes are smaller than the height of the inner part of the seal member, so that the following effects are obtained.
Since the rigidity of the outer part of the seal member (the part of the seal member far from the axis) is smaller than the rigidity of the inner part of the seal member, the outer part of the seal member can be easily deployed in the direction perpendicular to the axis. , It is easy to close the opening of the through hole due to the close contact of the seal member. Therefore, the airtightness is improved. In addition, since it is not necessary to provide a band-shaped seal member extending in the circumferential direction of the rim in order to suppress air leakage, the number of parts can be reduced and the cost can be reduced.

本発明の上記（５）に記載のスポークホイールによれば、ニップルの外周には、凹部が形成され、シール部材は、凹部に配置されていることで、以下の効果を奏する。
ニップルの外周の凹部とシール部材の断面形状とが相俟ってラビリンス構造となるため、気密性が向上する。加えて、空気漏れを抑制するためにリムの周方向に延びる帯状シール部材を設ける必要がないため、部品点数を削減し、コスト低減に寄与する。 According to the spoke wheel according to the above (5) of the present invention, a concave portion is formed on the outer periphery of the nipple, and the sealing member is arranged in the concave portion, thereby achieving the following effects.
The concave portion on the outer periphery of the nipple and the cross-sectional shape of the seal member combine to form a labyrinth structure, which improves airtightness. In addition, since it is not necessary to provide a band-shaped seal member extending in the circumferential direction of the rim in order to suppress air leakage, the number of parts can be reduced and the cost can be reduced.

本発明の上記（６）に記載のスポークホイールによれば、タイヤは、チューブレスタイヤであり、貫通孔は、チューブレスタイヤとの間で空気圧を保持するエア空間と外部空間とに開口し、軸心を含む断面視で、シール部材は、リムの中央に対してエア空間の側に配置されていることで、以下の効果を奏する。
シール部材がリムの中央に対して外部空間の側に配置されている場合と比較して、シール部材が外部空間に飛び出しにくい。そのため、気密性が向上し、タイヤ内の空気がニップルから漏れることを抑制することができる。加えて、空気漏れを抑制するためにリムの周方向に延びる帯状シール部材を設ける必要がないため、部品点数を削減し、コスト低減に寄与する。 According to the spoke wheel according to the above (6) of the present invention, the tire is a tubeless tire, and the through hole is opened between the air space holding the air pressure and the external space between the tubeless tire and the axial center. In the cross-sectional view including, the sealing member is arranged on the side of the air space with respect to the center of the rim, and thus has the following effects.
Compared with the case where the sealing member is arranged on the side of the external space with respect to the center of the rim, the sealing member is less likely to pop out into the external space. Therefore, the airtightness is improved, and it is possible to prevent the air in the tire from leaking from the nipple. In addition, since it is not necessary to provide a band-shaped seal member extending in the circumferential direction of the rim in order to suppress air leakage, the number of parts can be reduced and the cost can be reduced.

本発明の上記（７）に記載のスポークホイールによれば、ニップルは、六角形状に隆起する頭部を備えることで、以下の効果を奏する。
ニップルの頭部内に凹部が形成されている場合と比較して、ニップルの締め付けを強固にすることができるため、気密性が向上する。加えて、外部空間へのニップルの露出部位を小さくすることができるため、美観性が向上する。 According to the spoke wheel according to the above (7) of the present invention, the nipple has the following effects by providing a head that is raised in a hexagonal shape.
As compared with the case where the recess is formed in the head of the nipple, the tightening of the nipple can be strengthened, so that the airtightness is improved. In addition, the exposed portion of the nipple to the external space can be reduced, so that the aesthetic appearance is improved.

本発明の上記（８）に記載の車輪によれば、ニップルの軸心を含む断面視で、シール部材は、軸心と平行な方向に開放した断面であることで、以下の効果を奏する。
リムにニップルを取り付けるとき、シール部材の断面が変形しながらリムの貫通孔に挿入されるため、リムの貫通孔にニップルが入りやすい。したがって、リムにスポークを簡単に取り付けることができる。加えて、シール部材の断面形状を変形できるため、ニップルの指向方向を調整しやすいので、ニップルを介してリムにスポークを簡単に取り付けることができる。
加えて、チューブレスタイヤを備え、貫通孔は、チューブレスタイヤとの間で空気圧を保持するエア空間と外部空間とに開口していることで、以下の効果を奏する。
空気漏れを抑制するためにリムの周方向に延びる帯状シール部材を設ける必要がないため、部品点数を削減し、コスト低減に寄与する。 According to the wheel according to the above (8) of the present invention, the seal member has the following effect when the seal member has a cross section opened in a direction parallel to the axis in a cross-sectional view including the axis of the nipple.
When attaching the nipple to the rim, the cross section of the sealing member is deformed and inserted into the through hole of the rim, so that the nipple easily enters the through hole of the rim. Therefore, the spokes can be easily attached to the rim. In addition, since the cross-sectional shape of the seal member can be deformed, the directivity direction of the nipple can be easily adjusted, so that the spokes can be easily attached to the rim via the nipple.
In addition, the tubeless tire is provided, and the through hole is open to the air space for holding the air pressure and the external space between the tubeless tire and the tubeless tire, so that the following effects can be obtained.
Since it is not necessary to provide a band-shaped seal member extending in the circumferential direction of the rim in order to suppress air leakage, the number of parts can be reduced and the cost can be reduced.

実施形態に係るスポークホイールの斜視図である。It is a perspective view of the spoke wheel which concerns on embodiment. 上記スポークホイールを車軸の軸方向から見た図である。It is the figure which looked at the spoke wheel from the axial direction of an axle. 図２のＩＩＩ−ＩＩＩ断面を含む図である。It is a figure which includes the III-III cross section of FIG. 図３のＩＶで示す部位の拡大図である。It is an enlarged view of the part shown by IV of FIG. 実施形態に係るニップルの斜視図である。It is a perspective view of the nipple which concerns on embodiment. 上記ニップルの側面図である。It is a side view of the said nipple. 実施形態に係るシール部材の平面図である。It is a top view of the seal member which concerns on embodiment. 図７のＶＩＩＩ−ＶＩＩＩ断面図である。FIG. 7 is a cross-sectional view taken along the line VIII-VIII of FIG. 上記ニップルの調整角度の説明図である。It is explanatory drawing of the adjustment angle of the said nipple. 図４のＸで示す部位の拡大図である。It is an enlarged view of the part shown by X of FIG. 実施形態の第一変形例に係るシール部材の図８に相当する断面図である。It is sectional drawing corresponding to FIG. 8 of the seal member which concerns on the 1st modification of embodiment. 実施形態の第二変形例に係るシール部材の図８に相当する断面図である。It is sectional drawing corresponding to FIG. 8 of the seal member which concerns on the 2nd modification of embodiment.

以下、本発明の実施形態について図面を参照して説明する。以下の説明では、鞍乗り型車両の一例である自動二輪車に用いられるチューブレス型のスポークホイールを挙げて説明する。以下の説明に用いる図中適所には、本実施形態のスポークホイールを備えた自動二輪車の車両前方を示す矢印ＦＲ、車両左方を示す矢印ＬＨ、車両上方を示す矢印ＵＰが示される。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, a tubeless spoke wheel used in a motorcycle, which is an example of a saddle-riding vehicle, will be described. An arrow FR indicating the front of the motorcycle, an arrow LH indicating the left side of the vehicle, and an arrow UP indicating the upper part of the vehicle are shown at appropriate locations in the figure used in the following description.

＜スポークホイール＞
図１に示すように、スポークホイール１は、チューブレスタイヤ２（タイヤ、図３参照）を支持するリム３と、車軸４を支持するハブ５と、リム３とハブ５とを接続する複数のスポーク６と、を備える。以下、車軸４と平行な方向を単に「軸方向」、車軸４と直交する方向を単に「径方向」、車軸４の周りの方向を単に「周方向」ともいう。 <Spoke wheel>
As shown in FIG. 1, the spoke wheel 1 has a rim 3 that supports a tubeless tire 2 (tire, see FIG. 3), a hub 5 that supports an axle 4, and a plurality of spokes that connect the rim 3 and the hub 5. 6 and. Hereinafter, the direction parallel to the axle 4 is simply referred to as "axial direction", the direction orthogonal to the axle 4 is simply referred to as "diametrical direction", and the direction around the axle 4 is simply referred to as "circumferential direction".

＜リム＞
図２に示すように、軸方向から見て、リム３は、円環状を有する。図３に示すように、リム３は、径方向内側に凹む断面形状を有する。リム３は、スポーク６を接続するためのニップル３０を通す貫通孔１０を有する。リム３とチューブレスタイヤ２との間には、空気圧を保持するエア空間７が形成されている。 <Rim>
As shown in FIG. 2, the rim 3 has an annular shape when viewed from the axial direction. As shown in FIG. 3, the rim 3 has a cross-sectional shape recessed inward in the radial direction. The rim 3 has a through hole 10 through which the nipple 30 for connecting the spokes 6 is passed. An air space 7 for holding air pressure is formed between the rim 3 and the tubeless tire 2.

リム３は、貫通孔１０を有する底壁部１１と、一対の側壁部１２と、底壁部１１と側壁部１２とを連結する一対の肩壁部１３と、を備える。例えば、底壁部１１、側壁部１２及び肩壁部１３は、同一の部材で一体に形成されている。 The rim 3 includes a bottom wall portion 11 having a through hole 10, a pair of side wall portions 12, and a pair of shoulder wall portions 13 connecting the bottom wall portion 11 and the side wall portion 12. For example, the bottom wall portion 11, the side wall portion 12, and the shoulder wall portion 13 are integrally formed of the same member.

図３の断面視で、底壁部１１は、軸方向に延びている。底壁部１１の軸方向中央は、ハブ５に向かって張り出す張出し部１１ａを有する。張出し部１１ａは、径方向内側に窪む窪み部１１ｂを有する。窪み部１１ｂは、底壁部１１の軸方向中央に配置されている。貫通孔１０は、張出し部１１ａに形成されている。貫通孔１０は、径方向に対して斜めに交差する方向に延びている。貫通孔１０は、エア空間７と外部空間８とに開口している。 In the cross-sectional view of FIG. 3, the bottom wall portion 11 extends in the axial direction. The axial center of the bottom wall portion 11 has an overhanging portion 11a that projects toward the hub 5. The overhanging portion 11a has a recessed portion 11b that is recessed inward in the radial direction. The recessed portion 11b is arranged at the center of the bottom wall portion 11 in the axial direction. The through hole 10 is formed in the overhanging portion 11a. The through hole 10 extends in a direction diagonally intersecting the radial direction. The through hole 10 is open to the air space 7 and the external space 8.

図３の断面視で、肩壁部１３は、底壁部１１の軸方向外端から径方向外方に延びる起立部１３ａと、起立部１３ａの径方向外端から軸方向外側に向けて延びる直線部１３ｂと、を備える。この構成によれば、起立部１３ａが底壁部１１の軸方向外端から径方向外方に向かうに従って軸方向外側に位置するように傾斜して延びる場合と比較して、底壁部１１の領域Ｂ１を広くできるため、ニップル３０の取り付けが簡単になる。 In the cross-sectional view of FIG. 3, the shoulder wall portion 13 extends radially outward from the axially outer end of the bottom wall portion 11 and the upright portion 13a extending radially outward from the radial outer end of the standing portion 13a. A straight line portion 13b and the like are provided. According to this configuration, as compared with the case where the upright portion 13a is inclined and extends so as to be positioned outward in the axial direction from the outer end in the axial direction of the bottom wall portion 11 toward the outward direction in the radial direction, the bottom wall portion 11 Since the area B1 can be widened, the nipple 30 can be easily attached.

図３の断面視で、側壁部１２は、肩壁部１３の軸方向外端から径方向外側に向かって起立している。側壁部１２の径方向外側部は、軸方向外側に向かって傾斜している。 In the cross-sectional view of FIG. 3, the side wall portion 12 stands up from the axially outer end of the shoulder wall portion 13 toward the radial outer side. The radial outer portion of the side wall portion 12 is inclined toward the axial outer side.

＜ハブ＞
ハブ５は、車軸４を支持する筒部２０と、筒部２０の軸方向外端部に連結された一対のフランジ部２１と、を備える。
筒部２０は、車軸４と同軸の筒状を有する。車軸４は、ベアリング２２を介して筒部２０に支持されている。
図２に示すように、フランジ部２１は、円環状を有する。フランジ部２１は、リム３の内径よりも小さい外径を有する。 <Hub>
The hub 5 includes a tubular portion 20 that supports the axle 4 and a pair of flange portions 21 that are connected to the axially outer end portion of the tubular portion 20.
The tubular portion 20 has a tubular shape coaxial with the axle 4. The axle 4 is supported by the cylinder portion 20 via a bearing 22.
As shown in FIG. 2, the flange portion 21 has an annular shape. The flange portion 21 has an outer diameter smaller than the inner diameter of the rim 3.

＜スポーク＞
スポーク６は、リム３とハブ５との間に配置されている。スポーク６は、径方向に対して斜めに交差する方向に延びている。スポーク６の内側の端部は、ハブ５のフランジ部２１に接続されている。スポーク６の外側の端部は、ニップル３０を介してリム３の底壁部１１に接続されている。 <Spokes>
The spokes 6 are arranged between the rim 3 and the hub 5. The spokes 6 extend in a direction diagonally intersecting the radial direction. The inner end of the spoke 6 is connected to the flange portion 21 of the hub 5. The outer end of the spoke 6 is connected to the bottom wall portion 11 of the rim 3 via the nipple 30.

＜ニップル＞
図６に示すように、ニップル３０は、管状の柄部３１と、柄部３１の一端に連結された頭部３２と、頭部３２を受ける座部３３と、柄部３１よりも外径が大きい第一拡径部３４及び第二拡径部３５と、を備える。例えば、柄部３１、頭部３２、座部３３、第一拡径部３４及び第二拡径部３５は、同一の部材で一体に形成されている。 <Nipple>
As shown in FIG. 6, the nipple 30 has a tubular handle portion 31, a head portion 32 connected to one end of the handle portion 31, a seat portion 33 that receives the head portion 32, and an outer diameter larger than that of the handle portion 31. A large first diameter-expanded portion 34 and a second diameter-expanded portion 35 are provided. For example, the handle portion 31, the head portion 32, the seat portion 33, the first diameter expansion portion 34, and the second diameter expansion portion 35 are integrally formed of the same member.

図４は、ニップル３０の軸心Ｃ１を含む断面視である。図４に示すように、柄部３１内には、ニップル３０の軸心Ｃ１に沿って延びる穴部３１ａが形成されている。穴部３１ａは、柄部３１の全体にわたって形成されている。穴部３１ａは、頭部３２内に最深部３１ｃを有する。穴部３１ａには、ニップル３０に対応するスポーク６を接続するためのネジ部３１ｂが設けられている。 FIG. 4 is a cross-sectional view including the axis C1 of the nipple 30. As shown in FIG. 4, a hole portion 31a extending along the axis C1 of the nipple 30 is formed in the handle portion 31. The hole portion 31a is formed over the entire handle portion 31. The hole portion 31a has the deepest portion 31c in the head portion 32. The hole 31a is provided with a screw portion 31b for connecting the spoke 6 corresponding to the nipple 30.

頭部３２は、座部３３からエア空間７に向かって突出している。頭部３２は、ニップル３０の軸心Ｃ１と同軸に配置されている。頭部３２は、六角形状に隆起している（図５参照）。すなわち、頭部３２は、ニップル３０の軸心Ｃ１と同軸の六角柱状をなしている。本実施形態において、頭部３２には、工具等との係合のための凹部は設けられていない。 The head 32 projects from the seat 33 toward the air space 7. The head 32 is arranged coaxially with the axis C1 of the nipple 30. The head 32 is raised in a hexagonal shape (see FIG. 5). That is, the head 32 has a hexagonal columnar shape coaxial with the axis C1 of the nipple 30. In the present embodiment, the head 32 is not provided with a recess for engaging with a tool or the like.

座部３３は、頭部３２と第一拡径部３４との間に配置されている。座部３３は、ニップル３０の軸心Ｃ１と同軸に配置されている。ニップル３０の軸心Ｃ１に沿う方向において、座部３３は、第一拡径部３４から頭部３２に向かうに従って徐々に拡径している。座部３３は、頭部３２寄りの部位で最外径を有する。座部３３の最外径は、頭部３２の外径よりも大きい。 The seat portion 33 is arranged between the head portion 32 and the first diameter expansion portion 34. The seat portion 33 is arranged coaxially with the axis C1 of the nipple 30. In the direction along the axis C1 of the nipple 30, the seat portion 33 gradually expands in diameter from the first diameter-expanded portion 34 toward the head portion 32. The seat portion 33 has an outermost diameter at a portion closer to the head portion 32. The outermost diameter of the seat portion 33 is larger than the outer diameter of the head portion 32.

第一拡径部３４及び第二拡径部３５は、それぞれニップル３０の軸心Ｃ１と同軸に配置されている。第一拡径部３４及び第二拡径部３５は、互いに略同じ外径を有する。第一拡径部３４及び第二拡径部３５は、それぞれ貫通孔１０の内径よりも小さい外径を有する。第一拡径部３４は、座部３３と第二拡径部３５との間に配置されている。ニップル３０の軸心Ｃ１に沿う方向において、第一拡径部３４の長さは、第二拡径部３５の長さよりも小さい。ニップル３０の軸心Ｃ１に沿う方向において、第一拡径部３４は、第二拡径部３５と間隔をあけて配置されている。すなわち、ニップル３０は、第一拡径部３４と第二拡径部３５との間に凹部３６を有する。 The first diameter-expanded portion 34 and the second diameter-expanded portion 35 are respectively arranged coaxially with the axis C1 of the nipple 30. The first diameter-expanded portion 34 and the second diameter-expanded portion 35 have substantially the same outer diameter. The first diameter-expanded portion 34 and the second diameter-expanded portion 35 each have an outer diameter smaller than the inner diameter of the through hole 10. The first diameter-expanded portion 34 is arranged between the seat portion 33 and the second diameter-expanded portion 35. The length of the first diameter-expanded portion 34 is smaller than the length of the second diameter-expanded portion 35 in the direction along the axis C1 of the nipple 30. The first diameter-expanded portion 34 is arranged at a distance from the second diameter-expanded portion 35 in the direction along the axial center C1 of the nipple 30. That is, the nipple 30 has a recess 36 between the first diameter-expanded portion 34 and the second diameter-expanded portion 35.

凹部３６は、ニップル３０の外周に形成されている。凹部３６は、ニップル３０の軸心Ｃ１と同軸の環状を有する。凹部３６は、ニップル３０の外周全体にわたって一様に延びている。凹部３６は、柄部３１においてエア空間７寄りの部位に１つ設けられている。 The recess 36 is formed on the outer periphery of the nipple 30. The recess 36 has an annular shape coaxial with the axis C1 of the nipple 30. The recess 36 extends uniformly over the entire outer circumference of the nipple 30. One recess 36 is provided in the handle portion 31 near the air space 7.

＜ワッシャ＞
リム３の底壁部１１とニップル３０の座部３３との間には、ワッシャ３９が設けられている。ワッシャ３９は、底壁部１１の窪み部１１ｂと座部３３の湾曲面とのそれぞれに沿うように湾曲した断面形状を有する。ワッシャ３９は、座部３３の最外径と略同じ外径の環状を有する。ワッシャ３９の内径は、貫通孔１０の内径と略同じである。 <Washer>
A washer 39 is provided between the bottom wall portion 11 of the rim 3 and the seat portion 33 of the nipple 30. The washer 39 has a cross-sectional shape curved along each of the recessed portion 11b of the bottom wall portion 11 and the curved surface of the seat portion 33. The washer 39 has an annular shape having substantially the same outer diameter as the outermost diameter of the seat portion 33. The inner diameter of the washer 39 is substantially the same as the inner diameter of the through hole 10.

＜シール部材＞
リム３の貫通孔１０には、シール部材４０が配置されている。例えば、シール部材４０は、ゴム等の弾性材料で形成されている。シール部材４０は、リム３の張出し部１１ａとニップル３０の柄部３１との間に挟まれている。シール部材４０は、ニップル３０の凹部３６に配置されている。シール部材４０は、ニップル３０の第一拡径部３４と第二拡径部３５との間に配置されている。 <Seal member>
A sealing member 40 is arranged in the through hole 10 of the rim 3. For example, the sealing member 40 is made of an elastic material such as rubber. The seal member 40 is sandwiched between the overhanging portion 11a of the rim 3 and the handle portion 31 of the nipple 30. The seal member 40 is arranged in the recess 36 of the nipple 30. The seal member 40 is arranged between the first diameter-expanded portion 34 and the second diameter-expanded portion 35 of the nipple 30.

シール部材４０は、リム３の中央Ｍ１に対してエア空間７の側に配置されている。ここで、リム３の中央Ｍ１は、貫通孔１０の開口方向においてリム３の張出し部１１ａの厚み中央を意味する。シール部材４０は、貫通孔１０内において外部空間８よりもエア空間７の近くに配置されている。 The seal member 40 is arranged on the side of the air space 7 with respect to the center M1 of the rim 3. Here, the center M1 of the rim 3 means the center of the thickness of the overhanging portion 11a of the rim 3 in the opening direction of the through hole 10. The seal member 40 is arranged in the through hole 10 closer to the air space 7 than to the external space 8.

シール部材４０は、ニップル３０の軸心Ｃ１と平行な方向に開放した断面である。また、シール部材４０の軸心は、ニップル３０の軸心Ｃ１と同じである。シール部材４０は、エア空間７の側に開放した断面である。図７に示すように、シール部材４０は、円環状を有する。シール部材４０は、自身の周方向に連続して開放する円環状の開放空間４１を有する。シール部材４０は、円環状の内側部４２と、開放空間４１を介して内側部４２よりも外側に配置された円環状の外側部４３と、内側部４２と外側部４３とを連結する円環状の連結部４４と、を備える。例えば、内側部４２、外側部４３及び連結部４４は、同一の部材で一体に形成されている。 The seal member 40 has a cross section opened in a direction parallel to the axis C1 of the nipple 30. Further, the axis of the seal member 40 is the same as the axis C1 of the nipple 30. The seal member 40 has a cross section opened to the side of the air space 7. As shown in FIG. 7, the seal member 40 has an annular shape. The seal member 40 has an annular open space 41 that continuously opens in its circumferential direction. The seal member 40 has an annular inner portion 42, an annular outer portion 43 arranged outside the inner portion 42 via an open space 41, and an annular portion connecting the inner portion 42 and the outer portion 43. 44. For example, the inner portion 42, the outer portion 43, and the connecting portion 44 are integrally formed of the same member.

図８に示すように、シール部材４０は、断面視でＶ字状（Ｕ字状）を有する。内側部４２は、ニップル３０の軸心Ｃ１と平行に延びている。外側部４３は、ニップル３０の軸心Ｃ１に対して斜めに交差する方向に延びている。外側部４３は、シール部材４０の開放端側（開放空間４１の開口側）に向かうに従って内側部４２との離反間隔が大きくなるように傾斜して延びている。図中において、符号Ｒ１，Ｒ２は内側部の端部に設けられたフィレット（角Ｒ）、符号Ｒ３は外側部４３の端部に設けられたフィレット（角Ｒ）をそれぞれ示す。 As shown in FIG. 8, the seal member 40 has a V-shape (U-shape) in a cross-sectional view. The inner portion 42 extends parallel to the axis C1 of the nipple 30. The outer portion 43 extends in a direction diagonally intersecting the axis C1 of the nipple 30. The outer portion 43 is inclined and extends so as to increase the separation interval from the inner portion 42 toward the open end side (open side of the open space 41) of the seal member 40. In the figure, reference numerals R1 and R2 indicate fillets (angles R) provided at the inner end, and reference numerals R3 indicate fillets (angles R) provided at the ends of the outer side 43.

内側部４２及び外側部４３は、それぞれが延びる方向において一様な厚みを有する（ただし、フィレット部分を除く）。内側部４２は、ニップル３０の軸心Ｃ１と平行な方向において一様な厚みを有する。外側部４３は、ニップル３０の軸心Ｃ１に対して斜めに交差する方向において一様な厚みを有する。外側部４３の厚みＷ１は、内側部４２の厚みＷ２よりも小さい（Ｗ１＜Ｗ２）。すなわち、外側部４３は、内側部４２よりも細い。 The inner portion 42 and the outer portion 43 each have a uniform thickness in the extending direction (except for the fillet portion). The inner portion 42 has a uniform thickness in a direction parallel to the axis C1 of the nipple 30. The outer portion 43 has a uniform thickness in a direction diagonally intersecting the axis C1 of the nipple 30. The thickness W1 of the outer portion 43 is smaller than the thickness W2 of the inner portion 42 (W1 <W2). That is, the outer portion 43 is thinner than the inner portion 42.

ニップル３０の軸心Ｃ１と平行な方向において、外側部４３は、内側部４２よりも小さい。図中において、符号Ｈ１はニップル３０の軸心Ｃ１と平行な方向における外側部４３の高さ、符号Ｈ２はニップル３０の軸心Ｃ１と平行な方向における内側部４２の高さをそれぞれ示す。外側部４３の高さは、内側部４２の高さよりも小さい（Ｈ１＜Ｈ２）。 The outer portion 43 is smaller than the inner portion 42 in the direction parallel to the axis C1 of the nipple 30. In the figure, reference numeral H1 indicates the height of the outer portion 43 in the direction parallel to the axis C1 of the nipple 30, and reference numeral H2 indicates the height of the inner portion 42 in the direction parallel to the axis C1 of the nipple 30. The height of the outer portion 43 is smaller than the height of the inner portion 42 (H1 <H2).

図４に示すように、シール部材４０の挟持状態において、外側部４３は、リム３の張出し部１１ａの内周面に当接する。一方、内側部４２は、凹部３６内において柄部３１の外周面に当接する。 As shown in FIG. 4, in the sandwiched state of the seal member 40, the outer side portion 43 comes into contact with the inner peripheral surface of the overhanging portion 11a of the rim 3. On the other hand, the inner portion 42 abuts on the outer peripheral surface of the handle portion 31 in the recess 36.

上述の通り、リム３とチューブレスタイヤ２との間には、空気圧を保持するエア空間７が形成されている。そのため、エア空間７で保持されている空気圧の作用によって、エア空間７内の空気がシール部材４０の開放空間４１に矢印Ｖ１の如く入り込む（図１０参照）。すると、シール部材４０の開放空間４１内に入り込んだ空気の圧力によって、シール部材４０の外側部４３及び内側部４２はそれぞれニップル３０の軸心Ｃ１と垂直な方向に展開する。図１０において矢印Ｖ２は、シール部材４０の開放空間４１内に入り込んだ空気の圧力によってシール部材４０の外側部４３が展開する方向の一例を示す。 As described above, an air space 7 for holding air pressure is formed between the rim 3 and the tubeless tire 2. Therefore, due to the action of the air pressure held in the air space 7, the air in the air space 7 enters the open space 41 of the seal member 40 as shown by the arrow V1 (see FIG. 10). Then, due to the pressure of the air that has entered the open space 41 of the seal member 40, the outer portion 43 and the inner portion 42 of the seal member 40 expand in the directions perpendicular to the axis C1 of the nipple 30, respectively. In FIG. 10, the arrow V2 indicates an example of the direction in which the outer portion 43 of the seal member 40 expands due to the pressure of the air that has entered the open space 41 of the seal member 40.

本実施形態では、シール部材４０の外側部４３が内側部４２よりも厚みが小さく且つ高さが小さい。そのため、シール部材４０の外側部４３は、内側部４２よりも剛性が低く、ニップル３０の軸心Ｃ１と垂直な方向に展開しやすい。これにより、シール部材４０の外側部４３がリム３の張出し部１１ａの内周面（貫通孔１０の周面）に当接した状態が保持され、気密性を確保できる。 In the present embodiment, the outer portion 43 of the seal member 40 is smaller in thickness and smaller than the inner portion 42. Therefore, the outer portion 43 of the seal member 40 has a lower rigidity than the inner portion 42, and is easily deployed in the direction perpendicular to the axis C1 of the nipple 30. As a result, the state in which the outer side portion 43 of the seal member 40 is in contact with the inner peripheral surface (peripheral surface of the through hole 10) of the overhanging portion 11a of the rim 3 is maintained, and airtightness can be ensured.

＜ニップルの調整角度＞
図９に示すように、ニップル３０の第一拡径部３４及び第二拡径部３５のそれぞれは、リム３の貫通孔１０の内径よりも小さい外径を有する。そのため、シール部材４０の挟持状態において、ニップル３０の少なくとも一部は、リム３の張出し部１１ａの内周面から離反する。これにより、シール部材４０の挟持状態において、シール部材４０が変形しながら貫通孔１０の周面に密着するので、ニップル３０を貫通孔１０内でずらすことが可能（調整可能）となる。 <Nipple adjustment angle>
As shown in FIG. 9, each of the first enlarged diameter portion 34 and the second enlarged diameter portion 35 of the nipple 30 has an outer diameter smaller than the inner diameter of the through hole 10 of the rim 3. Therefore, in the sandwiched state of the seal member 40, at least a part of the nipple 30 is separated from the inner peripheral surface of the overhanging portion 11a of the rim 3. As a result, in the sandwiched state of the seal member 40, the seal member 40 is in close contact with the peripheral surface of the through hole 10 while being deformed, so that the nipple 30 can be displaced (adjustable) in the through hole 10.

図中において、符号Ｃ２は貫通孔１０の軸心、符号Ｋ１は車軸４と直交する仮想線、符号Ｐ１は貫通孔１０の軸心Ｃ２と仮想線Ｋ１との交点、符号Ａ１は交点Ｐ１を基準としたニップル３０の調整角度をそれぞれ示す。なお、図９においては、貫通孔１０の軸心Ｃ２とニップル３０の軸心Ｃ１とを一致させた状態を実線で示している。一方、交点Ｐ１を基準としてニップル３０をずらし（貫通孔１０の軸心Ｃ２に対してニップル３０の軸心Ｃ１をずらし）、ニップル３０の第二拡径部３５の一部をリム３の張出し部１１ａの内周面に当接させた状態を二点鎖線で示している。 In the figure, reference numeral C2 is the axis of the through hole 10, reference numeral K1 is a virtual line orthogonal to the axle 4, reference numeral P1 is an intersection of the axis C2 of the through hole 10 and the virtual line K1, and reference numeral A1 is a reference point P1. The adjustment angles of the nipples 30 are shown. In FIG. 9, the state in which the axis C2 of the through hole 10 and the axis C1 of the nipple 30 are aligned is shown by a solid line. On the other hand, the nipple 30 is displaced with reference to the intersection P1 (the axial center C1 of the nipple 30 is displaced with respect to the axial center C2 of the through hole 10), and a part of the second enlarged diameter portion 35 of the nipple 30 is overhanging the rim 3. The state of being in contact with the inner peripheral surface of 11a is shown by a two-dot chain line.

図９に示すように、貫通孔１０の軸心Ｃ２とニップル３０の軸心Ｃ１とを一致させた状態において、リム３の外部空間側の開口内周面とニップル３０との間には隙間Ｇ１が形成されるので、ニップル３０の角度を調整しやすい構造とすることができる。そのため、リム３にスポーク６を簡単に取り付けることができる。 As shown in FIG. 9, in a state where the axis C2 of the through hole 10 and the axis C1 of the nipple 30 are aligned, a gap G1 is provided between the inner peripheral surface of the opening on the outer space side of the rim 3 and the nipple 30. Is formed, so that the structure can be easily adjusted for the angle of the nipple 30. Therefore, the spokes 6 can be easily attached to the rim 3.

＜作用効果＞
以上説明したように、上記実施形態のスポークホイール１は、タイヤ２を支持するリム３と、車軸４を支持するハブ５と、リム３とハブ５とを接続する複数のスポーク６と、を備え、リム３は、スポーク６を接続するためのニップル３０を通す貫通孔１０を有し、貫通孔１０に配置され、リム３とニップル３０との間に挟持されたシール部材４０を更に備え、ニップル３０の軸心Ｃ１を含む断面視で、シール部材４０は、ニップル３０の軸心Ｃ１と平行な方向に開放した断面である。
この構成によれば、リム３にニップル３０を取り付けるとき、シール部材４０の断面が変形しながらリム３の貫通孔１０に挿入されるため、リム３の貫通孔１０にニップル３０が入りやすい。したがって、リム３にスポーク６を簡単に取り付けることができる。加えて、シール部材４０の断面形状を変形できるため、ニップル３０の指向方向を調整しやすいので、ニップル３０を介してリム３にスポーク６を簡単に取り付けることができる。 <Action effect>
As described above, the spoke wheel 1 of the above embodiment includes a rim 3 that supports the tire 2, a hub 5 that supports the axle 4, and a plurality of spokes 6 that connect the rim 3 and the hub 5. The rim 3 has a through hole 10 through which the nipple 30 for connecting the spokes 6 is passed, and further includes a sealing member 40 arranged in the through hole 10 and sandwiched between the rim 3 and the nipple 30. In a cross-sectional view including the axis C1 of 30, the seal member 40 is a cross section opened in a direction parallel to the axis C1 of the nipple 30.
According to this configuration, when the nipple 30 is attached to the rim 3, the cross section of the seal member 40 is deformed and inserted into the through hole 10 of the rim 3, so that the nipple 30 can easily enter the through hole 10 of the rim 3. Therefore, the spokes 6 can be easily attached to the rim 3. In addition, since the cross-sectional shape of the seal member 40 can be deformed, the directivity direction of the nipple 30 can be easily adjusted, so that the spokes 6 can be easily attached to the rim 3 via the nipple 30.

上記実施形態では、タイヤ２は、チューブレスタイヤ２であり、貫通孔１０は、チューブレスタイヤ２との間で空気圧を保持するエア空間７と外部空間８とに開口し、ニップル３０の軸心Ｃ１を含む断面視で、シール部材４０は、エア空間７の側に開放した断面であることで、以下の効果を奏する。
空気がエア空間７側から外部空間８側に流れるため、シール部材４０がニップル３０の軸心Ｃ１と垂直な方向に展開しやすく、シール部材４０の密着により貫通孔１０の開口部を塞ぎやすい。そのため、気密性が向上し、タイヤ２内の空気がニップル３０から漏れることを抑制することができる。加えて、空気漏れを抑制するためにリム３の周方向に延びる帯状シール部材を設ける必要がないため、部品点数を削減し、コスト低減に寄与する。 In the above embodiment, the tire 2 is a tubeless tire 2, and the through hole 10 is opened in the air space 7 and the external space 8 for holding the air pressure between the tubeless tire 2 and the axial center C1 of the nipple 30. In the cross-sectional view including, the seal member 40 has the following effect because it has a cross-section open to the side of the air space 7.
Since the air flows from the air space 7 side to the external space 8 side, the seal member 40 easily expands in the direction perpendicular to the axis C1 of the nipple 30, and the opening of the through hole 10 is easily closed by the close contact of the seal member 40. Therefore, the airtightness is improved, and it is possible to prevent the air in the tire 2 from leaking from the nipple 30. In addition, since it is not necessary to provide a strip-shaped seal member extending in the circumferential direction of the rim 3 in order to suppress air leakage, the number of parts can be reduced and the cost can be reduced.

上記実施形態では、ニップル３０の軸心Ｃ１を含む断面視で、シール部材４０は、Ｖ字状を有し、シール部材４０の外側部４３の厚みＷ１は、シール部材４０の内側部４２の厚みＷ２よりも小さいことで、以下の効果を奏する。
シール部材４０の外側部４３（シール部材４０のうちニップル３０の軸心Ｃ１に対して遠い部位）の剛性がシール部材４０の内側部４２の剛性よりも小さくなるため、シール部材４０の外側部４３がニップル３０の軸心Ｃ１と垂直な方向に展開しやすく、シール部材４０の密着により貫通孔１０の開口部を塞ぎやすい。そのため、気密性が向上する。加えて、空気漏れを抑制するためにリム３の周方向に延びる帯状シール部材を設ける必要がないため、部品点数を削減し、コスト低減に寄与する。 In the above embodiment, the seal member 40 has a V shape in a cross-sectional view including the axis C1 of the nipple 30, and the thickness W1 of the outer portion 43 of the seal member 40 is the thickness of the inner portion 42 of the seal member 40. By being smaller than W2, the following effects are obtained.
Since the rigidity of the outer portion 43 of the seal member 40 (the portion of the seal member 40 far from the axis C1 of the nipple 30) is smaller than the rigidity of the inner portion 42 of the seal member 40, the outer portion 43 of the seal member 40 Is easy to deploy in the direction perpendicular to the axis C1 of the nipple 30, and the opening of the through hole 10 is easy to be closed due to the close contact of the sealing member 40. Therefore, the airtightness is improved. In addition, since it is not necessary to provide a strip-shaped seal member extending in the circumferential direction of the rim 3 in order to suppress air leakage, the number of parts can be reduced and the cost can be reduced.

上記実施形態では、ニップル３０の軸心Ｃ１と平行な方向において、シール部材４０の外側部４３の高さＨ１は、シール部材４０の内側部４２の高さＨ２よりも小さいことで、以下の効果を奏する。
シール部材４０の外側部４３（シール部材４０のうちニップル３０の軸心Ｃ１に対して遠い部位）の剛性がシール部材４０の内側部４２の剛性よりも小さくなるため、シール部材４０の外側部４３がニップル３０の軸心Ｃ１と垂直な方向に展開しやすく、シール部材４０の密着により貫通孔１０の開口部を塞ぎやすい。そのため、気密性が向上する。加えて、空気漏れを抑制するためにリム３の周方向に延びる帯状シール部材を設ける必要がないため、部品点数を削減し、コスト低減に寄与する。 In the above embodiment, the height H1 of the outer portion 43 of the seal member 40 is smaller than the height H2 of the inner portion 42 of the seal member 40 in the direction parallel to the axis C1 of the nipple 30, which has the following effects. Play.
Since the rigidity of the outer portion 43 of the seal member 40 (the portion of the seal member 40 far from the axis C1 of the nipple 30) is smaller than the rigidity of the inner portion 42 of the seal member 40, the outer portion 43 of the seal member 40 Is easy to deploy in the direction perpendicular to the axis C1 of the nipple 30, and the opening of the through hole 10 is easy to be closed due to the close contact of the sealing member 40. Therefore, the airtightness is improved. In addition, since it is not necessary to provide a strip-shaped seal member extending in the circumferential direction of the rim 3 in order to suppress air leakage, the number of parts can be reduced and the cost can be reduced.

上記実施形態では、ニップル３０の外周には、凹部３６が形成され、シール部材４０は、凹部３６に配置されていることで、以下の効果を奏する。
ニップル３０の外周の凹部３６とシール部材４０の断面形状とが相俟ってラビリンス構造となるため、気密性が向上する。加えて、空気漏れを抑制するためにリム３の周方向に延びる帯状シール部材を設ける必要がないため、部品点数を削減し、コスト低減に寄与する。 In the above embodiment, the recess 36 is formed on the outer periphery of the nipple 30, and the seal member 40 is arranged in the recess 36, thereby achieving the following effects.
The concave portion 36 on the outer periphery of the nipple 30 and the cross-sectional shape of the seal member 40 form a labyrinth structure, so that the airtightness is improved. In addition, since it is not necessary to provide a strip-shaped seal member extending in the circumferential direction of the rim 3 in order to suppress air leakage, the number of parts can be reduced and the cost can be reduced.

上記実施形態では、ニップル３０の軸心Ｃ１を含む断面視で、シール部材４０は、リム３の中央Ｍ１に対してエア空間７の側に配置されていることで、以下の効果を奏する。
シール部材４０がリム３の中央Ｍ１に対して外部空間８の側に配置されている場合と比較して、シール部材４０が外部空間８に飛び出しにくい。そのため、気密性が向上し、タイヤ２内の空気がニップル３０から漏れることを抑制することができる。 In the above embodiment, the seal member 40 is arranged on the side of the air space 7 with respect to the center M1 of the rim 3 in a cross-sectional view including the axis C1 of the nipple 30 to obtain the following effects.
Compared with the case where the seal member 40 is arranged on the side of the external space 8 with respect to the central M1 of the rim 3, the seal member 40 is less likely to pop out into the external space 8. Therefore, the airtightness is improved, and it is possible to prevent the air in the tire 2 from leaking from the nipple 30.

上記実施形態では、ニップル３０は、六角形状に隆起する頭部３２を備えることで、以下の効果を奏する。
ニップル３０の頭部３２内に凹部が形成されている場合と比較して、ニップル３０の締め付けを強固にすることができるため、気密性が向上する。加えて、外部空間８へのニップル３０の露出部位を小さくすることができるため、美観性が向上する。 In the above embodiment, the nipple 30 has the following effects by including the head 32 that rises in a hexagonal shape.
As compared with the case where the concave portion is formed in the head portion 32 of the nipple 30, the tightening of the nipple 30 can be strengthened, so that the airtightness is improved. In addition, since the exposed portion of the nipple 30 to the external space 8 can be reduced, the aesthetic appearance is improved.

＜変形例＞
なお、上記実施形態では、タイヤ２を支持するスポークホイール１の例を挙げて説明したが、これに限らない。例えば、タイヤ２を備える車輪についても本発明を適用可能である。例えば、車輪は、チューブレスタイヤ２と、チューブレスタイヤ２を支持するリム３と、車軸４を支持するハブ５と、リム３とハブ５とを接続する複数のスポーク６と、を備え、リム３は、スポーク６を接続するためのニップル３０を通す貫通孔１０を有し、貫通孔１０は、チューブレスタイヤ２との間で空気圧を保持するエア空間７と外部空間８に開口し、貫通孔１０に配置され、リム３とニップル３０との間に挟持されたシール部材４０を更に備え、ニップル３０の軸心Ｃ１を含む断面視で、シール部材４０は、軸心と平行な方向に開放した断面であっていてもよい。 <Modification example>
In the above embodiment, the example of the spoke wheel 1 that supports the tire 2 has been described, but the present invention is not limited to this. For example, the present invention can be applied to a wheel provided with a tire 2. For example, the wheels include a tubeless tire 2, a rim 3 that supports the tubeless tire 2, a hub 5 that supports the axle 4, and a plurality of spokes 6 that connect the rim 3 and the hub 5. The through hole 10 has a through hole 10 through which the nipple 30 for connecting the spoke 6 is passed, and the through hole 10 is opened in the air space 7 and the external space 8 for holding the air pressure between the tubeless tire 2 and the through hole 10. A seal member 40 that is arranged and sandwiched between the rim 3 and the nipple 30 is further provided, and the seal member 40 has a cross section that is open in a direction parallel to the axis in a cross-sectional view including the axis C1 of the nipple 30. It may be correct.

上記実施形態では、タイヤ２がチューブレスタイヤ２である例を挙げて説明したが、これに限らない。例えば、タイヤ２は、チューブタイヤであってもよい。 In the above embodiment, an example in which the tire 2 is a tubeless tire 2 has been described, but the present invention is not limited to this. For example, the tire 2 may be a tube tire.

上記実施形態では、空気漏れを抑制するためにリム３の周方向に延びる帯状シール部材を有しない例を挙げて説明したが、これに限らない。例えば、スポークホイール１（車輪）は、上記の帯状シール部材を有してもよい。 In the above embodiment, an example having no band-shaped seal member extending in the circumferential direction of the rim 3 in order to suppress air leakage has been described, but the present invention is not limited to this. For example, the spoke wheel 1 (wheel) may have the above-mentioned band-shaped sealing member.

上記実施形態では、シール部材４０は、自身の周方向に連続して開放する円環状の開放空間４１を有する例を挙げて説明したが、これに限らない。例えば、シール部材４０は、自身の周方向に不連続に開放する開放空間を有してもよい。例えば、開放空間は、シール部材４０の周方向に間隔をあけて複数設けられていてもよい。例えば、開放空間は、シール部材４０の周方向の一部のみに設けられていてもよい。例えば、開放空間の形状や位置は、要求仕様に応じて変更することができる。 In the above embodiment, the seal member 40 has been described with reference to an example having an annular open space 41 that continuously opens in the circumferential direction of the seal member 40, but the present invention is not limited to this. For example, the seal member 40 may have an open space that opens discontinuously in its circumferential direction. For example, a plurality of open spaces may be provided at intervals in the circumferential direction of the seal member 40. For example, the open space may be provided only in a part of the sealing member 40 in the circumferential direction. For example, the shape and position of the open space can be changed according to the required specifications.

上記実施形態では、ニップル３０の軸心Ｃ１を含む断面視でシール部材４０がエア空間７の側に開放した断面である例を挙げて説明したが、これに限らない。例えば、ニップル３０の軸心Ｃ１を含む断面視で、シール部材４０は、エア空間７とは反対側（すなわち外部空間８の側）に開放していてもよい。 In the above embodiment, an example in which the seal member 40 is open to the side of the air space 7 in a cross-sectional view including the axial center C1 of the nipple 30 has been described, but the present invention is not limited to this. For example, in a cross-sectional view including the axis C1 of the nipple 30, the seal member 40 may be open to the side opposite to the air space 7 (that is, the side of the external space 8).

上記実施形態では、ニップル３０の軸心Ｃ１を含む断面視でシール部材４０がＶ字状を有する例を挙げて説明したが、これに限らない。シール部材の断面形状は、要求仕様に応じて変更することができる。 In the above embodiment, an example in which the seal member 40 has a V-shape in a cross-sectional view including the axis C1 of the nipple 30 has been described, but the present invention is not limited to this. The cross-sectional shape of the seal member can be changed according to the required specifications.

例えば、図１１に示すように、シール部材１４０は、Ｕ字状の断面形状を有してもよい。シール部材１４０は、ニップル３０の軸心Ｃ１と平行に延びる内側部１４２と、内側部１４２と平行に延びる外側部１４３と、内側部１４２と外側部１４３とを連結する連結部１４４と、を備えてもよい。外側部１４３及び内側部１４２は、ニップル３０の軸心Ｃ１と平行な方向においてそれぞれ一様な厚みを有する。外側部１４３は、シール部材１４０の連結部１４４側から開放端側（開放空間１４１の開口側）にわたって内側部１４２との離反間隔を一定に保持して延びていてもよい。シール部材１４０の外側部１４３の厚みＷ３は、シール部材１４０の内側部１４２の厚みＷ４よりも小さくてもよい。ニップル３０の軸心Ｃ１と平行な方向において、シール部材１４０の外側部１４３の高さＨ３は、シール部材１４０の内側部１４２の高さＨ４よりも小さくてもよい。 For example, as shown in FIG. 11, the seal member 140 may have a U-shaped cross-sectional shape. The seal member 140 includes an inner portion 142 extending parallel to the axis C1 of the nipple 30, an outer portion 143 extending parallel to the inner portion 142, and a connecting portion 144 connecting the inner portion 142 and the outer portion 143. You may. The outer portion 143 and the inner portion 142 each have a uniform thickness in the direction parallel to the axis C1 of the nipple 30. The outer portion 143 may extend from the connecting portion 144 side of the seal member 140 to the open end side (opening side of the open space 141) while maintaining a constant separation interval from the inner portion 142. The thickness W3 of the outer portion 143 of the seal member 140 may be smaller than the thickness W4 of the inner portion 142 of the seal member 140. In the direction parallel to the axis C1 of the nipple 30, the height H3 of the outer portion 143 of the seal member 140 may be smaller than the height H4 of the inner portion 142 of the seal member 140.

例えば、図１２に示すように、シール部材２４０は、Ｘ字状（Ｈ字状）の断面形状を有してもよい。シール部材２４０は、ニップル３０の軸心Ｃ１と平行に延びる内側部２４２と、ニップル３０の軸心Ｃ１に対して斜めに交差する方向に延びる外側部２４３と、内側部２４２と外側部２４３とを連結するとともに窪み２４５を有する連結部２４４と、を備えてもよい。窪み２４５は、連結部２４４において開放空間２４１とは反対側に設けられている。シール部材２４０の外側部２４３の厚みＷ５は、シール部材２４０の内側部２４２の厚みＷ６よりも小さくてもよい。ニップル３０の軸心Ｃ１と平行な方向において、シール部材２４０の外側部２４３の高さＨ５は、シール部材２４０の内側部２４２の高さＨ６よりも小さくてもよい。 For example, as shown in FIG. 12, the seal member 240 may have an X-shaped (H-shaped) cross-sectional shape. The seal member 240 has an inner portion 242 extending parallel to the axial center C1 of the nipple 30, an outer portion 243 extending diagonally intersecting the axial center C1 of the nipple 30, and an inner portion 242 and an outer portion 243. A connecting portion 244 that is connected and has a recess 245 may be provided. The recess 245 is provided in the connecting portion 244 on the side opposite to the open space 241. The thickness W5 of the outer portion 243 of the seal member 240 may be smaller than the thickness W6 of the inner portion 242 of the seal member 240. In the direction parallel to the axis C1 of the nipple 30, the height H5 of the outer portion 243 of the seal member 240 may be smaller than the height H6 of the inner portion 242 of the seal member 240.

上記実施形態では、シール部材４０の外側部４３の厚みは、シール部材４０の内側部４２の厚みよりも小さい例を挙げて説明したが、これに限らない。例えば、シール部材４０の外側部４３の厚みは、シール部材４０の内側部４２の厚み以上の大きさであってもよい。 In the above embodiment, the thickness of the outer portion 43 of the seal member 40 has been described by giving an example smaller than the thickness of the inner portion 42 of the seal member 40, but the present invention is not limited to this. For example, the thickness of the outer portion 43 of the seal member 40 may be larger than the thickness of the inner portion 42 of the seal member 40.

上記実施形態では、ニップル３０の軸心Ｃ１と平行な方向において、シール部材４０の外側部４３の高さは、シール部材４０の内側部４２の高さよりも小さい例を挙げて説明したが、これに限らない。例えば、ニップル３０の軸心Ｃ１と平行な方向において、シール部材４０の外側部４３の高さは、シール部材４０の内側部４２の高さ以上の大きさであってもよい。 In the above embodiment, the height of the outer portion 43 of the seal member 40 is smaller than the height of the inner portion 42 of the seal member 40 in the direction parallel to the axis C1 of the nipple 30. Not limited to. For example, in the direction parallel to the axis C1 of the nipple 30, the height of the outer portion 43 of the seal member 40 may be larger than the height of the inner portion 42 of the seal member 40.

上記実施形態では、ニップル３０の外周には、凹部３６が形成され、シール部材４０は、凹部３６に配置されている例を挙げて説明したが、これに限らない。例えば、ニップル３０の外周には、凹部３６が形成されていなくてもよい。例えば、シール部材４０は、ニップル３０の凹部３６以外の部位に配置されていてもよい。例えば、凹部３６の数や位置は、要求仕様に応じて変更することができる。 In the above embodiment, the recess 36 is formed on the outer periphery of the nipple 30, and the seal member 40 has been described with reference to an example in which the seal member 40 is arranged in the recess 36, but the present invention is not limited to this. For example, the recess 36 may not be formed on the outer periphery of the nipple 30. For example, the seal member 40 may be arranged in a portion other than the recess 36 of the nipple 30. For example, the number and position of the recesses 36 can be changed according to the required specifications.

上記実施形態では、ニップル３０の軸心Ｃ１を含む断面視で、シール部材４０は、リム３の中央Ｍ１に対してエア空間７の側に配置されている例を挙げて説明したが、これに限らない。例えば、シール部材４０は、リム３の中央Ｍ１に対して外部空間８の側に配置されていてもよい。例えば、シール部材４０は、リム３の中央Ｍ１に配置されていてもよい。 In the above embodiment, the seal member 40 has been described with reference to an example in which the seal member 40 is arranged on the side of the air space 7 with respect to the center M1 of the rim 3 in a cross-sectional view including the axis C1 of the nipple 30. Not exclusively. For example, the seal member 40 may be arranged on the side of the external space 8 with respect to the center M1 of the rim 3. For example, the seal member 40 may be arranged at the center M1 of the rim 3.

上記実施形態では、ニップル３０は、六角形状に隆起する頭部３２を備える例を挙げて説明したが、これに限らない。例えば、ニップルの頭部は、六角形状以外の多角形状を有してもよい。例えば、ニップルの頭部の形状は、要求仕様に応じて変更することができる。 In the above embodiment, the nipple 30 has been described with reference to an example in which the head portion 32 is provided in a hexagonal shape, but the present invention is not limited to this. For example, the head of the nipple may have a polygonal shape other than the hexagonal shape. For example, the shape of the head of the nipple can be changed according to the required specifications.

上記実施形態では、頭部３２には、工具等との係合のための凹部は設けられていない例を挙げて説明したが、これに限らない。例えば、ニップルの頭部内には上記凹部が形成されていてもよい。 In the above embodiment, the head 32 is not provided with a recess for engaging with a tool or the like, but the present invention is not limited to this. For example, the recess may be formed in the head of the nipple.

上記実施形態では、リム３の底壁部１１とニップル３０の座部３３との間には、ワッシャ３９が設けられている例を挙げて説明したが、これに限らない。例えば、ワッシャ３９は、ニップル３０の座部３３と一体に形成されていてもよい。例えば、リム３の底壁部１１とニップル３０の座部３３との間には、ワッシャ３９が設けられていなくてもよい。ワッシャ３９が設けられていない場合、座部３３がリム３に直接当接していてもよい。 In the above embodiment, a washer 39 is provided between the bottom wall portion 11 of the rim 3 and the seat portion 33 of the nipple 30, but the present invention is not limited to this. For example, the washer 39 may be integrally formed with the seat portion 33 of the nipple 30. For example, the washer 39 may not be provided between the bottom wall portion 11 of the rim 3 and the seat portion 33 of the nipple 30. If the washer 39 is not provided, the seat 33 may be in direct contact with the rim 3.

なお、本発明は上記実施形態に限られるものではなく、例えば、前記鞍乗り型車両には、運転者が車体を跨いで乗車する車両全般が含まれ、自動二輪車（原動機付自転車及びスクータ型車両を含む）のみならず、三輪（前一輪且つ後二輪の他に、前二輪且つ後一輪の車両も含む）の車両も含まれる。また、本発明は、自動二輪車のみならず、自動車等の四輪の車両にも適用可能である。
そして、上記実施形態における構成は本発明の一例であり、実施形態の構成要素を周知の構成要素に置き換える等、本発明の要旨を逸脱しない範囲で種々の変更が可能である。 The present invention is not limited to the above embodiment. For example, the saddle-riding vehicle includes all vehicles in which a driver rides across a vehicle body, and is a motorcycle (motorized bicycle and scooter-type vehicle). (Including), but also three-wheeled vehicles (including front two-wheeled and rear one-wheeled vehicles in addition to front one-wheeled and rear two-wheeled vehicles). Further, the present invention can be applied not only to motorcycles but also to four-wheeled vehicles such as automobiles.
The configuration in the above embodiment is an example of the present invention, and various changes can be made without departing from the gist of the present invention, such as replacing the constituent elements of the embodiment with well-known constituent elements.

１スポークホイール
２チューブレスタイヤ（タイヤ）
３リム
４車軸
５ハブ
６スポーク
７エア空間
８外部空間
１０貫通孔
３０ニップル
３２頭部
３６凹部
４０，１４０，２４０シール部材
４２，１４２，２４２内側部
４３，１４３，２４３外側部
Ｃ１ニップルの軸心
Ｍ１リムの中央
Ｗ１，Ｗ３，Ｗ５シール部材の外側部の厚み
Ｗ２，Ｗ４，Ｗ６シール部材の内側部の厚み
Ｈ１，Ｈ３，Ｈ５シール部材の外側部の高さ
Ｈ２，Ｈ４，Ｈ６シール部材の内側部の高さ 1 Spoke wheel 2 Tubeless tire (tire)
3 Rim 4 Axle 5 Hub 6 Spoke 7 Air space 8 External space 10 Through hole 30 Nipple 32 Head 36 Recess 40, 140, 240 Seal member 42, 142, 242 Inner part 43, 143, 243 Outer part C1 Nipple axis Center of M1 rim W1, W3, W5 Thickness of outer part of seal member W2, W4, W6 Thickness of inner part of seal member H1, H3, H5 Height of outer part of seal member H2, H4, H6 Inside of seal member The height of the part

Claims

The rim (3) that supports the tire (2) and
A hub (5) that supports the axle (4) and
A plurality of spokes (6) connecting the rim (3) and the hub (5) are provided.
The rim (3) has a through hole (10) through which a nipple (30) for connecting the spokes (6) is passed.
Further comprising a sealing member (40) disposed in the through hole (10) and sandwiched between the rim (3) and the nipple (30).
A spoke wheel characterized in that the seal member (40) has a cross section opened in a direction parallel to the axis (C1) in a cross-sectional view including the axis (C1) of the nipple (30).

The tire (2) is a tubeless tire (2).
The through hole (10) is opened in the air space (7) and the external space (8) for holding the air pressure between the tubeless tire (2) and the tubeless tire (2).
The spoke wheel according to claim 1, wherein the seal member (40) has a cross section open to the side of the air space (7) in a cross-sectional view including the axial center (C1).

The seal member (40) has a U-shape in a cross-sectional view including the axis (C1).
The thickness (W1, W3, W5) of the outer portion (43) of the seal member (40) is smaller than the thickness (W2, W4, W6) of the inner portion (42) of the seal member (40). The spoke wheel according to claim 1 or 2.

The seal member (40) has a U-shape in a cross-sectional view including the axis (C1).
In the direction parallel to the axis (C1), the height (H1, H3, H5) of the outer portion (43) of the seal member (40) is the height of the inner portion (42) of the seal member (40). The spoke wheel according to any one of claims 1 to 3, wherein the spoke wheel is smaller than (H2, H4, H6).

A recess (36) is formed on the outer circumference of the nipple (30).
The spoke wheel according to any one of claims 1 to 4, wherein the seal member (40) is arranged in the recess (36).

The tire (2) is a tubeless tire (2).
The through hole (10) is opened in the air space (7) and the external space (8) for holding the air pressure between the tubeless tire (2) and the tubeless tire (2).
In a cross-sectional view including the axis (C1), the seal member (40) is characterized in that it is arranged on the side of the air space (7) with respect to the center (M1) of the rim (3). The spoke wheel according to any one of claims 1 to 5.

The spoke wheel according to any one of claims 1 to 6, wherein the nipple (30) includes a head (32) that rises in a hexagonal shape.

Tubeless tire (2) and
The rim (3) that supports the tubeless tire (2) and
A hub (5) that supports the axle (4) and
A plurality of spokes (6) connecting the rim (3) and the hub (5) are provided.
The rim (3) has a through hole (10) through which a nipple (30) for connecting the spokes (6) is passed.
The through hole (10) is opened in the air space (7) and the external space (8) for holding the air pressure between the tubeless tire (2) and the tubeless tire (2).
Further comprising a sealing member (40) disposed in the through hole (10) and sandwiched between the rim (3) and the nipple (30).
A wheel characterized in that the seal member (40) has a cross section opened in a direction parallel to the axis (C1) in a cross-sectional view including the axis of the nipple (30).