JP6732265B1 - One leg stand type auxiliary wheel unit and bicycle - Google Patents

One leg stand type auxiliary wheel unit and bicycle Download PDF

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JP6732265B1
JP6732265B1 JP2019072728A JP2019072728A JP6732265B1 JP 6732265 B1 JP6732265 B1 JP 6732265B1 JP 2019072728 A JP2019072728 A JP 2019072728A JP 2019072728 A JP2019072728 A JP 2019072728A JP 6732265 B1 JP6732265 B1 JP 6732265B1
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leg
auxiliary wheel
leg portion
bicycle
wheel unit
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啓示 大雅
啓示 大雅
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株式会社クロップス
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Abstract

【課題】本発明は、転倒事故を抑制しつつ、補助輪の使用性を高めることができる片脚スタンド型補助輪ユニットの提供を課題とする。【解決手段】本発明の一態様に係る片脚スタンド型補助輪ユニットは、自転車の後輪の側方でこの自転車の車体に取り付け可能な取り付け部と、長手方向の一端側で上記取り付け部に軸支され、起立位置と跳ね上げ位置との間で揺動可能な脚部と、上記脚部に軸支され、上記脚部の起立位置で上記取り付け部に係合されるロック片と、上記取り付け部及びロック片に接続され、上記脚部の起立位置と跳ね上げ位置との間で上記脚部の揺動方向が変化するよう上記取り付け部及びロック片を対向方向に付勢するばね部材と、上記脚部の他端側に取り付けられる補助輪とを備える。【選択図】図１PROBLEM TO BE SOLVED: To provide a one-leg stand type auxiliary wheel unit capable of enhancing usability of an auxiliary wheel while suppressing a fall accident. A one-leg stand type auxiliary wheel unit according to an aspect of the present invention includes a mounting portion that can be mounted to a body of a bicycle at a side of a rear wheel of the bicycle and a mounting portion at one end side in a longitudinal direction of the mounting portion. A leg portion that is pivotally supported and is capable of swinging between an upright position and a flip-up position; a lock piece that is pivotally supported by the leg portion and that is engaged with the mounting portion at the upright position of the leg portion; A spring member that is connected to the mounting portion and the lock piece and that biases the mounting portion and the lock piece in opposite directions so that the swinging direction of the leg portion changes between the standing position and the flip-up position of the leg portion; , An auxiliary wheel attached to the other end of the leg portion. [Selection diagram] Figure 1

Description

本発明は、片脚スタンド型補助輪ユニット及び自転車に関する。 The present invention relates to a one-leg stand type auxiliary wheel unit and a bicycle.

自転車用の補助輪は、自転車の後輪の側方でこの自転車の車体に取り付けられる。通常、この補助輪は、棒状のアームの一端に取り付けられ、このアームの他端を自転車の後輪の車軸の端部にボルトの締め付けによって固定することで自転車に取り付けられる。この補助輪は、自転車に乗るための技術を習得するために用いられるもので、技術の習得段階に対応して使用、不使用が選択される。 Auxiliary wheels for a bicycle are attached to the body of the bicycle on the side of the rear wheel of the bicycle. Usually, the auxiliary wheel is attached to one end of a rod-shaped arm, and the other end of the arm is attached to the bicycle by fixing the other end to the end of the axle of the rear wheel of the bicycle by tightening a bolt. This auxiliary wheel is used for learning the technique for riding a bicycle, and is selected to be used or not to be used according to the learning stage of the technique.

上述のように、補助輪がアームを介して車軸に取り付けられる構成によると、この補助輪の使用をやめようとする場合、補助輪をアーム毎自転車から取り外すことを要する。そのため、この構成によると、補助輪の着脱が容易でないため、補助輪の使用をやめるタイミングを捉え難い。また、実際上、一端補助輪の使用をやめた後に再度補助輪をつけて練習することが望まれる場合があるが、上記構成によると、補助輪の着脱の困難性から再度の補助輪の装着を躊躇する場合がある。その結果、自転車に乗れるまでの期間が長くなったり、練習中に転倒事故等を起こすおそれが高くなる。 As described above, according to the configuration in which the auxiliary wheel is attached to the axle via the arm, when it is desired to stop using the auxiliary wheel, it is necessary to remove the auxiliary wheel from the bicycle together with the arm. Therefore, according to this configuration, since it is not easy to attach and detach the auxiliary wheel, it is difficult to grasp the timing when the auxiliary wheel is stopped. In addition, in practice, it may be desirable to stop using the auxiliary wheels and then practice again with the auxiliary wheels.However, according to the above configuration, it is difficult to attach and detach the auxiliary wheels, and it is necessary to attach the auxiliary wheels again. You may hesitate. As a result, it takes a long time to ride a bicycle, and there is a high possibility that a fall accident may occur during practice.

このような観点から、自転車の車体に取り付けられるブラケット部に対してアームを立設姿勢と跳ね上げ姿勢との間で揺動可能に構成することで、ブラケット部を自転車の車体から取り外すことなく補助輪の使用、不使用を選択可能な構成が提案されている（特開２００３−１９９８７号公報参照）。 From this point of view, by constructing the arm so that it can swing between the upright position and the upright position with respect to the bracket part that is attached to the bicycle body, it is possible to assist without removing the bracket part from the bicycle body. A configuration has been proposed in which the use or nonuse of a wheel can be selected (see Japanese Patent Laid-Open No. 2003-19987).

特開２００３−１９９８７号公報Japanese Patent Laid-Open No. 2003-19987

上記公報に記載の補助車輪構造は、アームを立設姿勢位置に移動させたうえ、係止片をブラケット部に係合することでアームを立設姿勢で固定するものである。しかしながら、補助車輪を使用するユーザは幼少であることが多く、係止片をブラケット部に確実に係合することを失念する場合がある。この場合、上記補助車輪構造によると、自転車の走行中にアームが意図せず跳ね上げ姿勢に移動し、転倒事故等を招来するおそれがある。 In the auxiliary wheel structure described in the above publication, the arm is fixed in the upright position by moving the arm to the upright position and engaging the locking piece with the bracket portion. However, the user who uses the auxiliary wheel is often a young user, and sometimes forgets to securely engage the locking piece with the bracket portion. In this case, according to the above-mentioned auxiliary wheel structure, the arm may unintentionally move to the flip-up posture during traveling of the bicycle, which may cause a fall accident or the like.

本発明は、このような事情に基づいてなされたものであり、転倒事故を抑制しつつ、補助輪の使用性を高めることができる片脚スタンド型補助輪ユニット及び自転車を提供することを課題とする。 The present invention has been made under such circumstances, and it is an object of the present invention to provide a one-leg stand type auxiliary wheel unit and a bicycle that can improve the usability of auxiliary wheels while suppressing a fall accident. To do.

上記課題を解決するためになされた本発明の一態様に係る片脚スタンド型補助輪ユニットは、自転車の後輪の側方でこの自転車の車体に取り付け可能な取り付け部と、長手方向の一端側で上記取り付け部に軸支され、起立位置と跳ね上げ位置との間で揺動可能な脚部と、上記脚部に軸支され、上記脚部の起立位置で上記取り付け部に係合されるロック片と、上記取り付け部及びロック片に接続され、上記脚部の起立位置と跳ね上げ位置との間で上記脚部の揺動方向が変化するよう上記取り付け部及びロック片を対向方向に付勢するばね部材と、上記脚部の他端側に取り付けられる補助輪とを備える。 The one-leg stand type auxiliary wheel unit according to one aspect of the present invention made to solve the above-mentioned problems includes an attachment portion that can be attached to the body of the bicycle at the side of the rear wheel of the bicycle and one end side in the longitudinal direction. And a leg portion pivotally supported by the mounting portion and swingable between an upright position and a flip-up position, and pivotally supported by the leg portion, and engaged with the mounting portion at the upright position of the leg portion. The lock piece is connected to the mounting portion and the lock piece, and the mounting portion and the lock piece are attached in opposite directions so that the swinging direction of the leg portion changes between the upright position and the flip-up position of the leg portion. A biasing spring member and an auxiliary wheel attached to the other end of the leg portion are provided.

当該片脚スタンド型補助輪ユニットは、脚部が起立位置と跳ね上げ位置との間で揺動可能に構成されているので、上記脚部を揺動することで、補助輪の使用、不使用を容易に選択することができる。当該片脚スタンド型補助輪ユニットは、ばね部材が、上記脚部の起立位置と跳ね上げ位置との間で上記脚部の揺動方向が変化するよう上記取り付け部及びロック片を対向方向に付勢するので、上記脚部を起立位置に移動させることで上記ロック片を上記取り付け部に自動的に係合することができる。従って、当該片脚スタンド型補助輪ユニットは、転倒事故を抑制しつつ、補助輪の使用性を高めることができる。 Since the leg portion of the one-leg stand type auxiliary wheel unit is configured to be swingable between the upright position and the flip-up position, the auxiliary wheel is used or not used by swinging the leg portion. Can be easily selected. In the one-leg stand type auxiliary wheel unit, the spring member attaches the mounting portion and the lock piece in opposite directions so that the swinging direction of the leg portion changes between the standing position and the flip-up position of the leg portion. Since it is biased, the lock piece can be automatically engaged with the mounting portion by moving the leg portion to the standing position. Therefore, the one-leg stand type auxiliary wheel unit can improve the usability of the auxiliary wheel while suppressing a fall accident.

上記ロック片が、上記脚部の外側に配置され、上記ばね部材が接続される外側支持板と、上記脚部の内側に配置される内側支持板と、上記外側支持板及び内側支持板間に架け渡され、上記脚部に接続される回転軸と、上記回転軸を基準として上記ばね部材との接続部分よりも径方向外側で、上記外側支持板の起立方向側の側縁に立設されるロック解除用の押し込み片とを有するとよい。このように、上記ロック片が、上記脚部の外側に配置され、上記ばね部材が接続される外側支持板と、上記脚部の内側に配置される内側支持板と、上記外側支持板及び内側支持板間に架け渡され、上記脚部に接続される回転軸と、上記回転軸を基準として上記ばね部材との接続部分よりも径方向外側で、上記外側支持板の起立方向側の側縁に立設されるロック解除用の押し込み片とを有することで、上記押し込み片をユーザが手で押し込むことで、上記脚部を容易かつ安全に跳ね上げ位置に移動させることができる。 The lock piece is arranged outside the leg portion, the outer support plate to which the spring member is connected, the inner support plate arranged inside the leg portion, and between the outer support plate and the inner support plate. It is erected on the side edge on the upright side of the outer support plate radially outside the connecting portion of the rotating shaft that is bridged and connected to the leg portion and the spring member with the rotating shaft as a reference. And a push-in piece for unlocking. Thus, the lock piece is arranged outside the leg portion, the outer support plate to which the spring member is connected, the inner support plate arranged inside the leg portion, the outer support plate and the inner side. A rotation shaft that is bridged between the support plates and connected to the leg portion, and a side edge on the upright side of the outer support plate that is radially outside of the connection portion between the rotation member and the spring member. By having the push-in piece for unlocking which is erected on the above, the user can easily and safely move the leg portion to the flip-up position by pushing the push-in piece by hand.

上記脚部が、上記回転軸が接続される直線状の第１部分と、この第１部分から連続し、側方に延びる第２部分と、この第２部分から連続し、上記補助輪が取り付けられる第３部分とを有し、上記脚部の起立位置において、上記補助輪の上端が少なくとも上記押し込み片の下端よりも上方に位置するとよい。このように、上記脚部が、上記回転軸が接続される直線状の第１部分と、この第１部分から連続し、側方に延びる第２部分と、この第２部分から連続し、上記補助輪が取り付けられる第３部分とを有し、上記脚部の起立位置において、上記補助輪の上端が少なくとも上記押し込み片の下端よりも上方に位置することによって、ユーザの足が意図せず上記ロック片に接触することを抑制し、ロック状態が誤って解除されるおそれを低減することができる。 The leg portion is continuous with the linear first portion to which the rotary shaft is connected, the second portion extending from the first portion, and the second portion extending laterally, and the second portion, and the auxiliary wheel is attached. It is preferable that the upper end of the auxiliary wheel is located at least above the lower end of the pushing piece in the upright position of the leg portion. In this way, the leg portion is continuous with the linear first portion to which the rotary shaft is connected, the second portion that extends from the first portion, and the second portion that extends laterally, and the second portion that extends from the second portion. A third portion to which the auxiliary wheel is attached, and in the standing position of the leg, the upper end of the auxiliary wheel is located at least above the lower end of the pushing piece, so that the user's foot unintentionally It is possible to suppress contact with the lock piece and reduce the risk of accidentally releasing the locked state.

上記外側支持板の起立方向側の側縁が、直線部と、上記押し込み片が接続される接続部と、上記直線部及び接続部間に配置され、上記押し込み片側に向けて起立方向側に傾斜した傾斜部とを有するとよい。このように、上記外側支持板の起立方向側の側縁が、直線部と、上記押し込み片が接続される接続部と、上記直線部及び接続部間に配置され、上記押し込み片側に向けて起立方向側に傾斜した傾斜部とを有することで、上記押し込み片の押し込みによるロック状態の解除の容易化を図ると共に、ユーザの足が意図せず上記ロック片に接触した場合にロック状態が誤って解除されるおそれを低減することができる。 The side edge of the outer supporting plate on the upright direction side is arranged between the straight portion, the connecting portion to which the pushing piece is connected, and the straight portion and the connecting portion, and is inclined toward the upright direction side toward the pushing piece side. And an inclined portion. Thus, the side edge of the outer supporting plate on the upright direction side is disposed between the straight portion, the connecting portion to which the pushing piece is connected, the straight portion and the connecting portion, and stands up toward the pushing piece side. By having an inclined portion that is inclined toward the direction side, it is possible to facilitate the release of the locked state by pushing the pushing piece, and when the user's foot unintentionally touches the locking piece, the locked state is erroneously set. The risk of being released can be reduced.

上記脚部の起立位置における側面視で、上記脚部の中心軸に対する上記直線部の傾斜角度が上記脚部の中心軸に対する上記接続部の傾斜角度よりも大きいとよい。このように、上記脚部の起立位置における側面視で、上記脚部の中心軸に対する上記直線部の傾斜角度が上記脚部の中心軸に対する上記接続部の傾斜角度よりも大きいことによって、上記押し込み片が意図せずユーザの足で押されることを抑制し、ロック状態が誤って解除されるおそれをより低減することができる。 In a side view of the leg portion in the standing position, the inclination angle of the straight portion with respect to the central axis of the leg portion may be larger than the inclination angle of the connecting portion with respect to the central axis of the leg portion. Thus, in a side view of the leg portion in the standing position, the inclination angle of the straight portion with respect to the central axis of the leg portion is larger than the inclination angle of the connection portion with respect to the central axis of the leg portion, and thus the pushing-in is performed. It is possible to prevent the piece from being unintentionally pressed by the user's foot, and further reduce the risk of accidentally releasing the locked state.

上記課題を解決するためになされた本発明の他の一態様に係る自転車は、当該片脚スタンド型補助輪ユニットを備える。 A bicycle according to another aspect of the present invention made to solve the above problem includes the one-leg stand type auxiliary wheel unit.

当該自転車は、当該片脚スタンド型補助輪ユニットを備えるので、転倒事故を抑制しつつ、補助輪の使用性を高めることができる。 Since the bicycle includes the one-leg stand type auxiliary wheel unit, it is possible to improve the usability of the auxiliary wheel while suppressing a fall accident.

なお、本発明において、「後」とは、直進方向の反対側をいい、「側方」とは、直進方向に対する左右方向を意味する。 In the present invention, "rear" means the side opposite to the straight traveling direction, and "side" means the lateral direction with respect to the straight traveling direction.

本発明の一態様に係る片脚スタンド型補助輪ユニット及び自転車及び本発明の他の一態様に係る自転車は、転倒事故を抑制しつつ、補助輪の使用性を高めることができる。 The one-leg stand type auxiliary wheel unit and bicycle according to one aspect of the present invention and the bicycle according to another aspect of the present invention can improve usability of the auxiliary wheel while suppressing a fall accident.

図１は、本発明の一実施形態に係る片脚スタンド型補助輪ユニットの自転車に取り付けられた起立位置状態を示す模式的側面図である。FIG. 1 is a schematic side view showing a standing position state of a one-leg stand type auxiliary wheel unit attached to a bicycle according to an embodiment of the present invention. 図２は、図１の片脚スタンド型補助輪ユニットの自転車に取り付けられた跳ね上げ位置状態を示す模式的側面図である。FIG. 2 is a schematic side view showing a flip-up position state of the one-leg stand type auxiliary wheel unit of FIG. 1 attached to a bicycle. 図３は、図１の片脚スタンド型補助輪ユニットの起立状位置状態を示す前方から見た模式的正面図である。FIG. 3 is a schematic front view showing the upright position of the one-leg stand type auxiliary wheel unit of FIG. 1 as seen from the front. 図４は、図３の片脚スタンド型補助輪ユニットの模式的Ａ−Ａ線断面図である。FIG. 4 is a schematic cross-sectional view taken along the line AA of the one-leg stand type auxiliary wheel unit shown in FIG. 図５は、図４の片脚スタンド型補助輪ユニットにおけるロック片と取り付け部との係合状態を示す模式的側面図である。FIG. 5 is a schematic side view showing an engagement state of the lock piece and the mounting portion in the one-leg stand type auxiliary wheel unit of FIG. 4. 図６は、図１の片脚スタンド型補助輪ユニットのロック解除手順を示す模式図的側面図である。FIG. 6 is a schematic side view showing an unlocking procedure of the one-leg stand type auxiliary wheel unit of FIG. 1.

以下、適宜図面を参照しつつ、本発明の実施の形態を詳説する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

＜片脚スタンド型補助輪ユニット＞
図１〜図３の片脚スタンド型補助輪ユニット１（以下、単に「補助輪ユニット１」ともいう）は、自転車２の後輪の側方でこの自転車２の車体２ａに取り付け可能に構成される。当該補助輪ユニット１は、自転車２の車体２ａに取り付け可能な取り付け部１１と、長手方向の一端側で取り付け部１１に軸支され、図１の起立位置と図２の跳ね上げ位置との間で揺動可能な脚部１２と、脚部１２に軸支され、脚部１２の起立位置で取り付け部１１に係合されるロック片１３と、取り付け部１１及びロック片１３に接続され、脚部１２の起立位置と跳ね上げ位置との間で脚部１２の揺動方向が変化するよう取り付け部１１及びロック片１３を対向方向に付勢するばね部材１４と、脚部１２の他端側に取り付けられる補助輪１５とを備える。なお、図１〜図３では、当該補助輪ユニット１が自転車２の左側の側方で車体２ａに取り付けられる構成について図示しているが、当該補助輪ユニットは、自転車２の右側の側方で車体２ａに取り付けられてもよい。当該補助輪ユニットが自転車２の右側の側方で車体２ａに取り付けられるものである場合、この補助輪ユニットは、自転車２を左右方向に２分割する仮想平面を基準として図１〜図３の補助輪ユニット１と対象な構成とすることができる。 <One leg stand type auxiliary wheel unit>
The one-leg stand type auxiliary wheel unit 1 of FIGS. 1 to 3 (hereinafter, also simply referred to as “auxiliary wheel unit 1”) is configured to be attached to the body 2a of the bicycle 2 at the side of the rear wheel of the bicycle 2. It The auxiliary wheel unit 1 is mounted between a mounting portion 11 that can be mounted on the vehicle body 2a of the bicycle 2 and is pivotally supported by the mounting portion 11 at one end side in the longitudinal direction, and between the standing position of FIG. 1 and the flipped position of FIG. A swingable leg portion 12, a lock piece 13 pivotally supported by the leg portion 12 and engaged with the mounting portion 11 at a standing position of the leg portion 12, and a leg portion connected to the mounting portion 11 and the lock portion 13. A spring member 14 for urging the mounting portion 11 and the lock piece 13 in opposite directions so that the swinging direction of the leg portion 12 changes between the upright position and the flip-up position of the leg portion 12, and the other end side of the leg portion 12. And an auxiliary wheel 15 attached to the. 1 to 3, the auxiliary wheel unit 1 is attached to the vehicle body 2a on the left side of the bicycle 2, but the auxiliary wheel unit is attached to the right side of the bicycle 2. It may be attached to the vehicle body 2a. When the auxiliary wheel unit is attached to the vehicle body 2a on the right side of the bicycle 2, the auxiliary wheel unit is the auxiliary wheel unit shown in FIGS. 1 to 3 with reference to a virtual plane that divides the bicycle 2 into the left and right directions. It can be a target configuration with the wheel unit 1.

（取り付け部）
取り付け部１１は、例えば自転車２の後輪の車軸近傍で自転車２のフレームに固定される。取り付け部１１は、図４に示すように、脚部１２の起立位置において後述するロック片１３の係合部１３ｅと係合される係止孔１１ａを有する。 (Mounting part)
The mounting portion 11 is fixed to the frame of the bicycle 2 near the axle of the rear wheel of the bicycle 2, for example. As shown in FIG. 4, the attachment portion 11 has a locking hole 11a that is engaged with an engagement portion 13e of the lock piece 13 described below at the standing position of the leg portion 12.

（ロック片）
図３及び図４に示すように、ロック片１３は、脚部１２の外側（左右方向における外側）に配置され、ばね部材１４が接続される外側支持板１３ａと、脚部１２の内側（左右方向における内側）に配置される内側支持板１３ｂと、外側支持板１３ａ及び内側支持板１３ｂ間に架け渡され、脚部に接続される回転軸１３ｃと、回転軸１３ｃを基準としてばね部材１４との接続部分よりも径方向外側で、外側支持板１３ａの起立方向側（起立位置における前方）の側縁に立設されるロック解除用の押し込み片１３ｄとを有する。また、ロック片１３は、外側支持板１３ａ及び内側支持板１３ｂの起立方向側の側縁同士を接続し、脚部１２の起立位置において取り付け部１１の係止孔１１ａに係合される係合部１３ｅを有する。係合部１３ｅは、外側支持板１３ａ及び内側支持板１３ｂの側縁間に架け渡される基部と、基部から取り付け部１１側に突出するフック部とを有しており、脚部１２が起立位置に移動した際に、上記フック部が自動的に係止孔１１ａに挿入されるよう構成されている。換言すると、当該補助輪ユニット１は、脚部１２の揺動方向が跳ね上げ方向から起立方向に変化した状態でロック片１３も回転軸１３ｃを中心に起立方向に揺動し、上記フック部を係止孔１１ａに挿入するよう構成されている。一方、当該補助輪ユニット１は、押し込み片１３ｄを押し込むと、上記基部が脚部１２に当接する。当該補助輪ユニット１は、押し込み片１３ｄをさらに跳ね上げ方向側に押し込むことで脚部１２及びロック片１３の揺動方向が跳ね上げ方向に変化し、脚部１２を跳ね上げ位置に移動させることができる。従って、当該補助輪ユニット１は、押し込み片１３ｄをユーザが手で押し込むことで、脚部１２を容易かつ安全に跳ね上げ位置に移動させることができる。なお、外側支持板１３ａ、内側支持板１３ｂ、押し込み片１３ｄ、係合部１３ｅ等、ロック片１３を構成する各部は一体的に形成されていてもよい。また、各部の境界部分は湾曲していてもよい。 (Lock piece)
As shown in FIGS. 3 and 4, the lock piece 13 is arranged outside the leg portion 12 (outside in the left-right direction), and the outer support plate 13a to which the spring member 14 is connected and the inside of the leg portion 12 (left-right direction). Inner support plate 13b disposed on the inner side in the direction), a rotation shaft 13c bridged between the outer support plate 13a and the inner support plate 13b and connected to the leg portion, and a spring member 14 with the rotation shaft 13c as a reference. And a push-in piece 13d for unlocking which is erected on the side edge of the outer side support plate 13a on the upright side (the front side in the upright position) on the outer side in the radial direction than the connecting portion. Further, the lock piece 13 connects side edges of the outer side support plate 13a and the inner side support plate 13b on the upright direction side, and is engaged with the locking hole 11a of the mounting portion 11 at the upright position of the leg portion 12. It has a part 13e. The engaging portion 13e has a base portion bridged between the side edges of the outer supporting plate 13a and the inner supporting plate 13b, and a hook portion protruding from the base portion to the mounting portion 11 side, and the leg portion 12 is in the standing position. The hook portion is configured to be automatically inserted into the locking hole 11a when moved to. In other words, in the auxiliary wheel unit 1, the lock piece 13 also swings in the standing direction about the rotation shaft 13c in a state where the swinging direction of the leg portion 12 changes from the flip-up direction to the standing direction, and the hook portion is moved. It is configured to be inserted into the locking hole 11a. On the other hand, in the auxiliary wheel unit 1, when the pushing piece 13d is pushed in, the base portion comes into contact with the leg portion 12. In the auxiliary wheel unit 1, by further pushing the pushing piece 13d toward the flip-up direction, the swinging direction of the leg 12 and the lock piece 13 is changed to the flip-up direction, and the leg 12 is moved to the flip-up position. You can Therefore, in the auxiliary wheel unit 1, the user can push the pushing piece 13d by hand to move the leg 12 to the flip-up position easily and safely. The outer supporting plate 13a, the inner supporting plate 13b, the pushing piece 13d, the engaging portion 13e and the like, which constitute the lock piece 13, may be integrally formed. Further, the boundary portion of each part may be curved.

外側支持板１３ａは細長状であり、長手方向の一端側に回転軸１３ｃが取り付けられ、長手方向の他端側に押し込み片１３ｄが設けられる。具体的には、外側支持板１３ａは、側面視略長方形状であり、長手方向に延びる一対の側縁を有している。外側支持板１３ａは、起立方向側の上記側縁の他端側（回転軸１３ｃが取り付けられるのと反対側）の端部に押し込み片１３ｄが接続されている。 The outer support plate 13a has an elongated shape, the rotary shaft 13c is attached to one end side in the longitudinal direction, and the pushing piece 13d is provided to the other end side in the longitudinal direction. Specifically, the outer support plate 13a has a substantially rectangular shape in a side view and has a pair of side edges extending in the longitudinal direction. The push-out piece 13d is connected to the other end of the outer side support plate 13a on the upright side (the opposite side to the side where the rotary shaft 13c is attached).

図５に示すように、外側支持板１３ａの起立方向側の側縁２１は、直線部２１ａと、押し込み片１３ｄが接続される接続部２１ｂと、直線部２１ａ及び接続部２１ｂ間に配置され、押し込み片１３ｄ側に向けて起立方向側に傾斜した傾斜部２１ｃとを有する。直線部２１ａ、傾斜部２１ｃ及び接続部２１ｂは、側縁２１の一方側（回転軸１３ｃが取り付けられる側）から他方側にこの順で設けられている。当該補助輪ユニット１は、直線部２１ａと接続部２１ｂとの間に傾斜部２１ｃを設けることで、脚部１２の起立位置における側面視で、脚部１２の中心軸Ｘ（後述の第１部分１２ａの中心軸）に対する直線部２１ａの傾斜角度αを小さくすることができる。これにより、直線部２１ａの押し込みに対するロック片１３の揺動幅を小さくし、直線部２１ａへの意図しない接触に起因して係合部１３ｅが係止孔１１ａから抜け出るのを抑制しやすい。また、当該補助輪ユニット１は、直線部２１ａと接続部２１ｂとの間に傾斜部２１ｃを設けることで、接続部２１ｂを起立方向側に突出させることができ、ユーザが押し込み片１３ｄを手で押し込みやすくなる。従って、当該補助輪ユニット１は、押し込み片１３ｄの押し込みによるロック解除の容易化を図ると共に、ユーザの足が意図せず直線部２１ａに接触した場合等にロック状態が誤って解除されるおそれを低減することができる。 As shown in FIG. 5, the side edge 21 on the upright side of the outer support plate 13a is arranged between the linear portion 21a, the connecting portion 21b to which the pushing piece 13d is connected, and the linear portion 21a and the connecting portion 21b. It has an inclined portion 21c inclined toward the standing direction side toward the pushing piece 13d side. The straight portion 21a, the inclined portion 21c, and the connecting portion 21b are provided in this order from one side of the side edge 21 (the side to which the rotating shaft 13c is attached) to the other side. In the auxiliary wheel unit 1, the inclined portion 21c is provided between the straight portion 21a and the connecting portion 21b, so that the central axis X of the leg portion 12 (the first portion to be described later) in a side view at the standing position of the leg portion 12. The inclination angle α of the straight portion 21a with respect to the central axis of 12a) can be reduced. This makes it possible to reduce the swing width of the lock piece 13 with respect to the pushing of the linear portion 21a, and to easily prevent the engaging portion 13e from coming out of the locking hole 11a due to unintentional contact with the linear portion 21a. Further, in the auxiliary wheel unit 1, the inclined portion 21c is provided between the linear portion 21a and the connecting portion 21b, so that the connecting portion 21b can be projected in the standing direction side, and the user can manually push the pushing piece 13d. Easy to push. Therefore, the auxiliary wheel unit 1 facilitates unlocking by pushing the push-in piece 13d, and there is a risk that the locked state may be accidentally released when the user's foot unintentionally touches the straight portion 21a. It can be reduced.

直線部２１ａは、外側支持板１３ａの起立方向側の側縁２１のうち、係合部１３ｅとの接続部分と近接して配置される。直線部２１ａは、例えば上記接続部分と連続して設けられる。 The linear portion 21a is arranged close to the portion of the side edge 21 of the outer side support plate 13a on the upright direction side that is connected to the engaging portion 13e. The straight portion 21a is provided, for example, continuously with the connecting portion.

接続部２１ｂは、外側支持板１３ａの起立方向側の側縁２１のうち、係合部１３ｅとの接続部分と反対側の端部に設けられる。接続部２１ｂは、例えば直線状である。また、接続部２１ｂは、両端部に対して中央部分が起立方向側に***した台形状、円弧状等であってもよい。 The connecting portion 21b is provided at an end portion of the side edge 21 of the outer supporting plate 13a on the upright side, which is opposite to the connecting portion with the engaging portion 13e. The connection portion 21b has, for example, a linear shape. Further, the connecting portion 21b may have a trapezoidal shape in which the central portion is raised toward the standing direction side with respect to both end portions, or an arc shape.

傾斜部２１ｃは、直線部２１ａと接続部２１ｂとに連続して設けられてもよく、直線部２１ａ及び接続部２１ｂの一方又は両方との間に他の部分を介して設けられてもよい。 The inclined portion 21c may be provided continuously to the linear portion 21a and the connecting portion 21b, or may be provided between one or both of the linear portion 21a and the connecting portion 21b via another portion.

図５に示すように、脚部１２の起立位置における側面視で、脚部１２の中心軸Ｘに対する直線部２１ａの傾斜角度αは脚部１２の中心軸Ｘに対する接続部２１ｂの傾斜角度βよりも大きいことが好ましい。このように傾斜角度βを小さくすることで、押し込み片１３ｄが意図せずユーザの足で押されることを抑制し、ロック状態が誤って解除されるおそれをより低減することができる。また、この構成によると、図６に示すように、ユーザは親指以外の指で脚部１２を把持した状態で、親指によって押し込み片１３ｄを押し込みやすい。従って、押し込み片１３ｄの押し込みによるロック解除の容易化を図ると共に、ロック状態が誤って解除されるおそれをより低減することができる。なお、「脚部の中心軸に対する接続部の傾斜角度」とは、側縁に沿って接続部を３等分した場合の各領域の中央位置における脚部の中心軸に対する傾斜角度の平均値をいう。また、「脚部の中心軸」とは、ロック片が接続される直線状部分の中心軸をいい、本実施形態では後述の第１部分１２ａの中心軸をいう。 As shown in FIG. 5, in a side view of the leg portion 12 in the standing position, the inclination angle α of the straight portion 21a with respect to the central axis X of the leg portion 12 is larger than the inclination angle β of the connecting portion 21b with respect to the central axis X of the leg portion 12. Is also preferably large. By reducing the inclination angle β in this way, it is possible to prevent the pushing piece 13d from being unintentionally pushed by the user's foot, and to further reduce the risk of accidentally releasing the locked state. Further, according to this configuration, as shown in FIG. 6, the user easily pushes the push-in piece 13d with the thumb while holding the leg portion 12 with the fingers other than the thumb. Therefore, it is possible to facilitate unlocking by pushing the push-in piece 13d, and further reduce the risk that the locked state is accidentally released. In addition, "the inclination angle of the connecting portion with respect to the central axis of the leg" means the average value of the inclination angle with respect to the central axis of the leg at the center position of each region when the connecting portion is divided into three along the side edge. Say. Further, the "central axis of the leg portion" means the central axis of the linear portion to which the lock piece is connected, and in the present embodiment, the central axis of the later-described first portion 12a.

直線部２１ａの長さは傾斜部２１ｃの長さ（側縁に沿う長さ）よりも大きいことが好ましい。傾斜部２１ｃの長さに対する直線部２１ａの長さの比の下限としては、２が好ましく、３がより好ましい。当該補助輪ユニット１は、傾斜部２１ｃの長さに対する直線部２１ａの長さの比を大きくすることで、傾斜部２１への意図しない接触を抑制し、ロック状態が誤って解除されるおそれを低減することができる。一方、上記比の上限としては、８が好ましく、６がより好ましい。上記比が上記上限を超えると、ロック片１３が不必要に大きくなるおそれがある。 The length of the straight portion 21a is preferably larger than the length of the inclined portion 21c (the length along the side edge). As a lower limit of the ratio of the length of the linear portion 21a to the length of the inclined portion 21c, 2 is preferable, and 3 is more preferable. The auxiliary wheel unit 1 suppresses unintentional contact with the inclined portion 21 by increasing the ratio of the length of the straight portion 21a to the length of the inclined portion 21c, and may prevent the locked state from being accidentally released. It can be reduced. On the other hand, the upper limit of the above ratio is preferably 8, and more preferably 6. If the ratio exceeds the upper limit, the lock piece 13 may become unnecessarily large.

押し込み片１３ｄは、接続部２１ｂから側方に突出する板状の突片である。押し込み片１３ｄは、左右方向外側に突出してもよく、内側に突出してもよい。例えば押し込み片１３ｄが左右方向内側に突出する場合、ユーザの指による押し込み片１３ｄの押し込み作業の容易化を図ると共に、ユーザの足が意図せず押し込み片１３ｄに接触するのを抑えやすい。 The pressing piece 13d is a plate-shaped protruding piece that laterally protrudes from the connecting portion 21b. The pushing piece 13d may protrude outward in the left-right direction or may protrude inward. For example, when the pushing piece 13d projects inward in the left-right direction, it is possible to facilitate the pushing operation of the pushing piece 13d by the user's finger and to prevent the user's foot from unintentionally contacting the pushing piece 13d.

（脚部）
脚部１２は、例えば棒状である。図３及び図４に示すように、脚部１２は、回転軸１３ｃが接続される直線状の第１部分１２ａと、第１部分１２ａから連続し、側方（自転車２への取り付け状態における左右方向外側）に延びる第２部分１２ｂと、第２部分１２ｂから連続し、補助輪１５が取り付けられる第３部分１２ｃとを有する。脚部１２は一端側から他端側に向けて第１部分１２ａ、第２部分１２ｂ及び第３部分１２ｃをこの順で有する。つまり、脚部１２は、第１部分１２ａの一端側で取り付け部１１に軸支され、第３部分１２ｃの他端側に補助輪１５が取り付けられる。 (leg)
The leg 12 has, for example, a rod shape. As shown in FIGS. 3 and 4, the leg portion 12 is continuous with the linear first portion 12a to which the rotating shaft 13c is connected, and the first portion 12a, and is located laterally (left and right when mounted on the bicycle 2). The second portion 12b extends outward in the direction) and the third portion 12c that is continuous from the second portion 12b and to which the auxiliary wheel 15 is attached. The leg portion 12 has a first portion 12a, a second portion 12b, and a third portion 12c in this order from one end side toward the other end side. That is, the leg portion 12 is pivotally supported by the attachment portion 11 at one end side of the first portion 12a, and the auxiliary wheel 15 is attached at the other end side of the third portion 12c.

第１部分１２ａは、回転軸１３ｃによってロック片１３と接続される。図６に示すように、第１部分１２ａは、脚部１２の起立位置におけるロック片１３の他端（押し込み片１３ｄが形成される側の端部）と第２部分１２ｂとの間にユーザによって把持可能な把持領域Ｒを有する。 The first portion 12a is connected to the lock piece 13 by the rotating shaft 13c. As shown in FIG. 6, the first part 12a is provided between the other end of the lock piece 13 (the end on the side where the pushing piece 13d is formed) and the second part 12b at the standing position of the leg 12 by the user. It has a gripping area R that can be gripped.

図３に示すように、脚部１２の起立位置において、補助輪１５の上端は少なくとも押し込み片１３ｄの下端よりも上方に位置することが好ましい。当該補助輪ユニット１は、補助輪１５の上端が押し込み片１３ｄの下端よりも上方に位置することで、ユーザの足が意図せずロック片１３に接触することを補助輪１５によって妨げ、ロック状態が誤って解除されるおそれを低減することができる。 As shown in FIG. 3, at the standing position of the leg portion 12, it is preferable that the upper end of the auxiliary wheel 15 is located at least above the lower end of the pushing piece 13d. Since the upper end of the auxiliary wheel 15 is located above the lower end of the pushing piece 13d, the auxiliary wheel unit 1 prevents the foot of the user from unintentionally coming into contact with the lock piece 13 by the auxiliary wheel 15 and is locked. It is possible to reduce the risk of being accidentally released.

図３に示すように、脚部１２の起立位置において、補助輪１５の上端の高さ位置Ｈ１は、押し込み片１３ｄの上端の高さ位置Ｈ２と同位以上であることが好ましく、補助輪１５の上端の高さ位置Ｈ１は、押し込み片１３ｄの上端の高さ位置Ｈ２よりも高いことがより好ましい。これにより、ユーザの足が意図せずロック片１３に接触することをより容易に抑制することができる。 As shown in FIG. 3, in the standing position of the leg portion 12, the height position H1 of the upper end of the auxiliary wheel 15 is preferably equal to or higher than the height position H2 of the upper end of the pushing piece 13d, and It is more preferable that the height position H1 of the upper end is higher than the height position H2 of the upper end of the pushing piece 13d. As a result, it is possible to more easily suppress unintentional contact of the user's foot with the lock piece 13.

（ばね部材）
上述のように、ばね部材１４は、取り付け部１１とロック片１３とを対向方向に付勢する。ばね部材１４は、脚部１２の起立位置ではロック片１３を起立方向に揺動する。また、ばね部材１４は、押し込み片１３ｄを押し込んでいくと脚部１２及びロック片１３を跳ね上げ方向に揺動する。ばね部材１４の付勢力は、押し込み片１３ｄのユーザの手による押し込みが容易になるよう比較的小さくてもよい。 (Spring member)
As described above, the spring member 14 biases the mounting portion 11 and the lock piece 13 in the opposite direction. The spring member 14 swings the lock piece 13 in the standing direction at the standing position of the leg 12. Further, the spring member 14 swings the leg 12 and the lock piece 13 in the flip-up direction as the push-in piece 13d is pushed in. The biasing force of the spring member 14 may be relatively small so that the pushing piece 13d can be easily pushed by the user.

＜自転車＞
自転車２は、当該補助輪ユニットを備える。自転車２は、後輪の側方の一方側にのみ当該補助輪ユニットを備えていてもよく、後輪の側方の両側に当該補助輪ユニットを備えていてもよい。 <Bicycle>
The bicycle 2 includes the auxiliary wheel unit. The bicycle 2 may include the auxiliary wheel unit only on one side of the rear wheel, or may include the auxiliary wheel unit on both sides of the rear wheel.

＜利点＞
当該片脚スタンド型補助輪ユニット１は、脚部１２が起立位置と跳ね上げ位置との間で揺動可能に構成されているので、脚部１２を揺動することで、補助輪１５の使用、不使用を容易に選択することができる。当該片脚スタンド型補助輪ユニット１は、ばね部材１４が、脚部１２の起立位置と跳ね上げ位置との間で脚部１２の揺動方向が変化するよう取り付け部１１及びロック片１３を対向方向に付勢するので、脚部１２を起立位置に移動させることでロック片１３を取り付け部１１に自動的に係合することができる。従って、当該片脚スタンド型補助輪ユニット１は、転倒事故を抑制しつつ、補助輪１５の使用性を高めることができる。 <Advantages>
Since the leg portion 12 of the one-leg stand type auxiliary wheel unit 1 is swingable between the upright position and the flip-up position, the auxiliary wheel 15 is used by swinging the leg portion 12. , Can be easily selected not to use. In the one-leg stand type auxiliary wheel unit 1, the spring member 14 faces the mounting portion 11 and the lock piece 13 so that the swinging direction of the leg 12 changes between the standing position and the flipped-up position of the leg 12. Since it is biased in the direction, the lock piece 13 can be automatically engaged with the mounting portion 11 by moving the leg portion 12 to the standing position. Therefore, the one-leg stand type auxiliary wheel unit 1 can improve the usability of the auxiliary wheel 15 while suppressing a fall accident.

当該自転車２は、当該片脚スタンド型補助輪ユニット１を備えるので、転倒事故を抑制しつつ、補助輪１５の使用性を高めることができる。 Since the bicycle 2 includes the one-leg stand type auxiliary wheel unit 1, the usability of the auxiliary wheel 15 can be enhanced while suppressing a fall accident.

［その他の実施形態］
今回開示された実施の形態は全ての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記実施形態の構成に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内での全ての変更が含まれることが意図される。 [Other Embodiments]
The embodiments disclosed this time are to be considered as illustrative in all points and not restrictive. The scope of the present invention is not limited to the configurations of the above-described embodiments, but is shown by the claims, and is intended to include meanings equivalent to the claims and all modifications within the scope. It

上記ロック片は、ユーザの指で押し込むことでロックが解除される構成であることが好ましいが、上記ロック片の具体的構成は上記実施形態の構成に限定されるものではなく、例えば必ずしも上述の押し込み片を有しなくてもよい。また、上記ロック片が外側支持板を有する場合、この外側支持板の起立方向側の側縁は、必ずしも上述の直線部、接続部及び傾斜部を有しなくてもよい。さらに、上記外側支持板が上述の直線部、接続部及び傾斜部を有する場合であっても、脚部の起立位置における側面視での脚部の中心軸に対する直線部の傾斜角度を脚部の中心軸に対する傾斜部の傾斜角度以下とすることも可能である。 The lock piece preferably has a configuration in which the lock is released by being pushed with a user's finger, but the specific configuration of the lock piece is not limited to the configuration of the above-described embodiment, and, for example, the above-described configuration is not always necessary. The pushing piece may not be included. Further, when the lock piece has the outer supporting plate, the side edge of the outer supporting plate on the upright direction side does not necessarily have to have the straight line portion, the connecting portion and the inclined portion. Further, even when the outer support plate has the above-described linear portion, connecting portion, and inclined portion, the inclination angle of the linear portion with respect to the central axis of the leg portion in the side view in the standing position of the leg portion is set to the leg portion of the leg portion. It is also possible to set the inclination angle of the inclined portion with respect to the central axis or less.

上記脚部は、必ずしも上述の第１部分、第２部分及び第３部分を有していなくてもよい。また、当該補助輪ユニットは、上記脚部の起立位置において、補助輪の上端が押し込み片の下端よりも下方に位置する構成を採用することも可能である。 The leg portion does not necessarily have to have the above-mentioned first portion, second portion, and third portion. Further, the auxiliary wheel unit may be configured such that the upper end of the auxiliary wheel is located below the lower end of the pushing piece at the standing position of the leg portion.

以上のように、本発明の一態様に係る片脚スタンド型補助輪ユニットは、転倒事故を抑制しつつ、補助輪の使用性を高めることができるので、自転車の練習用に適している。 As described above, the one-leg stand type auxiliary wheel unit according to one aspect of the present invention can improve the usability of the auxiliary wheel while suppressing a fall accident, and thus is suitable for practicing a bicycle.

１ 片脚スタンド型補助輪ユニット（補助輪ユニット）
２ 自転車
２ａ 車体
１１ 取り付け部
１１ａ 係止孔
１２ 脚部
１２ａ 第１部分
１２ｂ 第２部分
１２ｃ 第３部分
１３ ロック片
１３ａ 外側支持板
１３ｂ 内側支持板
１３ｃ 回転軸
１３ｄ 押し込み片
１３ｅ 係合部
１４ ばね部材
１５ 補助輪
２１ 側縁
２１ａ 直線部
２１ｂ 接続部
２１ｃ 傾斜部
Ｘ 中心軸
Ｒ 把持領域 1 One-leg stand type auxiliary wheel unit (auxiliary wheel unit)
2 Bicycle 2a Vehicle body 11 Attachment part 11a Locking hole 12 Leg part 12a First part 12b Second part 12c Third part 13 Lock piece 13a Outer support plate 13b Inner support plate 13c Rotating shaft 13d Pushing piece 13e Engagement part 14 Spring member 15 auxiliary wheel 21 side edge 21a straight part 21b connecting part 21c inclined part X central axis R gripping region

Claims (5)

自転車の後輪の側方でこの自転車の車体に取り付け可能な取り付け部と、
長手方向の一端側で上記取り付け部に軸支され、起立位置と跳ね上げ位置との間で揺動可能な脚部と、
上記脚部に軸支され、上記脚部の起立位置で上記取り付け部に係合されるロック片と、
上記取り付け部及びロック片に接続され、上記脚部の起立位置と跳ね上げ位置との間で上記脚部の揺動方向が変化するよう上記取り付け部及びロック片を対向方向に付勢するばね部材と、
上記脚部の他端側に取り付けられる補助輪と
を備え、
上記ロック片が、
上記脚部の外側に配置され、上記ばね部材が接続される外側支持板と、
上記脚部の内側に配置される内側支持板と、
上記外側支持板及び内側支持板間に架け渡され、上記脚部に接続される回転軸と、
上記回転軸を基準として上記ばね部材との接続部分よりも径方向外側で、上記外側支持板の起立方向側の側縁に立設されるロック解除用の押し込み片と
を有し、
上記脚部が、上記回転軸が接続される直線状の第１部分と、上記第１部分から連続し、側方に延びる第２部分と、上記第２部分から連続し、上記補助輪が取り付けられる第３部分とを有する片脚スタンド型補助輪ユニット。 An attachment part that can be attached to the body of this bicycle at the side of the rear wheel of the bicycle,
A leg portion pivotally supported by the mounting portion at one end side in the longitudinal direction and swingable between a standing position and a flip-up position,
A lock piece that is axially supported by the leg portion and is engaged with the mounting portion at the standing position of the leg portion,
A spring member that is connected to the mounting portion and the lock piece and biases the mounting portion and the lock piece in opposite directions so that the swinging direction of the leg portion changes between the standing position and the flip-up position of the leg portion. When,
An auxiliary wheel attached to the other end of the leg ,
The lock piece is
An outer support plate arranged outside the leg portion, to which the spring member is connected,
An inner support plate arranged inside the leg portion,
A rotary shaft that is bridged between the outer support plate and the inner support plate and connected to the leg portion,
A push-out piece for unlocking, which is erected on the side edge on the upright side of the outer support plate radially outside of the connection portion with the spring member with respect to the rotating shaft.
Have
The leg portion is continuous with the linear first portion to which the rotating shaft is connected, the second portion extending from the first portion, and the second portion extending laterally, and the second portion, and the auxiliary wheel is attached. One- legged stand-type auxiliary wheel unit having a third portion to be used . 上記脚部の起立位置において、上記補助輪の上端が少なくとも上記押し込み片の下端よりも上方に位置する請求項１に記載の片脚スタンド型補助輪ユニット。 In the standing position of the upper Kiashi section, one leg standing type auxiliary wheel unit according to claim 1 the upper end of the auxiliary wheel is located above the lower end of at least the pushing piece. 上記外側支持板の起立方向側の側縁が、直線部と、上記押し込み片が接続される接続部と、上記直線部及び接続部間に配置され、上記押し込み片側に向けて起立方向側に傾斜した傾斜部とを有する請求項１又は請求項２に記載の片脚スタンド型補助輪ユニット。 The side edge of the outer supporting plate on the upright direction side is arranged between the straight portion, the connecting portion to which the pushing piece is connected, and the straight portion and the connecting portion, and is inclined toward the upright direction side toward the pushing piece side. The one-leg stand type auxiliary wheel unit according to claim 1 or 2 , further comprising: 上記脚部の起立位置における側面視で、上記脚部の中心軸に対する上記直線部の傾斜角度が上記脚部の中心軸に対する上記接続部の傾斜角度よりも大きい請求項３に記載の片脚スタンド型補助輪ユニット。 The one-leg stand according to claim 3 , wherein a tilt angle of the straight portion with respect to a central axis of the leg portion is larger than a tilt angle of the connecting portion with respect to a central axis of the leg portion in a side view in a standing position of the leg portion. Type auxiliary wheel unit. 請求項１から請求項４のいずれか１項に記載の片脚スタンド型補助輪ユニットを備える自転車。 A bicycle comprising the one-leg stand type auxiliary wheel unit according to any one of claims 1 to 4 .
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