JP5410772B2 - Infant seat for bicycle - Google Patents

Infant seat for bicycle Download PDF

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JP5410772B2
JP5410772B2 JP2009026356A JP2009026356A JP5410772B2 JP 5410772 B2 JP5410772 B2 JP 5410772B2 JP 2009026356 A JP2009026356 A JP 2009026356A JP 2009026356 A JP2009026356 A JP 2009026356A JP 5410772 B2 JP5410772 B2 JP 5410772B2
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infant
seat
crotch
bicycle
support portion
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JP2010179823A (en
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政之 正瑞
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オージーケー技研株式会社
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Description

本発明は、自転車のハンドルステムの後方とサドルの前方との間に配置される前側用の幼児同乗座席に関するものである。   The present invention relates to a front passenger seat that is disposed between a rear side of a handle stem of a bicycle and a front side of a saddle.

自転車に装着される前側用の幼児同乗座席は、幼児を座らせる為の座席本体と、この座席本体を自転車のハンドルステムに取り付ける為の取付手段とを備えている(例えば、特許文献1等参照)。
特許文献1に記載されたような従来の幼児同乗座席にあっては、ハンドルステムを挟持する取付手段から後方に延設された支持ステーを介して座席本体が支持される構造となっており、座席本体は、幼児がその臀部のみならず大腿部を含めて深く腰掛けられるように、前後方向に奥行きのある椅子型のものとされていた。
A front passenger seat mounted on a bicycle includes a seat body for seating the infant, and attachment means for attaching the seat body to the handle stem of the bicycle (see, for example, Patent Document 1). ).
In the conventional infant passenger seat as described in Patent Document 1, the seat body is supported via a support stay extending rearward from the attachment means for sandwiching the handle stem. The seat body is a chair type with a depth in the front-rear direction so that the infant can sit deeply including not only the buttocks and the thighs.

このような前側用の幼児同乗座席は、乗車した幼児の様子を見守りながら自転車を運転できる点では好都合であるが、座席本体が奥行きのある椅子型であることに加え、ハンドルステムと取付手段との間に支持ステーが介在している為に、ハンドルステムから後方への突出量が大きくなり、運転者の乗降スペースが狭くなる等の欠点は否定できない。
そこで、幼児同乗座席を自転車のハンドルステムに近づけて、可及的に前側へ寄せるようにし、もって幼児同乗座席の後端と自転車のサドル前端との間隔を広く確保し、運転者の乗り降りのし易さとハンドルの操舵性を向上させることができるものが提案されている(特許文献2参照)。
Such a front passenger seat is convenient in that the bicycle can be driven while watching the infant riding, but in addition to the chair body having a deep seat, the handle stem and the mounting means Since the support stay is interposed between the two, the amount of rearward protrusion from the handle stem increases and the driver's boarding space becomes unavoidable.
Therefore, the infant passenger seat should be brought closer to the front of the bicycle as close as possible to the bicycle's handle stem, ensuring a wide space between the rear edge of the infant passenger seat and the front edge of the bicycle saddle. The thing which can improve the ease and the steering property of a handle | steering-wheel is proposed (refer patent document 2).

この幼児同乗座席は、幼児の大腿部を支持する部分を自転車のハンドルステムに対してその左右両側へ振り分けるように配置させた構成により、幼児同乗座席を自転車の前側に寄せるという目的を達成している。要するに、この幼児同乗座席に対して幼児を座らせると、幼児は股部で自転車のハンドルステムを挟み込んで両足を前方へ投げ出すような姿勢となるので、足の大部分がハンドルステムを越えるように前側へ寄って座る状態となる。   This infant passenger seat achieves the purpose of bringing the infant passenger seat closer to the front of the bicycle by arranging the part that supports the infant's thigh to the left and right sides of the handle stem of the bicycle. ing. In short, when the infant is seated against this infant seat, the infant will be in a posture that sandwiches the handlebar stem of the bicycle at the crotch and throws out both feet forward, so that most of the legs exceed the handlebar stem. Sit down to the front.

このように、幼児の両足が自転車のハンドルステムを越えて前方へ投げ出されるような姿勢となるから、この幼児用座席装置では、必須ではないものの専用の前カゴを組み合わせた構成も提案され、この前カゴの中で幼児の両足を支持することが可能なように工夫されている。   In this way, since the infant's legs are thrown forward beyond the handlebar stem of the bicycle, this infant seat device is also proposed to be configured with a dedicated front basket, although it is not essential. It is devised to be able to support both feet of the infant in the front basket.

実開昭51−140943号公報Japanese Utility Model Publication No. 51-140943 特開2007−302228号公報JP 2007-302228 A

特許文献2の幼児同乗座席でも、自転車への装着状態で可及的に前側へ寄せる効果は十分に得られるものであるが、幼児同乗座席の装着位置を前側へすればするほど、ハンドルステムやハンドルとの間で幼児の乗車スペースは狭くなり、幼児の足がハンドル等と干渉し易くなる等、自転車の運転者にとっての運転や乗り降りを容易化することと、幼児の乗せ降ろしを容易化することとは、二律背反した問題でもあった。   Even in the infant passenger seat of Patent Document 2, the effect of moving to the front as much as possible in the state of being mounted on a bicycle is sufficiently obtained. However, as the infant passenger seat is moved to the front, the handle stem and Infants' riding space between the steering wheel and the child's feet is reduced, and the infant's feet are more likely to interfere with the steering wheel, etc., making it easier for the bicycle driver to drive and get on and off and for the infant to easily get on and off. That was also a contradictory issue.

また、特許文献2の幼児同乗座席では、必須ではないものの、専用の前カゴの使用を予定したものである為、一般的なタイプの前カゴが既に装着されている自転車に対し、この幼児同乗座席を後付けするには既存の前カゴを取り外す必要があった。
本発明は、上記事情に鑑みてなされたものであって、幼児同乗座席を自転車における前部スペース(ハンドルステムの後方とサドルの前方との間)に装着しても、幼児同乗座席の後端と自転車のサドル前端との間隔を可及的に広くでき、運転者の乗り降りのし易さと、ハンドルの操舵性を向上させながら幼児の載せ降ろしを容易にすることでき、また、専用品でない一般的なタイプの前カゴと支障なく併用可能な幼児同乗座席を提供することを目的とする。
In addition, although the infant passenger seat of Patent Document 2 is not essential, it is planned to use a dedicated front basket. To retrofit the seat, the existing front basket had to be removed.
The present invention has been made in view of the above circumstances, and even if the infant passenger seat is mounted in the front space of the bicycle (between the rear of the handle stem and the front of the saddle), the rear end of the infant passenger seat is provided. And the front edge of the saddle of the bicycle can be made as wide as possible, making it easier for the driver to get on and off and improving the steering of the handle, making it easier for the infant to get on and off. The purpose is to provide an infant passenger seat that can be used together with other types of front baskets.

前記目的を達成するために、本発明は次の手段を講じた。
即ち、本発明に係る自転車用幼児同乗座席は、自転車のハンドルステムの後方とサドルの前方との間に配置されるものであって、座席本とこの座席本体を自転車へ装着する取付手段とを有している。このうち、前記座席本体は、着座させる幼児の臀部と左右大腿部とのうち臀部のみを支承する座面と、この座面に着座した幼児の会陰部乃至内股を支承しつつ左右大腿部を左右振り分け状に下げ降ろす股鞍部と、下げ降ろされた幼児の足を載せる足載せ部を有する足載せ支持部を備えている。これに対し、前記取付手段は前記股鞍部の前部に設けられている。
In order to achieve the above object, the present invention has taken the following measures.
That is, the infant seat for bicycles according to the present invention is disposed between the rear of the handle stem of the bicycle and the front of the saddle, and includes a seat book and an attaching means for attaching the seat body to the bicycle. Have. The seat body includes a seat surface that supports only the buttocks of the infant's buttocks and left and right thighs to be seated, and the left and right thighs while supporting the perineum or inner thigh of the infant seated on the seat surface. and a crotch saddle unloading lowered lateral distribution shape, and a foot rest support part with a footrest mounting the lower unloaded infants foot. On the other hand, the attachment means is provided at the front part of the crotch part.

そして、前記座席本体の股鞍部は、前記座面の前部を左右対称な凹状の湾曲面で括らせながら先細り状に突出させた形状であって且つ前記湾曲面の前方に対して前記座面よりも幼児の膝部が低くなるように大腿部を下げ降ろす上下方向の空間を形成させていることを特徴としている。
このように、幼児の臀部を支承する座面の前方から左右対称な凹状の湾曲面を介して先細り状に突出した股鞍部が設けられているので、幼児は、その臀部のみを座面に乗せ、左右凹状の湾曲面の前方で股鞍部の左右側方の位置に形成される上下方向の空間を通じて、幼児の膝部が座面より低い位置になるように、左右大腿部を凹状の湾曲面に沿わせて股鞍部から左右振り分け状に下げ降ろし、足先を足載せ部上に置くという乗車姿勢をとることができる。
The crotch portion of the seat body has a shape in which the front portion of the seat surface projects in a tapered shape while constricting the front portion of the seat surface with a symmetrical concave curved surface, and the seat surface with respect to the front of the curved surface It is characterized in that a vertical space for lowering and lowering the thigh is formed so that the infant's knee is lower .
In this way, since the crotch portion is provided so as to project from the front of the seat surface supporting the infant's buttocks through a concave curved surface symmetrical to the left and right, the infant can place only the buttocks on the seat surface. The left and right thighs are curved in a concave manner so that the infant's knee is positioned lower than the seat through the vertical space formed in front of the left and right concave curved surfaces and on the left and right sides of the crotch. It is possible to take a riding posture in which it is lowered from the crotch part to the left and right along the surface and the toes are placed on the footrest part.

従って、座面の前後長さが幼児の臀部のみが載せられる程度の寸法があれば十分となり、股鞍部が先行技術文献1の支持ステーに相当する役割をも担い、また、幼児の足が下げ降ろされてハンドル等と干渉し難くなるので、結果として、幼児同乗座席を自転車のハンドルステムに対して近づけて装着することができるようになって、幼児同乗座席の後端とサドルとの間隔を可及的に広くすることができる。また、幼児同乗座席が自転車のハンドルステムに対して近づくことによって、ハンドルの操舵性も向上する。   Therefore, it is sufficient that the seat surface has a length that allows only the infant's buttocks to be placed thereon, and the crotch part also serves as a support stay of Prior Art Document 1, and the infant's feet are lowered. As a result, it is difficult to interfere with the handlebars etc. as a result, and as a result, the infant passenger seat can be mounted close to the bicycle handle stem, and the distance between the rear edge of the infant passenger seat and the saddle is reduced. Can be as wide as possible. In addition, the steering performance of the steering wheel is improved by bringing the infant passenger seat closer to the steering wheel stem of the bicycle.

しかも、先行技術文献2のように、幼児が自転車のハンドルステムを越えて両足を前方へ投げ出すことはないので、幼児の載せ降ろしは、持ち上げた幼児を座面上方で単純に上下動させるだけで行えるものとなり、円滑且つ容易となる。
上記構成において、前記足載せ支持部は、前記座席本体の股鞍部から下方に向けて左右振り分け状に設けられた側方支持部を有し、この各側方支持部には、前記股鞍部の左右外側方向へ膨らむ膨出面を設けることができる。
Moreover, unlike the prior art document 2, since the infant does not throw both feet forward beyond the handlebar stem of the bicycle, the infant can simply be moved up and down just above the seat surface. It can be done and is smooth and easy.
In the above configuration, the footrest support portion includes a side support portion provided in a left-right distribution shape downward from the crotch portion of the seat body, and each of the side support portions includes the crotch portion. A bulging surface that bulges in the laterally outward direction can be provided.

これにより、幼児の内股が、側方支持部の膨出面に接触する状態をつくりだすことができ、股を締めて内股や膝で股鞍部や各側方支持部の膨出面を左右から挟み込み、身体がふらつかないように、ニーグリップの姿勢をとることを幼児に対して自然に促すことも可能である。
更に、前記足載せ支持部は、前記座席本体の座面の各湾曲面から連続した後方支持部を有し、この各後方支持部には、下げ降ろされた幼児の足の外側部分を保護する外側保護部を設けることができる。
As a result, the infant's inner crotch can be brought into contact with the bulging surface of the side support part, and the crotch is tightened and the crotch part and the bulging surface of each side support part are sandwiched from the left and right with the inner crotch and knees. It is also possible to naturally encourage the infant to take a knee grip posture so as not to wander.
Further, the footrest support portion has a rear support portion that is continuous from each curved surface of the seat surface of the seat body, and each rear support portion protects an outer portion of the lowered foot of the infant. An outer protective part can be provided.

また、前記股鞍部の前部には、前方へ迫り上がり状とされた股当部を設けることができ、この股当部で前傾姿勢気味で着座した幼児の股を支承することが可能である。   Further, the front part of the crotch part can be provided with a crotch part that is pushed forward, and it is possible to support the crotch of an infant seated in a forward leaning position at this crotch part. is there.

本発明に係る自転車用幼児同乗座席によれば、この幼児同乗座席を自転車のハンドルステムの後方とサドル前方との間に装着しても、従来のものに比べて幼児同乗座席の後端と自転車のサドル前端との間隔を広くでき、自転車の運転者の乗り降りと幼児の乗せ降ろしが容易となり、好適な操縦性が確保できる。   According to the infant passenger seat for bicycles according to the present invention, even if this infant passenger seat is mounted between the rear of the handlebar stem of the bicycle and the front of the saddle, the rear end of the infant passenger seat and the bicycle are compared with the conventional one. The distance between the front edge of the saddle and the saddle can be widened, and it is easy for a bicycle driver to get on and off and an infant to get on and off, so that suitable maneuverability can be secured.

本発明に係る第1実施形態の幼児同乗座席の自転車への装着状態を示した側面図である。It is the side view which showed the mounting state to the bicycle of the infant passenger seat of 1st Embodiment which concerns on this invention. 図1のA−A線矢視図である。It is an AA arrow line view of FIG. 図2のB−B線断面図である。FIG. 3 is a sectional view taken along line B-B in FIG. 2. 取付手段で採用した弾性スリーブの分解斜視図である。It is a disassembled perspective view of the elastic sleeve employ | adopted by the attachment means. 図1の幼児同乗座席を示した側面図である。It is the side view which showed the infant passenger seat of FIG. 図5に対応する斜視図である。FIG. 6 is a perspective view corresponding to FIG. 5. 座席本体の座面及び股鞍部のみを示した平面図である。It is the top view which showed only the seat surface and crotch part of the seat main body. 図5のC−C線断面図である。It is CC sectional view taken on the line of FIG. 本発明に係る第2実施形態の斜視図である。It is a perspective view of 2nd Embodiment which concerns on this invention. 本発明に係る第3実施形態の斜視図である。It is a perspective view of 3rd Embodiment which concerns on this invention.

以下、本発明の実施の形態を、図面に基づき説明する。
図1乃至図8は、本発明に係る自転車用幼児同乗座席1の第1実施形態を示している。図1、図2及び図5に示すように、この自転車用幼児同乗座席1は、座席本体2と取付手段3とを有しており、この取付手段3を介して自転車4に装着することができる。
座席本体2は、座面5と、股鞍部6と、左右一対の足載せ支持部7と、左右一対の足載せ部8を有し、更に、座面5にはその左右両側に手すり部9と、後部に背凭れ部10が設けられている。これらは、座席本体2として適宜樹脂材料によって一体的に形成することができる。また、背凭れ部10には、ヘッドレスト11が高さ調節可能なように昇降自在に設けられ、このヘッドレスト11は降下した状態において、背凭れ部10や手すり部9の内側に収納できるようになっている。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 8 show a first embodiment of a bicycle infant seat 1 according to the present invention. As shown in FIGS. 1, 2, and 5, the bicycle infant seat 1 has a seat body 2 and attachment means 3, and can be attached to the bicycle 4 via the attachment means 3. it can.
The seat body 2 includes a seat surface 5, a crotch portion 6, a pair of left and right footrest support portions 7, and a pair of left and right footrest portions 8. Further, the seat surface 5 has handrail portions 9 on both left and right sides thereof. And the backrest part 10 is provided in the rear part. These can be integrally formed of a resin material as appropriate as the seat body 2. Further, the backrest portion 10 is provided so that the headrest 11 can be raised and lowered so that the height can be adjusted, and the headrest 11 can be stored inside the backrest portion 10 and the handrail portion 9 in a lowered state. ing.

座面5は、幼児の臀部を面で支承すべく、左右方向に幅広な上面を具備して形成されている。股鞍部6は、座面5に着座した幼児の左右大腿部を左右振り分け状に下げ降ろすべく、座面5の前方から左右対称な凹状の湾曲面12を介して先細り状に、座面5の前部で左右両側を内向きに均等に括れさせながら前方へ突出するように形成されている。これら座面5と股鞍部6との間には視覚的に区別できるような区切りはなく、平面視では、図7に示すように、銀杏の葉形を思わせるような形状を呈したものとなっている。   The seat surface 5 is formed with an upper surface that is wide in the left-right direction so as to support the infant's buttocks on the surface. The crotch portion 6 is tapered from the front of the seat surface 5 through a concave curved surface 12 symmetrical to the left and right sides so as to lower and lower the left and right thighs of the infant seated on the seat surface 5 in a laterally distributed manner. The left and right sides of the front part are formed so as to protrude forward while being equally bound inward. There is no visually distinguishable separation between the seating surface 5 and the crotch portion 6, and in a plan view, as shown in FIG. 7, it has a shape reminiscent of a ginkgo leaf shape. It has become.

なお、股鞍部6において座面5の前部を括らせた形状とは、体重の大半を座面5に預けた状態で座った幼児が、座面5の前縁に相当する各湾曲面12に左右大腿部の太股裏面を強く圧迫させることなく、無理のない自然な姿勢として、膝が座面5よりも低位置となるように左右振り分け状に足(脚)を下げ降ろす(垂らす)ことができるように、内側へ凹ませていることを表現したものである。   It should be noted that the shape in which the front portion of the seating surface 5 is constricted in the crotch portion 6 means that each of the curved surfaces 12 corresponding to the front edge of the seating surface 5 when an infant sitting with most of the weight on the seating surface 5 is used. Lower the legs (legs) down and down (hang down) so that the knee is positioned lower than the seat surface 5 as a natural posture without squeezing the back of the thighs of the left and right thighs. It expresses that it is dented inward so that it can be.

これにより幼児は、臀部のみを座面5に安定して支承されたまま股鞍部6を跨ぎ、幼児の会陰部が股鞍部6で支承される姿勢が保持できる。
要するに、幼児は、その臀部を座面5に乗せ、左右凹状の湾曲面12の前方と股鞍部6の左右側方に形成される上下方向の空間を通じて、大腿部以下の部分を下げ降ろして、足先を足載せ部8上に置くという乗車姿勢をとることができるので、座面5の前後寸法が、幼児の下半身のうち臀部のみが載せられる程度あれば十分となる。
As a result, the infant can straddle the crotch part 6 with only the buttocks supported on the seat surface 5, and can maintain the posture in which the infant's perineum is supported by the crotch part 6.
In short, the infant places the buttocks on the seat surface 5 and lowers the lower part of the thigh through the vertical space formed in front of the left and right concave curved surfaces 12 and the left and right sides of the crotch part 6. Since it is possible to take the riding posture of placing the toes on the footrest portion 8, it is sufficient that the front and rear dimensions of the seating surface 5 are such that only the buttocks of the lower body of the infant can be placed.

また、図8に示すように、股鞍部6は、その正面断面形状が上凸となる湾曲形状(倒立U字状)に形成されており、これによって幼児は股鞍部6を跨ぐ姿勢が一層、容易となっている。更に、図1及び図3に示すように、股鞍部6の前部には、前方に迫り上がり状となった股当部6fが設けられており、この股当部6fが図2及び図7の平面視で明らかなように、前方向へ曲面を描いて左右拡がり状となっていることと相俟って、前傾姿勢気味で着座した幼児の股を支承して優しくサポートすることが可能となっている。   Further, as shown in FIG. 8, the crotch portion 6 is formed in a curved shape (inverted U-shape) in which the front cross-sectional shape is convex upward, whereby the infant has a posture that straddles the crotch portion 6. It has become easy. Further, as shown in FIGS. 1 and 3, a front portion of the crotch portion 6 is provided with a crotch portion 6f that is pushed forward, and this crotch portion 6f is shown in FIGS. As can be seen in the plan view of this, it is possible to support and gently support the crotch of an infant seated in a forward leaning posture, coupled with the fact that it has a curved surface in the forward direction and expands left and right It has become.

そして、これら座面5及び股鞍部6には、適宜クッション材13を取り付けておくのが好ましく、本実施形態では、座面5及び股当部6fを含む股鞍部6だけでなく、以下に説明する足載せ支持部7の側方支持部7bも下方へ延長されたクッション材13で覆われている。
次に、足載せ支持部7は、股鞍部6の左右両側に振り分け配置されたものであって、本実施形態では、座面5の各湾曲面12から連続して延長された後方支持部7aと、股鞍部6の左右から連続して延長された側方支持部7bを有している。そして、この側方支持部7bは、股鞍部6が呈する上凸湾曲形状の左右両裾を下方へ延長させるようにして形成されて、股鞍部6の上周面から連続して股鞍部6の左右外方へ曲面を描いて膨らむ膨出面14が形成されている。なお、ここで言う「延長」とは一体成形に限定したものではなく、上凸の湾曲ラインをそのまま下方へ延ばしたライン(輪郭線)を有している点を表現したものであり、足載せ支持部7は股鞍部6を含む座席本体2と別体に形成することも可能である。
And it is preferable to attach the cushioning material 13 to the seat surface 5 and the crotch portion 6 as appropriate. In this embodiment, not only the crotch portion 6 including the seat surface 5 and the crotch portion 6f but also the following description will be given. The side support portion 7b of the footrest support portion 7 is also covered with a cushion material 13 extended downward.
Next, the footrest support portions 7 are distributed on the left and right sides of the crotch portion 6, and in this embodiment, the rear support portions 7 a that are continuously extended from the curved surfaces 12 of the seat surface 5. The side support part 7b extended continuously from right and left of the crotch part 6 is provided. And this side support part 7b is formed so that the right and left hems of the upward convex curve shape which the crotch part 6 exhibits may be extended downward, and from the upper peripheral surface of the crotch part 6, the crotch part 6 is continuously formed. A bulging surface 14 is formed that bulges in a curved manner to the left and right outwards. The term “extension” here is not limited to integral molding, but represents a point having a line (contour line) obtained by extending an upwardly convex curved line as it is. The support portion 7 can be formed separately from the seat body 2 including the crotch portion 6.

また、各足載せ支持部7の後方支持部7aには、下げ降ろされた幼児の足の外側部分を保護する外側保護部7cが、各側方支持部7bに対面して設けられている。なお、この外側保護部7cは、本実施形態では、幼児の足の外側部分の全体を保護するように、後述する手すり部9から連続して形成されているが、幼児の足の外側部分の一部のみを保護すべく、例えば足載せ部8の外側方の部分のみに設けることもできる。   Further, the rear support portion 7a of each footrest support portion 7 is provided with an outer protection portion 7c that protects the outer portion of the infant's foot that has been lowered, facing each side support portion 7b. In this embodiment, the outer protection portion 7c is formed continuously from the handrail portion 9 to be described later so as to protect the entire outer portion of the infant's foot. In order to protect only a part, for example, it can be provided only on the outer portion of the footrest 8.

このように、本実施形態において足載せ支持部7は、幼児の内股に接触する側方支持部7bだけでなく、幼児の両足を背後から覆う後方支持部7a、幼児の両足の外側面を覆う外側保護部7cを有したものとしてある。
なお、この足載せ支持部7は、取付部3との関係で、自転車4のハンドルステム15における旋回軸(ハンドルを操舵するときの操舵軸心)、即ち、ヘッドチューブ16から前フォーク17にかけた左右両脇に沿うように設定されており、足載せ支持部7の下端部には足載せ部8が設けられている。この足載せ部8は、自転車4のハンドルステム15より前方に装着される前カゴ18に対し、それより後方配置となり、前カゴ18とは接触干渉することがないように設定されている。
Thus, in this embodiment, the footrest support portion 7 covers not only the side support portions 7b that contact the infant's inner crotch, but also the rear support portion 7a that covers both feet of the infant from the back, and the outer side surfaces of both feet of the infant. The outer protection portion 7c is provided.
The footrest support portion 7 is connected to the front fork 17 from the turning shaft (steering axis when the steering wheel is steered) in the handle stem 15 of the bicycle 4 in relation to the attachment portion 3. It is set along the left and right sides, and a footrest portion 8 is provided at the lower end portion of the footrest support portion 7. The footrest 8 is disposed rearward of the front basket 18 that is mounted on the front side of the handle stem 15 of the bicycle 4 and is set so as not to contact and interfere with the front basket 18.

このような構成から、座面5に幼児を座らせると、幼児の内股が側方支持部7bの膨出面14に沿って優しく接触するといった状態が自然とつくりだされ、また幼児は足載せ部8上へ足を置き易くなる。これにより、ニーグリップの知識がない幼児に対してもこのニーグリップの実施を促すことができ、幼児は股を締めて股鞍部6乃至側方支持部7bの膨出面14を左右から挟み込むようになるから、身体のふらつきが防止され、着座安定性が高まる。   From such a configuration, when the infant is seated on the seat surface 5, a state in which the infant's inner crotch gently touches along the bulging surface 14 of the side support portion 7b is naturally created. Easier to place your foot on 8 Thus, even an infant who does not have knowledge of knee grip can be encouraged to perform this knee grip, and the infant tightens the crotch so as to sandwich the bulging surface 14 of the crotch part 6 or the side support part 7b from the left and right. As a result, the wobbling of the body is prevented and the sitting stability is increased.

次に、手すり部9は、座面5の左右両側に位置して、背凭れ部10の左右両側から前方へ向けて突設されており、手すり部9の下側前縁部が後方へ向けて抉られたカーブを有する凹部9aが形成されている。
本実施形態では、手すり部9の凹部9aにおける下側前縁部を抉るようにしたカーブをそのまま座面5の前下方へ延長させて、抉り方向とは逆反りとなるカーブを円滑且つ連続的に生じさせ(全体がS字状のカーブとなるようにし)、この逆反りのカーブで足載せ支持部7の後方支持部7aや外側保護部7cを形成させている。そのため、このように連続
したS字状カーブによって、手すり部9や足載せ支持体7に作用する負荷が均等に分散され、応力集中が起こりにくくなっている。要するに、座席本体2が全体として強度的に強い構造体となる利点があり、これを利用して成形肉厚の薄肉化、軽量化、低コスト化などに寄与できる。
Next, the handrail portion 9 is located on both the left and right sides of the seat surface 5 and protrudes forward from the left and right sides of the backrest portion 10, and the lower front edge of the handrail portion 9 faces rearward. A concave portion 9a having a curved curve is formed.
In the present embodiment, the curve that is formed so as to turn the lower front edge portion of the concave portion 9a of the handrail portion 9 is extended to the front lower side of the seat surface 5 as it is, and the curve that is reversely warped in the turning direction is smooth and continuous. The rear support portion 7a and the outer protection portion 7c of the footrest support portion 7 are formed by this reverse warping curve. For this reason, the load acting on the handrail portion 9 and the footrest support 7 is evenly distributed by the continuous S-shaped curve in this manner, and stress concentration is less likely to occur. In short, there is an advantage that the seat body 2 as a whole is a strong structural body, and this can be used to contribute to a reduction in thickness, weight reduction, cost reduction, and the like.

なお、本実施形態でいう「手すり部」とは、座席の両側に設けられる、文字通りの手すりの他、肘掛けや左右への転落防止、或いは転倒時に幼児の肩や腕を保護する為のプロテクター等の少なくとも何れか1つの目的で設けられるものを総称したものである。
次に、取付手段3は、座席本体2の股鞍部6の前部に形成された股当部6fから上方立ち上がり状に設けられた前ガード部19において、自転車4のハンドルステム15を抱持する構成とされている。
In addition, the "handrail part" as used in this embodiment is a protector for protecting the shoulder and arm of an infant at the time of a fall, in addition to a literal handrail provided on both sides of a seat, preventing armrests and falling to the left and right Are provided for the purpose of at least one of the above.
Next, the attachment means 3 holds the handle stem 15 of the bicycle 4 at the front guard portion 19 provided so as to rise upward from the crotch portion 6 f formed at the front portion of the crotch portion 6 of the seat body 2. It is configured.

即ち、取付手段3は、図2、図3及び図6に示すように、前ガード部19の前部で構成される後部側の抱持半体21と、この抱持半体21に対して着脱可能とされた前部側の抱持半体22とで構成され、これら両抱持半体21,22には、それらの左右方向中心部を上下に通り抜けるようにして、それぞれ円弧状の縦溝21a,22aが形成されている。
本実施形態では、回り止めやガタ止めの為に図4に示すようなフランジ付きの円筒を縦方向に半割りしたようなスリーブ24,24を円弧状の縦溝21a,22aに介在させて、図3に示すように、抱持半体21,22を貫通するボルト23で締結することにより、ハンドルステム15を抱きつき状に挟持し、本実施形態の幼児同乗座席1をハンドルステム15の後方とサドルSの前方との間で自転車4のハンドルステム15に対して装着できるよう構成されている。
That is, as shown in FIGS. 2, 3, and 6, the attachment means 3 includes a rear half holding body 21 formed by the front portion of the front guard portion 19, and the holding half body 21. The holding halves 22 are configured to be detachable, and both the holding halves 21 and 22 pass through the center in the horizontal direction in the vertical direction so that each of the vertical halves has an arc shape. Grooves 21a and 22a are formed.
In the present embodiment, sleeves 24, 24 such as a half-cylindered flanged cylinder as shown in FIG. 4 are interposed in the arc-shaped vertical grooves 21a, 22a to prevent rotation and backlash. As shown in FIG. 3, the handle stem 15 is clamped by fastening with the bolts 23 penetrating the holding halves 21 and 22, and the infant passenger seat 1 of the present embodiment is placed behind the handle stem 15. It is configured to be attached to the handle stem 15 of the bicycle 4 between the front of the saddle S.

なお、前ガード部19の上部には左右に突出して幼児用ハンドル部20が設けられており、幼児同乗座席1の自転車4に対する装着状態において、前ガード部19は、自転車4のハンドルステム15の上端より高く突出するように設定されており、座面5側から見るとハンドルステム15が覆われる(隠される)状態になる。これにより、ハンドルステム15に対して座面5を更に近づけて幼児同乗座席1を装着することができる。殊に本実施形態では、前ガード部19内が前方へ向けて空洞化されたものとしてあり、この空洞内にハンドルステム15の一部が嵌るようになっているので、よりハンドルステム15に対して座面5を近づけて装着することができる。   An infant handle portion 20 is provided on the upper portion of the front guard portion 19 so as to protrude left and right. When the infant passenger seat 1 is attached to the bicycle 4, the front guard portion 19 is attached to the handle stem 15 of the bicycle 4. The handle stem 15 is covered (hidden) when viewed from the seat surface 5 side. As a result, the infant riding seat 1 can be mounted with the seat surface 5 closer to the handle stem 15. Particularly in the present embodiment, the inside of the front guard portion 19 is hollowed forward, and a part of the handle stem 15 is fitted in this cavity. Thus, the seating surface 5 can be mounted close.

以上のように、幼児の臀部を支承する座面5の前方から左右対称な凹状の湾曲面12を介して先細り状に突出した股鞍部6が設けられているので、幼児は、その臀部のみを座面5に乗せ、会陰部乃至内股を股鞍部6で支承しつつ、膝部が座面5より低い位置になるようにして左右大腿部を左右凹状の湾曲面12の前方で股鞍部6の左右側方の位置に形成される上下方向の空間を通じて、凹状の湾曲面12に沿わせながら股鞍部6から左右振り分け状に下げ降ろし、足先を足載せ部8上に置くという乗車姿勢をとることができる。   As described above, since the crotch portion 6 is provided so as to project from the front of the seat surface 5 that supports the infant's buttocks via the concave curved surface 12 that is symmetrical to the left and right, the infant can only take the buttocks. Put on the seat surface 5 and support the perineum or inner crotch with the crotch portion 6, with the knees positioned lower than the seat surface 5, and the left and right thighs in front of the left and right concave curved surfaces 12. The riding posture is such that it is lowered from the crotch part 6 to the left and right side in a vertically distributed manner along the concave curved surface 12 through the vertical space formed at the left and right side positions, and the toes are placed on the footrest part 8. Can take.

従って、座面5の前後長さが幼児の臀部のみが載せられる程度の寸法があれば十分となる。また、取付手段3が股鞍部6の前部の前ガード部19において構成されるので、股鞍部6が座面5を支持する支持ステーに相当する役割と、幼児の会陰部乃至内股を支承しつつ左右大腿部を振り分けて足を下げ降ろさせてハンドル等との干渉を生じ難くするという役割を兼ねさせることができるので、結果として、幼児同乗座席を自転車のハンドルステムに対して近づけて装着することができるようになって、幼児同乗座席の後端とサドルとの間隔を可及的に広くすることができる。また、幼児同乗座席が自転車のハンドルステムに対して近づくことによって、ハンドルの操舵性も向上する。   Therefore, it is sufficient if the front and rear length of the seating surface 5 is sufficient to allow only the infant's buttocks to be placed thereon. Further, since the attachment means 3 is configured in the front guard portion 19 at the front portion of the crotch portion 6, the crotch portion 6 supports a role corresponding to a support stay that supports the seat surface 5, and supports the infant's perineum or inner crotch. While moving the left and right thighs and lowering the legs to make it less likely to interfere with the handle etc., as a result, the infant passenger seat is installed close to the bicycle handle stem The distance between the rear end of the infant passenger seat and the saddle can be made as wide as possible. In addition, the steering performance of the steering wheel is improved by bringing the infant passenger seat closer to the steering wheel stem of the bicycle.

また、幼児が自転車4のハンドルステム15を越えて両足を前方へ投げ出すことはないので、幼児の載せ降ろしは、持ち上げた幼児を座面5上方で単純に上下動させるだけで行えるものとなり、円滑且つ容易である。
更に、各足載せ支持部7は、座面5の各湾曲面12から連続する後方支持部7aと、股鞍部6の左右から連続する側方支持部7bを有し、この各側方支持部7bには、股鞍部6の左右外方へ膨らむ膨出面14が設けられているので、幼児の内股が、各側方支持部7bの膨出面14に接触する状態を自然につくりだすことができ、股を締めて股鞍部6や各側方支持部7bの膨出面14を左右から挟み込んで身体のふらつきを防止するニーグリップ
の姿勢をとることを幼児に対して自然に促すことができる。このことは、座面5の前部が左右から括れさせたような股鞍部6となっていることを補って、幼児の着座安定性を高めることができる。また、各足載せ支持部7が後方支持部7aと側方支持部7bで構成されるので、各足載せ支持部7が強度的にも有利であり、外側保護部7cは、左右振り分け状に垂下された幼児の両足の外側面を保護することができる。なお、この外側保護部7cは、前記手すり部9の凹部9aから連続するように形成されているので、背凭れ部10及び各足載せ支持部7が強度的にも優れたものとなる。
In addition, since the infant does not throw out both feet forward beyond the handle stem 15 of the bicycle 4, the infant can be loaded and unloaded simply by moving the lifted infant simply up and down above the seat surface 5. And easy.
Furthermore, each footrest support portion 7 has a rear support portion 7a that is continuous from each curved surface 12 of the seat surface 5 and a side support portion 7b that is continuous from the left and right of the crotch portion 6, and each of these side support portions. 7b is provided with a bulging surface 14 that bulges to the left and right outwards of the crotch portion 6, so that it is possible to naturally create a state where the inner crotch of the infant contacts the bulging surface 14 of each side support portion 7b. It is possible to naturally encourage an infant to take a knee grip posture to tighten the crotch and sandwich the bulging surface 14 of the crotch part 6 and each side support part 7b from the left and right to prevent the body from wobbling. This can compensate for the fact that the front portion of the seat surface 5 is a crotch portion 6 that is constricted from the left and right, and can improve the sitting stability of the infant. Further, since each footrest support portion 7 is composed of a rear support portion 7a and a side support portion 7b, each footrest support portion 7 is advantageous in terms of strength, and the outer protection portion 7c is arranged in a left-right distribution manner. It can protect the outer surface of both legs of a suspended infant. In addition, since this outer side protection part 7c is formed so that it may continue from the recessed part 9a of the said handrail part 9, the backrest part 10 and each footrest support part 7 will be excellent also in intensity | strength.

図9は、本発明の第2実施形態の幼児同乗座席1の斜視図である。この第2実施形態の第1実施形態と異なる点は、手すり部9の凹部9aにおける下部前縁部を抉るようにしたカーブが、凹状の湾曲面12の下側に連続しており、足載せ支持部7には、第1実施形態の後方支持部7aや外側保護部7cに相当する部分が設けられていない点であり、第1実施形態と同様の部分は同一符号を付して詳細な説明は省略する。   FIG. 9 is a perspective view of the infant passenger seat 1 according to the second embodiment of the present invention. The second embodiment is different from the first embodiment in that a curve that covers the lower front edge of the concave portion 9a of the handrail portion 9 is continuous below the concave curved surface 12, The support portion 7 is not provided with portions corresponding to the rear support portion 7a and the outer protection portion 7c of the first embodiment, and the same portions as those of the first embodiment are denoted by the same reference numerals and detailed. Description is omitted.

図10は、本発明の第3実施形態の幼児同乗座席1の斜視図である。この第3実施形態の第1実施形態と異なる点は、手すり部9に凹部9aが設けられておらず、手すり部9の外縁ラインがそのまま足載せ支持部7の外側保護部7cに連続している点であり、第1実施形態と同様の部分は同一符号を付して詳細な説明は省略する。
ところで、本発明は、上記実施形態に限定されるものではなく、実施の形態に応じて適宜変更可能である。
FIG. 10 is a perspective view of the infant passenger seat 1 according to the third embodiment of the present invention. The difference of the third embodiment from the first embodiment is that the handrail portion 9 is not provided with a recess 9a, and the outer edge line of the handrail portion 9 continues to the outer protection portion 7c of the footrest support portion 7 as it is. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
By the way, this invention is not limited to the said embodiment, It can change suitably according to embodiment.

例えば、座面5や股鞍部6及び手すり部9等について、それらの細部形状は、殊更詳細に限定されるものではない。その他、座面5の後部に設ける背凭れ部10の形状、ヘッドレスト11の形状、ヘッドレスト11の昇降機構の有無などは何ら限定されるものではない。   For example, the detailed shape of the seat surface 5, the crotch part 6, the handrail part 9, and the like is not particularly limited. In addition, the shape of the backrest part 10 provided in the rear part of the seat surface 5, the shape of the headrest 11, the presence / absence of the lifting mechanism of the headrest 11 and the like are not limited at all.

1 幼児同乗座席
2 座席本体
3 取付手段
4 自転車
5 座面
6 股鞍部
7 足載せ支持部
8 足載せ部
12 湾曲面
15 ハンドルステム
DESCRIPTION OF SYMBOLS 1 Infant seat 2 Seat main body 3 Attachment means 4 Bicycle 5 Seat surface 6 Crotch part 7 Footrest support part 8 Footrest part 12 Curved surface 15 Handle stem

Claims (4)

自転車(4)のハンドルステム(15)の後方とサドル(S)の前方との間に配置される自転車用幼児同乗座席において、
座席本体(2)とこの座席本体(2)を自転車(4)へ装着する取付手段(3)とを有し、
前記座席本体(2)は、着座させる幼児の臀部と左右大腿部とのうち臀部のみを支承する座面(5)と、この座面(5)に着座した幼児の会陰部乃至内股を支承しつつ左右大腿部を左右振り分け状に下げ降ろす股鞍部(6)と、下げ降ろされた幼児の足を載せる足載せ部(8)を有する足載せ支持部(7)を備え
前記取付手段(3)は前記股鞍部(6)の前部に設けられており、
前記座席本体(2)の股鞍部(6)は、前記座面(5)の前部を左右対称な凹状の湾曲面(12)で括らせながら先細り状に突出させた形状であって且つ前記湾曲面(12)の前方に対して前記座面(5)よりも幼児の膝部が低くなるように大腿部を下げ降ろす上下方向の空間を形成させている
ことを特徴とする自転車用幼児同乗座席。
In the infant seat for bicycles arranged between the rear of the handle stem (15) of the bicycle (4) and the front of the saddle (S),
A seat body (2) and attachment means (3) for mounting the seat body (2) to the bicycle (4);
The seat body (2) supports a seat surface (5) for supporting only the buttocks of the infant to be seated and the left and right thighs, and a perineum or inner thigh of the infant seated on the seat surface (5). provided with a crotch saddle unloading lowered lateral thigh lateral distribution shape (6), the supporting portion footrest with footrest mounting the lower unloaded infants legs (8) and (7),
The attachment means (3) is provided in the front part of the crotch part (6),
The crotch part (6) of the seat body (2) has a shape protruding in a tapered manner while constricting the front part of the seating surface (5) with a symmetrical concave curved surface (12), and An infant for a bicycle characterized by forming a vertical space for lowering and lowering the thigh so that the knee of the infant is lower than the seat surface (5) with respect to the front of the curved surface (12) Passenger seat.
前記足載せ支持部(7)は、前記座席本体(2)の股鞍部(6)から下方に向けて左右振り分け状に設けられた側方支持部(7b)を有し、この各側方支持部(7b)には、前記股鞍部(6)の左右外側方向へ膨らむ膨出面(14)が設けられていることを特徴とする請求項1に記載の自転車用幼児同乗座席。   The footrest support portion (7) has a side support portion (7b) provided in a left-right distributed manner downward from the crotch portion (6) of the seat body (2). The infant seat for riding a bicycle according to claim 1, characterized in that the part (7b) is provided with a bulging surface (14) that bulges in the laterally outward direction of the crotch part (6). 前記足載せ支持部(7)は、前記座席本体(2)の座面(5)の各湾曲面(12)から連続した後方支持部(7a)を有し、この各後方支持部(7a)には、下げ降ろされた幼児の足の外側部分を保護する外側保護部(7c)が設けられていることを特徴とする請求項1又は請求項2に記載の自転車用幼児同乗座席。   The footrest support portion (7) has a rear support portion (7a) continuous from each curved surface (12) of the seat surface (5) of the seat body (2), and each rear support portion (7a). The infant passenger seat for bicycles according to claim 1 or 2, further comprising an outer protection portion (7c) for protecting an outer portion of the infant's foot that is lowered. 前記股鞍部(6)の前部には、前方へ迫り上がり状とされた股当部(6f)が設けられていることを特徴とする請求項1〜請求項3の何れか1項に記載の自転車用幼児同乗座席。   The front part of the crotch part (6) is provided with a crotch part (6f) which is formed in a front-up shape, according to any one of claims 1 to 3. Infant seat for bicycles.
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JP5601975B2 (en) * 2010-11-04 2014-10-08 パナソニック株式会社 Bicycle with child carrying device
JP5808228B2 (en) * 2011-11-11 2015-11-10 株式会社ベルニクス Child seat and device for attaching the child seat to a bicycle
JP7051126B2 (en) * 2019-10-04 2022-04-11 コンビ株式会社 Children's seat for bicycle

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JP2004168226A (en) * 2002-11-21 2004-06-17 Grk Kk Basket body supporting frame for bicycle and basket body mounted on the same
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