JP2020055406A - Folded tricycle - Google Patents

Folded tricycle Download PDF

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JP2020055406A
JP2020055406A JP2018186901A JP2018186901A JP2020055406A JP 2020055406 A JP2020055406 A JP 2020055406A JP 2018186901 A JP2018186901 A JP 2018186901A JP 2018186901 A JP2018186901 A JP 2018186901A JP 2020055406 A JP2020055406 A JP 2020055406A
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frame portion
body frame
vehicle body
bending mechanism
saddle
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JP7178694B2 (en
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範光 中井
Norimitsu Nakai
範光 中井
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Abstract

To provide a folded tricycle which effectively utilizes an inner angle side space sandwiched between a vehicle body frame part and a rear frame part to make the tricycle in a folded state which is compact as a whole.SOLUTION: A handle part 40 having a front wheel 30 is provided at a front frame part 20, and a first bending mechanism, which rotates a front portion in a manner that the front portion is bent relative to a rear portion to place the front portion in a storage position, is provided at a vehicle body frame part 10. The first bending mechanism causes the front wheel 30 to enter into an inner angle side space between the vehicle body frame part 10 and a rear frame part 50 in the storage position.SELECTED DRAWING: Figure 9

Description

本発明は、幼児用として好適な折畳み三輪車に関するものである。   TECHNICAL FIELD The present invention relates to a folding tricycle suitable for infants.

従来、この種の発明には、例えば特許文献1に記載されるように、前後方向へわたるメインフレーム部と、前記メインフレーム部の前端側に枢支されて上下方向へ延設された前フレームと、前記前フレームの下端側に回転自在に支持された前輪と、前記前フレームの上端側に接続されて車幅方向へ延設された操行ハンドルと、前記メインフレーム部の後端側に枢支されて下方へ延設された後フレームと、後フレーム部の下端側に接続されて車幅方向へ延設された後輪軸部と、前記後輪軸部の両端側で回転自在な後輪と、前記メインフレームに支持されたサドルとを備えた三輪車がある。   Conventionally, this type of invention includes a main frame portion extending in the front-rear direction and a front frame pivotally supported on the front end side of the main frame portion and extending vertically as described in Patent Document 1, for example. A front wheel rotatably supported at a lower end of the front frame, an operation handle connected to an upper end of the front frame and extending in a vehicle width direction, and a pivot at a rear end of the main frame portion. A rear frame supported and extended downward, a rear wheel axle portion connected to the lower end of the rear frame portion and extended in the vehicle width direction, and a rear wheel rotatable at both ends of the rear wheel axle portion. And a saddle supported by the main frame.

特開2006−82777号公報(図9参照)JP 2006-82777 A (see FIG. 9)

ところで、前記従来の三輪車を折畳む際は、メインフレーム前側の枢支部を支点にしてメインフレームを上方へ回動させながら、後フレーム上端の枢支部を支点にして後フレームを前方へ回動させるようにして折畳み操作が行われる。
そして、折畳み後は、前輪と後輪が近接し、これら前後輪の上方側にサドル及びメインフレームが直立状に位置するが、その折畳み構造が複雑なのに加え、全体の体積が大きく感じられる場合があり、改善が求められている。
By the way, when folding the conventional tricycle, the main frame is rotated upward with the pivot at the front side of the main frame as a fulcrum, and the rear frame is pivoted forward with the pivot at the upper end of the rear frame as a fulcrum. The folding operation is performed as described above.
After folding, the front wheel and the rear wheel are close to each other, and the saddle and the main frame are located upright on the upper side of these front and rear wheels, but in addition to the complicated folding structure, the whole volume may be felt large. Yes, improvements are required.

このような課題に鑑みて、本発明は、以下の構成を具備するものである。
前後方向へわたる車体フレーム部と、前記車体フレーム部の前端側に交差状に接続されて上下に延設された前フレーム部と、前記前フレーム部の下端側に回転自在に支持された前輪と、前記前フレーム部の上端側に接続されて車幅方向へ延設されたハンドル部と、前記車体フレーム部の後端側で下方へ延設された後フレーム部と、前記後フレーム部の下端側に接続されて車幅方向へ延設された後輪軸部と、前記後輪軸部の両端側で回転自在な後輪と、前記車体フレーム部に支持されたサドルとを備えた三輪車であって、前記車体フレーム部には、前側部位を後側部位に対し折り曲げるように回動させて収納位置にする第一の折曲機構が設けられ、前記第一の折曲機構は、前記収納位置にて、前記前輪を前記車体フレーム部と前記後フレーム部の内角側の空間に入り込ませることを特徴とする三輪車。
In view of such a problem, the present invention has the following configuration.
A vehicle body frame portion extending in the front-rear direction, a front frame portion connected to the front end side of the vehicle body frame portion in a cross shape and extending vertically, and a front wheel rotatably supported at a lower end side of the front frame portion. A handle portion connected to an upper end of the front frame portion and extending in the vehicle width direction; a rear frame portion extending downward at a rear end side of the vehicle body frame portion; and a lower end of the rear frame portion A three-wheeled vehicle comprising: a rear wheel axle portion connected to the vehicle side and extending in the vehicle width direction; a rear wheel rotatable at both ends of the rear wheel axle portion; and a saddle supported by the vehicle body frame portion. The vehicle body frame portion is provided with a first bending mechanism which is turned to bend a front part with respect to a rear part to a storage position, and wherein the first bending mechanism is in the storage position. And the front wheels are connected to the body frame portion and the rear frame portion. Tricycle for causing enter the space of the inner angle side.

本発明は、以上説明したように構成されているので、車体フレーム部と後フレーム部に挟まれた内角側の空間を有効に利用して、全体的にコンパクトな折畳み状態にすることができる。   Since the present invention is configured as described above, it is possible to make a folded state as a whole by effectively utilizing the space on the inner corner side sandwiched between the body frame portion and the rear frame portion.

本発明に係る三輪車の一例を示す斜視図である。It is a perspective view showing an example of a tricycle concerning the present invention. 同三輪車の側面図であり、サドル及び下カバーを外した状態を示す。It is a side view of the same tricycle, and shows a state where a saddle and a lower cover have been removed. 同三輪車の被覆部材および下カバーを示す斜視図である。FIG. 3 is a perspective view showing a covering member and a lower cover of the tricycle. 第一の折曲機構の一例を示す分解斜視図である。It is an exploded perspective view showing an example of the first bending mechanism. 同三輪車が折り畳まれようとしている状態を示す側面図である。It is a side view which shows the state in which the tricycle is about to be folded. 第一の折曲機構の作用を示す側面図であり、(a)は初期状態、(b)は係止状態が解除された状態、(c)は折り畳まれた状態をそれぞれ示す。It is a side view which shows the effect | action of a 1st bending mechanism, (a) shows an initial state, (b) shows the state where the locking state was released, and (c) shows the state which was folded, respectively. 第二の折曲機構を折畳み動作させるために、ロック機構を解除操作している状態を示す正面図である。FIG. 11 is a front view showing a state where a lock mechanism is being released to perform a folding operation of a second folding mechanism. 第二の折曲機構の作用を示す側面図であり、(a)は初期状態、(b)は係止状態が解除された状態、(c)は折り畳まれた状態をそれぞれ示す。It is a side view which shows the effect | action of a 2nd bending mechanism, (a) shows an initial state, (b) shows the state where the locking state was released, and (c) shows the state which was folded, respectively. 同三輪車が折り畳まれた状態を示す斜視図である。It is a perspective view showing the state where the same tricycle was folded.

本実施の形態では、以下の特徴を開示している。
第1の特徴は、前後方向へわたる車体フレーム部と、前記車体フレーム部の前端側に交差状に接続されて上下に延設された前フレーム部と、前記前フレーム部の下端側に回転自在に支持された前輪と、前記前フレーム部の上端側に接続されて車幅方向へ延設されたハンドル部と、前記車体フレーム部の後端側で下方へ延設された後フレーム部と、前記後フレーム部の下端側に接続されて車幅方向へ延設された後輪軸部と、前記後輪軸部の両端側で回転自在な後輪と、前記車体フレーム部に支持されたサドルとを備えた三輪車であって、前記車体フレーム部には、前側部位を後側部位に対し折り曲げるように回動させて収納位置にする第一の折曲機構が設けられ、前記第一の折曲機構は、前記収納位置にて、前記前輪を前記車体フレーム部と前記後フレーム部の内角側の空間に入り込ませる(図5及び図9参照)。
In the present embodiment, the following features are disclosed.
The first feature is that a body frame portion extending in the front-rear direction, a front frame portion connected to the front end side of the body frame portion in a cross shape and extending vertically, and rotatable at a lower end side of the front frame portion A front wheel supported by the front frame portion, a handle portion connected to the upper end side of the front frame portion and extending in the vehicle width direction, and a rear frame portion extending downward at the rear end side of the vehicle body frame portion, A rear wheel axle portion connected to the lower end of the rear frame portion and extending in the vehicle width direction, a rear wheel rotatable at both ends of the rear wheel axle portion, and a saddle supported by the vehicle body frame portion. A three-wheeled vehicle provided with a first folding mechanism provided in the vehicle body frame portion, the first folding mechanism being rotated to bend a front portion with respect to a rear portion to a storage position, and the first folding mechanism is provided. The front wheel is in front of the vehicle body frame in the stowed position. To enter the inner angle side of the space of the rear frame section (see FIGS. 5 and 9).

第二の特徴として、誤操作の少ない良好な折畳み操作性を得るために、前記第一の折曲機構は、前記前側部位を通常使用位置で係止状態にし、この係止状態を操作部の操作によって解除して、前記前側部位を前記収納位置に回動させるように構成され、前記操作部は、前記サドルの着座部よりも後側に設けられている(図5及び図6参照)。
なお、この構成によれば、上記した第一の特徴を一部含まない独立した発明とした場合でも、誤操作の少ない良好な折畳み操作性を得ることが可能である。
As a second feature, in order to obtain good folding operability with less erroneous operation, the first folding mechanism locks the front side portion at a normal use position, and changes the locked state to an operation portion of an operation unit. , And the front part is rotated to the storage position, and the operation unit is provided behind the seating part of the saddle (see FIGS. 5 and 6).
According to this configuration, even in the case of an independent invention that does not partially include the above-described first feature, it is possible to obtain good folding operability with few erroneous operations.

第三の特徴は、手等が前記第一の折曲機構に触れないように、前記第一の折曲機構を覆う可撓性の被覆部材を備え、前記被覆部材は、前記前側部位の回動の前後で、前記第一の折曲機構を覆うように撓み変形する(図2,図3及び図6参照)。   A third feature includes a flexible covering member that covers the first folding mechanism so that a hand or the like does not touch the first folding mechanism, and the covering member is configured to rotate the front side portion. Before and after the movement, it is bent and deformed so as to cover the first bending mechanism (see FIGS. 2, 3 and 6).

第四の特徴は、省スペースな収納性を得る態様として、車幅方向両側の前記後輪と前記サドルの後端とが被載置面に三点で接触して自立するように、前記サドルの後端位置を設定した(図9参照)。
なお、この構成によれば、上記した第一〜第三の特徴を一部含まない独立した発明とした場合も、省スペースな収納性を得ることが可能である。
A fourth feature is that, as a mode for obtaining space-saving storage, the saddle is configured such that the rear wheels on both sides in the vehicle width direction and the rear end of the saddle come into contact with the mounting surface at three points and become self-supporting. (See FIG. 9).
According to this configuration, even in the case of an independent invention that does not partially include the above-described first to third features, it is possible to obtain space-saving storability.

第五の特徴は、よりコンパクトな収納性を得るために、前記前フレーム部における前記車体フレーム部との接続箇所よりも上側には、ハンドル部側を折り曲げるように後方へ回動させる第二の折曲機構が設けられている(図8参照)。
なお、この構成によれば、上記した第一〜第四の特徴を一部含まない独立した発明とした場合も、ハンドル部側において省スペースな収納性を得ることが可能である。
The fifth feature is that, in order to obtain a more compact storage, above the connection point with the vehicle body frame portion in the front frame portion, the handle portion side is turned rearward so as to bend the second side. A bending mechanism is provided (see FIG. 8).
According to this configuration, even in the case of an independent invention that does not partially include the above-described first to fourth features, it is possible to obtain space-saving storability on the handle portion side.

第六の特徴は、ハンドル部が意図せずに折り畳まれてしまうのを防ぐために、ハンドル部側の後方への回動をロックし、このロック状態を所定の操作により解除するロック機構を備えている(図7及び図8参照)。   A sixth feature is to provide a lock mechanism that locks the handle portion side from turning rearward and releases the locked state by a predetermined operation in order to prevent the handle portion from being unintentionally folded. (See FIGS. 7 and 8).

<具体的実施態様>
次に、上記特徴を有する具体的な実施態様について、図面に基づいて詳細に説明する。なお、以下の説明では、同一または相当する構成要素について同一符号を付することで、重複する説明を省略する。
<Specific embodiment>
Next, specific embodiments having the above features will be described in detail with reference to the drawings. In the following description, the same or corresponding components will be denoted by the same reference symbols, without redundant description.

三輪車1は、前後方向へわたる車体フレーム部10と、車体フレーム部10の前端側に交差状に接続されて上下に延設された前フレーム部20と、前フレーム部20の下端側に回転自在に支持された前輪30と、前フレーム部20の上端側に接続されて車幅方向へ延設されたハンドル部40と、車体フレーム部10の後端側で下方へ延設された後フレーム部50と、後フレーム部50の下端側に接続されて車幅方向へ延設された後輪軸部60と、後輪軸部60の両端側で回転自在な左右の後輪70,70と、車体フレーム部10に支持されたサドル80とを具備している(図1〜図2参照)。   The tricycle 1 includes a body frame 10 extending in the front-rear direction, a front frame 20 connected to the front end of the body frame 10 in an intersecting manner and extending vertically, and a lower end of the front frame 20 rotatable. , A handle portion 40 connected to the upper end side of the front frame portion 20 and extending in the vehicle width direction, and a rear frame portion extending downward at the rear end side of the body frame portion 10 50; a rear wheel axle 60 connected to the lower end of the rear frame 50 and extending in the vehicle width direction; left and right rear wheels 70, 70 rotatable at both ends of the rear wheel axle 60; And a saddle 80 supported by the unit 10 (see FIGS. 1 and 2).

車体フレーム部10、前フレーム部20、ハンドル部40、後フレーム部50、及び後輪軸部60等は、例えば、硬質金属材料からなる中空のパイプ材により形成される。   The body frame portion 10, the front frame portion 20, the handle portion 40, the rear frame portion 50, the rear wheel shaft portion 60, and the like are formed of, for example, a hollow pipe material made of a hard metal material.

車体フレーム部10は、略水平に直線状に延設された水平状フレーム部11(図2参照)と、この水平状フレーム部11の前端側から前方斜め上方へ傾斜する傾斜フレーム部12とを有する。
この車体フレーム部10の後端側には、後フレーム部50が一体に接続されている。なお、他例としては、後フレーム部50を車体フレーム部10とは別体の部材とすることも可能である。
The vehicle body frame portion 10 includes a horizontal frame portion 11 (see FIG. 2) extending substantially horizontally and linearly, and an inclined frame portion 12 which is inclined obliquely upward and forward from the front end side of the horizontal frame portion 11. Have.
A rear frame portion 50 is integrally connected to a rear end side of the vehicle body frame portion 10. As another example, the rear frame portion 50 can be a member separate from the vehicle body frame portion 10.

水平状フレーム部11は、傾斜フレーム部12を有する前側部位11aと、後フレーム部50を一体に有する後側部位11bとに分割されており(図4参照)、これら前側部位11aと後側部位11bの間には、前側部位11aを後側部位11bに対し折り曲げるように回動させて収納位置にする第一の折曲機構Aが設けられる。   The horizontal frame portion 11 is divided into a front portion 11a having an inclined frame portion 12 and a rear portion 11b integrally having a rear frame portion 50 (see FIG. 4), and these front portion 11a and rear portion are provided. A first bending mechanism A is provided between 11b so that the front portion 11a is rotated to bend with respect to the rear portion 11b to be in the storage position.

第一の折曲機構Aは、水平状フレーム部11の前側部位11aを、通常使用位置(図6(a)参照)で係止しており、この係止状態を操作部17aの引張り操作によって解除して、同前側部位11aを収納位置側(図6(c)参照)へ回動させる。   The first bending mechanism A locks the front portion 11a of the horizontal frame portion 11 at the normal use position (see FIG. 6A), and changes this locked state by pulling the operation portion 17a. Then, the front part 11a is rotated toward the storage position (see FIG. 6C).

ここで、前記通常使用位置とは、三輪車1の走行を可能にすべく、前側部位11aが後側部位11bに対し直線状になった位置を意味する。
また、前記収納位置とは、前輪30を水平状フレーム部11と後フレーム部50の内角側の空間S1に入り込むまで、前側部位11aが後側部位11bに対し下方へ回動した位置を意味する。
Here, the normal use position means a position where the front portion 11a is linear with respect to the rear portion 11b so that the tricycle 1 can travel.
The storage position means a position where the front part 11a is rotated downward with respect to the rear part 11b until the front wheel 30 enters the space S1 on the inner corner side of the horizontal frame part 11 and the rear frame part 50. .

第一の折曲機構Aの構造について詳細に説明すれば、この第一の折曲機構Aは、図4及び図6に示すように、前側部位11aを後側部位11bに対し回動させる第一の枢支部a1と、後側部位11bに固定された支持部材a2と、支持部材a2に沿って後方へスライド可能なスライド部材a3と、前側部位11aの後端側に接続された枢支ブラケットa4と、スライド部材a3によって係脱可能に係止される係脱突起a5とを備えている。   The structure of the first bending mechanism A will be described in detail. As shown in FIGS. 4 and 6, the first bending mechanism A rotates the front portion 11a with respect to the rear portion 11b. One pivot portion a1, a support member a2 fixed to the rear portion 11b, a slide member a3 slidable backward along the support member a2, and a pivot bracket connected to the rear end of the front portion 11a. a4, and an engagement / disengagement projection a5 which is engaged and disengaged by the slide member a3.

第一の枢支部a1は、支持部材a2および枢支ブラケットa4に挿通された円柱状の軸であり、支持部材a2に対し、枢支ブラケットa4及び前側部位11aを回転自在に支持する。   The first pivotal support part a1 is a columnar shaft inserted through the support member a2 and the pivotal support bracket a4, and rotatably supports the pivotal support bracket a4 and the front part 11a with respect to the support member a2.

支持部材a2は、前後方向へわたって下方を開口した断面凹状の部材であり、水平状フレーム部11の後側部位11bに固定されるとともに、後側部位11bから前方へ延設されている。
この支持部材a2の両側の側壁には、第一の枢支部a1が貫通状に支持され、第一の枢支部a1よりも前側に、切欠状のガイド部a21を有する。このガイド部a21は、第一の枢支部a1を中心にした円弧状の切欠であり、下方側を開口している(図4参照)。また、支持部材a2の天壁の前端側には、付勢部材a6(図示例によれば、引張コイルバネ)の前端部を係止するための係止部a22が上方向きに突出している。
The support member a2 is a member having a concave cross section that opens downward in the front-rear direction, and is fixed to the rear portion 11b of the horizontal frame portion 11 and extends forward from the rear portion 11b.
A first pivotal support a1 is supported in a penetrating manner on both side walls of the support member a2, and has a notched guide portion a21 in front of the first pivotal support a1. The guide portion a21 is an arc-shaped notch centered on the first pivotal support portion a1, and has an open lower side (see FIG. 4). At the front end side of the top wall of the support member a2, a locking portion a22 for locking the front end of the biasing member a6 (in the illustrated example, a tension coil spring) protrudes upward.

スライド部材a3は、前後方向へわたって下方を開口した断面凹状の部材であり、支持部材a2の上面及び両側面に重ね合わせられるようにして装着される。そして、このスライド部材a3は、支持部材a2に対し後方へスライド可能であり、付勢部材a6によって、支持部材a2に相対し前方へ付勢される(図6参照)。
なお、このスライド部材a3は、図示例によれば、組み立て性等を考慮して複数の部材から構成しているが、同様の機能が得られるようにすれば、単数の部材から構成することも可能である。
The slide member a3 is a member having a concave cross section that opens downward in the front-rear direction, and is mounted so as to be superimposed on the upper surface and both side surfaces of the support member a2. The slide member a3 is slidable rearward with respect to the support member a2, and is urged forward by the urging member a6 relative to the support member a2 (see FIG. 6).
In addition, according to the illustrated example, the slide member a3 is configured by a plurality of members in consideration of assemblability and the like. However, if the same function is obtained, the slide member a3 may be configured by a single member. It is possible.

スライド部材a3の構成する天壁には、係止部a32が上方向きに突出している。この係止部a32は、付勢部材a6の後端側を係止する(図6参照)。
また、スライド部材a3の後端側には、突片部と孔部とからなる止着部a33が設けられる。この止着部a33には、可撓性長尺部材17が止着される。
A locking portion a32 protrudes upward from the ceiling wall formed by the slide member a3. The locking portion a32 locks the rear end side of the urging member a6 (see FIG. 6).
At the rear end side of the slide member a3, a fastening portion a33 composed of a projecting piece and a hole is provided. The flexible long member 17 is fixed to the fixing portion a33.

可撓性長尺部材17は、図示例によれば、無端輪状に構成された長尺帯状の部材であり、その前端側を止着部a33に止着して、後方へ延設される。
この可撓性長尺部材17の後端側は、サドル80の後端側に遊挿され外部に露出しており、操作部17aとして機能する。図中、符号17bは、操作部17aがサドル80内に引き込まれないようにする突状の係止部である。
According to the illustrated example, the flexible elongate member 17 is an elongate band-shaped member configured in an endless ring shape, and its front end side is fastened to the fastening portion a33, and is extended rearward.
The rear end side of the flexible elongated member 17 is loosely inserted into the rear end side of the saddle 80 and is exposed to the outside, and functions as the operation unit 17a. In the drawing, reference numeral 17b denotes a projecting locking portion for preventing the operation portion 17a from being pulled into the saddle 80.

スライド部材a3の両側壁には、前後方向へ延設されるとともにその前端部を開口した切欠状のガイド部a31が設けられる。スライド部材a3は、このガイド部a31に、第一の枢支部a1及び後述する係脱突起a5を嵌め合わせた位置(図6(a)参照)と、係脱突起a5を外して第一の枢支部a1のみを嵌め合わせた位置(図6(b)参照)との間で、前後方向へスライドする。   On both side walls of the slide member a3, there are provided notched guide portions a31 extending in the front-rear direction and having an open front end. The slide member a3 has a position (see FIG. 6A) where the first pivotal support part a1 and a disengagement projection a5 described later are fitted to the guide part a31 (see FIG. 6 (a)), and the first pivot part is disengaged from the engagement projection a5. It slides in the front-rear direction between a position where only the support part a1 is fitted (see FIG. 6B).

枢支ブラケットa4は、水平状フレーム部11の前側部位11aの後端部に固定された部材であり、軸状の第一の枢支部a1を挿通し支持する貫通孔a41を有する。なお、他例としては、枢支ブラケットa4を省いて、前側部位11aの後端側に第一の枢支部a1を直接挿通した態様とすることも可能である。   The pivot bracket a4 is a member fixed to the rear end of the front portion 11a of the horizontal frame portion 11, and has a through-hole a41 that inserts and supports the first axial pivot portion a1. As another example, it is also possible to omit the pivot bracket a4 and to directly insert the first pivot portion a1 into the rear end of the front portion 11a.

係脱突起a5は、水平状フレーム部11の前側部位11aの外面から突出して、支持部材a2のガイド部a21、及びスライド部材a3のガイド部a31に係合する軸状の突起である。この係脱突起a5は、例えば、円柱状の軸状部材を前側部位11aに挿通し固定したものとすればよい。
この係脱突起a5は、支持部材a2及びスライド部材a3の二つのガイド部a21,a31に係合し(図6(a)参照)、スライド部材a3が後方へスライドし(図6(a)参照)、さらに前側部位11aが第一の枢支部a1を支点にして下方へ回動した際には、支持部材a2のガイド部a21から下方へ離脱する(図6(c)参照)。
The engagement / disengagement projection a5 is an axial projection that protrudes from the outer surface of the front side portion 11a of the horizontal frame portion 11 and engages with the guide portion a21 of the support member a2 and the guide portion a31 of the slide member a3. For example, the engagement / disengagement projection a5 may be formed by inserting a columnar shaft-like member through the front portion 11a and fixing the same.
The engagement / disengagement projection a5 engages with the two guide portions a21 and a31 of the support member a2 and the slide member a3 (see FIG. 6A), and the slide member a3 slides rearward (see FIG. 6A). When the front part 11a further pivots downward about the first pivotal support part a1, it separates downward from the guide part a21 of the support member a2 (see FIG. 6C).

また、図中、符号11a1は、後述する被覆部材15を止着するためのネジ穴(図4参照)、又はネジの頭部(図6参照)を示している。   Further, in the drawing, reference numeral 11a1 indicates a screw hole (see FIG. 4) for fixing a covering member 15 described later, or a screw head (see FIG. 6).

上記構成の第一の折曲機構Aは、可撓性の被覆部材15により覆われ、被覆部材15が上下のサドル80及び下カバー16によって覆われている(図2参照)。   The first bending mechanism A having the above configuration is covered with the flexible covering member 15, and the covering member 15 is covered with the upper and lower saddles 80 and the lower cover 16 (see FIG. 2).

被覆部材15は、通常使用位置にて第一の折曲機構Aを覆う第一の被覆態様(図6(a)参照)と、収納位置にて前記第一の折曲機構を覆う第二の被覆態様(図6(c)参照)との間、すなわち、前側部位11aの回動の前後で撓み変形する。
詳細に説明すれば、この被覆部材15は、図3に示すように、基部15aと、基部15aから上側へ延設された長尺帯状の上側片部15bと、基部15aから下側へ延設された長尺帯状の下側片部15cとを備え、例えば、撓み変形可能な合成樹脂材料から構成される。
The covering member 15 has a first covering mode that covers the first folding mechanism A at the normal use position (see FIG. 6A), and a second covering mode that covers the first folding mechanism at the storage position. It is flexed and deformed between the covering mode (see FIG. 6C), that is, before and after the rotation of the front portion 11a.
More specifically, as shown in FIG. 3, the covering member 15 includes a base 15a, a long strip-shaped upper piece 15b extending upward from the base 15a, and extending downward from the base 15a. And a lower strip 15c formed of, for example, a long strip, and is made of, for example, a synthetic resin material that can be flexibly deformed.

基部15aは、略筒状に形成され、車体フレーム部10の前側部位11aに環状に装着さる。この基部15aの周壁には、前側部位11aの係止部11a1に嵌り合って係止される孔状の被係止部15a1が設けられる。
この基部15aは、前側部位11aと一体的に、上記通常使用位置か(図6(a)参照)ら上記収納位置(図6(b)参照)へ回動する。
The base portion 15a is formed in a substantially cylindrical shape, and is annularly mounted on the front portion 11a of the vehicle body frame portion 10. On the peripheral wall of the base 15a, there is provided a hole-shaped locked portion 15a1 that is fitted and locked to the locking portion 11a1 of the front portion 11a.
The base portion 15a rotates integrally with the front portion 11a from the normal use position (see FIG. 6A) to the storage position (see FIG. 6B).

上側片部15bは、上記通常使用位置(図6(a)参照)において、第一の折曲機構Aの上面側を前後方向へわたる長尺状に覆う。また、この上側片部15bは、上記収納位置(図6(c)参照)において、撓み変形して、第一の折曲機構Aの上面側から前端側にわたる範囲を側面視略逆L字状に覆う。   The upper piece 15b covers the upper surface of the first bending mechanism A in a long shape extending in the front-rear direction in the normal use position (see FIG. 6A). Further, the upper piece 15b is bent and deformed in the storage position (see FIG. 6C), so that the range from the upper surface side to the front end side of the first bending mechanism A is substantially inverted L-shape in a side view. Cover.

下側片部15cは、上記通常使用位置(図6(a)参照)において、第一の折曲機構Aの下面側を前後方向へわたる長尺状に覆う。また、この下側片部15cは、上記収納位置(図6(c)参照)において、基部15aに相対して撓み変形することで、第一の折曲機構Aの下面側を覆った状態を保持する。   The lower piece 15c covers the lower surface of the first bending mechanism A in a long shape extending in the front-rear direction at the above-mentioned normal use position (see FIG. 6A). In addition, the lower piece 15c is bent and deformed relative to the base 15a at the storage position (see FIG. 6C), so that the lower surface of the first folding mechanism A is covered. Hold.

下カバー16は、車体フレーム部10を間に挟むようにして、サドル80の下面に対し止着された部材であり、第一の折曲機構A及び被覆部材15等を下方側から覆っている。
この下カバー16の前端側には、車体フレーム部10の前側部位11aの回動を可能にする切欠部16aが設けられる。
The lower cover 16 is a member fixed to the lower surface of the saddle 80 so as to sandwich the body frame portion 10 therebetween, and covers the first bending mechanism A, the covering member 15 and the like from below.
At the front end side of the lower cover 16, a cutout portion 16 a that allows the front portion 11 a of the body frame portion 10 to rotate is provided.

この切欠部16aは、図3に示すように、前方を開口した凹状に形成され、水平状フレーム部11の前側部位11aを、回動可能に遊挿する。
切欠部16aの内側で、第一の折曲機構Aを外部に露出しようとする隙間や空間等は、外部から手が挿入されることのないように、上述した被覆部材15によって覆われる。
As shown in FIG. 3, the notch 16 a is formed in a concave shape with an open front, and rotatably loosely inserts the front portion 11 a of the horizontal frame 11.
The gap, space, and the like inside the cutout portion 16a where the first bending mechanism A is to be exposed to the outside are covered by the above-described covering member 15 so that a hand is not inserted from the outside.

また、前フレーム部20は、車体フレーム部10の前端側に接続され上下方向へ延設された部位であり、上部側に接続されたハンドル部40のハンドル操作により、ハンドル部40及びフォーク部21を一体的に回転させて、前輪30の走行方向を変化させるように構成される。
詳細に説明すれば、この前フレーム部20は、車体フレーム部10の前端部に略T字状に接続された円筒状の基筒部23と、基筒部23の下側でハンドル操作に伴う回転をする二股状のフォーク部21と、基筒部23の上側でハンドル操作に伴う回転をする回転支持部材24と、回転支持部材24を径方向に貫通する軸状の第二の枢支部c1と、回転支持部材24の上側でハンドル部40と一体的に回転する円筒状の回転筒部25とを具備する。
The front frame portion 20 is a portion connected to the front end side of the vehicle body frame portion 10 and extended in the vertical direction. The handle portion 40 and the fork portion 21 are operated by operating the handle portion 40 connected to the upper side. Are integrally rotated to change the traveling direction of the front wheel 30.
More specifically, the front frame portion 20 includes a cylindrical base tube portion 23 connected to the front end portion of the vehicle body frame portion 10 in a substantially T-shape, and a handle operation below the base tube portion 23 due to a handle operation. Bifurcated fork portion 21 that rotates, rotation support member 24 that rotates with handle operation above base cylinder portion 23, and second axial pivot portion c1 that penetrates rotation support member 24 in the radial direction. And a cylindrical rotary cylinder 25 that rotates integrally with the handle 40 above the rotation support member 24.

そして、この前フレーム部20は、回転支持部材24よりもハンドル部側を折り曲げるようにして後方へ回動させる第二の折曲機構Cと、第二の折曲機構Cを回動不能にロックしたり、このロック状態を所定の操作により解除したりするロック機構Dとを構成している。   The front frame part 20 locks the second bending mechanism C to rotate backward so as to bend the handle part side with respect to the rotation support member 24, and locks the second bending mechanism C so as not to rotate. And a lock mechanism D for releasing the locked state by a predetermined operation.

第二の折曲機構Cは、図8に示すように、回転支持部材24及び回転筒部25と、回転筒部25内で上下方向へスライドするスライド部材26と、スライド部材26の上側でスライド部材26を下方へ付勢する付勢部材27と、スライド部材26の下方側でスライド部材26を上下に嵌脱させる筒状の被嵌脱部材28とを具備して構成される。   As shown in FIG. 8, the second bending mechanism C includes a rotation support member 24 and a rotation tube portion 25, a slide member 26 that slides vertically in the rotation tube portion 25, and a slide member that slides above the slide member 26. It comprises an urging member 27 for urging the member 26 downward, and a tubular fitting / removing member 28 for vertically fitting / removing the sliding member 26 below the sliding member 26.

回転支持部材24は、上方へ突出する二股状の支持部24aに、軸状の第二の枢支部c1を跨らせて挿通している。
この回転支持部材24は、回転筒部25を、回転支持ブラケット25aを介して回転可能に支持している。
The rotation support member 24 is inserted through a bifurcated support portion 24a projecting upward across the shaft-like second pivot support portion c1.
The rotation support member 24 rotatably supports the rotary cylinder 25 via a rotation support bracket 25a.

回転筒部25は、長尺円筒状の部材であり、その下端側が第二の枢支部c1によって枢支され、基筒部23の上方に直線状に並ぶ初期位置(図8(a)参照)と、後方へ略90度折り曲げられた折畳み位置(図8(c)参照)との間で回動可能である。
回転支持ブラケット25aは、第二の枢支部c1を挿通して回転筒部25の下端側の外周面に一体に固定された外観視略球状の部材である。この回転支持ブラケット25aは、回転支持部材24に対する回転筒部25の回動の際に形成される隙間を小さくし、このような隙間に手や物等が挟まれるのを防ぐ。
さらに、この回転支持ブラケット25aは、回転支持部材24側の係止部(図示せず)に係止されて回転筒部25の折畳み回転量を規制したり、回転支持部材24に摺接して回転筒部25の回転を滑らかにしたりする機能も有する。
The rotary cylinder portion 25 is a long cylindrical member, the lower end of which is pivotally supported by the second pivot portion c1, and an initial position in which the rotation cylinder portion 25 is linearly arranged above the base cylinder portion 23 (see FIG. 8A). And a folded position (see FIG. 8 (c)) bent substantially 90 degrees rearward.
The rotation support bracket 25a is a substantially spherical member in external appearance, which is fixed to the outer peripheral surface on the lower end side of the rotary cylinder 25 through the second pivot portion c1. The rotation support bracket 25a reduces a gap formed when the rotary cylinder 25 rotates with respect to the rotation support member 24, and prevents a hand or an object from being caught in such a gap.
Further, the rotation support bracket 25 a is locked by a locking portion (not shown) on the rotation support member 24 side to regulate the amount of folding rotation of the rotary cylinder 25, and is rotated by sliding contact with the rotation support member 24. It also has a function of smoothing the rotation of the cylindrical portion 25.

スライド部材26は、回転筒部25の内側に設けられた円筒状又は円柱状の部材であり、その下端側を、回転筒部25の下端から下方へ突出させている。
このスライド部材26の周壁には、その下端側の両側部に上下方向へわたる貫通状の長孔26a(図8参照)が設けられ、上端側の前面部にも上下方向へわたる長孔d1(図7参照)が設けられる。
The slide member 26 is a cylindrical or columnar member provided inside the rotary cylinder 25, and has a lower end protruding downward from a lower end of the rotary cylinder 25.
On the peripheral wall of the slide member 26, a through-hole 26a (see FIG. 8) extending in the vertical direction is provided on both sides on the lower end side, and a long hole d1 (FIG. 8) extending in the vertical direction also on the front surface on the upper end side. 7 (see FIG. 7).

下端側の長孔26aには、第二の枢支部c1が挿通される。スライド部材26は、回転筒部25の内面に沿って上下へスライドするのに伴い、長孔26aを第二の枢支部c1に対し上下へ移動する。また、上端側の長孔d1は、後述するロック機構Dを構成する。   The second pivot c1 is inserted through the elongated hole 26a on the lower end side. The slide member 26 moves up and down the long hole 26a with respect to the second pivotal support part c1 as it slides up and down along the inner surface of the rotary cylinder 25. Further, the long hole d1 on the upper end side constitutes a lock mechanism D described later.

第二の枢支部c1は、上記したように軸状の部材であり、上述した回転支持部材24、回転筒部25、スライド部材26の長孔26aに挿通される。
そして、この第二の枢支部c1は、回転筒部25及びスライド部材26を回動可能に支持し、スライド部材26を上下スライド可能に支持し、ハンドル操作に伴う回転筒部25の回転を回転支持部材24へ伝達する。
The second pivot c1 is a shaft-shaped member as described above, and is inserted through the long hole 26a of the rotation support member 24, the rotation cylinder 25, and the slide member 26 described above.
The second pivot c1 rotatably supports the rotary cylinder 25 and the slide member 26, supports the slide member 26 so as to be slidable up and down, and rotates the rotation of the rotary cylinder 25 accompanying the operation of the handle. The power is transmitted to the support member 24.

付勢部材27は、図示例によれば、圧縮コイルバネである。この付勢部材27は、上端側を回転筒部25又はハンドル部40に係止するとともに、下端側をスライド部材26に係止することで、スライド部材26を、回転筒部25に相対し下方へ弾発している。   The urging member 27 is a compression coil spring according to the illustrated example. The urging member 27 locks the slide member 26 downwardly relative to the rotary cylinder 25 by locking the upper end to the rotary cylinder 25 or the handle 40 and locking the lower end to the slide member 26. It has bounced to.

また、被嵌脱部材28は、基筒部23内で中心軸に沿って延設された円筒状の部材であり、その上端側に、スライド部材26の下端側を嵌脱する(図8参照)。
この被嵌脱部材28は、下端側をフォーク部21に対し一体的に接続するとともに、上端側をピン28aによって回転支持部材24に接続している。
したがって、ハンドル操作に伴って回転支持部材24が回転すると、ピン28aを介して被嵌脱部材28も一体的に回転し、さらにフォーク部21も一体的に回転する。このため、フォーク部21に支持された前輪30の進行方向が変化する。
The fitted member 28 is a cylindrical member extending along the central axis in the base cylinder portion 23, and the lower end of the slide member 26 is fitted to the upper end thereof (see FIG. 8). ).
The fitting / removing member 28 has a lower end side integrally connected to the fork portion 21 and an upper end side connected to the rotation support member 24 by a pin 28a.
Therefore, when the rotation support member 24 rotates with the operation of the handle, the fitted / disengaged member 28 also integrally rotates via the pin 28a, and the fork portion 21 also integrally rotates. Therefore, the traveling direction of the front wheel 30 supported by the fork portion 21 changes.

また、ロック機構Dは、スライド部材26における上記長孔d1(図7参照)と、回転操作される回転操作部材d2とから構成される。   Further, the lock mechanism D includes the elongated hole d1 (see FIG. 7) in the slide member 26 and a rotation operation member d2 that is rotated.

回転操作部材d2は、回転筒部25の長孔d1に挿入されスライド部材26に螺合した雄ネジ部d21と、雄ネジ部d21の基端側に固定されて外部に露出する円盤状のダイヤル部d22とからなる。
雄ネジ部d21は、スライド部材26を貫通して、その先端部を回転筒部25の内周面に近接又は接触している。
スライド部材26の周壁には、雄ネジ部d21を螺合して挿通するナット状部材26bが一体的に固定される。
The rotary operation member d2 is inserted into the long hole d1 of the rotary cylinder portion 25 and screwed to the slide member 26, and a disk-shaped dial fixed to the base end side of the male screw portion d21 and exposed to the outside. And a part d22.
The male screw portion d <b> 21 penetrates through the slide member 26, and its distal end portion is close to or in contact with the inner peripheral surface of the rotary cylinder portion 25.
A nut-like member 26b into which the male screw portion d21 is screwed and inserted is fixed integrally to the peripheral wall of the slide member 26.

したがって、回転操作部材d2を締め付け方向へ回転させると、雄ネジ部d21がスライド部材26と一体のナット状部材26bにねじ込まれて前進し、雄ネジ部d21の先端部が回転筒部25の内周面に当接し、スライド部材26がスライドしないように固定される。   Therefore, when the rotation operation member d2 is rotated in the tightening direction, the male screw portion d21 is screwed into the nut-like member 26b integral with the slide member 26 and moves forward. The slide member 26 comes into contact with the peripheral surface and is fixed so as not to slide.

また、後フレーム部50は、車体フレーム部10の後端側から下方へ延設されている。この後フレーム部50の下端側には、逆T字状に、後輪軸部60が接続される。
言い換えれば、後フレーム部50は、後輪軸部60の中央側から上方へ突出しながら前方へ傾き、着座部81の後側着座領域81bの下方側で車体フレーム部10に連結されている。
この後フレーム部50と車体フレーム部10の水平状フレーム部11との成す角度αは、本実施の形態の好ましい一例によれば、100〜110度の範囲内に設定されている(図2参照)。この構成によれば、車体フレーム部10の後端側に加わる荷重を、後フレーム部50によって効果的に支えることができる上、後フレーム部50と車体フレーム部10の内角側の空間S1に、折り畳まれた前輪30を効果的に収納することができる。
なお、図中、符号51は、例えば、施錠用チェーンの装着や、牽引用ロープの接続、小物入れの装着等、多用途に用いられるU字状の係止部である。
The rear frame 50 extends downward from the rear end of the body frame 10. A rear wheel axle 60 is connected to the lower end of the rear frame 50 in an inverted T-shape.
In other words, the rear frame portion 50 is inclined forward while projecting upward from the center side of the rear wheel shaft portion 60, and is connected to the vehicle body frame portion 10 below the rear seating area 81b of the seating portion 81.
According to a preferred example of the present embodiment, the angle α between the rear frame portion 50 and the horizontal frame portion 11 of the vehicle body frame portion 10 is set in a range of 100 to 110 degrees (see FIG. 2). ). According to this configuration, the load applied to the rear end side of the vehicle body frame portion 10 can be effectively supported by the rear frame portion 50, and the space S1 on the inner corner side between the rear frame portion 50 and the vehicle body frame portion 10 has: The folded front wheel 30 can be effectively stored.
In the drawing, reference numeral 51 denotes a U-shaped locking portion that is used for various purposes such as mounting of a lock chain, connection of a tow rope, and mounting of an accessory case.

後輪軸部60は、当該三輪車1の車幅方向の両側へ延設される。その延設方向の各端部側には、後輪70が回転自在に支持される。
左右の後輪70,70は、図示例によれば、前輪30よりも小径に形成される。
The rear wheel axle 60 extends on both sides of the tricycle 1 in the vehicle width direction. A rear wheel 70 is rotatably supported at each end in the extending direction.
The left and right rear wheels 70, 70 are formed to have a smaller diameter than the front wheel 30 according to the illustrated example.

また、サドル80は、その下面側が、車体フレーム部10の水平状フレーム部11を車幅方向へ跨る凹溝状に形成され、この凹溝状部分を水平状フレーム部11に嵌め合わせて、ブラケット及びネジ等により止着固定される。
なお、このサドル80は、単一の一体の部材から構成してもよいし、硬質部材と、該硬質部材を覆う軟質のクッション部材等の複数の部材から構成してもよい。
Further, the saddle 80 has a lower surface formed in a groove shape that straddles the horizontal frame portion 11 of the vehicle body frame portion 10 in the vehicle width direction, and the groove portion is fitted to the horizontal frame portion 11 to form a bracket. And fixed with screws or the like.
The saddle 80 may be formed of a single integral member, or may be formed of a hard member and a plurality of members such as a soft cushion member that covers the hard member.

このサドル80の上面側には、後輪軸部60の中心よりも前側に、前後方向へ連続する長尺状の着座部81が設けられ、着座部81よりも後側に、後輪軸部60を前後に跨る長さの非着座部82が設けられる。   On the upper surface side of the saddle 80, a long seat portion 81 continuous in the front-rear direction is provided on the front side of the center of the rear wheel shaft portion 60, and the rear wheel shaft portion 60 is provided on the rear side of the seat portion 81. A non-seat portion 82 having a length extending in the front-rear direction is provided.

着座部81は、前寄りと後寄りの何れにも幼児を着座可能にした長尺状に形成される。この着座部81の表面は、凹凸のない略平坦状に形成される。   The seating portion 81 is formed in a long shape so that the infant can be seated on both the front side and the rear side. The surface of the seat portion 81 is formed in a substantially flat shape without unevenness.

非着座部82は、幼児が着座することのないように確保された部位であり、着座部81よりも後側において後輪軸部60を前後に跨る範囲に設けられる。
この非着座部82には、着座部81よりも上方へ突出する側面視略山形状の***部82aが設けられる。この***部82aの頂部は、後輪軸部60の中心よりも前側に位置する。着座部81は、この頂部よりも更に前側に位置することになる。
The non-seat portion 82 is a portion secured so that the infant does not sit, and is provided in a range that straddles the rear wheel axle portion 60 on the rear side of the seat portion 81 and back and forth.
The non-seat portion 82 is provided with a substantially mountain-shaped raised portion 82 a that projects upward from the seat portion 81. The top of the raised portion 82a is located forward of the center of the rear wheel axle 60. The seat 81 is located further forward than the top.

そして、上記構成の三輪車1は、左右の後輪70,70とサドル80の最後端部80aとが略水平で平坦状な被載置面Xに三点で接触して自立するように(図9参照)、サドル80の最後端部80aを後輪軸部60よりも後方へ突出させている。   In the three-wheeled vehicle 1 having the above-described configuration, the left and right rear wheels 70, 70 and the rearmost end 80a of the saddle 80 come into contact with the substantially horizontal and flat mounting surface X at three points and become independent (see FIG. 9), and the rearmost end portion 80a of the saddle 80 projects rearward from the rear wheel shaft portion 60.

次に、上記構成の三輪車1について、その特徴的な作用効果を詳細に説明する。
三輪車1を折り畳んで収納する場合は、図5に示すように、保護者等が一方の手で操作部17aを引きながら、他方の手で前フレーム部20側を下方へ折り込むようにすれば、第一の折曲機構Aによって、第一の枢支部a1よりも前側の部分(前側部位11a、前フレーム部20及びハンドル部40及び前輪30等)が回動して、前輪30が、サドル80と後フレーム部50がなす内角側の空間S1に入り込む。
Next, the characteristic operation and effect of the three-wheeled vehicle 1 having the above configuration will be described in detail.
When the tricycle 1 is stored in a folded state, as shown in FIG. 5, a parent or the like may pull the operation unit 17a with one hand and fold the front frame unit 20 side downward with the other hand. By the first bending mechanism A, a portion (the front side portion 11a, the front frame portion 20, the handle portion 40, the front wheel 30, and the like) on the front side of the first pivotal support portion a1 is rotated, and the front wheel 30 is moved to the saddle 80. And into the space S1 on the inner angle side formed by the rear frame portion 50.

特に、本実施の好ましい一例では、操作部17aをサドル80の後端側に配置しており、幼児は、操作部17aよりも前側で、サドル80に前向きに跨るため、操作部17aを操作し難い。このため、幼児による操作部17aの誤操作を防ぐことができる。   In particular, in a preferred example of the present embodiment, the operation unit 17a is disposed on the rear end side of the saddle 80, and the infant operates the operation unit 17a because the infant straddles the saddle 80 forward, ahead of the operation unit 17a. hard. For this reason, erroneous operation of the operation unit 17a by an infant can be prevented.

また、ハンドル部40及び前輪30側の前記回動は、前側部位11a側の部材と後側部位11b側の部材との係止構造により規制されるようになっている。このため、前輪30とサドル80の下面の間には、手等を挟まないようにする逃げ空間S2(図9参照)が確保される。   The rotation of the handle portion 40 and the front wheel 30 is restricted by a locking structure between a member on the front portion 11a and a member on the rear portion 11b. Therefore, a clearance space S2 (see FIG. 9) is secured between the front wheel 30 and the lower surface of the saddle 80 so as not to pinch a hand or the like.

前記折り畳み操作中の第一の折曲機構Aの作用について詳細に説明すれば、可撓性長尺部材17が引かれていない状態では、図6(a)に示すように、スライド部材a3が付勢部材a6の引張力により前方側へ寄せられ、このスライド部材a3のガイド部a31に、水平状フレーム部11における前側部位11aの係脱突起a5が嵌り合う。
このため、通常使用状態では、水平状フレーム部11の前側部位11aが、後側部位11bに対し直線状に保持される。
The operation of the first folding mechanism A during the folding operation will be described in detail. In the state where the flexible long member 17 is not pulled, as shown in FIG. The guide member a31 of the slide member a3 is engaged with the engagement / disengagement protrusion a5 of the front portion 11a of the horizontal frame portion 11 by the pulling force of the urging member a6.
Therefore, in the normal use state, the front portion 11a of the horizontal frame portion 11 is held linearly with respect to the rear portion 11b.

図6(b)に示すように、操作部17aに対する引張操作により、可撓性長尺部材17が後方へ引かれると、スライド部材a3も後方へ移動し、係脱突起a5が、スライド部材a3のガイド部a31から前方に外れ、下方へ回動可能になる。
そして、図6(c)に示すように、前側部位11aに下方への力が加わると、前側部位11aは、第一の枢支部a1を支点にして下方へ回動する。
As shown in FIG. 6B, when the flexible elongate member 17 is pulled rearward by the pulling operation on the operation portion 17a, the slide member a3 also moves rearward, and the engagement / disengagement protrusion a5 is moved by the slide member a3. From the guide portion a31, and can rotate downward.
Then, as shown in FIG. 6C, when a downward force is applied to the front side portion 11a, the front side portion 11a pivots downward about the first pivotal support part a1.

そして、前記のように、車体フレーム部10を折り畳んだ状態で、ハンドル部40側を上方へ向け、左右の後輪70とサドル80の最後端部80aの三点を被載置面Xに接触させれば、三輪車1を転動防止した状態で省スペースに直立させることができ、さらに、ハンドル部40を後方へ折り込めば、三輪車1全体をコンパクトな収納態様にすることができる(図9参照)。   Then, as described above, with the body frame portion 10 folded, the handle portion 40 is directed upward, and the three points of the left and right rear wheels 70 and the rearmost end portion 80a of the saddle 80 are brought into contact with the mounting surface X. By doing so, the tricycle 1 can be erected in a space-saving manner with the rolling prevented, and if the handle portion 40 is folded back, the entire tricycle 1 can be compactly stored (FIG. 9). reference).

ハンドル部40の折り畳み操作について詳細に説明すれば、先ず、図7及び図8に示すように、回転操作部材d2を緩み方向へ回転させ、回転操作部材d2における雄ネジ部d21の先端を回転筒部25内周面から引き離す。
次に、回転操作部材d2を引き上げるようにして、回転筒部25内のスライド部材26を上方へスライドさせ、スライド部材26の下端側を、被嵌脱部材28から上方へ外す(図8(b)参照)
The folding operation of the handle portion 40 will be described in detail. First, as shown in FIGS. 7 and 8, the rotation operation member d2 is rotated in the loosening direction, and the tip of the male screw portion d21 of the rotation operation member d2 is rotated. Separate from the inner peripheral surface of the part 25.
Next, the slide member 26 in the rotary cylinder portion 25 is slid upward by pulling up the rotation operation member d2, and the lower end side of the slide member 26 is removed upward from the fitted / disengaged member 28 (FIG. 8B )reference)

そして、回転操作部材d2を引き上げた状態のまま、ハンドル部40に対し後方への力を加えれば、回転筒部25及びスライド部材26等が、第二の枢支部c1を支点にして後方へ回動して、折畳み位置になる(図8(b)(c)参照)。   Then, when a rearward force is applied to the handle portion 40 while the rotation operation member d2 is pulled up, the rotary cylinder portion 25 and the slide member 26 and the like turn rearward with the second pivot portion c1 as a fulcrum. It moves to the folded position (see FIGS. 8B and 8C).

すなわち、ハンドル部40を折り畳むためには、回転操作部材d2対する回転操作及び引き上げ操作という、複雑な組み合わせ操作を要する。このため、幼児が意図せずにハンドル部40を折り畳んでしまうようなことを防ぐことができる。   That is, in order to fold the handle portion 40, a complicated combination operation of a rotation operation and a lifting operation on the rotation operation member d2 is required. Therefore, it is possible to prevent the infant from unintentionally folding the handle portion 40.

前記折畳み位置にて、回転操作部材d2及びハンドル部40等に加わる力を除去すれば、スライド部材26は、付勢部材27の弾発力により前方へスライドし、そのスライド方向の先端部を前方へ向けて外部に突出し、この状態が保持される(図8(c)参照)。
後方への前記回動は、回転筒部25側の部材と回転支持部材24側の部材との係止構造により規制されるようになっている。このため、ハンドル部40とサドル80の前端との間には、手等を挟まないようにする逃げ空間S3(図9参照)が確保される。
When the force applied to the rotation operation member d2 and the handle portion 40 and the like is removed at the folding position, the slide member 26 slides forward due to the elastic force of the urging member 27, and the leading end in the slide direction moves forward. , And this state is maintained (see FIG. 8C).
The backward rotation is restricted by a locking structure between the member on the rotary cylinder portion 25 side and the member on the rotation support member 24 side. For this reason, a clearance space S3 (see FIG. 9) is provided between the handle portion 40 and the front end of the saddle 80 so as not to pinch a hand or the like.

折り畳まれたハンドル部40及び車体フレーム部10等を、元の通常使用状態に戻すには、上記と逆の操作を行えばよい。
特に、本実施態様では、車体フレーム部10前側部位11aを元の状態に戻す際に、前側部位11aの逆方向(図6によれば時計方向)への回動量が、係脱突起a5とガイド部a21の係合により規制されて、この規制位置にて、傾斜フレーム部12とサドル80の前端との間に、手等を挟まないようにする逃げ空間S4(図1参照)が確保されるようにしている。
To return the folded handle portion 40, body frame portion 10, and the like to the original normal use state, the reverse operation to the above may be performed.
In particular, in the present embodiment, when returning the front portion 11a of the vehicle body frame portion 10 to the original state, the amount of rotation of the front portion 11a in the opposite direction (clockwise in FIG. 6) is determined by the engagement / disengagement protrusion a5 and the guide. Restricted by the engagement of the portion a21, a clearance space S4 (see FIG. 1) is secured between the inclined frame portion 12 and the front end of the saddle 80 at this restricted position so as not to pinch a hand or the like. Like that.

また、本実施態様によれば、前側部位11aの回動のために下カバー16に形成される切欠部16aを、下カバー16の内側にて被覆部材15により塞ぐとともに、この被覆部材15によって第一の折曲機構Aを覆い、この被覆部材15による被覆状態を、被覆部材15の撓み変形により保持するようにしている。
このため、三輪車1を折り畳み操作する保護者等が、第一の折曲機構Aに触れてしまうのを防ぐことができる。
Further, according to the present embodiment, the notch 16a formed in the lower cover 16 for the rotation of the front side portion 11a is closed by the covering member 15 inside the lower cover 16, and One of the bending mechanisms A is covered, and the state of covering by the covering member 15 is held by the bending deformation of the covering member 15.
For this reason, it is possible to prevent a parent or the like who folds the tricycle 1 from touching the first folding mechanism A.

なお、図示例では、三輪車1の基本構造をわかり易くするために、各部材を簡素化して表現しているが、三輪車1を構成する各部材は、製造性の向上等を考慮して、適宜に複数の部材から構成したり、単数の部材により一体に構成したりすることが可能である。   Note that, in the illustrated example, each member is simplified in order to make the basic structure of the tricycle 1 easy to understand. However, each member constituting the tricycle 1 is appropriately determined in consideration of improvement in manufacturability and the like. It is possible to be composed of a plurality of members or to be integrally composed of a single member.

また、本発明は上述した実施態様に限定されず、本発明の要旨を変更しない範囲で適宜変更可能である。   Further, the present invention is not limited to the above-described embodiment, and can be appropriately changed without changing the gist of the present invention.

1:三輪車
10:車体フレーム部
11:水平状フレーム部
12:傾斜フレーム部
15:被覆部材
17a:操作部
20:前フレーム部
30:前輪
40:ハンドル部
50:後フレーム部
60:後輪軸部
70:後輪
80:サドル
81:着座部
81a:前側着座領域
81b:後側着座領域
82:非着座部
82a:***部
A:第一の折曲機構
C:第二の折曲機構
D:ロック機構
X:被載置面
S1:空間(収納空間)
S2〜S4:逃げ空間
1: Tricycle 10: Body frame section 11: Horizontal frame section 12: Inclined frame section 15: Covering member 17a: Operation section 20: Front frame section 30: Front wheel 40: Handle section 50: Rear frame section 60: Rear wheel axle section 70 : Rear wheel 80: Saddle 81: Seating portion 81a: Front seating region 81b: Rear seating region 82: Non-seat portion 82a: Raised portion A: First bending mechanism C: Second bending mechanism D: Lock mechanism X: mounting surface S1: space (storage space)
S2 to S4: Escape space

Claims (6)

前後方向へわたる車体フレーム部と、前記車体フレーム部の前端側に交差状に接続されて上下に延設された前フレーム部と、前記前フレーム部の下端側に回転自在に支持された前輪と、前記前フレーム部の上端側に接続されて車幅方向へ延設されたハンドル部と、前記車体フレーム部の後端側で下方へ延設された後フレーム部と、前記後フレーム部の下端側に接続されて車幅方向へ延設された後輪軸部と、前記後輪軸部の両端側で回転自在な後輪と、前記車体フレーム部に支持されたサドルとを備えた三輪車であって、
前記車体フレーム部には、前側部位を後側部位に対し折り曲げるように回動させて収納位置にする第一の折曲機構が設けられ、
前記第一の折曲機構は、前記収納位置にて、前記前輪を前記車体フレーム部と前記後フレーム部の内角側の空間に入り込ませることを特徴とする三輪車。
A vehicle body frame portion extending in the front-rear direction, a front frame portion connected to the front end side of the vehicle body frame portion in a cross shape and extending vertically, and a front wheel rotatably supported at a lower end side of the front frame portion. A handle portion connected to an upper end of the front frame portion and extending in the vehicle width direction; a rear frame portion extending downward at a rear end side of the vehicle body frame portion; and a lower end of the rear frame portion A three-wheeled vehicle comprising: a rear wheel axle portion connected to the vehicle side and extending in the vehicle width direction; a rear wheel rotatable at both ends of the rear wheel axle portion; and a saddle supported by the vehicle body frame portion. ,
The vehicle body frame portion is provided with a first bending mechanism that is rotated to bend the front portion with respect to the rear portion to the storage position,
The three-wheeled vehicle according to claim 1, wherein the first bending mechanism causes the front wheel to enter a space on an inner corner side of the body frame portion and the rear frame portion at the storage position.
前記第一の折曲機構は、前記前側部位を通常使用位置で係止状態にし、この係止状態を操作部の操作によって解除して、前記前側部位を前記収納位置に回動させるように構成され、
前記操作部は、前記サドルの着座部よりも後側に設けられていることを特徴とする請求項1記載の三輪車。
The first bending mechanism is configured to lock the front side portion in a normal use position, release the locked state by operating an operation unit, and rotate the front side portion to the storage position. And
The tricycle according to claim 1, wherein the operation unit is provided on a rear side of a seating portion of the saddle.
前記第一の折曲機構を覆う可撓性の被覆部材を備え、
前記被覆部材は、前記前側部位の回動の前後で、前記第一の折曲機構を覆うように撓み変形することを特徴とする請求項1又は2記載の三輪車。
A flexible covering member that covers the first folding mechanism,
The three-wheeled vehicle according to claim 1, wherein the covering member bends and deforms so as to cover the first bending mechanism before and after the rotation of the front portion.
左右の前記後輪と前記サドルの後端とが被載置面に三点で接触して自立するように、前記サドルの後端位置を設定したことを特徴とする請求項1〜3何れか1項記載の三輪車。   The rear end position of the saddle is set so that the left and right rear wheels and the rear end of the saddle come into contact with the mounting surface at three points and become independent. The tricycle of claim 1. 前記前フレーム部における前記車体フレーム部との接続箇所よりも上側には、ハンドル部側を折り曲げるように後方へ回動させる第二の折曲機構が設けられていることを特徴とする請求項1〜4何れか1項記載の三輪車。   2. A second bending mechanism for rotating the front frame portion rearward so as to bend the handle portion side above a connection portion with the vehicle body frame portion is provided. A tricycle according to any one of claims 1 to 4. ハンドル部側の後方への回動をロックし、このロック状態を所定の操作により解除するロック機構を備えていることを特徴とする請求項5記載の三輪車。   6. The three-wheeled vehicle according to claim 5, further comprising a lock mechanism for locking the rearward rotation of the handle portion side and releasing the locked state by a predetermined operation.
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