JPS63212185A - Low deck small-sized three wheel vehicle - Google Patents

Abstract

PURPOSE:To prevent contact of deck surfaces of the front wheels sides with the road surface by arranging a pair of right and left caster wheels in the neighborhood of the right and left angle parts of a body so that the caster wheels separate from the read surface in the stationary state of the car body. CONSTITUTION:A pair of right and left casters 122 are provided in the neighborhood of the right and left angle parts of the front part of a body 34. These caster wheels 122 are capable of rotating with a caster axis 130 as its center, and the height position is determined so that they float up slightly from the road surface in the stationary state capable of driving. Thereby, during driving on the undulated road surface, even if a low deck surface 36 at the front wheel sides comes close to the road surface, the caster wheels 122 touch the ground before that. Accordingly, the deck surface 36 at the front wheel sides does not touch the road surface because of undulation of the road surface and it can be smoothly climbed over.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、車椅子を用いる身障者や足腰の弱った高齢者
等の利用に適する低床小型３輪車に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a small, low-floor tricycle suitable for use by disabled people who use wheelchairs, elderly people with weak legs, and the like.

（発明の背景） 小４４子を用いる身障者や足腰の弱い高齢者で他人の介
助を必要とする人々は、できることなら賛丈者と同じよ
うに積極的に社会参加し野外に出たいと願っている。こ
のような人々が独立して一人で自由に行動することがで
きればこのような希望も満たされるものと思われる。(Background of the Invention) People with physical disabilities or elderly people with weak legs who require assistance from others, who are children of 44 years old, wish to participate in society as actively as supporters and go outdoors if possible. There is. If such people were able to act independently and freely, their hopes would be fulfilled.

そこでこれらの人々が一人で他人の助けを借りずに自由
に移動するのに好適な動力付きの乗り物が求められてい
た。この場合ごれらの人々が一人で楽に乗降でき、車体
の安定性が高くしかも小回りが効くことが特に要求され
る。そこで車輪の数を小回りの効く３輪にすると共に後
方が開いた低い床面を持つボデーとし、この床面に後方
から乗降できるようにした低床小型３輪車が出願人によ
り提案されている（特願昭６１−１５１４２４号）。し
かしこの場合前輪が一輪であるため、路面のうねりなど
により、前輪側方の低い床面が路面に接触して不快な音
を発生することがあり、走行時の乗車感が悪くなるとい
う問題があった。Therefore, there was a need for a motorized vehicle suitable for these people to move freely by themselves without the help of others. In this case, it is especially important that people can easily get on and off the vehicle by themselves, that the vehicle body is highly stable, and that the vehicle can turn quickly. Therefore, the applicant has proposed a low-floor small three-wheeled vehicle in which the number of wheels is reduced to three, which makes it easier to turn, and the body has a low floor surface that is open at the rear so that passengers can get on and off the vehicle from the rear. (Patent Application No. 151424/1982). However, since there is only one front wheel in this case, due to road undulations, the low floor on the side of the front wheel may come into contact with the road surface, producing unpleasant noises, resulting in a poor riding feeling while driving. there were.

（発明の目的） 本発明はこのような事情に鑑みなされたものであり、小
回りの効く３輪車の特性をそのまま生がしつつも、路面
のうねりなどにより前輪側方の床面が路面に接触するこ
ともない低床小型３輪車を提供することを目的とする。(Purpose of the Invention) The present invention was made in view of the above circumstances, and while maintaining the characteristics of a three-wheeled vehicle that has a small turning radius, the floor surface on the side of the front wheels touches the road surface due to undulations of the road surface. The purpose is to provide a low-floor small three-wheeled vehicle that does not cause contact.

（発明の構成） 本発明によればこの目的は、略平板状の床面の前方およ
び左右側方をほぼ連続的に囲む前起立壁および左右起立
壁を有するボデーと、前記前起立壁から上方へ立上がる
ハンドル軸と、前記前起立壁に収容された１個の操向前
輪と、前記左右起立壁に設けられた左右一対の後輪とを
備え、後方に向って開いた前記床面の後部から乗１ｌｉ
ＩＴｆｒ能とした低床小型３輪車において、前記ボデー
の前部の左右角部付近に路面から適宜距離を離して左右
一対のキャスタ輪を設けたことを特徴とする低床小型３
輪車により達成される。(Structure of the Invention) According to the present invention, the object is to provide a body having a front upright wall and left and right upright walls that substantially continuously surround the front and right and left sides of a substantially flat floor surface, and a body that extends upward from the front upright wall. The steering wheel is provided with a handle shaft that stands up to the front, one steering front wheel housed in the front upright wall, and a pair of left and right rear wheels installed in the left and right upright walls, and the floor surface that opens toward the rear. 1li from the rear
A low-floor compact three-wheeled vehicle with ITfr functionality, characterized in that a pair of left and right caster wheels are provided near the left and right corners of the front part of the body at an appropriate distance from the road surface.
Achieved by wheeled wheels.

（実施例） 第１図は本発明の一実施例の使用状態を示す斜視図、第
２図はその車輌の後面図、第３図は同じ＜　ＭＬ面図、
第４，５図は車輌構造を示す平面図と側面図、第６図は
空気圧系統図、第７図は動力系統図、第８図は小椅子の
乗降動作説明図、第９図はその乗車状態の説明図、また
第１０図はキャスタ輪付近の斜視図である。(Embodiment) Fig. 1 is a perspective view showing an example of the present invention in use, Fig. 2 is a rear view of the vehicle, and Fig. 3 is the same <ML side view.
Figures 4 and 5 are a plan view and side view showing the vehicle structure, Figure 6 is a pneumatic system diagram, Figure 7 is a power system diagram, Figure 8 is an explanatory diagram of how to get on and off the small chair, and Figure 9 is how to get on and off the chair. An explanatory diagram of the state, and FIG. 10 is a perspective view of the vicinity of the caster wheel.

第４．５図において、符号１０は車体フレームであり、
前後方向に長い四角形に形成されている。この車体フレ
ーム１０は、下チューブ１２と、下チューブ１２の前部
に固着された上方へ凸な前チユーブ１４と、この前チユ
ーブ１４の後部から後方へのびて後端が下チューブ１２
に固着された側チューブ１６とからなる左フレーム１８
ａおよｔ！　右フレーム１８ｂを、適宜のクロスメンバ
２０．２２，２４．２６．２Ｂ、３０．３２で相互に固
着することにより作られている。　３４は合成樹脂によ
り一体成形されたボデーであり、略平板状の床面３６と
、この床面３６の前方および左右側方を連続的に囲み断
面が下方に開いた略箱状に形成された前起立壁３８およ
び左右起立壁４０．４０を有する。前記前チユーブ１４
およびクロスメンバ２０．２２．２４．２６は前起立壁
３８内に位置する。この前起立壁３８の上面は蓋板３８
ａにより開閉可能である。前記下チューブ１２．１２の
後半部分と側チューブ１６．１６はそれぞれ左右の起立
壁４０．４０内に位置する。In Fig. 4.5, numeral 10 is the vehicle body frame;
It is formed into a rectangular shape that is long in the front and back direction. The vehicle body frame 10 includes a lower tube 12, an upwardly convex front tube 14 fixed to the front part of the lower tube 12, and a front tube 14 that extends rearward from the rear of the front tube 14 and has a rear end connected to the lower tube 12.
a left frame 18 consisting of a side tube 16 fixed to the
a and t! It is made by fixing the right frame 18b to each other with appropriate cross members 20.22, 24.26.2B, 30.32. Reference numeral 34 denotes a body integrally molded from synthetic resin, which has a substantially flat floor surface 36 and a substantially box-shaped cross section that continuously surrounds the front and left and right sides of this floor surface 36 and is open downward. It has a front standing wall 38 and left and right standing walls 40 and 40. The front tube 14
and cross members 20.22.24.26 are located within the front upright wall 38. The upper surface of this front standing wall 38 is a cover plate 38
It can be opened and closed by a. The rear part of the lower tube 12.12 and the side tubes 16.16 are located in the left and right upstanding walls 40.40, respectively.

床面３６の後部は左右起立壁４０．４０間から後方に開
いている。前起立壁３８には前照灯ａ、方向指示灯す、
ｂが、また左右起立壁４０．４０後部には尾灯ｃ、ｃが
取付けられている（第１．３図）。The rear part of the floor surface 36 opens rearward from between the left and right standing walls 40, 40. The front standing wall 38 has a headlight a and a direction indicator light.
b, and taillights c and c are attached to the rear of the left and right standing walls 40 and 40 (Fig. 1.3).

左右の前チユーブ１４．１４をつなぐクロスメンバ２４
．２６には、前後方向に長い略箱状のブラケット４２が
固着され、このブラケット４２には操向軸筒４４が貫通
し固着されている。この操向軸筒４４には操向前輪４６
を支持する前フオーク４８が左右へ回動自在に保持され
ている。５０は前起立壁３８から上方へ立上がるハンド
ル軸であり、前記クロスメンバ２２と２６とに保持され
、このハンドル軸５０と前フオーク４８とにそれぞれ車
体幅方向に突設されたブラケット５２．５４（第４図）
はリンク５６で連結されている。Cross member 24 connecting left and right front tubes 14.14
．． A substantially box-shaped bracket 42 that is long in the front-rear direction is fixed to 26, and a steering shaft cylinder 44 passes through and is fixed to this bracket 42. This steering shaft cylinder 44 has a steering front wheel 46.
A front fork 48 supporting the front fork is held rotatably left and right. Reference numeral 50 denotes a handle shaft rising upward from the front upright wall 38, and is held by the cross members 22 and 26, and brackets 52 and 54 are provided on the handle shaft 50 and the front fork 48, respectively, to protrude in the width direction of the vehicle body. (Figure 4)
are connected by a link 56.

このハンドル軸５０の上端にはハンドルパー５８が固定
されている。従ってハンドルパー５８およびハンドル軸
５０の回動はリンク５６により前フオーク４８に伝えら
れ、前輪４６が転舵される。A handle par 58 is fixed to the upper end of this handle shaft 50. Therefore, the rotation of the handlebar 58 and the handle shaft 50 is transmitted to the front fork 48 by the link 56, and the front wheel 46 is steered.

なおハンドル軸５０には前後割りのカバー６０が取付け
られ、ハンドルパー５８はハンドルカバー６２により覆
われている。なおハンドル軸５０は、前起立壁３８の蓋
板３８ａで開閉される開口部の後縁から立上り（第３図
参照）、この開ｒ１部にハンドルパー５８を通すことに
よりボデー３４を小体フレーム１０から上方に取外すこ
とができる。Note that a front and rear cover 60 is attached to the handle shaft 50, and the handle par 58 is covered with a handle cover 62. The handle shaft 50 rises from the rear edge of the opening that is opened and closed by the cover plate 38a of the front standing wall 38 (see FIG. 3), and by passing the handle par 58 through this opening r1, the body 34 is assembled into a small frame. 10 and can be removed upwardly.

６４．６４は左右一対の後輪であり、これらは空気圧に
より七丁動可能に左右起立壁４０．４０内に収容されて
いる。この後輪６４のに下動機構は左右対称なので、そ
の一方につき説明する。Reference numerals 64 and 64 designate a pair of left and right rear wheels, which are housed within the left and right upright walls 40 and 40 so as to be movable by air pressure. Since the lowering mechanism for the rear wheel 64 is symmetrical, only one of them will be explained.

前記クロスメンバ３０は左右のドチューブ１２．１２の
下方を通って側方へ突出し、両突出端からに方へ起ケす
るステー６６と、ドチューブｌ２と側チューブ１６とを
つなぐ立ブラケット６８との間に、逆Ｔ字型の２枚の揺
動アーム７０の前端が上下動自在に軸支され、両揺動ア
ーム７０の後端間に後輪６４が保持されている（第５図
参照）。７２は空気シリンダであり、その前端は側チュ
ーブ１６に、後端は揺動アーム７０の上端にそれぞれ軸
支されている。The cross member 30 passes below the left and right side tubes 12 and 12 and protrudes laterally between the stay 66 that rises from both projecting ends and the vertical bracket 68 that connects the side tube 12 and the side tube 16. The front ends of two inverted T-shaped swing arms 70 are pivotally supported for vertical movement, and a rear wheel 64 is held between the rear ends of both swing arms 70 (see FIG. 5). Reference numeral 72 denotes an air cylinder, whose front end is pivotally supported by the side tube 16 and its rear end is pivotally supported by the upper end of the swing arm 70.

空気シリンダ７２は第６図に示す空気圧制御機構により
伸縮される。すなわち前記ハンドルカバー６２にはアッ
プスイッチ７４およびダウンスイッチ７６が設けられ、
アップスイッチ７４をオンとすれば電動モータ７８が空
気ポンプ８０を作動する。このポンプ８０の吐出空気は
ストレーナ８２を通って電磁切換弁８４に送られる。こ
の切換弁８４はアップスイッチ７４のオンによりポンプ
８０の吐出圧を空気シリンダ７２に供給し、シリンダ７
２を伸長させる。このため揺動アーム７０は第５図で時
計方向に回動され両後輪６４は下方へ突出する。すなわ
ち車体フレームｌＯの後部は路面から上方へ離れ走行可
能な状態となる。The air cylinder 72 is expanded and contracted by an air pressure control mechanism shown in FIG. That is, the handle cover 62 is provided with an up switch 74 and a down switch 76,
When the up switch 74 is turned on, the electric motor 78 operates the air pump 80. The air discharged from the pump 80 is sent to an electromagnetic switching valve 84 through a strainer 82 . This switching valve 84 supplies the discharge pressure of the pump 80 to the air cylinder 72 when the up switch 74 is turned on.
Extend 2. Therefore, the swing arm 70 is rotated clockwise in FIG. 5, and both rear wheels 64 protrude downward. In other words, the rear part of the vehicle body frame IO is separated upward from the road surface and becomes ready for running.

またダウンスイッチ７６をオンとすれば、切換弁８４は
空気シリンダ７２の圧力を大気へ逃すように切換えられ
る。このため空気シリンダ７２は車体屯ｌ迂により縮み
、両後輪６４はに方へ移動する。すなわち車体フレーム
１０の後部は下降する。この時クロスメンバ３０下面に
固着したゴムブロック３０ａが路面に接触し、車体移動
を防止する。このように車体後部を下降させた状態で車
積／−Ａが乗込み可能となる（第８図）。Further, when the down switch 76 is turned on, the switching valve 84 is switched so as to release the pressure of the air cylinder 72 to the atmosphere. As a result, the air cylinder 72 contracts due to the rotation of the vehicle body, and both rear wheels 64 move in the opposite direction. That is, the rear portion of the vehicle body frame 10 is lowered. At this time, the rubber block 30a fixed to the lower surface of the cross member 30 comes into contact with the road surface and prevents the vehicle from moving. With the rear part of the vehicle body lowered in this manner, vehicle volume /-A can be entered (FIG. 8).

なおこの実施例では車体の上下動に伴って回動する車止
め８６が、左右起ケ壁４０．４０間の後部に装着されて
いる。すなわちこの車止め８６はＵ字型に折曲された剛
直な金属板で作られ、その両端は左右の側チューブ１６
．１６に回動可能に取付けられている。両端にはまたレ
バー８８．８８が１２４着され、両レバー８８．８８の
回動端と前記揺動アーム７０．７０とがリンク９０．９
０で連結されている。この結果空気シリンダ７２が縮ん
で重体後部が下降した状態では、第８図に示すように車
止め８６の中間部は床面３６に接触または近接する。In this embodiment, a wheel stopper 86 that rotates as the vehicle body moves up and down is attached to the rear portion between the left and right raised walls 40 and 40. In other words, this wheel stopper 86 is made of a rigid metal plate bent into a U shape, and both ends thereof are connected to the left and right side tubes 16.
．． It is rotatably attached to 16. 124 levers 88.88 are also attached to both ends, and the pivoting ends of both levers 88.88 and the swinging arm 70.70 are connected to a link 90.9.
Connected with 0. As a result, when the air cylinder 72 is contracted and the rear part of the heavy body is lowered, the intermediate portion of the car stop 86 comes into contact with or approaches the floor surface 36, as shown in FIG.

従って車椅子Ａで乗込む際には、補助輪Ｂでこの車止め
８６を乗り越えてここに停止させて一時ｉ１ｉ椅子Ａを
止め、さらに床面３６内へ深く乗込めば次に主輪Ｃが車
止め８６を乗り越えて停止する。すなわち床面３６は後
部が低くなるように傾いているが、補助輪Ｂ、主輪Ｃを
順次この車止め８６に係止することにより車椅子Ａが床
面３６の斜面を後方に自走することがなくなり、乗り込
み動作が容易になる。Therefore, when getting on the wheelchair A, use the auxiliary wheels B to get over this bollard 86 and stop the i1i chair A temporarily, and then get in deeper into the floor 36, and then the main wheels C will move to the bollard 86. Go over it and stop. That is, although the floor surface 36 is inclined so that the rear part is lower, the wheelchair A can move backward on the slope of the floor surface 36 by sequentially locking the auxiliary wheels B and the main wheels C to the wheel stops 86. This makes it easier to get into the vehicle.

また空気シリンダ７２を伸長させて車体後部を路面から
Ｌ昇させれば、第９図に示すように車止め８６は反時計
方向に回動し、主輪Ｃの後下部に接触する。この状態で
車椅子Ａの駐車ブレーキＥをかけておけば、車椅子Ａは
このブレーキＥで固定されるだけでなく後方への移動を
確実に規制することができる。Furthermore, when the air cylinder 72 is extended to raise the rear part of the vehicle body from the road surface, the wheel stop 86 rotates counterclockwise and comes into contact with the rear lower part of the main wheel C, as shown in FIG. If the parking brake E of the wheelchair A is applied in this state, the wheelchair A is not only fixed by the brake E, but also can be reliably restricted from moving backwards.

さらに車止め８６は左右の後輪６４の昇降を同期させる
作用を持つから、後輪６４を空気シリンダ７２で昇降さ
せる際に車体が左右に傾くことがない。Furthermore, since the wheel stopper 86 has the effect of synchronizing the elevation of the left and right rear wheels 64, the vehicle body does not tilt to the left or right when the rear wheels 64 are raised or lowered by the air cylinders 72.

第７図において、符号９２は走行用原動機としての強制
空冷式２サイクルガソリンエンジンであり、前記前起立
壁３８内の左側に配設されている。このエンジン９２は
、片持ちクランク軸９４、このクランク軸９４に５２け
られたマグネト発電機９６、遠心クラッチ９８等を備え
、クランク軸９４の回転は遠心クラッチ９８、■ベルト
１００および前後進切換機構１０２を介して出力軸１０
４に伝えられる。前起立壁３８内にはまた差動装置１０
６が配設され、この出力軸１０４の回転はチューン１０
７によりこの差動装置１０６に伝えられ、さらに左右一
対の駆動軸１０８（１０８ａ、１０８ｂ）にえられる、
この駆動軸１０８は前起立壁３８内に横設され、各駆動
軸１０８ａ、１０８ｂｃ７）回転は左右起立壁４０．４
０内を前後方向に通るチューン１１０によって各後輪６
４に伝えられる。In FIG. 7, reference numeral 92 denotes a forced air-cooled two-stroke gasoline engine as a driving engine, which is disposed on the left side of the front upright wall 38. This engine 92 includes a cantilevered crankshaft 94, a magneto generator 96 disposed on the crankshaft 94, a centrifugal clutch 98, etc., and the rotation of the crankshaft 94 is controlled by the centrifugal clutch 98, a belt 100, and a forward/reverse switching mechanism. Output shaft 10 via 102
4 can be conveyed. Also inside the front upright wall 38 is a differential gear 10.
6 is arranged, and the rotation of this output shaft 104 is controlled by tune 10.
7 to this differential device 106, and further provided to a pair of left and right drive shafts 108 (108a, 108b).
This drive shaft 108 is installed horizontally within the front upright wall 38, and each drive shaft 108a, 108bc7) rotates through the left and right upright walls 40.4.
Each rear wheel 6 is connected by a tune 110 that passes through the inside of the
4 can be conveyed.

なお第７図において前後進切換機構１０２は、出力軸１
０４上を軸方向に摺動するスライダ１０２ａを、前進用
歯車１０２ｂまたは後進用南車１０２ｃに選択的に係合
させるように構成される。このスライダ１０２ａは、例
えばハンドルパー５８に設けた切換えレバー１１４（第
２．３図参照）により移動される。In addition, in FIG. 7, the forward/reverse switching mechanism 102 is connected to the output shaft 1.
The slider 102a, which slides axially on the slider 104, is configured to selectively engage the forward gear 102b or the reverse south wheel 102c. This slider 102a is moved, for example, by a switching lever 114 (see FIG. 2.3) provided on the handlebar 58.

また第７図で１１６は気化器、１１８はフィルタエレメ
ントであり、外気は吸気口１２０から気化１ｇ１１６の
収容室に入り、ニレメン）１１８を通って気化器１１６
に入り、さらにリード弁を介してクランク室内に吸入さ
れる。Further, in FIG. 7, 116 is a vaporizer, 118 is a filter element, and outside air enters the storage chamber for 1g of vaporized material 116 from an intake port 120, passes through the vaporizer 118, and then passes through the vaporizer 116.
It is then sucked into the crank chamber via the reed valve.

次に本発明に係るキャスタ輪１２２．１２２を説明する
。左右一対のキャスタ輪１２２．１２２は前記ボデー３
４の前部の左右角部付近に設けられている。すなわち第
５．１０図に示すように下チューブ１２は前チユーブ１
４の下方でボデー中心側に弾状に湾曲し、この湾曲した
部分と前チユーブ１４の中央付近とはキャスタ支持メン
バ１２４で連結されている。このキャスタ支持メンバ１
２４にはボデー外側方へ突出する上下一対のブラケット
１２６．１２８が固着され、このブラケン）１２６．１
２８にはキャスタ軸１３０が支持されている。このキャ
スタ軸１３０の下端にはギヤスタアーム１３２によって
キャスタ輪１２２が保持され、キャスタ輪１２２はこの
キャスタ軸１３０を中心にして回動可能となっている。Next, the caster wheels 122, 122 according to the present invention will be explained. A pair of left and right caster wheels 122.122 are connected to the body 3.
4 near the left and right corners of the front. That is, as shown in Fig. 5.10, the lower tube 12 is connected to the front tube 1.
4 and is elastically curved toward the center of the body, and this curved portion and the vicinity of the center of the front tube 14 are connected by caster support members 124. This caster support member 1
A pair of upper and lower brackets 126.128 protruding outward from the body are fixed to 24, and this bracket 126.1
A caster shaft 130 is supported on the shaft 28 . A caster wheel 122 is held at the lower end of this caster shaft 130 by a gear star arm 132, and the caster wheel 122 is rotatable around this caster shaft 130.

なおキャスタ輪１２２は、第５図に示すように走行可能
な静止状態において路面から僅かに浮上るようにその高
さが決められている。As shown in FIG. 5, the height of the caster wheels 122 is determined so that they are slightly raised above the road surface in a stationary state in which the vehicle can run.

この実施例によれば車椅子Ａで乗り込む際には、ハンド
ルカバー６２に設けたダウンスイッチ７６により予め車
体後部を下げておく。この時には車ＩＬめ８６は第８図
に示すように下方に回動した位置にあるので、車椅子Ａ
はこの車止め８６を乗越えるようにして床面３６内に乗
込む。車椅子Ａの主輪Ｃが車止め８６を乗越えた状態で
アップスイッチ７４をオンとすれば、車体後部は上昇し
第９図のように走行可能となる。この時ブレーキＥをか
けておけば車椅子ＡはブレーキＥと車止め８６とにより
その移動が規制されることは前記したとうりである。According to this embodiment, when getting into the wheelchair A, the rear part of the vehicle body is lowered in advance by a down switch 76 provided on the handle cover 62. At this time, the vehicle IL eye 86 is in a downwardly rotated position as shown in FIG.
rides into the floor surface 36 by climbing over this bollard 86. If the up switch 74 is turned on with the main wheels C of the wheelchair A over the bollard 86, the rear part of the wheelchair A rises and the wheelchair A can travel as shown in FIG. 9. As described above, if the brake E is applied at this time, the movement of the wheelchair A is restricted by the brake E and the wheel stopper 86.

そしてスタータボタン１２Ｂを押せば、電動スタータ（
図示せず）によりエンジン９２は始動される。ハンドル
パー５８のグリップに組込まれたアクセルによりエンジ
ン９２を加速し、エンジン９２の回転が上昇すれば遠心
クラッチ９８が接続し、後輪６４に回転が伝達され走行
開始する。なおエンジンには車速を一定速（例えば１６
Ｋｍ／ｈ）以下に規制するガバナ装置を設けておくのが
望ましい。Then, if you press the starter button 12B, the electric starter (
(not shown), the engine 92 is started. The engine 92 is accelerated by an accelerator built into the grip of the handlebar 58, and when the rotation of the engine 92 increases, the centrifugal clutch 98 is connected, the rotation is transmitted to the rear wheels 64, and the vehicle starts running. Note that the engine has a constant vehicle speed (for example, 16
It is desirable to provide a governor device that regulates the speed to below Km/h.

前起立壁３８および左右起立壁４０．４０はハンドルパ
ー５８より部分に低いので、車椅子Ａに着座した運転溝
はボデー３４の周囲も楽に視認でき運転が容易になると
共に、開放感に富むので楽しく運転することができる。Since the front standing wall 38 and the left and right standing walls 40, 40 are partially lower than the handlebar 58, the driver seated in the wheelchair A can easily see the surroundings of the body 34, making driving easier and providing a sense of openness, making driving more enjoyable. Can drive.

また起立壁３８．４０が低いため車体重心が低くなり安
定性が良い。Also, since the upright walls 38, 40 are low, the center of gravity of the vehicle is low, resulting in good stability.

また後輪６４の車軸は左右独立で、床面３６はこの車軸
より下方に位置するから、床面３６の低床化により低重
心化が促進される。Furthermore, since the axles of the rear wheels 64 are independent on the left and right sides, and the floor surface 36 is located below this axle, the lowering of the floor surface 36 promotes lowering of the center of gravity.

また第８，９図から明らかなように、左右起立壁４０は
車椅子Ａの主輪Ｃの車軸よりも低い。一般に車椅子Ａを
乗入れる際に主輪Ｃの外側に固定された手押しリングＤ
（第１．８．９図）を手で押すと、通常の体格の人では
手は主輪Ｃの車軸付近にくる（第８図）。しかし左右起
ゲ壁４０は主輪Ｃのｉｉｉ軸より低いので手は起立壁４
０に当たることがなく操作性が良い。従って起立壁４０
と主輪Ｃとの間隙を部分小さくできボデー幅を狭くする
ことが可能になる。Further, as is clear from FIGS. 8 and 9, the left and right upright walls 40 are lower than the axle of the main wheels C of the wheelchair A. Generally, a push ring D is fixed to the outside of the main wheels C when wheelchair A is entered.
(Fig. 1.8.9) If you push it with your hand, a person of normal build will have his hand near the axle of the main wheel C (Fig. 8). However, since the left and right raised walls 40 are lower than the iii axis of the main wheel C, the hands should be placed on the raised walls 4.
It never hits 0 and has good operability. Therefore, the standing wall 40
The gap between the main wheel C and the main wheel C can be partially reduced, and the body width can be narrowed.

特に本実施例では、第３図から明らかなように、前輪４
６の接地点と左右後輪６４の接地点とを通る２本の直線
間に、車椅子Ａの主輪Ｃおよび補助輪Ｂの各接地点が位
置するように、車椅子Ａの搭載位置が決められている。In particular, in this embodiment, as is clear from FIG.
The mounting position of wheelchair A is determined such that the respective grounding points of the main wheels C and auxiliary wheels B of wheelchair A are located between two straight lines passing through the grounding points of wheel 6 and the grounding points of left and right rear wheels 64. ing.

このため車椅子Ａによる荷重はボデー３に対して常に車
体姿勢を安定させる方向に加わることになる。このため
車体安定性が一層向上する。Therefore, the load from the wheelchair A is always applied to the body 3 in a direction that stabilizes the vehicle body posture. This further improves vehicle stability.

以りの実施例では後輪６４を空気シリンダ７２でＬＦ動
可能としたから、乗降時に床面３６後縁が路面に接近す
るので、乗降が一層容易になる。In the embodiments described above, the rear wheels 64 are made capable of LF movement using the air cylinders 72, so that the rear edge of the floor surface 36 approaches the road surface when getting on and off, making it easier to get on and off.

しかし本発明は後輪がこのように上下動しないものは勿
論、床面後端に蝶番により取付けられたはね上げ式乗降
板を設けたものも含む。However, the present invention includes not only a vehicle in which the rear wheels do not move up and down in this manner, but also a vehicle in which a flip-up board is attached to the rear end of the floor surface with a hinge.

また床面３８の後部には車止め８６を設けたり、走行時
にこの後部を閉じる開閉可能な扉などを設けておくのが
望ましいが、本発明はこれらを持たないものも含む。Further, it is desirable to provide a car stopper 86 at the rear of the floor surface 38 or a door that can be opened and closed to close the rear part during running, but the present invention also includes vehicles that do not have these.

以りの各実施例は原動機としてエンジン９２を用いるの
で走行距離を大きくできるが、電動モータを原動機とし
て用いてもよい。In each of the embodiments described above, the engine 92 is used as the prime mover, so the traveling distance can be increased, but an electric motor may also be used as the prime mover.

またボデー３６は一体成形とするのが望ましいが、適宜
分割した部材を集めて組立てるようにしてもよい。Although it is desirable that the body 36 be integrally molded, it may be assembled by assembling appropriately divided members.

前記の実施例ではキャスタ輪１２２はキャスタ軸１３０
回りに自由に回動するので、走行中にキャスタ輪１２２
がキャスタ軸１３０回りに回動して騒音を発生すること
が有り得る。この問題に対しては、このキャスタ輪１２
２のキャスタ軸１３０回りの回動に適度の抵抗を付与す
ることが１つの解決策である。また他の解決策として、
キャスタ輪をキャスタ軸方向すなわち旧下方向に僅かに
移動可能とし、接地してキャスタ輪がＬ方へ押圧された
時だけキャスタ軸回りに回動自在とし路面から離れてｆ
方へ復帰した時にはキャスタ軸回りの回動を制限するよ
うに構成することが考えられる。またさらに他の解決策
として、ばね等によりキャスタ輪に常に直進方向への復
帰習性を付’Ｐ　Ｌ、キャスタ輪が路面から離れた時に
はばねによって直進位置に保持する構成も可能である。In the embodiment described above, the caster wheel 122 is connected to the caster shaft 130.
Since it rotates freely, the caster wheels 122
may rotate around the caster shaft 130 and generate noise. For this problem, this caster wheel 12
One solution is to provide appropriate resistance to the rotation around the caster shaft 130 of No. 2. As another solution,
The caster wheel can be moved slightly in the direction of the caster axis, that is, in the downward direction, and can be rotated around the caster axis only when it touches the ground and the caster wheel is pressed in the L direction.
It is conceivable that the caster be constructed so that rotation around the caster axis is restricted when the caster returns to its original position. As another solution, it is also possible to use a spring or the like to give the caster wheel a habit of always returning to the straight-ahead direction, and to hold the caster wheel in the straight-ahead position when it leaves the road surface.

（発明の効果） 本発明は以りのように、ボデーの前部の左右角部付近に
、車体の静止状態で路面から離れるように左右一対のキ
ャスタ輪を設けたものであるから、うねりのある路面を
走行中、前輪側方の低い床面に路面が接触しようとして
も、それ以前にキャスタ輪が接地するためスムーズに乗
り越えることができる。またキャスタ輪は通常は路面か
ら離れているので３輪車本来の特徴である小回り性は１
−分発揮できる。(Effects of the Invention) As described above, the present invention is provided with a pair of left and right caster wheels near the left and right corners of the front part of the body so that they are separated from the road surface when the vehicle body is stationary. While driving on a certain road surface, even if the road surface comes into contact with the low floor surface on the side of the front wheels, the caster wheels touch the ground before that happens, allowing the vehicle to get over the surface smoothly. Also, since the caster wheels are usually far from the road surface, the ability to turn around, which is the original characteristic of three-wheeled vehicles, is reduced to 1.
- can be used for a long time.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例の使用状態を示す斜視図、第
２図はその車輌の後面図、第３図は同じく平面図、第４
．５図は車”軸構造を示す平面図と側面図、第６図は空
気圧系統図、第７図は動力系統図、第８図は車椅子の乗
降動作説明図、第９図はその乗車状態の説明１（、また
第１０図はキャスタ輪付近の斜視図である。 ３４・・・ボデー、 ３６・・・床面。 ３８・・・前起立壁、 ４０・・・左右起立壁、 ４６・・・操向前輪、 ５０・・・ハンドル軸、 ６４・・・後輪、 ９２・・・原動機としてのガソリンエンジン、１２２・
・・キャスタ輪、 １３０・・・キャスタ軸。Fig. 1 is a perspective view showing an embodiment of the present invention in use, Fig. 2 is a rear view of the vehicle, Fig. 3 is a plan view, and Fig. 4
．． Figure 5 is a plan view and side view showing the car's shaft structure, Figure 6 is a pneumatic system diagram, Figure 7 is a power system diagram, Figure 8 is an explanatory diagram of how the wheelchair gets on and off, and Figure 9 shows its riding state. Explanation 1 (and Figure 10 is a perspective view of the vicinity of the caster wheels. 34...Body, 36...Floor surface. 38...Front standing wall, 40...Right and left standing walls, 46... - Steering front wheel, 50... Handle shaft, 64... Rear wheel, 92... Gasoline engine as prime mover, 122...
... Caster wheel, 130... Caster shaft.

Claims (1)

【特許請求の範囲】[Claims] 略平板状の床面の前方および左右側方をほぼ連続的に囲
む前起立壁および左右起立壁を有するボデーと、前記前
起立壁から上方へ立上がるハンドル軸と、前記前起立壁
に収容された１個の操向前輪と、前記左右起立壁に設け
られた左右一対の後輪とを備え、後方に向って開いた前
記床面の後部から乗降可能とした低床小型３輪車におい
て、前記ボデーの前部の左右角部付近に路面から適宜距
離を離して左右一対のキャスタ輪を設けたことを特徴と
する低床小型３輪車。A body having a front upright wall and left and right upright walls that substantially continuously surround the front and right and left sides of a substantially flat floor surface, a handle shaft that rises upward from the front upright wall, and a handle shaft that is housed in the front upright wall. A low-floor small three-wheeled vehicle, which is equipped with one steerable front wheel and a pair of left and right rear wheels provided on the left and right upright walls, and can be entered and exited from the rear of the floor surface that opens toward the rear, A low-floor small three-wheeled vehicle, characterized in that a pair of left and right caster wheels are provided near the left and right corners of the front part of the body at an appropriate distance from the road surface.