JP2588973B2 - Small electric car - Google Patents

Small electric car

Info

Publication number
JP2588973B2
JP2588973B2 JP1226886A JP22688689A JP2588973B2 JP 2588973 B2 JP2588973 B2 JP 2588973B2 JP 1226886 A JP1226886 A JP 1226886A JP 22688689 A JP22688689 A JP 22688689A JP 2588973 B2 JP2588973 B2 JP 2588973B2
Authority
JP
Japan
Prior art keywords
vehicle body
rear wheel
grounding
vehicle
small electric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP1226886A
Other languages
Japanese (ja)
Other versions
JPH0390459A (en
Inventor
川端  権四郎
直明 佐藤
次郎 倉本
重則 木村
泰弘 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP1226886A priority Critical patent/JP2588973B2/en
Publication of JPH0390459A publication Critical patent/JPH0390459A/en
Application granted granted Critical
Publication of JP2588973B2 publication Critical patent/JP2588973B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、主として老人や歩行不自由者等が利用する
小型電動車に関し、詳しくは、車体に対して後車輪を、
緩衝装置を介して昇降作動自在に装着するとともに、車
体が後車輪周りで前上り揺動するに伴って接地すること
により車体前上り角が所定以上になることを規制する接
地体を設けた小型電動車に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a small electric vehicle mainly used by elderly people, people with walking disabilities and the like.
A small-sized body that is mounted so as to be able to move up and down freely through a shock absorber, and is provided with a grounding body that regulates the front-up angle of the vehicle body to a predetermined angle or more by grounding as the vehicle body swings forward and backward around the rear wheels. Related to electric vehicles.

〔従来の技術〕[Conventional technology]

従来、上記小型電動車においては、車体が後車輪周り
で前上り揺動するに伴って接地することにより車体前上
り角を規制する接地体を車体に固定して設けて、車体の
後転を未然に防止するよう構成したものが実用化されて
いる。
Conventionally, in the above-described small electric vehicle, a grounding body that regulates the front-up angle of the vehicle body is provided fixed to the vehicle body by being grounded as the vehicle body swings forward and rearward around the rear wheel, and the rearward rotation of the vehicle body is provided. A device configured to prevent such a problem has been put to practical use.

〔発明が解決しようとする課題〕[Problems to be solved by the invention]

上記小型電動車ではタイヤ車輪を使用することで走行
振動の吸収を行っているが、一般道路をはじめとして各
種の路面を走行する場合には凹凸や段差を通る機会も多
くなり、タイヤ車輪だけでは緩衝機能が不充分になりが
ちである。
The above small electric vehicle absorbs running vibration by using tire wheels, but when traveling on various road surfaces including ordinary roads, there are many opportunities to pass unevenness and steps, and tire wheels alone The buffer function tends to be insufficient.

そこで、座席の下方にあって最も車体荷重の作用する
後車輪にサスペンション機構を備えて乗り心地を向上す
る要望が生じてきたのであるが、単に後輪サスペンショ
ン機構を導入するだけでは、前述の車体後転阻止手段と
の相互関係に不具合が生じることが予想される。
Therefore, a demand has arisen to improve the ride comfort by providing a suspension mechanism on the rear wheel under the seat where the load on the vehicle body acts most. It is anticipated that a problem will occur in the interrelationship with the reverse rotation prevention means.

つまり、車体後部に後転防止用の接地体を固設した電
動車の後車輪にサスペンション機構を備えて後車輪を弾
性上下動可能に構成すると、操縦者の体重が大きい場合
には、その重さにより車体自体が低くなってしまう。こ
のため、車体が後車輪に対して相対的に下動した際、前
記接地体が地面に近づき過ぎ、時には地面につかえるこ
とによりサスペンション機能が損なわれたり、段差部分
を乗り越え難くなるおそれがある。又、接地体のつかえ
や機能低下を防止するために接地体を予め車体に対して
充分高く固設すると、前述の車体後転阻止機能が低下し
てしまうという問題があった。
In other words, if a rear wheel is equipped with a suspension mechanism on the rear wheel of an electric vehicle in which a grounding body for preventing rearward rotation is fixed at the rear part of the vehicle body so that the rear wheel can move up and down, if the weight of the pilot is large, the weight of the driver can be reduced. As a result, the vehicle body itself is lowered. For this reason, when the vehicle body moves down relative to the rear wheels, the ground contact body may come too close to the ground, and sometimes may touch the ground, thereby impairing the suspension function or making it difficult to get over the step. Further, if the grounding body is fixed sufficiently high in advance to the vehicle body in order to prevent the grounding body from being held or the function from being deteriorated, there is a problem in that the above-described vehicle body rearward rotation prevention function is deteriorated.

本発明は、このような点に着目してなされたものであ
って、前記接地体と後輪サスペンション機構を、それぞ
れの機能を充分に発揮することができるように装備する
ことで、車体後転阻止機能を良好に維持しながら、乗り
心地の良い小型電動車を提供することを目的とする。
The present invention has been made in view of such a point. By equipping the ground contact body and the rear wheel suspension mechanism so that the respective functions can be sufficiently exhibited, the vehicle body is rolled backward. It is an object of the present invention to provide a small-sized electric vehicle with good riding comfort while maintaining a good blocking function.

〔課題を解決するための手段〕[Means for solving the problem]

本発明にかかる小型電動車は、車体に対して後車輪
を、緩衝装置を介して昇降作動自在に装着するととも
に、車体が後車輪周りで前上り揺動するに伴って接地す
ることにより車体前上り角が所定以上になることを規制
する接地体を設けた小型電動車であって、前記接地体を
前記車体に対して上下位置変更可能に取付けると共に、
前記後車輪の昇降作動に伴って前記接地体を前記後車輪
と同方向に昇降操作するように、前記後車輪と接地体と
を連係する連係部材を設けてあることを特徴構成とす
る。
In the small electric vehicle according to the present invention, the rear wheels are mounted on the vehicle body so as to be able to move up and down via a shock absorbing device, and the vehicle body comes into contact with the vehicle body as it swings forward and upward around the rear wheels, so that the vehicle is in front of the vehicle body. A small electric vehicle provided with a grounding body that regulates an ascending angle to be equal to or greater than a predetermined value, wherein the grounding body is attached to the vehicle body so that a vertical position can be changed, and
A linking member for linking the rear wheel and the grounding body is provided so that the grounding body is moved up and down in the same direction as the rear wheel in accordance with the lifting and lowering operation of the rear wheel.

かかる特徴構成による作用・効果は次の通りである。 The operation and effect of this characteristic configuration are as follows.

〔作 用〕(Operation)

前述のように構成すると、後車輪が車体に対し上下動
するに伴って、前記連係部材に連係された前記接地体も
同方向に上下動することになり、車体が対地下降しても
その対地下降に伴い機体に対して連係部材が相対的に上
方に移動するため、その連係部材と連動して上下動する
接地体が地面につかえることはなく、後輪緩衝装置によ
るサスペンション機能を低下させることはない。また、
車体の前上り角は、操縦者の体重に違い等、車体荷重の
変化に伴う車体の対地高さ変化に拘わらず略一定とな
る。
With the above-described configuration, as the rear wheel moves up and down with respect to the vehicle body, the grounding body linked to the linking member also moves up and down in the same direction. Since the linking member moves upward relative to the fuselage as it descends, the grounding body that moves up and down in conjunction with the linking member does not touch the ground, and the suspension function of the rear wheel shock absorber is reduced. There is no. Also,
The forward ascending angle of the vehicle body is substantially constant irrespective of a change in the ground height of the vehicle body due to a change in the vehicle body load, such as a difference in the weight of the driver.

〔発明の効果〕〔The invention's effect〕

以上のように、本発明によれば後車輪のサスペンショ
ン機構を接地体と共に上下変更できるように連係するこ
とで、操縦者の体重の軽重や積載荷物の多少に拘わらず
サスペンション機能と接地体による車体前上り角規制機
能を夫々確実に発揮させることができるので、車体が前
上がり状態になっても、接地体の接地による前上り角の
規制が十分なされ、又、乗り心地の良好な小型電動車を
提供することができた。
As described above, according to the present invention, by linking the suspension mechanism of the rear wheel so that it can be changed up and down together with the grounding body, the suspension function and the vehicle body by the grounding body can be used regardless of the weight of the driver's weight or the amount of loaded luggage. Since the front-up angle restriction function can be surely exerted, the front-up angle can be sufficiently regulated by the grounding of the grounding body even if the vehicle body is in the front-up state, and a small electric vehicle with good ride comfort. Could be provided.

〔実施例〕〔Example〕

以下、本発明の実施例を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

車体(1)の前部にハンドル(2)によって操向され
る単一の前車輪(3)を設けると共に、車体(1)の後
部に左右一対の後車輪(4),(4)、座席(5)、走
行用のミッションケース(6)、走行用電動モータ
(7)、及びバッテリー(8)が備えられて三輪型の小
型電動車が構成されている。
A single front wheel (3) steered by a steering wheel (2) is provided at a front portion of the vehicle body (1), and a pair of left and right rear wheels (4), (4) and a seat are provided at a rear portion of the vehicle body (1). (5) A traveling transmission case (6), a traveling electric motor (7), and a battery (8) are provided to constitute a small three-wheeled electric vehicle.

第1図及び第2図に前記後車輪(4)の支持構造が示
されている。
1 and 2 show a support structure for the rear wheel (4).

前記電動モータ(7)を連結したミッションケース
(6)には図示しないが電動モータ(7)からの出力を
減速するギヤ減速機構、左右の車軸(9),(9)に動
力を分岐伝達するデフ機構、等のギヤ伝動機構が組込ま
れると共に、電動モータ(7)が作動不能になった場合
の手押し移動や介添者による手押し移動を軽快に行える
ようにするために、ギヤ伝動機構中にクラッチ(10)が
備えられている。このクラッチ(10)は、シフトギヤ
(11)を伝動ギヤ(12)に咬合・離脱することで車軸
(9),(9)と電動モータ(7)との連動を断続する
ものであって、シフトギヤ(11)はスプリング(13)に
よって常に咬合伝動位置に付勢保持されている。このシ
フトギヤ(11)をスプリング(13)に抗して咬合解除位
置にシフトするシフトフォーク(14)は、ミッションケ
ース壁に貫通支持したフォーク軸(15)の内部に抜止め
状に遊嵌支持されていて、フォーク軸(15)を外部から
回動操作することで、フォーク軸(15)の外端に固着し
た端面カム部材(16)を、ミッションケース壁に突設し
た端面カムボス(17)に対して相対回動させて、フォー
ク軸(15)を正逆にシフト操作するようになっている。
Although not shown, the transmission case (6) to which the electric motor (7) is connected is a gear reduction mechanism for reducing the output from the electric motor (7), and the power is branched and transmitted to the left and right axles (9) and (9). A gear transmission mechanism such as a differential mechanism is incorporated, and a clutch is provided in the gear transmission mechanism in order to facilitate the manual movement when the electric motor (7) becomes inoperable or the manual movement by an attendant. (10) is provided. The clutch (10) intermittently interlocks the axles (9), (9) with the electric motor (7) by engaging and disengaging the shift gear (11) with the transmission gear (12). (11) is always biased and held at the occlusal transmission position by the spring (13). A shift fork (14) that shifts the shift gear (11) to the disengagement position against the spring (13) is loosely fitted and supported in a fork shaft (15) inside the fork shaft (15) penetrated and supported by the transmission case wall. By rotating the fork shaft (15) from the outside, the end cam member (16) fixed to the outer end of the fork shaft (15) is moved to the end cam boss (17) protruding from the transmission case wall. The fork shaft (15) is shifted forward and backward by relative rotation.

車体(1)の骨格を構成する金属パイプ製の車体フレ
ーム(18)の後部は逆L字状に屈曲形成され、この車体
フレーム(18)の左右に支点(a)を中心に上下揺動可
能に後車輪(4)を支持し、かつ、その後車輪(4)を
後述する接地体(27)と連係させるための連係部材(1
9)が枢着されている。この連係部材(19)は、後向き
アーム状に形成され、各連係部材(19)の下面に左右の
車軸(9)が軸受け(20)を介して支架されている。
又、車体フレーム(18)の上部と前記連係部材(19)と
にわたってコイルスプリングからなる緩衝装置(21)を
外挿支持したサスペンションロッド(22)が架設され
て、後車輪(4)をミッションケース(6)及び電動モ
ータ(7)ごと連係部材(19)を介して昇降自在に弾性
支持するサスペンション機構(A)が構成されている。
The rear portion of a metal pipe body frame (18) constituting the skeleton of the vehicle body (1) is bent in an inverted L-shape, and can swing up and down around the fulcrum (a) on the left and right sides of the body frame (18). And a linking member (1) for supporting the rear wheel (4) and linking the wheel (4) with a later-described grounding body (27).
9) is pivoted. The link member (19) is formed in a rearward arm shape, and left and right axles (9) are supported on the lower surface of each link member (19) via a bearing (20).
In addition, a suspension rod (22) which extrapolates and supports a shock absorber (21) made of a coil spring is provided over the upper part of the body frame (18) and the linking member (19), and the rear wheel (4) is connected to the transmission case. A suspension mechanism (A) is configured to elastically support the (6) and the electric motor (7) so as to be able to move up and down freely via a linking member (19).

前記サスペンションロッド(22)はその上端が前記車
体フレーム(18)に支点b)を介して揺動自在に枢着さ
れると共に、その下部が連係部材(19)に枢着した回動
ピン(23)のボス部(23a)にスライド自在に貫通支承
され、サスペンションロッド(22)に外挿した緩衝装置
(21)の下端が前記ボス部(23a)に受止められてい
る。又、緩衝装置(21)の上端はサスペンションロッド
(22)の上部に外嵌したカラー(24)に受止め支持され
ている。このカラー(24)は、ワイヤ(25)を介して図
外の手元レバーに連係されていて、カラー(24)の固定
位置を調節して緩衝装置(21)のコイルスプリングの圧
縮量を変更することで、操縦者が好みのクッション性を
選択できるようになっている。又、回動ピン(23)のボ
ス部(23a)にはセットボルト(26)が備えられてい
て、これを締込んでサスペンションロッド(22)のスラ
イドを阻止することで、サスペンション機構(A)を必
要に応じてロックすることが可能となっている。
The upper end of the suspension rod (22) is pivotally connected to the vehicle body frame (18) via a fulcrum b), and the lower end of the suspension pin (22) is pivotally connected to a link member (19). ) Is slidably supported by the boss (23a), and the lower end of the shock absorber (21) extrapolated to the suspension rod (22) is received by the boss (23a). The upper end of the shock absorber (21) is received and supported by a collar (24) which is fitted over the suspension rod (22). This collar (24) is linked to a hand lever (not shown) via a wire (25), and adjusts the fixed position of the collar (24) to change the compression amount of the coil spring of the shock absorber (21). This allows the pilot to select the desired cushioning property. The boss portion (23a) of the rotation pin (23) is provided with a set bolt (26), which is tightened to prevent the suspension rod (22) from sliding, so that the suspension mechanism (A) Can be locked as needed.

車体(1)の後部には、車体(1)が後車輪(4)周
りで前上り揺動した際に、車体(1)の最大前上り角を
接地規制して車体(1)の後転を防止するための接地体
(27)が備えられている。
At the rear of the vehicle body (1), when the vehicle body (1) swings forward around the rear wheels (4), the maximum front ascent angle of the vehicle body (1) is restricted to the ground, and the vehicle (1) is rearwardly rotated. A grounding body (27) is provided to prevent the occurrence of the grounding.

この接地体(27)は、上端を車体フレーム(18)に支
点(c)周りに上下揺動自在に枢支連結した牽制アーム
(28)と、その下端に遊転自在に備えた接地輪(29)と
からなり、前記後車輪(4)の昇降作動に伴って接地体
(27)を後車輪(4)の昇降作動方向と同方向に昇降操
作する連係部材(19)に連係されている。そして、前記
牽制アーム(28)に形成した長孔(30)と連係部材(1
9)が備える連結具としてのピン(31)とを係合するこ
とで、連係部材(19)の昇降に伴って接地体(27)も同
方向に昇降変位し、かつ、連係部材(19)の昇降停止に
よって接地体(27)が車体(1)に対して固定されるよ
うに構成されている。
The grounding body (27) includes a restraining arm (28) having an upper end pivotally connected to the vehicle body frame (18) so as to be vertically swingable around a fulcrum (c), and a grounding wheel (freely provided at the lower end thereof). 29), which is linked to a linking member (19) for raising and lowering the ground contacting body (27) in the same direction as the raising and lowering operation of the rear wheel (4) with the raising and lowering operation of the rear wheel (4). . Then, the elongated member (30) formed in the restraint arm (28) is linked to the linking member (1).
By engaging a pin (31) as a connecting tool provided in 9), the grounding body (27) is also displaced up and down in the same direction as the linking member (19) moves up and down, and the linking member (19) The grounding body (27) is fixed to the vehicle body (1) by stopping the vertical movement of the vehicle.

上記構成によれば、後車輪(4)は接地体(27)に邪
魔されることなく自由に昇降することができ、又、後車
輪(4)が車体(1)に対して上昇しても接地輪(29)
の接地によって規制される車体前上り角(θ)は、後車
輪(4)が下降している場合のそれとあまり変わること
がない。
According to the above configuration, the rear wheel (4) can freely move up and down without being obstructed by the ground contact body (27), and even if the rear wheel (4) rises with respect to the vehicle body (1). Grounding wheel (29)
Of the vehicle body, which is regulated by the ground contact, does not change much from that when the rear wheel (4) is descending.

尚、実施例では後車輪(4)を昇降自在に支持する連
係部材(19)を単に上下揺動させ、かつ、接地体(27)
も同様に上下揺動させる場合を示したが、連係部材(1
9)及び接地体(27)をリンク機構を用いて平行に昇降
させることもできる。
In the embodiment, the linking member (19) for supporting the rear wheel (4) so as to be able to move up and down is simply swung up and down, and the grounding body (27)
Similarly, the case of vertically swinging is shown, but the linking member (1
9) and the grounding body (27) can be raised and lowered in parallel using a link mechanism.

又、連係部材(19)と接地体(27)とを連係する連結
具としては上記のようにピン(31)を用いる他に、連係
ロッドやリンクを用いることもできる。
Further, as a connecting tool for linking the linking member (19) and the grounding body (27), in addition to using the pin (31) as described above, a linking rod or link may be used.

尚、特許請求の範囲の項に図面との対照を便利にする
為に符号を記すが、該記入により本発明は添付図面の構
造に固定されるものではない。
In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings.

【図面の簡単な説明】[Brief description of the drawings]

図面は本発明に係る小型電動車の実施例を示し、第1図
は後輪サスペンション機構を示す側面図、第2図は後車
輪支持構造を示す一部切欠き後面図、第3図は小型電動
車の全体側面図である。 (1)……車体、(4)……後車輪、(19)……連係部
材、(21)……緩衝装置、(27)……接地体。
FIG. 1 shows an embodiment of a small electric vehicle according to the present invention. FIG. 1 is a side view showing a rear wheel suspension mechanism, FIG. 2 is a partially cutaway rear view showing a rear wheel support structure, and FIG. It is the whole electric vehicle side view. (1) ... body, (4) ... rear wheel, (19) ... linking member, (21) ... shock absorber, (27) ... grounding body.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 木村 重則 大阪府堺市石津北町64番地 久保田鉄工 株式会社堺製造所内 (72)発明者 山本 泰弘 大阪府堺市石津北町64番地 久保田鉄工 株式会社堺製造所内 (56)参考文献 特開 昭58−164484(JP,A) 実開 昭63−35684(JP,U) 実開 昭60−131482(JP,U) 実開 昭59−185183(JP,U) 実公 平3−26980(JP,Y1) 実公 昭49−4807(JP,Y2) ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Shigenori Kimura 64 Ishizu-Kitacho, Sakai City, Osaka Prefecture Kubota Iron Works Co., Ltd. In-house (56) References JP-A-58-164484 (JP, A) JP-A 63-35684 (JP, U) JP-A 60-131482 (JP, U) JP-A 59-185183 (JP, U) JIJI 3-26980 (JP, Y1) JIJOG 49-4807 (JP, Y2)

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】車体(1)に対して後車輪(4)を、緩衝
装置(21)を介して昇降作動自在に装着するとともに、
車体(1)が後車輪(4)周りで前上り揺動するに伴っ
て接地することにより車体前上り角が所定以上になるこ
とを規制する接地体(27)を設けた小型電動車であっ
て、前記接地体(27)を前記車体(1)に対して上下位
置変更可能に取付けると共に、前記後車輪(4)の昇降
作動に伴って前記接地体(27)を前記後車輪(4)と同
方向に昇降操作するように、前記後車輪(4)と接地体
(27)とを連係する連係部材(19)を設けてある小型電
動車。
1. A rear wheel (4) is mounted on a vehicle body (1) via a shock absorber (21) so as to be able to move up and down freely.
A small electric vehicle provided with a grounding body (27) for restricting the front-up angle of the vehicle body from reaching a predetermined angle or more by grounding as the vehicle body (1) swings forward around the rear wheels (4). The grounding body (27) is attached to the vehicle body (1) so that the vertical position can be changed, and the grounding body (27) is attached to the rear wheel (4) as the rear wheel (4) moves up and down. A small electric vehicle provided with a linking member (19) for linking the rear wheel (4) and the grounding body (27) so as to move up and down in the same direction.
JP1226886A 1989-08-31 1989-08-31 Small electric car Expired - Fee Related JP2588973B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1226886A JP2588973B2 (en) 1989-08-31 1989-08-31 Small electric car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1226886A JP2588973B2 (en) 1989-08-31 1989-08-31 Small electric car

Publications (2)

Publication Number Publication Date
JPH0390459A JPH0390459A (en) 1991-04-16
JP2588973B2 true JP2588973B2 (en) 1997-03-12

Family

ID=16852125

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1226886A Expired - Fee Related JP2588973B2 (en) 1989-08-31 1989-08-31 Small electric car

Country Status (1)

Country Link
JP (1) JP2588973B2 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS494807U (en) * 1972-04-15 1974-01-15
JPS58164484A (en) * 1982-03-24 1983-09-29 サン・ケミカル株式会社 Preventive device for turning sideway in motorcycle
JPS59185183U (en) * 1983-05-28 1984-12-08 土江 公裕 Motorcycle auxiliary wheel device
JPS60131482U (en) * 1984-02-14 1985-09-03 スズキ株式会社 rear multiple wheel vehicle
JPS6335684U (en) * 1986-08-26 1988-03-08
JPH055658Y2 (en) * 1989-07-26 1993-02-15

Also Published As

Publication number Publication date
JPH0390459A (en) 1991-04-16

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