JP2008286380A - Differential of three-wheel vehicle - Google Patents
Differential of three-wheel vehicle Download PDFInfo
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- JP2008286380A JP2008286380A JP2007158036A JP2007158036A JP2008286380A JP 2008286380 A JP2008286380 A JP 2008286380A JP 2007158036 A JP2007158036 A JP 2007158036A JP 2007158036 A JP2007158036 A JP 2007158036A JP 2008286380 A JP2008286380 A JP 2008286380A
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- gear
- shaft
- differential
- housings
- spur
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Abstract
Description
本発明は三輪車等の後二輪を駆動して走行する乗物に関する物である。 The present invention relates to a vehicle that travels by driving rear two wheels such as a tricycle.
従来の差動装置は概ね傘型歯車を使用して差動装置を構成しているが、傘型歯車は高価で量産に向かなく、製品高となり、扱い難い。 Conventional differential gears generally use a bevel gear, but the differential gear is expensive, unsuitable for mass production, has a high product, and is difficult to handle.
本発明は傘型歯車に替えて安価で量産の可能な平歯車を使って差動装置を実現しようとするものである。・ The present invention intends to realize a differential gear using a spur gear that can be mass-produced at low cost instead of a bevel gear.・
向かい合わせの椀型の二個のハウジングの内部で、車輪軸に結着の2個の大きい平歯車に2個の軸を持つ平遊星ピニオンをそれぞれ噛み合わせ、又、そのピニオン同士もかみ合わせてピニオンの二本の軸をハウジングにて支持して、ハウジングの回転を前記ピニオンを介して車輪軸に回転を伝えて、差動装置を構成する。Two planetary pinions with two shafts meshed with two large spur gears attached to the wheel shaft, and two pinions meshed with each other, and the pinions are also meshed with each other. These two shafts are supported by the housing, and the rotation of the housing is transmitted to the wheel shaft through the pinion to constitute a differential device.
以後ピニオンを遊星歯車と称すThe pinion is hereinafter referred to as planetary gear
以下図によって説明する。図1は本発明を三輪自転車に装着した図で1a、1bはハウジング、1cはハウジングを廻すギヤー、2a,2bは車輪軸、10a,10bは車輪、11は、ペダル12の回転をハウジング1c、に伝えるチェーン。This will be described below with reference to the drawings. FIG. 1 shows the present invention mounted on a three-wheeled bicycle. 1a, 1b are housings, 1c are gears that rotate the housing, 2a, 2b are wheel shafts, 10a, 10b are wheels, 11 is the rotation of the pedal 12 in the housing 1c, Chain to tell.
図2、図3、は本発明の外観図で1a,1bはハウジング、1c、はハウジング1bと一体の回転受けのギヤー、2a、2bは左、右車輪軸、4c,5cは遊星歯車4a,5aの軸、7a,7bは軸4cの支持穴、8a,8bは軸5cの支持穴、9は、1a,1b,を貫くノックピン、61、62、63,64は1a,1b、を結着のボルトである2 and 3 are external views of the present invention.
図4は本発明を軸方向から見た図で、ハウジング内部の歯車の配置を示す、図5は内部構造を説明の為、図4のA−A′でハウジング1a,1b、だけを割いた図である。図5に於いて、3aは、車軸2aと結合の平歯車、3bは、車軸2bと結合の平歯車、4aは遊星歯車、4bはスペーサー、4cは4a,4bの軸である。FIG. 4 is a view of the present invention viewed from the axial direction, and shows the arrangement of gears inside the housing. FIG. 5 is a diagram illustrating only the
5aは遊星歯車、5bはスペーサー、5cは5a,5bの軸である。4aは一端が平大歯車3aと噛み合い5aは一端が平大歯車3bと噛み合い、且つ、4aと5aが他端で互いに噛み合う位置に、軸4c,5cがあり、ハウジング1a,1b,の支持穴7a7b,8a、8bが軸4c、5cの両端末を支持する。5a is a planetary gear, 5b is a spacer, and 5c is a shaft of 5a and 5b. 4a has one end meshed with the large gear 3a, one end meshed with the
図6は遊星歯車4a,5aが上部に位置する時の、軸方向から見た図である。図7は図6のB−B′でハウジングだけを割いた図で,歯車3a,3bに結着の2a,2b,の軸が向き合って夫々突き出て、3a,3bの間に隙間を形成して、遊星歯車4a,5aの噛み合いの場を作る。又4b,5b、は4a,5aが軸方向に所定位置で噛み合う為のスペーサーである、FIG. 6 is a view seen from the axial direction when the
次に作用について説明する。ベルト11に依って1cを回転すると、直進の場合、ハウジング1a,1b、が回転して軸4c,5cがそれについて廻り、その回転が遊星歯車4a,5aを介して車輪軸2a,2bの歯車3a,3bを同時に廻し、車輪10a,10bが同じ回転をする。Next, the operation will be described. When 1c is rotated by the
今、仮りに車輪10b側に旋回すると10bが減速し、歯車3bが減速するので遊星歯車5aはハウジングによって強制的に引き回され、3b上を転がりながら回転を起こし、その回転を遊星歯車4aに伝える。4aは回転しながら転がり、回転を歯車3aに伝達して、3aは増速する。これに依り車輪10aは10bの減速分回転が早まり、いわゆる差動効果が生ずる。Now, if it turns to the wheel 10b side, 10b will decelerate and the gear 3b will decelerate, so that the
反対に、車輪10aが減速の場合も前記と同様な作用で逆の差動が生じて、10bは10aの減速分増速する。又、極端な例として、一方の車輪が停止の時は、反対側の車輪は回転受けギヤー1cの回転の二倍の回転をする。On the other hand, when the wheel 10a is decelerated, a reverse differential is generated by the same operation as described above, and 10b is accelerated by the deceleration of 10a. As an extreme example, when one of the wheels is stopped, the opposite wheel rotates twice the rotation of the rotation receiving gear 1c.
平歯車は傘型歯車に比べて製作費が安く、又、車輪軸、遊星歯車軸が平行であるのでハウジングの軸受け加工が容易である。従って平型歯車を採用する事は自転車のような小動力車にとっては、構造簡単で、軸が交錯して加工費が嵩み価格が高い傘型歯車に比べて製作費が安くなり有利であるThe spur gear is less expensive to manufacture than the bevel gear and the wheel shaft and the planetary gear shaft are parallel so that the housing can be easily machined. Therefore, the adoption of a flat gear is advantageous for a small power vehicle such as a bicycle because the structure is simple, the shafts are crossed, the processing cost is high, and the manufacturing cost is lower than that of the expensive bevel gear.
以下本発明の実施の形態を図2〜7に基ついて説明するHereinafter, embodiments of the present invention will be described with reference to FIGS.
椀型の底に当たる部が軸受けのハウジングに、軸端を少々突き出した平歯車3a,3bを固着した軸2a,2b,を1a,1bの軸受けに通し、ハウジングを向かい合わせる。3a,3b間は車軸が突出しているので図7に見る如く間隔が生ずる。軸4c,5cは長型の遊星歯車4a,5a、とスペーサー4b,5bの夫々通し軸となる。The
而して4aは3aと、5aは3bと噛み合わせ且つ3a,3bの間隙で4a,5aを噛み合わせて軸4c,5cの両端はハウジング1a,1bの支持穴7a7b,8a8bに固定する。その際4bと5bは4aが3bに、5aが3aに触れない様互い違いに4a,4bと共に4c,5cに取り付ける。Thus, 4a meshes with 3a and 5a meshes with 3b, and
9のノックピンは4c、5cを正しい位置に保持し、1a,1bを合わせ組み立てる時のガイドと、使用中1a,1bがずれて、歯車同士の噛み合いの不調のを防止する重要な役目を持つ。No. 9's knock pin holds 4c and 5c in the correct position, and has an important role of preventing the
1a ハウジング(左)
1b ハウジング(右)
1c 駆動受けギヤー
2a 車軸(左)
2b 車軸(右)
3a 車軸平歯車(左)
3b 車軸平歯車(右)
4a 遊星平歯車
4b スペーサー
4c 軸
5a 遊星平歯車
5b スペーサー
5c 軸
61 締め付けボルト
62 締め付けボルト
63 締め付けボルト
64 締め付けボルト
7a 軸取り付け穴
7b 軸取り付け穴
8a 軸取り付け穴
8b 軸取り付け穴
10a 車輪(左)
10b 車輪(右)
11 動力伝達チェーン
12 足こぎペダル1a Housing (Left)
1b Housing (right)
1c
2b Axle (right)
3a Axle spur gear (left)
3b Axle spur gear (right)
4a planetary spur
10b Wheel (right)
11 Power transmission chain 12 Foot pedal
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2007158036A JP2008286380A (en) | 2007-05-21 | 2007-05-21 | Differential of three-wheel vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007158036A JP2008286380A (en) | 2007-05-21 | 2007-05-21 | Differential of three-wheel vehicle |
Publications (1)
Publication Number | Publication Date |
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JP2008286380A true JP2008286380A (en) | 2008-11-27 |
Family
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JP2007158036A Pending JP2008286380A (en) | 2007-05-21 | 2007-05-21 | Differential of three-wheel vehicle |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011226629A (en) * | 2010-04-20 | 2011-11-10 | Fukuji Obata | Differential device of tricycle |
US10759047B1 (en) | 2016-10-19 | 2020-09-01 | Mitsubishi Electric Corporation | Speed reducer and robot |
-
2007
- 2007-05-21 JP JP2007158036A patent/JP2008286380A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011226629A (en) * | 2010-04-20 | 2011-11-10 | Fukuji Obata | Differential device of tricycle |
US10759047B1 (en) | 2016-10-19 | 2020-09-01 | Mitsubishi Electric Corporation | Speed reducer and robot |
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