JPH094692A

JPH094692A - Transmission for transport

Info

Publication number: JPH094692A
Application number: JP18762395A
Authority: JP
Inventors: Akira Konishi; 明小西; Yoko Hagiwara; 洋子萩原
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-06-20
Filing date: 1995-06-20
Publication date: 1997-01-07

Abstract

PURPOSE: To prevent a force applied to a pedal from changing largely by fitting a transmission, which can conduct shifting of speed automatically according to a change in load, onto a pedal shaft of a motor-equipped bicycle, electric chair, automated guided vehicle or the like. CONSTITUTION: This transmission is provided with a shifting rings 2 and 3 which can rotate, facing an outer periphery, a central rotating gear 5 which has an input shaft in it, and several planetary gears 6, 6 at the outer periphery. The input shaft 7 and an output shaft 8 are fitted on the side of the shifting rings 2 and 3 so as to protrude. A left screw 9 is screwed in the inner periphery of the shifting ring 2, and a right screw 11 is screwed in the inner periphery of the shifting ring 3. A central rotating gear 5 is formed with a right screw 14 and a left screw 13 screwed on a right and left from the center. The planetary gears 6, 6 at the outer periphery are formed with a right screw 16 and the left screw 17 screwed on the right and left from the center where the right screw 14 and the left screw 13 engage with each other. The central rotating gear 5 is formed with the input shaft 7 fitted on one end part and the output shaft 8 fitted on the other insertion shaft 15.

Description

Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、電動機付自転車、電動
車椅子等に使用される外周に回動自在となる変速環を設
けて内部に各々逆螺子を設けた回転歯車と、数個の遊星
歯車とを以て少ない部品により簡単な構成として出力軸
に減速された回転を与えるようにした運搬用変速装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary gear used for an electric bicycle, an electric wheelchair, etc., which is provided with a rotatable speed change ring on the outer periphery thereof and a reverse screw inside each, and a plurality of planetary gears. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission gearbox for providing a reduced rotation to an output shaft as a simple structure with a gear and a small number of parts.

【０００２】[0002]

【従来の技術】従来この種の電動用の変速装置は、大小
数組の歯車を噛み合わせて数段に変化させるものか、ま
た、ロール摩擦車を数組組合わせて数段に変速するも
の、或はクラツチ等を組み込んで変速する等の変速装置
は種々散見されている所である。2. Description of the Related Art Conventionally, an electric transmission of this kind is one in which a large number of small gears are meshed with each other to change the gears in several stages, or a combination of several roll friction wheels is combined in several gears. Alternatively, various transmissions such as a clutch and the like for shifting gears have been spotted.

【０００３】[0003]

【発明が解決しようとする課題】上記従来の変速装置
は、各々の構造が大変に複雑であると共に、多数の部品
を使用するため、正確な部品であつても破損しやすく、
且つ大変に高価てあると云う問題点があつた。本発明
は、これ等の従来の変速装置の欠点を解決するためのも
のであり、その主たる目的とする所は、入力軸と一体の
中心回転歯車に中央より左右螺子を一体に螺設し、この
左右螺子に噛み合う遊星歯車も左右螺子を各々螺設し、
これに噛み合う相対する変速環に左右螺子を螺設するこ
とによつて、少ない部品を以て回転速度の変速比を確実
にすると共に、故障を著しく少なく装置が容易な外観的
にも優れた運搬用変速装置を提供しようとするものであ
る。The above-mentioned conventional transmission has a very complicated structure, and since many parts are used, even accurate parts are easily damaged.
And there was a problem that it was very expensive. The present invention is to solve these drawbacks of conventional transmissions, and its main object is to integrally screw left and right screws from the center to a central rotating gear integrated with an input shaft, The planetary gears that mesh with these left and right screws also have left and right screws,
The right and left screws are screwed on the opposite gears that mesh with the gears to ensure a gear ratio of the rotational speed with few parts, and to reduce the number of failures and to make the device easy to use. It is intended to provide a device.

【０００４】[0004]

【課題を解決するための手段】上記目的を達成するため
に、本発明の運搬用変速装置においては、変速器本体
は、外周に相対する回動自在となる変速環を設ける。こ
の変速環の内部には、入力軸を設けた中心回転歯車と、
この中心回転歯車の外周に数個の遊星歯車を噛み合わせ
てある。前記遊星歯車の外周には、該変速環の内周面と
噛合する変速装置において、相対する変速環には、各々
左右の螺子を螺設すると共に、これに噛み合う１個の遊
星歯車には、中央より左右に各々左右螺子を螺設してあ
る。また、この遊星歯車に噛み合う入力軸と一体の中心
回転歯車には、外周の中央より左右の螺子を螺設して各
々を組立形成するものである。また、該中心回転歯車に
は、入力軸の反対側に出力軸に挿嵌する挿入軸を突設し
た構成となつている。In order to achieve the above-mentioned object, in the transport transmission of the present invention, the transmission main body is provided with a rotatable shift ring facing the outer periphery. Inside the speed change ring, a central rotating gear provided with an input shaft,
Several planetary gears are meshed with the outer circumference of this central rotating gear. In a transmission that meshes with the inner peripheral surface of the speed change ring on the outer circumference of the planetary gear, left and right screws are respectively screwed on the opposed speed change rings, and one planetary gear that meshes with the left and right screws is Left and right screws are respectively screwed to the left and right from the center. Further, the central rotating gear that is integral with the input shaft that meshes with the planetary gear is formed by assembling each of the left and right screws from the center of the outer circumference. Further, the center rotary gear has a structure in which an insertion shaft for inserting into the output shaft is provided on the opposite side of the input shaft.

【０００５】[0005]

【作用】上記のように構成された、本発明の運搬用変速
装置の例えは電動機付自転車、電動車椅子、無人搬送車
等に装設した場合の作動状態を説明すると、変速器本体
（１）における相対する変速環（２）及び変速環（３）
が固定されずにフリーの状態の時には、入力軸（７）を
有する中心回転歯車（５）の左螺子（１３）及び右螺子
（１４）と噛み合つている遊星歯車（６）（６）の各右
螺子（１６）及び左螺子（１７）とは回転せず、当然に
遊星歯車（５）の右螺子（１６）及び左螺子（１７）も
噛合回転しないため、入力軸（７）と出力軸（８）とは
同時に１対１の比率の回転となり変速器（１）は、全体
が一体となつて回転作動をするものである。次に、該変
速器本体（１）の相対する変速環（２）及び変速環
（３）が自転車のペダル軸等に、例えば固定される場合
には、入力軸（７）の回転と共に中心回転歯車（５）の
左螺子（１３）及び右螺子（１４）が右に回転すると、
遊星歯車（６）（６）の右螺子（１６）及び左螺子（１
７）とが噛み合つて左に回転し、該変速環（２）及び変
速環（３）の内面を回転することにより、入力軸（７）
と出力軸（８）とが歯車の歯山と歯谷の中心線までの距
離の比率で減速されるようにしたものである。The operation of the transport transmission of the present invention constructed as described above will be explained, for example, when the transport transmission is mounted on a bicycle with an electric motor, an electric wheelchair, an automated guided vehicle, etc. The transmission main body (1) Gearboxes (2) and gearboxes (3) opposite to each other
Of the planetary gears (6) (6) meshing with the left screw (13) and the right screw (14) of the central rotating gear (5) having the input shaft (7) when the gear is free and not fixed. Since the right screw (16) and the left screw (17) do not rotate, and naturally the right screw (16) and the left screw (17) of the planetary gear (5) also do not mesh and rotate, the input shaft (7) and the output The shaft (8) is rotated at a ratio of 1: 1 at the same time, and the transmission (1) is integrally rotated as a whole. Next, when the opposed gear rings (2) and (3) of the transmission body (1) are fixed to, for example, the pedal shaft of the bicycle, the rotation of the input shaft (7) and the central rotation are performed. When the left screw (13) and the right screw (14) of the gear (5) rotate to the right,
The right screw (16) and the left screw (1) of the planetary gears (6) (6)
7) meshes with and rotates to the left, and by rotating the inner surfaces of the speed change ring (2) and the speed change ring (3), the input shaft (7)
The output shaft (8) and the output shaft (8) are decelerated at the ratio of the distance between the tooth crest of the gear and the center line of the tooth trough.

【０００６】[0006]

【実施例】次に、本発明による実施例を図面について説
明すると、（１）は変速器本体を示し、この変速器本体
（１）は、図４に示す如く、外周に相対向する回動自在
となる変速環（２）と変速環（３）を装設する。この変
速環（２）と変速環（３）との内部には、中心に中心回
転歯車（５）と、その外周に位置する少なくとも複数個
の遊星歯車（６）を収納してある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, referring to the drawings, an embodiment according to the present invention will be described. (1) shows a transmission main body, and this transmission main body (1) has a rotating face opposed to the outer periphery as shown in FIG. A variable speed ring (2) and a variable speed ring (3) are installed. Inside the speed change ring (2) and the speed change ring (3), a central rotating gear (5) and at least a plurality of planetary gears (6) located on the outer periphery thereof are housed.

【０００７】前記変速環（２）には、内周面全体に左螺
子（９）を螺設すると共に、正面には数個の螺子孔（１
０）を螺設してある。次に、他方の変速環（３）には、
内周面全体に右螺子（１１）を螺設すると共に、正面に
該螺子孔（１０）と連通する数個の螺子孔（１２）を螺
設してある。A left screw (9) is screwed on the entire inner peripheral surface of the speed change ring (2), and several screw holes (1) are provided on the front surface.
0) is screwed. Next, in the other shift ring (3),
A right screw (11) is screwed on the entire inner peripheral surface, and several screw holes (12) communicating with the screw hole (10) are screwed on the front surface.

【０００８】次に、該変速環（２）と変速環（３）とに
逆螺子を以て噛み合う中間に位置する該遊星歯車（６）
（６）は、各々が中心より左右に右螺子（１６）と左螺
子（１７）に分けて螺設してある。また、遊星歯車
（６）（６）と噛み合う該中心回転歯車（５）には、該
遊星歯車（６）（６）の右螺子（１６）と左螺子（１
７）と噛み合う螺子を中心より左右に分けて左螺子（１
３）と右螺子（１４）とを螺設してある。更に、該中心
回転歯車（５）には、一方に入力軸（７）を突設すると
共に、他方には組立用の挿入軸（１５）を形成してあ
る。Next, the planetary gear (6) located in the middle of meshing the speed change ring (2) and the speed change ring (3) with a reverse screw.
Each of (6) is divided into a right screw (16) and a left screw (17) on the left and right of the center. Further, the central rotation gear (5) meshing with the planetary gears (6) (6) includes a right screw (16) and a left screw (1) of the planetary gears (6) (6).
7) The screw that meshes with the left screw (1
3) and the right screw (14) are screwed. Further, the central rotary gear (5) is provided with an input shaft (7) on one side and an insertion shaft (15) for assembly on the other side.

【０００９】また、図２に示す如く、該入力軸（７）に
は、該変速環（３）の外側より挿入孔（２１）を設けた
側円板（２０）嵌合する。更に、該中心回転歯車（５）
の該挿入軸（１５）に嵌合する側板（１８）には、出力
軸（８）が突設形成されている。また、側板（１８）の
外周には、数個の螺子孔（１９）（１９）……を螺設
し、該側円板（２０）に設けた螺子孔（２２）（２２）
と該螺子孔（１９）（１９）とを連結螺子（２４）（２
４）を締着してある、符号（２５）は、該変速環（ａと
変速環Ｂ）とに設けた該環子孔（１０）と螺子孔（１
２）を組立する締付螺子を示し、符号（２３）は、遊星
歯車（６）（６）と変速環（２）と変速環（３）との噛
合部を示したものである。Further, as shown in FIG. 2, the input shaft (7) is fitted with a side disc (20) provided with an insertion hole (21) from the outside of the speed change ring (3). Further, the central rotating gear (5)
An output shaft (8) is projectingly formed on a side plate (18) fitted to the insertion shaft (15). Further, several screw holes (19) (19) ... are screwed on the outer periphery of the side plate (18), and screw holes (22) (22) provided in the side disc (20).
And the screw holes (19) and (19) for connecting the screw (24) (2)
Reference numeral (25) to which 4) is fastened is the ring hole (10) and the screw hole (1) provided in the speed change ring (a and the speed change ring B).
2) shows a tightening screw for assembling, and reference numeral (23) shows a meshing portion of the planetary gears (6) (6), the speed change ring (2) and the speed change ring (3).

【００１０】[0010]

【発明の効果】以上説明したように本発明によれは、自
転車等のペダル軸に装設して使用することにより、荷重
の変化に応じて自動的に変速することによつて、ペダル
に掛かる力が大きく変動することが避けられる効果があ
る。そして、電動機をペダルに連続した場合には、電動
機の効率の良い回転数の位置でできるだけ使用すること
ができ、電池容量の効果的使用と合わせて電動機の最大
出力を抑えることができる効果がある。更に、相対する
変速環が固定されていない場合には、遊星歯車は回転せ
ず、入力軸と出力軸は一体となつて回転すると共に、相
対する変速環によつて変速器本体の組立が容易にできる
と云う効果がある。また、変速環が固定されている場合
には、遊星歯車が回転することによつて確実に減速され
る効果がある。また、中心回転歯車には、中心より左右
に左螺子及び右螺子を一体的に形成してあるので、部品
は少なく組み立てが簡単で故障が極力防止できる効果が
ある。更に、中心回転歯車と噛み合う遊星歯車には、中
心より左右に右螺子と左螺子とを一体的に形成してある
ので、部品が著しく少なくなり、組み立てが大変に容易
で故障等が生じないと云う優れた効果がある。As described above, according to the present invention, when the pedal shaft of a bicycle or the like is mounted and used, it automatically shifts in response to a change in the load, thereby engaging the pedal. The effect is that large fluctuations in force can be avoided. Further, when the electric motor is connected to the pedal, it can be used as much as possible at a position where the electric motor has an efficient rotational speed, and there is an effect that the maximum output of the electric motor can be suppressed together with effective use of the battery capacity. . Furthermore, if the opposing gearboxes are not fixed, the planetary gears will not rotate, the input shaft and output shaft will rotate together, and the opposing gearboxes will facilitate the assembly of the transmission body. There is an effect that can be done. Further, when the speed change ring is fixed, there is an effect that the planetary gear is rotated to surely reduce the speed. Further, since the left and right screws are integrally formed on the left and right sides of the center of the central rotating gear, there are few parts, and the assembly is easy and the failure can be prevented as much as possible. Further, the planetary gear that meshes with the central rotating gear has the right screw and the left screw integrally formed to the left and right of the center, so the number of parts is significantly reduced, and the assembly is extremely easy and no failure occurs. There is an excellent effect to say.

[Brief description of drawings]

【図１】本発明の内部を開示した側面図である。FIG. 1 is a side view disclosing the inside of the present invention.

【図２】同じく本発明の縦断側面図である。FIG. 2 is likewise a vertical side view of the present invention.

【図３】同じく本発明の一部欠除した正面図である。FIG. 3 is a front view of the present invention with a part thereof omitted.

【図４】同じく本発明の分解した一部欠除した側面図で
ある。FIG. 4 is a side view of the present invention, which is disassembled and partially cut away.

[Explanation of symbols]

１変速器本体２変速環３変速環５中心回転歯車６遊星歯車７入力軸８出力軸９左螺子１１右螺子１３左螺子１４右螺子１５挿入軸１６右螺子１７左螺子１８側板２０側円板２３噛合部 1 transmission main body 2 speed change ring 3 speed change ring 5 center rotating gear 6 planetary gear 7 input shaft 8 output shaft 9 left screw 11 right screw 13 left screw 14 right screw 15 insertion shaft 16 right screw 17 left screw 18 side plate 20 side disk 23 Mating part

Claims

[Claims]

1. A speed change ring (2) and a speed change ring (3), which are positioned on the outer circumference of which are rotatable relative to each other, and have an input shaft (2) inside the speed change ring (2). 7) provided with a central rotation side gear (5) and several planetary gears (6) (6) on the outer circumference of the central rotation gear (5), and the shift ring (2) and the shift ring In a transmission in which an input shaft (7) and an output shaft (8) are projectingly provided on opposite sides to (3), a left screw (9) is screwed on the inner peripheral surface of the speed change ring (2). The right ring (11) is screwed on the inner peripheral surface of the speed change ring (3), and the left and right screws (13) and the right screw ( 14) is screwed to the planetary gears (6) (6), and the left screw (13) is screwed to the central rotating gear (5).
A right screw (16) and a left screw (17) are screwed to the left and right of the center where the right screw (14) and the right screw (14) mesh with each other, and the center rotary gear (5) has the input shaft at one end thereof. (7) is provided in a protruding manner, and the output shaft (8) is fitted to the other insertion shaft (15).