JPS6216399Y2 - - Google Patents
Info
- Publication number
- JPS6216399Y2 JPS6216399Y2 JP9937581U JP9937581U JPS6216399Y2 JP S6216399 Y2 JPS6216399 Y2 JP S6216399Y2 JP 9937581 U JP9937581 U JP 9937581U JP 9937581 U JP9937581 U JP 9937581U JP S6216399 Y2 JPS6216399 Y2 JP S6216399Y2
- Authority
- JP
- Japan
- Prior art keywords
- chain wheel
- diameter
- wheel
- small
- teeth
- 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
Links
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Gears, Cams (AREA)
Description
【考案の詳細な説明】
本考案は自転車用フロントチエンホイール装
置、詳しくは、多数の歯をもつ大径チエンホイー
ルと、該チエンホイールより歯数の少ない小径チ
エンホイール及び中間歯数の中間チエンホイール
とから成り、クランクに取付けて用いる自転車用
フロントチエンホイール装置に関する。[Detailed description of the invention] The present invention is a front chain wheel device for a bicycle, specifically, a large diameter chain wheel with a large number of teeth, a small diameter chain wheel with a smaller number of teeth than the chain wheel, and an intermediate chain wheel with an intermediate number of teeth. This invention relates to a front chain wheel device for a bicycle which is used by being attached to a crank.
一般に、歯数の異なる複数枚のチエンホイール
を組合わせてチエンホイール装置を形成する場
合、各チエンホイールをそれぞれ金属板により各
別に形成し、取付片及びスペーサを用い、取付ビ
ス等により結合して形成している。 Generally, when forming a chain wheel device by combining multiple chain wheels with different numbers of teeth, each chain wheel is formed separately from a metal plate, and then joined together using a mounting piece, a spacer, and a mounting screw. is forming.
そのため、加工並びに組立工数が煩雑で、生産
能率が悪く、量産できないばかりか、部品管理も
煩雑で、コスト高となる欠点があつた。 As a result, processing and assembly man-hours are complicated, production efficiency is poor, mass production is not possible, and parts management is also complicated, leading to high costs.
又、従来、前記チエンホイール装置を形成する
場合、各チエンホイールを一枚の金属板により一
体に形成するごとくしたものも提案されている
が、この場合、例えば各チエンホイールのうちで
最も使用頻度の高い中間チエンホイールのみが極
端に摩耗したとき、チエンホイール装置全体を交
換しなければならず、非常に不経済であつたし、
又例えば中間チエンホイールを交換して、該中間
チエンホイールと大径及び小径チエンホイール間
のギヤ比を、ユーザの好みに応じて変更すること
ができない欠点があつた。 Conventionally, when forming the chain wheel device, it has been proposed that each chain wheel is integrally formed from a single metal plate. When only the middle chain wheel, which has a high degree of wear, becomes extremely worn, the entire chain wheel device must be replaced, which is very uneconomical.
Another disadvantage is that, for example, it is not possible to change the gear ratio between the intermediate chain wheel and the large-diameter and small-diameter chain wheels according to the user's preference by replacing the intermediate chain wheel.
本考案は以上の如き従来の欠点に鑑み考案した
もので、目的とする処は、加工並びに組立工数を
簡素化できると共に、多量生産でき、大幅なコス
トダウンを行なうことができながら、しかも中間
チエンホイールを容易に交換することが可能なチ
エンホイール装置を提供する点にある。 The present invention was devised in view of the above-mentioned drawbacks of the conventional technology.The purpose of the present invention is to simplify processing and assembly man-hours, enable mass production, and significantly reduce costs. An object of the present invention is to provide a chain wheel device that allows wheels to be easily replaced.
しかして本考案は、多数の歯をもつ大径チエン
ホイールと、該チエンホイールより歯数の少ない
小径チエンホイール及び中間歯数の中間チエンホ
イールとから成るもので、前記大径チエンホイー
ルと小径チエンホイールとが複数の連結片によ
り、軸方向に前記中間チエンホイールの介装間隔
を置いて連結されたホイールボデイを一枚の金属
板から一体に形成すると共に、前記大径チエンホ
イールと小径チエンホイールとの間に、これらチ
エンホイールとは別体に形成する前記中間チエン
ホイールを介装し、該中間チエンホイールを、前
記ホイールボデイに着脱自在に取付けたことを特
徴とするものである。 Therefore, the present invention consists of a large-diameter chain wheel with a large number of teeth, a small-diameter chain wheel with fewer teeth than the chain wheel, and an intermediate chain wheel with an intermediate number of teeth. A wheel body is integrally formed from a single metal plate, and the wheel body is connected to the wheel by a plurality of connecting pieces at intervals of the intermediate chain wheel in the axial direction, and the large diameter chain wheel and the small diameter chain wheel are The intermediate chain wheel formed separately from these chain wheels is interposed between the wheels, and the intermediate chain wheel is detachably attached to the wheel body.
以下本考案フロントチエンホイール装置の一実
施例を図面に基づいて説明する。 An embodiment of the front chain wheel device of the present invention will be described below with reference to the drawings.
本考案チエンホイール装置は、多数の歯１ｂを
もつリング状の大径チエンホイール１と、該チエ
ンホイール１より歯数の少ない円板状の小径チエ
ンホイール２及び中間歯数の中間チエンホイール
３とから成り、クランク（図示せず）に取付けて
用いるものであつて、前記各チエンホイール１，
２，３のうち、大径チエンホイール１と小径チエ
ンホイール２とを、多数の連結片４を介して一枚
の金属板により一体に形成し、中間チエンホイー
ル３を前記大径チエンホイール１及び小径チエン
ホイール２と別体に形成するのである。 The chain wheel device of the present invention includes a ring-shaped large-diameter chain wheel 1 having a large number of teeth 1b, a disc-shaped small-diameter chain wheel 2 having fewer teeth than the chain wheel 1, and an intermediate chain wheel 3 having an intermediate number of teeth. It is used by being attached to a crank (not shown), and each of the chain wheels 1,
Of 2 and 3, the large-diameter chain wheel 1 and the small-diameter chain wheel 2 are integrally formed from a single metal plate via a large number of connecting pieces 4, and the intermediate chain wheel 3 is connected to the large-diameter chain wheel 1 and the small-diameter chain wheel 2. It is formed separately from the small diameter chain wheel 2.
しかして前記大径チエンホイール１と小径チエ
ンホイール２とは、一枚の金属板を打抜いて連続
的に形成するのであつて、前記金属板の中心部に
前記円板状の小径チエンホイール２を、外周部に
前記リング状の大径チエンホイール１を形成し、
これら大径チエンホイール１と小径チエンホイー
ル２間に前記連結片４を設け、この連結片４を、
屈曲部４ａ，４ｂを介して前記小径チエンホイー
ル２の軸方向斜め外方に突出させて、該連結片４
により前記大径及び小径チエンホイール１，２の
ホイールボデイ１ａ，２ａを、軸方向に前記中間
チエンホイール３の介装間隔を置いて連結するの
である。 The large diameter chain wheel 1 and the small diameter chain wheel 2 are continuously formed by punching out a single metal plate, and the disc-shaped small diameter chain wheel 2 is attached to the center of the metal plate. forming the ring-shaped large diameter chain wheel 1 on the outer periphery;
The connecting piece 4 is provided between the large-diameter chain wheel 1 and the small-diameter chain wheel 2, and the connecting piece 4 is
The connecting piece 4 is made to protrude diagonally outward in the axial direction of the small diameter chain wheel 2 through the bent portions 4a and 4b.
Thus, the wheel bodies 1a and 2a of the large-diameter and small-diameter chain wheels 1 and 2 are connected in the axial direction with an intervening interval of the intermediate chain wheel 3.
前記連結片４は、小径チエンホイール２の歯を
１個犠牲にして形成するのであつて、犠牲にする
歯の歯底部に、半径方向内方に延びる所要長さの
切溝２１，２１を平行状に設けて、この切溝２
１，２１間に前記連結片４を設けるのである。そ
してこの連結片４を、その長さ方向に一定間隔を
置いて屈曲させることにより、前記大径チエンホ
イール１と小径チエンホイール２とを連結すると
共に、これらチエンホイール１，２のホイールボ
デイ１ａ，２ａ間を一定間隔に保持するのであ
る。 The connecting piece 4 is formed by sacrificing one tooth of the small-diameter chain wheel 2. Cut grooves 21, 21 of a required length extending radially inward are formed in parallel on the bottom of the tooth to be sacrificed. This cut groove 2
The connecting piece 4 is provided between 1 and 21. By bending the connecting pieces 4 at regular intervals in the length direction, the large-diameter chain wheel 1 and the small-diameter chain wheel 2 are connected, and the wheel bodies 1a, 2a is maintained at a constant interval.
又、前記中間チエンホイール３は、前記金属板
とは別の金属板を打抜いてリング状に形成するの
であつて、この中間チエンホイール３を、止めね
じ５などの取付手段により前記大径チエンホイー
ル１のホイールボデイ１ａに取付けるのである。 Further, the intermediate chain wheel 3 is formed into a ring shape by punching out a metal plate different from the metal plate, and is attached to the large diameter chain by a mounting means such as a set screw 5. It is attached to the wheel body 1a of the wheel 1.
この中間チエンホイール３の取付けは、例えば
第１，２図の如く筒状のスペーサ６を介して止め
ねじ５により着脱自由に取付けるのである。この
場合、中間チエンホイール３のホイールボデイ３
ａに複数個のねじ孔３１を設けると共に、前記大
径チエンホイール１のホイールボデイ１ａに貫通
孔１１を設け、中間チエンホイール３と大径チエ
ンホイール１との間に、前記スペーサ６を介装
し、前記貫通孔１１からスペーサ６内に前記止め
ねじ５を挿入し、該止めねじ５を前記ねじ孔３１
に螺合するのである。 The intermediate chain wheel 3 is attached, for example, as shown in FIGS. 1 and 2, by detachably attaching it with a set screw 5 via a cylindrical spacer 6. In this case, the wheel body 3 of the intermediate chain wheel 3
A plurality of screw holes 31 are provided in the wheel body 1a of the large diameter chain wheel 1, and a through hole 11 is provided in the wheel body 1a of the large diameter chain wheel 1, and the spacer 6 is interposed between the intermediate chain wheel 3 and the large diameter chain wheel 1. Then, insert the set screw 5 into the spacer 6 from the through hole 11, and insert the set screw 5 into the screw hole 31.
It is screwed together.
尚、前記止めねじ５は、前記ホイールボデイ１
ａに螺着してもよい。又前記中間チエンホイール
３は、スペーサ６を用いて取付ける他、第３図の
如く前記ホイールボデイ１ａの内周縁近くを前記
小径チエンホイール２側に突出させて所定高さの
取付座１２を設け、この取付座１２に、前記止め
ねじ５により着脱自由に取付けてもよいし、又、
第４図の如く前記中間チエンホイール３の内周縁
近くに、前記大径チエンホイール１側に突出する
取付片３２を設けて、この取付片３２を前記ホイ
ールボデイ１ａに着脱自由に取付けてもよい。
又、この中間チエンホイール３は、着脱自由に取
付ける他、止めピン或いは溶接などの取付手段に
より取付けてもよい。しかし着脱自由に取付ける
ことにより、各チエンホイール１，２，３のうち
で最も使用頻度の高い中間チエンホイール３のみ
が極端に摩耗したとき、この中間チエンホイール
３のみを交換できる利点があり、又、大径チエン
ホイール１と中間チエンホイール３とのギヤ比、
或いは中間チエンホイール３と小径チエンホイー
ル２とのギヤ比をユーザの好みに応じて変更した
いとき、そのギヤ比の変更を容易に行なうことが
できる利点がある。又、前記中間チエンホイール
３は金属板で形成する他、アルミニウムなどの軽
量材で形成してもよい。 Note that the set screw 5 is attached to the wheel body 1.
It may be screwed onto a. In addition to mounting the intermediate chain wheel 3 using a spacer 6, as shown in FIG. 3, a mounting seat 12 of a predetermined height is provided by protruding near the inner peripheral edge of the wheel body 1a toward the small diameter chain wheel 2, as shown in FIG. It may be freely attached to and detached from the mounting seat 12 using the setscrew 5, or
As shown in FIG. 4, a mounting piece 32 protruding toward the large-diameter chain wheel 1 may be provided near the inner peripheral edge of the intermediate chain wheel 3, and this mounting piece 32 may be freely attached to and detached from the wheel body 1a. .
Further, the intermediate chain wheel 3 may be attached detachably, or may be attached using attachment means such as a fixing pin or welding. However, by attaching it detachably, there is an advantage that when only the intermediate chain wheel 3, which is the most frequently used of the chain wheels 1, 2, and 3, becomes extremely worn, only this intermediate chain wheel 3 can be replaced. , the gear ratio between the large diameter chain wheel 1 and the intermediate chain wheel 3,
Alternatively, when it is desired to change the gear ratio between the intermediate chain wheel 3 and the small diameter chain wheel 2 according to the user's preference, there is an advantage that the gear ratio can be easily changed. Further, the intermediate chain wheel 3 may be made of a lightweight material such as aluminum, in addition to being made of a metal plate.
尚、図中７は例えば金属板を打抜いてリング状
に形成するプロテクターであつて、ガード部７１
と取付部７２とから成り、このプロテクター７を
前記大径チエンホイール１の軸方向外方に配置し
て、前記ガード部７１を前記大径チエンホイール
１の歯１ｂ部分と対向させると共に、前記取付部
７２を止めねじ５或いは結合ピンなどの取付手段
により前記大径チエンホイール１に取付けてい
る。 In addition, 7 in the figure is a protector formed into a ring shape by punching a metal plate, for example, and a guard part 71
This protector 7 is arranged axially outward of the large diameter chain wheel 1 so that the guard part 71 faces the tooth 1b portion of the large diameter chain wheel 1, and the mounting part 72 is The portion 72 is attached to the large diameter chain wheel 1 using attachment means such as a set screw 5 or a coupling pin.
尚、以上の説明では中間チエンホイール３を１
つとしたが、２つ以上であつてもよい。 In addition, in the above explanation, the intermediate chain wheel 3 is
However, there may be two or more.
以上の如く本考案は、大径チエンホイールと小
径チエンホイール及び中間チエンホイールのう
ち、大径チエンホイールと小径チエンホイールと
を、一枚の金属板により一体に形成し、中間チエ
ンホイールを別体に形成して、前記大径チエンホ
イールと小径チエンホイールとの間に介装し、該
中間チエンホイールを前記大径チエンホイール又
は小径チエンホイールのホイールボデイに着脱自
在に取付けたから、各チエンホイールを各別に形
成するものに比べて加工並びに組立工数を簡単化
できると共に、多量生産でき、大幅なコストダウ
ンを行なうことができながら、しかも各チエンホ
イールのうちで最も使用頻度の高い中間チエンホ
イールを着脱自由に取付けることが可能であるか
ら、この中間チエンホイールのみが極端に摩耗し
たとき、チエンホイール装置全体を交換すること
なく、中間チエンホイールのみを交換することが
可能であり、又、中間チエンホイールと大径及び
小径チエンホイール間のギヤ比をユーザの好みに
応じて変更することも可能である。 As described above, in the present invention, among the large-diameter chain wheel, small-diameter chain wheel, and intermediate chain wheel, the large-diameter chain wheel and the small-diameter chain wheel are integrally formed from one metal plate, and the intermediate chain wheel is formed separately. and interposed between the large diameter chain wheel and the small diameter chain wheel, and the intermediate chain wheel was removably attached to the wheel body of the large diameter chain wheel or the small diameter chain wheel. Compared to forming each chain wheel separately, processing and assembly man-hours can be simplified, mass production is possible, and costs can be significantly reduced. Moreover, the intermediate chain wheel, which is the most frequently used of each chain wheel, can be attached and detached. Since it can be installed freely, when only this intermediate chain wheel becomes extremely worn, it is possible to replace only the intermediate chain wheel without replacing the entire chain wheel device. It is also possible to change the gear ratio between the large diameter chain wheel and the small diameter chain wheel according to the user's preference.
第１図は本考案の一実施例を示す正面図、第２
図は同じく縦断側面図、第３図及び第４図は別の
実施例を示す部分切欠断面図である。
１……大径チエンホイール、２……小径チエン
ホイール、３……中間チエンホイール、１ａ，２
ａ……ホイールボデイ、４……連結片。
Figure 1 is a front view showing one embodiment of the present invention;
The figure is a vertical side view, and FIGS. 3 and 4 are partially cutaway sectional views showing another embodiment. 1...Large diameter chain wheel, 2...Small diameter chain wheel, 3...Intermediate chain wheel, 1a, 2
a...Wheel body, 4...Connection piece.
Claims (1)
ンホイールより歯数の少ない小径チエンホイール
及び中間歯数の中間チエンホイールとから成るも
ので、前記大径チエンホイールと小径チエンホイ
ールとが複数の連結片により、軸方向に前記中間
チエンホイールの介装間隔を置いて連結されたホ
イールボデイを一枚の金属板から一体に形成する
と共に、前記大径チエンホイールと小径チエンホ
イールとの間に、これらチエンホイールとは別体
に形成する前記中間チエンホイールを介装し、該
中間チエンホイールを、前記ホイールボデイに着
脱自在に取付けたことを特徴とする自転車用フロ
ントチエンホイール装置。 It consists of a large-diameter chain wheel with a large number of teeth, a small-diameter chain wheel with a smaller number of teeth than the chain wheel, and an intermediate chain wheel with an intermediate number of teeth, and the large-diameter chain wheel and the small-diameter chain wheel are connected to each other in plurality. A wheel body is integrally formed from a single metal plate and is connected to the intermediate chain wheel in the axial direction by a piece at an intervening interval. A front chain wheel device for a bicycle, characterized in that the intermediate chain wheel formed separately from the chain wheel is interposed therebetween, and the intermediate chain wheel is detachably attached to the wheel body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9937581U JPS584494U (en) | 1981-07-02 | 1981-07-02 | Bicycle front chain wheel device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9937581U JPS584494U (en) | 1981-07-02 | 1981-07-02 | Bicycle front chain wheel device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS584494U JPS584494U (en) | 1983-01-12 |
| JPS6216399Y2 true JPS6216399Y2 (en) | 1987-04-24 |
Family
ID=29894112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9937581U Granted JPS584494U (en) | 1981-07-02 | 1981-07-02 | Bicycle front chain wheel device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS584494U (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS607835U (en) * | 1983-06-24 | 1985-01-19 | 永尾 彰 | electrical stimulation device |
| JPS6025635U (en) * | 1983-07-28 | 1985-02-21 | 加納 豊 | Meridian treatment equipment |
| JPS60141834U (en) * | 1983-08-05 | 1985-09-19 | 田中 稔 | A set of equipment that can be used as a substitute for acupressure |
| JPS60203269A (en) * | 1984-03-27 | 1985-10-14 | 松尾 剛志 | Skin treatment tool used so as to be contacted with effective spot or pain part of living body |
| JPS6194039U (en) * | 1984-11-24 | 1986-06-17 | ||
| JPH0628138Y2 (en) * | 1990-03-02 | 1994-08-03 | 剛志 松尾 | Skin treatment device for skin contact with acupuncture points and painful parts of the human body |
| US20110319209A1 (en) * | 2010-06-28 | 2011-12-29 | TWDT Precision Co., Ltd. | Integrated bicycle chainring assembly |
-
1981
- 1981-07-02 JP JP9937581U patent/JPS584494U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS584494U (en) | 1983-01-12 |
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