JPS6254350U - - Google Patents
Info
- Publication number
- JPS6254350U JPS6254350U JP14619685U JP14619685U JPS6254350U JP S6254350 U JPS6254350 U JP S6254350U JP 14619685 U JP14619685 U JP 14619685U JP 14619685 U JP14619685 U JP 14619685U JP S6254350 U JPS6254350 U JP S6254350U
- Authority
- JP
- Japan
- Prior art keywords
- shift
- guide groove
- gear
- guide grooves
- shift fork
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Gear-Shifting Mechanisms (AREA)
Description
第１図は本考案に係るギアシフト機構とその周
辺部材を示す斜視図、第２図及び第３図は該ギア
シフト機構の一部詳細図、第４図はシフトドラム
の回転角度とシフトフオークの加速度との関係を
示す図、第５図ないし第９図は既に提案されてい
るギアシフト機構を説明するための図である。
主要部分の符号の説明、１２……案内溝、１２
ｂ……第１案内溝、１２ｃ……第２案内溝、１２
ｄ……第３案内溝、１４……シフトドラム、２１
，２２，２３……シフトフオーク。
Fig. 1 is a perspective view showing the gear shift mechanism and its peripheral members according to the present invention, Figs. 2 and 3 are partial detailed views of the gear shift mechanism, and Fig. 4 shows the rotation angle of the shift drum and the acceleration of the shift fork. 5 to 9 are diagrams for explaining already proposed gear shift mechanisms. Explanation of symbols of main parts, 12... Guide groove, 12
b...First guide groove, 12c...Second guide groove, 12
d...Third guide groove, 14...Shift drum, 21
, 22, 23...Shift fork.
Claims (1)
端部にて係合して前記スライデイングギアを移動
せしめるためのシフトフオークと、外周部に前記
シフトフオークの他端部と係合する案内溝が設け
られて前記シフトフオークを駆動するシフトドラ
ムとを含み、前記案内溝は互いに前記シフトドラ
ムの中心軸方向において離隔し且つ各々前記シフ
トドラムの周方向に伸びる第１及び第２案内溝と
、前記第１及び第２案内溝の間を伸びる第３案内
溝とを有し、前記第３案内溝の形状がその中心座
標を（Ｚ，θ）としＺ＝ｆ（θ）なる式で表わさ
れるとして、θ＝θ０のときｄ２Ｚ／ｄθ２＝Ｏ
，θ＜θ０のときｄ２Ｚ／ｄθ２＞Ｏ，θ＞θ０
のときｄ２Ｚ／ｄθ２＜Ｏ（ここにθ０は前記第
３案内溝の中央点座標）なる条件を充足するが如
くなされていることを特徴とするギアシフト機構
。 A shift fork that engages with a sliding gear of the transmission at one end to move the sliding gear, and a guide groove that engages with the other end of the shift fork on an outer periphery thereof. a shift drum that drives a shift fork, the guide grooves include first and second guide grooves that are spaced apart from each other in the direction of the center axis of the shift drum and extend in the circumferential direction of the shift drum; and a third guide groove extending between the two guide grooves, and assuming that the shape of the third guide groove is expressed by the formula Z=f(θ) where the center coordinates are (Z, θ), θ=θ When 0 , d 2 Z/dθ 2 = O
, when θ<θ 0 , d 2 Z/dθ 2 >O, θ>θ 0
A gear shift mechanism characterized in that the gear shift mechanism is configured to satisfy the following condition: d 2 Z/dθ 2 <O (where θ 0 is the coordinates of the center point of the third guide groove).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985146196U JPH0517505Y2 (en) | 1985-09-25 | 1985-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985146196U JPH0517505Y2 (en) | 1985-09-25 | 1985-09-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6254350U true JPS6254350U (en) | 1987-04-04 |
| JPH0517505Y2 JPH0517505Y2 (en) | 1993-05-11 |
Family
ID=31058443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985146196U Expired - Lifetime JPH0517505Y2 (en) | 1985-09-25 | 1985-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0517505Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008215555A (en) * | 2007-03-06 | 2008-09-18 | Honda Motor Co Ltd | Automatic transmission |
| JP2017515072A (en) * | 2014-05-07 | 2017-06-08 | バイエリシエ・モトーレンウエルケ・アクチエンゲゼルシヤフト | Shift drum for an automotive manual transmission and manual transmission having such a shift drum |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS45814Y1 (en) * | 1966-03-28 | 1970-01-14 |
-
1985
- 1985-09-25 JP JP1985146196U patent/JPH0517505Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS45814Y1 (en) * | 1966-03-28 | 1970-01-14 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008215555A (en) * | 2007-03-06 | 2008-09-18 | Honda Motor Co Ltd | Automatic transmission |
| JP2017515072A (en) * | 2014-05-07 | 2017-06-08 | バイエリシエ・モトーレンウエルケ・アクチエンゲゼルシヤフト | Shift drum for an automotive manual transmission and manual transmission having such a shift drum |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0517505Y2 (en) | 1993-05-11 |
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