JPS6246859U

JPS6246859U -

Info

Publication number: JPS6246859U
Application number: JP13996885U
Authority: JP
Priority date: 1985-09-12
Filing date: 1985-09-12
Publication date: 1987-03-23

Description

[Brief explanation of the drawing]

第１図及び第２図は本考案の一つの実施例に係
る手動変速機における後退段変速時のギヤ鳴り防
止装置を示しており、第１図はその要部断面図、
第２図は第１図の―線に沿つた断面図、第３
図及び第４図は本考案の他の一つの実施例に係る
手動変速機における後退段変速時のギヤ鳴り防止
装置を示しており、第３図は前記第１図に相当す
る図、第４図は第３図の矢印方向から見た図で
ある。符号の説明、１０……変速機ケース、１１……
１ｓｔ―２ｎｄ用フオークシヤフト、１２……３
ｒｄ―４ｔｈ用フオークシヤフト、１３……５ｔ
ｈ―Ｒｅｖ用フオークシヤフト、１７……１ｓｔ
―２ｎｄ用フオークシヤフトのシフトレバー係合
溝、１８……３ｒｄ―４ｔｈ用フオークシヤフト
のシフトレバー係合溝、１９……５ｔｈ―Ｒｅｖ
用フオークシヤフトのシフトレバー係合溝、２０
……シフトレバー、２１〜２９……ロツクボール
溝、３４……ロツクボール機構、４１……シフト
インターロツク機構、４３……同期装置、４８…
…５速ギヤ、４９……リバースギヤ、５０……ア
ウトプツトシヤフト、５１……カウンタシヤフト
、５２……５速カウンタギヤ、５３……リバース
カウンタギヤ、５４……面取り、５７……スプリ
ング、５８……突出ピン、ｌ……オフセツト量。 1 and 2 show a gear noise prevention device during reverse gear shifting in a manual transmission according to an embodiment of the present invention, and FIG. 1 is a sectional view of the main parts thereof;
Figure 2 is a sectional view taken along the - line in Figure 1;
4 and 4 show a gear noise prevention device during reverse gear shifting in a manual transmission according to another embodiment of the present invention, FIG. 3 is a diagram corresponding to FIG. 1, and FIG. The figure is a view seen from the direction of the arrow in FIG. 3. Explanation of symbols, 10...Transmission case, 11...
Fork shaft for 1st-2nd, 12...3
Forkshaft for rd-4th, 13...5t
Folkshaft for h-Rev, 17...1st
-2nd forkshaft shift lever engagement groove, 18...3rd-4th forkshaft shift lever engagement groove, 19...5th-Rev
Fork shaft shift lever engagement groove, 20
...Shift lever, 21-29...Lock ball groove, 34...Lock ball mechanism, 41...Shift interlock mechanism, 43...Synchronizer, 48...
...5th gear, 49... Reverse gear, 50... Output shaft, 51... Counter shaft, 52... 5th speed counter gear, 53... Reverse counter gear, 54... Chamfer, 57... Spring, 58 ...Protruding pin, l...Offset amount.

Claims

[Claims for Utility Model Registration] A manual transmission having a shift pattern in which a plurality of forkshafts are arranged parallel to each other, and a forward gear with a synchronizer and a reverse gear without a synchronizer face each other in the shift direction. In the machine, a shift lever engagement groove of the forkshaft that obtains the certain forward gear and reverse gear in the neutral position is offset to the reverse gear side with respect to a shift lever engagement groove of the forkshaft that obtains the other forward gear, A reverse gear shift in a manual transmission, characterized in that when a reverse gear selection operation is performed, the fork shaft is moved to reduce the inertial rotation of a counter gear system by a synchronizer of a forward gear opposite to the reverse gear. Gear noise prevention device.