Shift fork in manual transmission
OwnerHiroshi Takiguchi, Tsuneyoshi Ohhazamainventors
Life of this patent
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Abstract
An improvement is made to the shift fork which engages the circumferential groove of a clutch means slidable along an axial line of a main shaft. The shift fork is composed of a piece made of material having high wear resistibility and a main body whose end part is smaller in cross section than the circumferential groove of the clutch. The piece is in the shape of a channel section and has an elastic tongue-like projections projecting from the bottom of this channel section. The tongue projections are urged, as being fastenings, into grooves formed at the end parts of said main body, whereby the piece is tightly attached to the main body to thus form parts engaging said circumferential grooves of the clutch means.
Claims9
In a manual transmission of the synchromesh type, having transmission gears (8, 9) mounted on a main shaft (6) and a drive shaft (6'), a clutch means (11) with a circumferential groove shiftable along an axial line of the main shaft between the transmission gears, and a shift fork (1) shifting the clutch means to engage the transmission gears, an improved shift fork for manual transmission comprising:
- (a) a main body (2) with an end part (22) smaller in cross-section than the circumferential groove (7) of the clutch means (11);
- (b) a piece (3) made of a material having high wear resistibility, said piece (3) having a channel shape section and integrally formed with a plurality of elastic tongue-like projections (33) on the bottom of the channel shape section;
- and,
- (c) grooves (4) in said main body (2) formed at said end parts (22), said grooves (4) corresponding to the tongue-like projections (33), said tongue-like projections (33) being urged into said grooves (4) so as to tightly attach the piece (3) to the end part (22) of the main body of the shift fork.
Dependencies are inferred from the claim text.