Manual transmission with mechanism for preventing reverse gear s

Details Manual transmission with mechanism for preventing reverse gear s Manual transmission with mechanism for preventing reverse gear s

1985-12-23

1988-05-24

Reese, Randolph A.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

744115, 74477, 192 4C, F16H 338, B60K 4126

Patent

active

047458240

ABSTRACT:
In order to prevent gear noise in reverse gear shift of a synchromesh type manual transmission having a reverse fork rod for effecting the reverse gear shift with no synchronizer and at least one forward speed fork rod connected with a synchronizer, there is provided an engaging mechanism having translational member and rotational member one of which is mounted on the forward fork rod and the other of which is mounted on a select member for selecting one of the fork rods and shifting the selected fork rod. The translational and rotational members are engaged with each other so as to move the forward fork rod to actuate the synchronizer to facilitate the reverse shift when the reverse fork rod is selected and shifted. During this, the translational member moves rectilinearly along the axis of the forward fork rod, and the rotational member rotates so that the translational and rotational members are disengaged halfway to return the forward fork rod.

REFERENCES:
patent: 1629666 (1927-05-01), Keeler
patent: 1830797 (1931-11-01), Lapsley
patent: 1951876 (1934-03-01), Lapsley
patent: 3192788 (1965-07-01), Fodrea
patent: 3545295 (1970-12-01), Ravello
patent: 3939724 (1976-02-01), Takahashi et al.
patent: 4174644 (1979-11-01), Nagy et al.
patent: 4294338 (1981-10-01), Simmons
patent: 4467665 (1984-08-01), Katayama et al.
patent: 4633728 (1987-01-01), May
"Toyota Gijutsu (technique)", vol. 38, No. 2, p. 159, published by Toyota Motor Co., Ltd., Dec., 1983.

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