JPS644425U

JPS644425U -

Info

Publication number: JPS644425U
Application number: JP9817887U
Authority: JP
Priority date: 1987-06-26
Filing date: 1987-06-26
Publication date: 1989-01-11
Anticipated expiration: 2002-06-26
Also published as: JPH0631457Y2

Description

[Brief explanation of the drawing]

第１図は本考案のフイルムの巻上巻戻機構の実
施例を示す、不正噛合防止状態の要部の平面図、
第２図、第３図はそれぞれ巻戻状態、および巻上
状態の要部の平面図、第４図は同要部の分解斜視
図、第５図、第６図は従来のフイルムの巻上巻戻
機構の巻戻状態および巻上状態の平面図である。１１……スプール軸、１２……巻戻軸、１３…
…巻戻フオーク、１４……パトローネ、１５……
ギヤ列、１５ａ……太陽ギヤ、１６……揺動レバ
ー、１６ａ……第一規制面、１６ｂ……第二規制
面、１７……遊星ギヤ、１８……スプロケツト、
２０……不正噛合防止部材、２０ａ……軸孔、２
０ｂ……切起し摩擦片、２０ｃ……回動範囲規制
爪、２０ｄ……不正噛合防止爪。 FIG. 1 is a plan view of the main parts of the film winding and rewinding mechanism of the present invention in a state where improper engagement is prevented;
Figures 2 and 3 are plan views of the main parts in the unwinding state and the winding state, respectively, Figure 4 is an exploded perspective view of the main parts, and Figures 5 and 6 are conventional film winding and winding. FIG. 6 is a plan view of the rewinding mechanism in a rewinding state and a winding state. 11...Spool shaft, 12...Rewinding shaft, 13...
...Rewind Folk, 14... Patrone, 15...
Gear train, 15a...Sun gear, 16...Rocking lever, 16a...First regulation surface, 16b...Second regulation surface, 17...Planetary gear, 18...Sprocket,
20... Incorrect engagement prevention member, 20a... Shaft hole, 2
0b... cut and raised friction piece, 20c... rotation range regulating claw, 20d... improper engagement prevention claw.

Claims

[Claims for Utility Model Registration] (1) A spool shaft; a rewinding shaft; a winding and rewinding drive system for rotating the spool shaft in the film winding direction and the film rewinding direction; driven by this winding drive system; a swinging arm that is supported coaxially with a sun gear and swings in a direction corresponding to the rotational direction of the sun gear; It engages with the rewind shaft only occasionally.
In the film winding and rewinding mechanism having a planetary gear interlocking with the winding and rewinding drive system, the swinging arm swings toward the rewinding shaft when the planetary gear is not engaged with the rewinding shaft. 1. A film winding and rewinding mechanism, characterized in that a film winding and rewinding mechanism is provided with an incorrect meshing prevention member that prevents meshing between a planetary gear and a rewinding shaft. (2) In paragraph 1 of the claims for utility model registration,
The incorrect meshing prevention member is a member that is coaxial with the planetary gear, frictionally engages with the planetary gear, and rotates at a constant angle in the rotation direction of the planetary gear, and when the planetary gear is not meshed with the rewinding shaft, A film winding and rewinding mechanism having an improper meshing prevention pawl located between a planetary gear and a rewinding shaft to prevent the two from meshing when the swinging arm swings toward the rewinding shaft. (3) In paragraph 2 of the claims for utility model registration,
The frictional engagement force between the planetary gear and the incorrect meshing prevention member is
The film winding and rewinding mechanism is used as a force to swing the swing lever according to the direction of rotation of the sun gear.