Film unit with a lens attached
AssigneeKonica Corporation
InventorShuri Mizoguchi
Life of this patent
Estimating the term…
Abstract
A film unit is provided with an unexposed film chamber in which an unexposed film is accommodated beforehand; a photographing lens through which the unexposed film is imagewise exposed; a film wind-up chamber; a spool provided in the film wind-up chamber, holding an end portion of the film, and having a rotation center on which the spool is rotated so that the exposed film is wound up into the film wind-up chamber; a spool engaging member for engaging with the spool; and a wind-up operating member located at an eccentric position from the rotation center of the spool and for engaging with the spool engaging member so that the wind-up operating member rotates the spool through the spool engaging member.
Claims15
A film unit provided with a photographic lens, comprising:
- an unexposed film chamber in which an unexposed film is accommodated;
- the photographing lens through which the unexposed film is imagewise exposed;
- a film wind-up chamber in which a film cartridge having a rotatable spool therein is detachably accommodated, wherein the film wind-up chamber comprises a ceiling plate having an engaging hole;
- the rotatable spool holding an end portion of the film and having a rotation center on which the spool is rotated so that the exposed film is wound up into the film cartridge;
- a spool engaging member on the ceiling plate, having a rotation center coaxial with the rotation center of the spool, and comprising an engaging piece and a first eccentric engagement member, the engaging piece adapted to detachably coaxially engage the spool through the hole of the ceiling plate;
- a spool engaging member guide to maintain the rotation center of the spool engaging member so that the spool engaging member rotates coaxially with the spool;
- a wind-up knob on the ceiling plate, having a rotation center eccentric to the rotation center of the spool engaging member and comprising a second eccentric engagement member to engage the first eccentric engagement member of the spool engaging member;
- and
- a wind-up knob guide to maintain the rotation center of the wind-up knob so that the wind-up knob rotates the spool engaged with the spool engaging member through an engagement between the first eccentric engagement member and the second eccentric engagement member while eccentrically rotating,
- wherein both of the spool engaging member guide and the wind-up knob guide are mounted on the ceiling plate so as to form a single body with the ceiling plate.
A body of a film unit provided with a photographic lens, comprising:
- an unexposed film chamber in which an unexposed film is accommodated;
- the photographing lens through which the unexposed film is imagewise exposed;
- a film wind-up chamber in which a film cartridge having a rotatable spool therein is detachably accommodated, wherein the film wind-up chamber comprises a ceiling plate having an engaging hole;
- a spool engaging member on the ceiling plate, having a rotation center axial with a rotation center of the rotatable spool, and comprising an engaging piece and a first eccentric engagement member, the engaging piece adapted to detachably coaxially engage the rotatable spool through the hole of the ceiling plate;
- a spool engaging member guide to maintain the rotation center of the spool engaging member so that the spool engaging member rotates coaxially with the rotatable spool;
- a wind-up knob on the ceiling plate, having a rotation center eccentric to the rotation center of the spool engaging member and comprising a second eccentric engagement member to engage the first eccentric engagement member of the spool engaging member;
- and
- a wind-up knob guide to maintain the rotation center of the wind-up knob so that the wind-up knob rotates the rotatable spool engaged with the spool engaging member through an engagement between the first eccentric engagement member and the second eccentric engagement member while eccentrically rotating,
- wherein both of the spool engaging member guide and the wind-up knob guide are mounted on the ceiling plate so as to form a single body with the ceiling plate.
Dependencies are inferred from the claim text.