CN2092109U

CN2092109U - Camera

Info

Publication number: CN2092109U
Application number: CN91208383U
Authority: CN
Inventors: 陈冶
Original assignee: Zhifa Industry Co ltd
Current assignee: Zhifa Industry Co ltd
Priority date: 1990-04-30
Filing date: 1991-04-30
Publication date: 1992-01-01
Also published as: GB2243697B; GB2243697A; GB9009637D0

Abstract

The utility model relates to a camera. Comprising a drive mechanism used for conveying the movement of a knuckle operated by a scroll operating mechanism to a scroll mechanism, an exposure counting mechanism and a shutter switch mechanism, the drive mechanism is provided with a shaft usually positioned on a meshing position for conveying driving force, but the shaft can also be exactly moved to a demeshing position for back rolling.

Description

Camera

The present invention relates to camera.

In a lot of modern cameras, the running of upcoiler structure can automatically cause the running such as other mechanisms such as shutter release mechanism and exposure counting mechanisms.Generally speaking, driving force is sent to respectively in each other mechanism by each other gear train from the upcoiler structure.

The purpose of this invention is to provide a kind of camera, it has the gear train that can drive the simplification of a plurality of different institutions.

Camera provided by the invention comprises a hook of being handled by the catanator of upcoiler structure, a upcoiler structure, an exposure counting mechanism, a shutter release mechanism and a gear train that driving force is sent to above-mentioned each mechanism from hook volume control gear, it is characterized in that, gear train comprises an axle of handling by last volume and making it to rotate around its axis, length along this disposes the structure that is used to drive said mechanism, this energy moves axially along its length direction, and disengaging is meshed and can be rewinded whereby.

With reference to the accompanying drawings, only be described in more detail with a kind of preferred structure of example to camera of the present invention, shown in the drawings is the exploded perspective illustration of preferred structure.

Camera comprises that 4, one of 3, one upcoiler structures of protecgulum that have 2, one of 1, one antethecas of a rear wall to be assemblied in the antetheca top rewind 7, one shutter operation mechanism 8 of 6, one film exposure counting mechanisms of 5, one view finder assemblies of mechanism and a gear train 9.

Gear train 9 mainly comprises a horizontal gear 91 and a coaxial vertical axes 92.Vertical axes 92 can move vertically, and can move to lower position (as shown in the figure) by spring 93.Wherein, axle 92 engages with gear 91 by separately key engagement structure 94,95 on gear and the axle, therefore can rotate, and wherein the lower end of vertical axes 92 protrusion bottom the camera with gear 91.By hook pressure, the biasing force that overcomes spring can be pressed into axle 92 camera (looking up) from figure, then is disengaged with gear 91 when moving on the axle 92.Gear 91 is driven by upcoiler structure 4, is particularly driven by the gear 41 of upcoiler structure 4 lower ends by a neutral gear 96.

Exposure counting mechanism 7 and operation thereof are described now.Exposure counting mechanism 7 comprises a digital calibration dish 71 that is assemblied on the gear 72.When upcoiler structure 4 was operated, vertical axes 92 was rotated, and the tooth 97 on the axle meshes with the gear 72 of exposure counting mechanism, thereby gear 72 is rotated together with index dial 71.Exposure counting mechanism 7 is equipped with the spring 73 that makes gear 72 move to initial position, also includes a ratchet 74, so that gear 72 is revolted the biasing force of springs and progressively advanced.When exposure counting mechanism 7 arrives its final positions, open the action of camera ratchet 74 is moved under the effect of spring 75 for taking out the film that exposed, be disengaged with gear 72, make exposure counting mechanism 7 can be back to its initial position like this.

The following describes fast gate operator 8.It is mainly by being installed in shutter chamber 82a, the shutter 81 that sways among the 82b constitutes, shutter controls 83 by a slip is handled, this controls 83 can from rest position (the figure left) slide into one also do not have a disturbance shutter treat firing position (among the figure to the right), but when treating that firing position returns, just can touch shutter 81 instantaneously.When operation upcoiler structure 4, the rotation of gear 91 makes cam 99 and 84 engagements of the cam on the shutter controls 83 on this gear, shutter controls 84 is moved to treat firing position, and blocked by pallet 85 in this position.

Below describe and prevent the mechanism that film goes back to down.This mechanism comprises a band tooth guide wheel 42 that meshes with film, is positioned at two belows between the film room 11,12.Roll up or rewind in the process last, band tooth guide wheel 42 helps the film (not shown) to shift to another film room from a film room 11,12.Usually, band tooth guide wheel 42 and upcoiler structure 4 mechanical connections, and can only rotate along last volume direction.Yet when needs rewinded, band tooth guide wheel 42 can disengage with upcoiler structure 4, and can freely rotate along rewinding direction.This mechanical connection is by the complimentary engagement structure 98 that is in respectively on axle 92 and the band tooth guide wheel 42,43 generations, disengage then is by the biasing force of revolting spring vertical pivot 92 to be pressed into (to make progress among the figure) in the camera to realize, like this, axle 92 is disengaged with band tooth guide wheel 42, thereby film is refunded.

Claims

1, a kind of camera has a hook of being handled by last volume catanator (4), a upcoiler structure (4,42), an exposure counting mechanism (7), a shutter release mechanism (8), with a gear train (9) that is used for driving force is sent to from structure pawl volume catanator above-mentioned each machine hook, it is characterized in that, gear train (9) has an axle (92) that can rotate around its axis by last volume catanator, the structure (94 that drives said mechanism is arranged along shaft length, 95), axle (92) can axially move along its length direction, to break away from engagement film is rewinded.

2, camera according to claim 1, it is characterized in that having a bias mechanism (93) that axle (92) is pressed to the position of engagement, axle is from photograph unit room (1,2 when this position, 3) stretch out in, also can axial compression be returned in the photograph unit room to the position that is disengaged against the biasing force of spring.