DD283224A5

DD283224A5 - DEVICE FOR LOCKING THE TRIGGER OF A PHOTOGRAPHIC CAMERA

Info

Publication number: DD283224A5
Application number: DD32862889A
Authority: DD
Inventors: Gernot Lachmann
Original assignee: Kamerafabrik Freital Veb
Priority date: 1989-05-16
Filing date: 1989-05-16
Publication date: 1990-10-03

Abstract

Die Erfindung betrifft eine Vorrichtung zum Sperren des Ausloesers einer fotografischen Kamera. Zum Verringern des Aufwandes fuer das Herstellen einer Vorrichtung zum Sperren des Ausloesers einer fotografischen Kamera in Abhaengigkeit von der Stellung eines Abdeckschiebers fuer das Aufnahmeobjektiv ist der Abdeckschieber (1) aus einer senkrecht zur optischen Achse des Aufnahmeobjektives (4) verlaufenden Schlieszebene in eine parallel zur optischen Achse des Aufnahmeobjektives (4) liegende OEffnungsebene umlenkbar ausgebildet und der Kameraausloeser (2) senkrecht zu besagter OEffnungsebene bewegbar sowie mit einem in die OEffnungsebene ragenden Sperrfortsatz (2 a) versehen. Fig. 1{Aufwand; Vorrichtung; Sperren; Fotografie; Kamera; Abdeckschieber; Aufnahmeobjektiv; optische Achse; Schlieszebene; OEffnungsebene; Sperrfortsatz}The invention relates to a device for locking the trigger of a photographic camera. To reduce the cost of producing a device for locking the trigger of a photographic camera as a function of the position of a cover slide for the taking lens of the cover slide (1) from a perpendicular to the optical axis of the taking lens (4) extending closing plane in a parallel to the optical Axle of the taking lens (4) lying opening plane formed deflectable and the camera release (2) perpendicular to said OEffnungsebene movable and provided with a protruding into the OEffnungsebene lock extension (2 a). Fig. 1 {expenditure; Device; Lock; Photography; Camera; dark slide; Taking lens; optical axis; Schlieszebene; OEffnungsebene; Blocking extension}

Description

In einem teilweise dargestellten Kameragehäuse 6 ist das Aufnahmeobjektiv 4 angeordnet. In Lichteinfallsrichtung vor dem Aufnahmeobjektiv 4 befindet sich der Abdeckschieber 1, der manuell betätigbar ist. Der Abdeckschieber 1 besteht aus biegsamem Material und kann aus der Abdeckstellung (vergl. Fig. 1) in die Öffnungsstellung (vergl. Fig. 3) für das Aufnahmeobjektiv 4 umgelenkt werden. Der Kameraauslöser 2 ist senkrecht zur optischen Achse des Aufnahmeojektives 4 bewegbar. Der mit dem Kameraauslöser 2 verbundene Auslöseknopf 7 ragt oben aus dem Kameragehäuse heraus. Am Boden des Kameragehäuses 6 ist die Blattfeder 3 befestigt, die parallel zur Bodenebene federnd ausweichen kann. In ihrer entspannten Ruhestellung befindet sich die Blattfeder 3 im Bewegungsbereich eines Sperrfortsatzes 2a des Kameraauslösers 2 (vergl. Fig. 1 und 2). Gleichzeitig ist die Blattfeder 3 am Ende des Weges vorgesehen, den der Abdeckschieber 1 in der das Aufnahmeobjektiv 4 freigebenden Öffnungsstellung (vergl. Fig. 3 und 4) einnimmt. Eine Kontaktfeder 5 ist im Bewegungsbereich der Blattfeder 3 angeordnet.In a partially illustrated camera body 6, the taking lens 4 is arranged. In the direction of light in front of the taking lens 4 is the cover slide 1, which is manually operable. The cover slide 1 is made of flexible material and can be deflected from the cover position (see Fig. 1) in the open position (see Fig .. 3) for the taking lens 4. The camera shutter 2 is movable perpendicular to the optical axis of the Aufnahmeojektives 4. The shutter button 7 connected to the camera shutter 2 projects up out of the camera body. At the bottom of the camera body 6, the leaf spring 3 is fixed, which can yield resiliently parallel to the ground plane. In its relaxed rest position, the leaf spring 3 is in the range of movement of a barrier extension 2a of the camera release 2 (see Fig. 1 and 2). At the same time, the leaf spring 3 is provided at the end of the path which the cover slide 1 assumes in the opening position releasing the photographing lens 4 (see FIGS. 3 and 4). A contact spring 5 is arranged in the range of movement of the leaf spring 3.

The operation of the device is the following:

Für den Fall, daß mit der Kamera vorläufig keine Aufnahme durchgeführt werden soll, befindet sich der Abdeckschieber 1 in der senkrecht zur optischen Achse des Aufnahmeobjektives 4 verlaufenden Schließebene, so daß das Aufnahmeobjektiv 4 abgedeckt ist (vergl. Fig. 1). In dieser Schließstellung des Abdeckschiebers 1 kann die Blattfeder 3 ihre Ruhestellung einnehmen, wobei die Blattfeder 3 im Bewegungsweg des Kameraauslösers 2 liegt (vergl. Fig. 2). Beim Versuch des Eindrückens des Auslöseknopfes 7 trifft der Sperrfortsatz 2a des Kameraauslösers 2 gegen die Blattfeder 3. In diesem Falle ist der Kameraauslöser 2 gesperrt und kann nicht niedergedrückt werden.In the event that with the camera provisionally no recording is to be performed, the cover slide 1 is in the plane perpendicular to the optical axis of the taking lens 4 closing level, so that the taking lens 4 is covered (see Fig. 1). In this closed position of the cover slide 1, the leaf spring 3 can assume its rest position, wherein the leaf spring 3 is in the path of movement of the camera release 2 (see Fig .. 2). When attempting to press the release button 7, the reverse extension 2a of the camera release 2 hits against the leaf spring 3. In this case, the camera release 2 is locked and can not be pressed down.

Vor dem Durchführen einer fotografischen Aufnahme wird der Abedeckschieber 1 aus der senkrecht zur optischen Achse des Aufnahmeobjektives verlaufenden Schließstellung (vergl. Fig. 1) so weit in die parallel zur optischen Achse des Aufnahmeobjektives 4 liegende Öffnungsstellung bewegt, daß der Abdeckschieber 1 außerhalb des Lichteinfallsbereiches sich in Öffnungsstellung fürdasAufnahmeobjektiv4bnfindet. In dieser Öffnungsstellung erfaßt der Abdeckschieber 1 dieparallel zur Öffnungsebene federnd angeordnete Blattfeder 3 und schwenkt diese aus dem Betätigungsweg des Sperrfortsatzes 2a des Kameraauslösers 2 (vergl. Fig. 3 und 4). In dieser Öffnungsstellung des Abdeckschiebers 1 kann durch Erfassen des Auslöseknopfes 7 der Kameraauslöser 2 ungehindert niedergedrückt werden. Gleichzeitig berührt in dieser Öffnungsstellung des Abdeckschiebers 1 die Blattfeder 3 die Kontaktfeder 5, so daß nur in dieser Öffnungsstellung des Abdeckschiebers 1 βίηε Belichtungssteuervorrichtung 8 sich in Betriebsbereitschaft befindet.Prior to taking a photographic recording of the Abedeckschieber 1 is moved from the perpendicular to the optical axis of the taking lens extending closed position (see Fig. 1) so far in the lying parallel to the optical axis of the taking lens 4 open position that the cover slide 1 outside the light incidence area itself in the opening position for the taking lens 4bnfindet. In this open position, the cover slide 1 detects the leaf spring 3 arranged in parallel to the opening plane and pivots it out of the actuation path of the lock extension 2a of the camera release 2 (see FIGS. 3 and 4). In this open position of the cover slide 1 can be depressed freely by detecting the release button 7 of the camera release 2. At the same time in this open position of the cover slide 1, the leaf spring 3 contacts the contact spring 5, so that only in this open position of the cover slide 1 βίηε exposure control device 8 is in standby mode.

Claims

1. A device for locking the shutter of a photographic camera in response to the position of a cover slide for the taking lens, characterized in that the cover slide (1) from a perpendicular to the optical axis of the taking lens (4) extending closing plane in a direction parallel to the optical axis Shooting lenses (4) lying opening plane is formed deflectable and the camera shutter (2) perpendicular to said opening plane movable and provided with a protruding into the opening plane barrier extension (2a).

2. Device according to claim 1, characterized in that in the opening plane of the cover slide (1) a parallel to the opening plane bendable leaf spring (3) is arranged, which is in its relaxed rest position in the path of the camera shutter (2) provided for the locking extension (2 a) and in its cocked working position of the cover slide (1) is pivotable when the cover slide (1) assumes its open position.

3. Apparatus according to claim 2, characterized in that the leaf spring (3) relative to a contact spring (5) is arranged bendable, with which the leaf spring (3) exclusively in the open position of the cover slide (1) is in contact.

For this 1 page drawings

Field of application of the invention

The invention relates to a device for locking the shutter of a photographic camera in dependence on the position of a cover slide for the taking lens.

Characteristic of the known state of the art

In known arrangements of this kind (eg DE-OS 25 38 917), the camera shutter can be prevented from unwanted depression by locking lever, which are mounted on pivots in the camera body and form the last link of a kinematic chain, which is actuated by the cover slide ago , In order to avoid mating positive connections between the individual links of the transmission chain between cover and locking lever, in particular the locking lever is additionally associated with a return spring, which seeks to keep the locking lever in its defined either as a blocking position or as a release position rest position. Such transmission chains for locking the camera release require considerable effort. In addition, for each rotatable lever easy movement must be guaranteed to ensure the reliability of the locking device.

Object of the invention

The invention aims to reduce the cost of producing a locking device for the camera shutter.

Explanation of the essence of the invention

The object of the invention is to provide the most direct possible locking of the release lever in response to a cover lens protecting the lens. According to the invention this is achieved in that the cover slide is formed deflectable from a perpendicular to the optical axis of the receiving lens extending locking plane in a plane parallel to the optical axis of the taking lens opening plane and the camera shutter is movable perpendicular to said opening plane and provided with a protruding into the Öfmungsebene barrier extension , A special stability for the shutter lock is obtained when appropriate in the opening plane of the cover slide a parallel to the opening plane bendable leaf spring is arranged, which is in its relaxed rest position by way of provided on the camera shutter lock extension and is pivoted in its cocked working position of the cover slide when the Cover slide assumes its opening position. According to a preferred embodiment, the leaf spring is arranged bendable relative to a contact spring, with which the leaf spring is in contact only in the open position of the cover slide.

Embodiment of the invention

The invention is explained with reference to an illustrated and described Alisführungsbeispieles. Show it

FIG. 1: the overall view of a locking device in locked position,

Fig. 2: the schematic plan view in the direction A ,.

Fig. 3: the simplified overall view in the release position and

FIG.

4: the schematic plan view in the direction B.