JPS6217801Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a camera that does not require a case or cap to protect the photographic lens, etc. when carried.In particular, it is equipped with an automatic focus adjustment mechanism, and the camera does not require a case or cap to protect the photographic lens, etc. when not photographing. A protective cover is provided to protect the adjustment rangefinder window (hereinafter simply referred to as the rangefinder window), etc. When not shooting, the protective cover is stored inside the camera body and closed, and when shooting, the protective cover is pulled out and opened. This invention relates to a camera designed to do this.

This type of camera prevents the mistake of taking pictures with the lens cap attached, which is the case with conventional cameras, and also eliminates the worry of losing the lens cap. It has various advantages, including a large effect on miniaturization.

However, in this type of camera,
When a light receiving element such as CdS is used in the photometry section of a camera, the light receiving element is covered by a cover etc. that covers the front part of the camera, and immediately after the cover is removed when photographing, the light receiving element is There is a concern that exposure errors may occur due to the response characteristics of the camera and that appropriate exposure may not be obtained.

This idea was created in view of these points.
The objective is to provide a lens protection cover for a camera in which the photometry section can be opened even when the photographic lens, distance measurement window, etc. are covered by the protective cover.

For this purpose, the present invention has an aperture for a photographic lens, an aperture for a distance measurement window, and an aperture for a photometer, and is attached to the camera body so that the drawer can be freely stored and pulled out when not taking pictures and being pulled out when taking pictures. The photographing lens and the distance measuring window are covered by the protective cover when stored when not photographing, and the photometering section is opened through the opening for the distance measuring window, and the photographing lens and the distance measuring window are covered when the photographing is taken out. To provide a camera, wherein each of the apertures is disposed on the protective cover such that a distance window is opened by each of the apertures and a photometry part is opened by the aperture for the photometry part. .

The present invention will be described below based on embodiments shown in the drawings.

Figure 1 is a perspective view showing the shooting state, Figure 2 is a perspective view of the photographing state.
The perspective views, Figures 3 and 4, which show the storage state shown in the figure, show a mechanism for moving the protective cover from the storage state to the shooting state (hereinafter referred to as pop-up) using spring force; in the figure, 1 is the camera body. It is a small camera with various functions such as electric winding and rewinding, automatic exposure using a light-receiving element, and autofocus. 2 is a release button, and 3 is a protective cover equipped with a pop-up type finder, which has an overhanging portion 3a that slidably fits into a groove (not shown) provided in the main body 1, and an arm portion 3b. 4a and 4b are lenses constituting the viewfinder, 5 is a back cover, 6 is a photographic lens, and 7
is the photometry section, 8 and 9 are the autofocus rangefinder windows, 1
0 indicates the pop-up knob of the viewfinder and protective cover.

The protective cover 3 is configured to protect the photographing lens 6 and distance measuring windows 8, 9, etc., which are vertically spaced apart from each other on one side of the photographic lens 6, when not photographing. 4b is integrally provided. This protective cover is housed in the camera body 1 in a closed state as shown in FIG. 2 when not photographing, and is pulled out and opened when photographing. In this way, movement from the cover closed state to the cover open state is performed by operating the knob 10. The mechanism by which the protective cover 3 is operated by the knob 10 is shown in FIGS. 3 and 4. In these figures, 14 is the elongated hole 14
A is a lever that is slidably fitted with dowels 18 and 20 inside the main body, and is interlocked with the knob 10 by fitting with a dowel 10b integrated with the knob 10 in the dowel hole 14b, and is a lever that is interlocked with the knob 10, When stored, the protective cover 3 is engaged with the arm portion 3b to restrict upward movement of the protective cover 3. 15 is a coil spring that moves the cover 3 upward, 16 is a coil spring that moves the lever 14 to the left, 17 and 19 are dowels provided inside the camera body 1 to fix the springs 15 and 16, and 21 is a power source and various electrical appliances. This is a switch whose connection to a circuit (both not shown) is opened and closed by a lever 14.

In the photographing state shown in FIG. 1, the photographing lens 6,
Both the photometry section 7 and the distance measurement windows 8 and 9 are covered with a protective cover 3.
The viewfinders 4a and 4b are also in use, being exposed through openings provided at the top for each viewfinder. At this time, the electric circuit of the camera is connected to the camera's power supply, and when the release button 2 is pressed, the light metering, distance measuring, shutter, etc. circuits are closed, and photography is performed, and then the film is wound. Further, the film is rewound and replaced in this state.

FIG. 2 shows the storage state. In this state, the photometry section 7 is fully exposed through the distance measurement window aperture 12, and both the photographing lens 6 and the distance measurement windows 8 and 9 are covered. The circuit is disconnected from the power supply, and the camera will not operate even if you press release button 2.

The mechanism for performing the above differential operation will be explained with reference to FIGS. 3 and 4. FIG. 3 shows the storage state. The cover 3 is urged upward by a spring 15, but the arm portion 3b is locked by a lever 14. At this time, switch 21 is open. Opening 10a of body 1 to pop up the cover.
When the knob 10 that faces
Close 1. At the same time, the other end is disengaged from the arm portion 3b of the cover, and the cover 3 is moved upward by the spring 15. The range of movement of the cover 3 is restricted by the vertical length of the groove of the main body into which the overhanging part 3a is fitted, and the cover 3 remains at a predetermined position. At this time, as shown in FIG. 4, the lever 14 is locked to the vertical surface of the arm 3b and does not return to its original position, and the switch 21 remains closed. When you push cover 3 after shooting,
The engagement shown in FIG. 4 is released, and the lever 14 is
6 returns to the initial position and the switch 21 opens,
Furthermore, the arm portion 3b is locked.

In this embodiment, in order to miniaturize the camera, a distance measuring optical system and a photometric optical system are arranged within the protrusion of the photographing lens barrel as shown in FIGS. 1 and 2.
Therefore, the protective cover satisfies the required functions within a movable range that is at most the diameter of the photographing lens aperture, which is the maximum aperture.

As described above, in the present invention, even when the photographic lens and the like are covered with a protective cover, the photometry section is not covered, so that the light receiving element is provided with light in the same manner as in the photographing state. Therefore, even immediately after the camera returns to the shooting state, no error occurs in exposure due to the response characteristics of the light receiving element.

Furthermore, in the above embodiment, since the aperture used for photographing is used as the aperture for exposing the photometric section during storage, there is no need to provide a separate opening that is unnecessary for photographing. Therefore, it is advantageous for miniaturization during photographing due to the phenomenon of cover slide width and for improving aesthetic appearance. In the above description, an embodiment in which the protective cover is pushed up by a spring has been described, but the protective cover may be moved up and down by hand, or may be moved up and down electrically. In this case, both the top and bottom can be set automatically.

Although the protective cover is provided with an opening in this embodiment, the same effect can be obtained without providing an opening if the portion of the protective cover corresponding to the opening is made of, for example, a transparent member through which light can pass.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the camera equipped with a protective cover according to the present invention, showing the shooting state, Fig. 2 is a perspective view showing the stored state of Fig. 1, and Figs. 3 and 4 show the pop-up mechanism. A detailed view is shown. 1...Camera body, 2...Release button, 3
...Protective cover, 3a... Overhang, 3b...
Arm portion, 4a, 4b... Finder lens, 5...
...Back cover, 6...Photographing lens, 7...Photometering section, 8,
9... Rangefinder window for automatic focus adjustment, 10... Knob,
10a...Knob opening, 10b...Protrusion, 11
...Aperture for photographing lens, 12...Aperture for distance measuring window,
13...Aperture for photometry section, 14...Lever, 14a
...Elongated hole, 14b...Small hole, 15, 16...Spring, 17, 18, 19, 20...Dowel, 21...
Power circuit switch.

Claims (1)

[Scope of utility model registration request] It has an aperture for the photographic lens, an aperture for the distance measurement window, and an aperture for the photometry section, and a protective cover that is attached to the camera body so that it can be stored and pulled out when not photographing, so that it can be stored when not photographing. Sometimes, the photographing lens and the distance measuring window are covered by the protective cover and the photometry section is opened through the opening for the distance measuring window, and when the photographing drawer is pulled out, the photographing lens and the distance measuring window are covered by the respective openings. A camera characterized in that each of the openings is disposed on the protective cover so that when the opening is opened, the photometric section is opened by the opening for the photometric section.