JPS6144201Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a data imprinting device for a camera, more specifically, a data imprinting device inside the back cover of the camera, and an electric circuit including its electric circuit and a power supply inside the camera body. The present invention relates to a data imprinting device that connects the data imprinting device and the data imprinting device using a flexible electric cord.

As is well known, cameras that use a focal plane shutter, such as single-lens reflex cameras, use slit exposure to expose the film. This cannot be done without seeing the front of the film.

Therefore, in a single-lens reflex camera, a data imprinting device is provided on the back cover side so that the back side of the film can be seen and data can be imprinted onto the film.

However, with this configuration, in order to synchronize the lighting operation of the data imprinting device with the opening and closing of the shutter, it is necessary to connect the lighting circuit of the imprinting device to the synchronization contact terminal of the shutter located on the side of the camera body. There is a need to. However, since the back cover and the camera body can be opened and closed and are separated, some effort is required to easily connect them electrically.

Therefore, conventionally, as shown in FIG. 1, electrical connection terminals 1b and 2b are provided on opposing surfaces 1a and 2a of the camera body 1 and back cover 2, and these contact when the back cover is closed to connect the two electrically. However, a so-called direct contact connection method was used.

However, with this connection method, the electrical connection between the two is cut off when the camera back is open, so the data imprinting device is powered by the camera's own power source, and the If the camera has a photography mechanism, the clock will stop every time the power is cut off, making it impossible to obtain accurate photography time and date and time, making it impossible to use the power supply inside the camera body. .

Therefore, in such a data imprinting device that imprints time, it is necessary to provide a power source for the back cover in addition to the power source for the camera body, which is uneconomical. This had the disadvantage that the camera as a whole, especially the back cover, became larger.

In addition, as shown in Figure 2, there is also a camera in which the back cover containing the data imprinting device and the synchronization contact terminal on the side of the camera body 3 are externally connected using an electrical connection cord 5. In data imprinting devices, strobes that cannot be used with hot shots use the synchro contact terminal described above, so they have the disadvantage that they cannot be used as a strobe and data imprinting device at the same time. This is not a desirable connection method from both the appearance and the operability of the camera.

In view of the above points, the purpose of this invention is to use a flexible electrical cord to electrically connect the camera body and the back cover with the data imprinting device, and to install the cord near the back cover opening/closing axis of the camera body. The above-mentioned conventional drawbacks are solved by routing the wire through the recess, and folding the cord that extends when the back cover is opened into the recess using the cord folding member provided on the back cover when the back cover is closed. The purpose is to provide a data imprinting device for cameras.

Hereinafter, the present invention will be explained based on an illustrated embodiment.

FIG. 3 is a perspective view of the code folding mechanism in the data imprinting device of the present invention.

This code folding mechanism 10 includes a recess 11 provided in the camera body near a back cover opening/closing shaft 8 that supports the back cover 7 having a data imprinting device on the camera body 6 so as to be freely openable and closable. A band-shaped flexible electric cord 12 connects the electric circuit for controlling the start of imprinting of the power supply and synchronization contacts in the camera body 6 and the electric circuit of the data imprinting device on the back cover 7 through the recess 11; 12 and a cord folding member 13 that accommodates the cord folding member 12 in the recess 12 in response to the back cover closing operation.

The recess 11 is provided at a position corresponding to the lower part of the back cover opening/closing shaft provided, for example, on the right side surface (in FIG. 3) of the camera body 6. As shown in FIG. 5, a square hole 14 is provided through which a flexible electrical cord 12 is inserted into the camera body 6.

The flexible electric cord 12 is formed of a flat, flexible strip-shaped printed board, and is disposed through the recess 11 as shown in FIG. 4. That is, the flexible cord 1 is inserted from the electric circuit (not shown) of the data imprinting device provided on the back cover 7 through the inner surface of the back cover 7 (see FIG. 3).
2 is guided into the recess 11 through between the cord folding part 13 and the back cover opening/closing shaft 8, and the shaft 8 is
After being wound in a letter shape, it extends vertically downward (in FIG. 4), passes through the square hole 14, is bent at a right angle, and is guided to an electric circuit section (not shown) in the camera body 6. It's becoming like that.

The code folding member 13 is formed of a presser plate that is integrally provided with the back cover 7 at a position corresponding to the recess 11 of the back cover 7, and as shown in FIG.
Its upper end surface is rounded to prevent damage to the flexible electrical cord 12 when it rotates together with the back cover 7 to fold up the flexible electrical cord 12.

Next, the action of the cord folding mechanism 10 will be explained in the fifth section.
This will be explained with reference to Figures A and B. Figure 5A shows the back cover 7.
is a cross-sectional view showing the extended state of the flexible electric cord 12 in a position where it is opened with respect to the camera body 6, and the electric cord 12 is connected to the cord folding member 13 formed by the above-mentioned holding plate and the back cover opening/closing. After passing between the shafts 8 and surrounding the same shaft 8, the shaft 8 enters the recess 11, bends downward, passes through the square hole 14, and extends into the camera body 6.

When the back cover 7 is rotated 180 degrees around the axis 8 from the open position as described above, the back cover 7 is placed in the closed position relative to the camera body 6 as shown in FIG. 5B. The cord folding member 13 integrated with the back cover 7 also rotates 180 degrees around the back cover opening/closing shaft 8 while holding the flexible electric cord 12 therebetween. Then, this folding member 1
3, the portion of the flexible electrical cord 12 loosened by the rotation of the back cover 7 is neatly folded into the recess 11 in an S-shape as shown in FIG. 5B.

This cord folding mechanism 10 ensures smooth folding of the flexible electrical cord 12 by appropriately configuring the shape of the recess 11, the shape and arrangement position of the cord folding member 13, etc. can be done.

As explained above, according to the present invention, the flexible electric cord that electrically connects the camera body and the back cover having the data imprinting device is skillfully arranged in the cord folding mechanism. Therefore, the drawbacks of conventional data imprinting devices of this type can be overcome.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main parts of a conventional direct contact connection type contact mechanism, Fig. 2 is a front view of a conventional example of connecting a data imprinting device and a synchronization contact of a camera, and Fig. 3 is , FIG. 4 is a perspective view of a main part of a code folding mechanism in a data imprinting device showing an embodiment of the present invention, FIG. 4 is a perspective view showing the arrangement of the flexible electric cord in FIG. Figures A and B are cross-sectional views showing the folding action of the cord folding mechanism shown in FIG. 3 above. 6... Camera body, 7... Back cover, 8... Back cover opening/closing shaft, 11... Recess, 12... Flexible cord, 1
3... Cord folding member (pressing plate).

Claims (1)

[Scope of Claim for Utility Model Registration] A camera in which an electric circuit for data imprinting built into the back cover which is rotatably supported on the camera body is connected to an electric circuit for starting imprinting on the camera body side. In the data imprinting device, a recess formed in the side wall of the camera body at a position facing the shaft support, a through hole provided in the wall of the recess, and a predetermined gap between the shaft support and the side wall of the back cover. and a folding member integrally provided on the back cover at a position where it enters the recess when the back cover is closed, and between the through hole, the recess, the pivot support, and the folding member, A flexible conductive member connects the electric circuit on the camera body side and the electric circuit on the back cover side through a space between the folding member and the side wall of the back cover, and when the back cover is closed, the conductive member is connected to the folding member by the folding member. A data imprinting device for a camera, characterized in that the data is folded and stored in a recess.