JPS6142626A - Data imprinting device of camera - Google Patents

Abstract

PURPOSE:To connect the circuits of a back cover side and a body side without requiring a flake and a sag space of a lead wire by providing an inserting liquid crystal and an outside displaying liquid crystal on the inside surface and the outside surface of a back cover side substrate, and executing an electrical connection by a conductive torsion coil spring wound round an opening and closing shaft. CONSTITUTION:An imprinting liquid crystal 4 and an outside displaying liquid crystal 3 are provided on both faces of a back cover side substrate 9. A conductive torsion coil spring 6a and 6b are wound to the periphery of back cover opening and closing shafts 7a, 7b respectively, and both ends of each of them are soldered to the back cover side substrate 9 and a body side substrate 8 by solder parts 10a, 10b and 11a, 11b. By said torsion coil spring 6a and 6b, a power source of the body side is supplied to a liquid crystal on the back cover side substrate 9. Also, contact pins 12a-12c provided on the camera body side contact to trigger terminals 13a-13c of the back cover side substrate, and an inserting trigger signal is transferred.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an improvement in a data imprinting device for imprinting date and other data onto film using a liquid crystal clock built into the back cover of a camera.

[Background of the invention]

(Conventional) Various methods have been implemented to incorporate an LCD clock into the back cover of the camera to perform data recirculation, and most of them include a power supply for driving the LCD clock on the back cover, in addition to the power supply on the camera body side. It also has a power source. In this case, one terminal of the bird is placed on the back cover side, and when the back cover is closed, one terminal of this bird comes into contact with the contact pin provided on the main body side, thereby establishing a synchronized light emitting circuit with the camera side. It is supposed to be done. In other words, regardless of whether the back cover is opened or closed, the power supply circuit for driving the LCD watch is always established by the power supply on the back cover side, and the synchronized light emitting circuit is established only when the back cover is closed. It becomes possible. Such a data copying device requires two types of power sources for the camera, one on the main body side and one on the back cover side, which is disadvantageous in terms of ease of use and cost.

Therefore, a system has been implemented in which the power supply for the camera is provided only on the main body side, and this power supply also drives the LCD clock on the back cover side. are connected by flexible cables or lead wires, but since the rotation angle when opening and closing the back cover is large, it is necessary to secure enough space for the flexible cables and lead wires to slacken, which results in an increase in the camera size. It had drawbacks.

9. For example, FIGS. 5 and 6 are cross-sectional views of a conventional data relay device, showing the back cover in a closed state and an open state, respectively. These will be explained first.

'l is the camera body, and 2 is the back cover. A thick liquid crystal 4 and an external display liquid crystal 3 are provided on both sides of the back cover side substrate 90, and 5 is a display window. 7 is a back cover opening/closing axis.

The main body side board 8 and the back cover side board 9 are connected by the solder parts 111 and 10 by the 7-receptacle 61C.As shown in the AX1 diagram, when the back cover 2 is closed, the flexible board 6 is in a closed state. It looks like this. That is, the length of the flexible cable 6 is determined so that it does not stretch when the back cover 2 is open, so a slack space is required when the back cover 2 is closed. The same thing can be said if you use a lead wire instead of the 7-leg 6.・ [Object of the invention] The present invention has been made to eliminate the drawbacks of the above-mentioned conventional example, and it is possible to connect the circuit between the back cover side and the main body side without requiring a 7-wire cable or a slack space for lead wires. The purpose of this invention is to provide a data zero connection device with

[Summary of the invention]

In order to achieve the above object, the gist of the present invention is to install a thick liquid crystal and an external display liquid crystal on the inner and outer surfaces of the back cover side substrate of the back cover, which is pivotally connected to the camera body by an opening/closing shaft. the two liquid crystals are electrically connected to the power source of the camera body through the back cover side substrate, and the electrical connection is connected to the opening/closing switch. The data zero link device of the camera is characterized by the fact that it is performed by a coiled conductive screw] and a coil spring.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing one embodiment of the present invention, with the back cover closed, and FIG. 2 similarly showing the back cover in its open state. FIG. 3 is a side view with the back cover open. In FIGS. 1 to 3, 1 is a camera body, and 2 is a back cover. A thick liquid crystal 4 and an external display liquid crystal 3 are provided on both sides of the back cover side substrate 9.
5 is a display window. Reference numerals 7a and 7b are back cover opening/closing shafts, and conductive screw coil panels 6a and 6b are respectively wound around the shafts, and both ends are soldered to the back cover side board 9 and the main body side board 8, respectively. IQ
It is soldered to a, ;10b, lla, and llb. That is, power from the main body is supplied to the liquid crystal on the back cover side substrate 9 through the screw coil panels 6& and 6b.

Also, Figure 4 shows the cross section 0A-A in Figure 3.
Contact bins 12a, 12 provided on the camera body side
b, 12a are trigger terminals on the back cover side board 13m, 13b
, 13a) This transmits the imprint trigger signal. When the back cover 2 is open, the contact bins 12aj 12b+12o and the trib terminals 13m, 13b, and 13c are not in contact with each other. However, data is not imprinted when the back cover 2 is open, so it is inconvenient that they come into contact only when the back cover 2 is closed.

〔Effect of the invention〕

As explained above, the present invention is achieved by attaching a conductive screw coil panel to the back cover opening/closing shaft and connecting both ends of the legs to the circuit board on the back cover side and the circuit board on the camera body side, respectively. Since the power supply from the camera body side is supplied to the circuit on the back cover side, the mounting layout secures slack space for flexible cables and lead wires like the conventional one! There is no need to connect the camera body side and the back cover side using
This has the advantage that the space inside the camera can be used effectively and the camera can be made more compact.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a camera having a data imprinting device according to an embodiment of the present invention, particularly showing a state in which the back cover is closed;
Figure 2 is a sectional view showing the back cover in an open state, the third factor is a side view with the back cover open, and Figure 4 is a sectional view taken along line A-A in Figure 3. It is. FIG. 5 is a cross-sectional view of a camera equipped with a conventional r-tapering device, particularly showing the back cover in a closed state, and FIG. 6 is a cross-sectional view showing the back cover in an open state. 1...Camera body 2...Back cover 3...LCD for external display 4°°°LCD for photographing 5...Display window
6...Flexible cable 6m, 6b...Screw] Coil spring 7.7as7b...Back cover opening/closing shaft 8...Body side board 9...Back cover side board 10
r 10 m + 10 b ・/% under part 11.11
m, 41b/A: y'2 part 12m, 12b, 12cm contact pin 13m, 13
b, 13a = 1 rigger one terminal Fig. 11a: C8/dap

Claims (1)

[Claims] A photographing liquid crystal and an external display liquid crystal are provided on the inner and outer surfaces of the back cover side substrate of the back cover, which is pivotally connected to the camera body by an opening/closing shaft, and the two liquid crystals are connected to the camera body through the back cover side substrate. A data recording device for a camera electrically connected to a side power supply, characterized in that the electrical connection is made by a conductive torsion coil spring wound around the opening/closing shaft. Imprinting device.