JPH0517634U - Shutter device for camera - Google Patents

Abstract

(57) [Summary] [Object] To provide a shutter device for a camera, which has a reduced height, is miniaturized, and has a simple structure. [Structure] A shutter substrate 1 having a shutter opening 2 is formed of synthetic resin. A shutter blade for opening and closing the shutter opening 2 is attached to the back side of the shutter substrate 1 and covered with a cover plate 3. A drive mechanism 5 that drives the shutter blades is mounted on the shutter substrate 1. The printed wiring circuit 8 for inputting and outputting an electric signal for operating the shutter blade is provided on the shutter substrate 1.
Formed on the upper surface, the height of the entire shutter device is reduced, and a relay printed board or the like is unnecessary. [Effects] By forming the printed wiring circuit on the upper surface of the shutter substrate without providing it on the upper part of the driving mechanism, the height of the entire shutter device can be reduced and downsizing can be achieved. The structure of can be simplified.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a camera shutter device for exposing a film.

[0002]

[Prior Art]

 FIG. 3 shows a focal plane shutter which is a conventional camera shutter device described in Japanese Utility Model Laid-Open No. 63-45540. A shutter substrate 31 having a shutter opening 32 and a cover plate 33 attached to the back side of the shutter substrate 31 are provided. An open shutter blade group and a closed shutter blade group (both not shown) that open and close the shutter opening 32 are attached to the back surface side of the shutter substrate 31 so as to be covered by the cover plate 33. A drive mechanism 34 for running and driving the group of closed shutter blades is provided on the left side of the shutter opening 32 of the shutter substrate 31 in the figure. The drive mechanism 34 has drive members such as cams, and these drive members are assembled from above by an upper plate 36 screwed to the support shaft 35 of the shutter substrate 31. A printed wiring circuit board 37, to which electric signals for operating the open shutter blade group and the closed shutter blade group are input and output, is attached to the upper surface of the upper plate 36. The printed wiring circuit board 37 is electrically connected to a control board (not shown) that controls the operation of the camera body, and a relay printed board (not shown) is appropriately incorporated to make this connection. ing.

[0003]

[Problems to be solved by the device]

 However, in such a conventional shutter device, since the printed wiring circuit board 37 is disposed on the upper surface of the upper plate 36, the plate thickness of the printed wiring circuit board 37 and the height of the entire shutter device are increased, and the shutter device is small. We couldn't meet the request for conversion. In addition, the circuit configuration was complicated and the assembly was troublesome because a relay printed circuit board was required.

The present invention has been made in consideration of such circumstances, and it is possible to reduce the height of the shutter device, reduce the size thereof, and provide a simple circuit configuration. An object is to provide a shutter device for a camera.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a shutter board made of synthetic resin having a shutter opening, a shutter blade attached to the shutter board for opening and closing the shutter opening, and an electric switch for operating the shutter blade. A printed wiring circuit formed on the shutter substrate for inputting and outputting signals is provided.

[0006]

[Action]

 In the camera shutter device having the above-described configuration, since the printed wiring circuit is formed on the shutter substrate, the printed wiring circuit and the control board on the camera body side can be easily electrically connected and the assembling can be simplified. Further, since the printed wiring circuit board is not required and it is not necessary to dispose the printed wiring circuit board on the upper surface of the upper plate of the drive mechanism as in the conventional case, the height of the entire shutter device can be reduced accordingly.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment in which the present invention is applied to a focal plane shutter. A shutter base plate 1 having a substantially rectangular plate shape is formed of synthetic resin, and a shutter opening 2 is formed at an appropriate position on the shutter substrate 1. A cover plate 3 made of synthetic resin is attached to the back side of the shutter substrate 1. An open shutter blade group and a closed shutter blade group (neither is shown) are covered by the cover plate 3 so as to cover the shutter substrate. It is attached to the back side of 1. In the figure, reference numeral 4 is an arm that supports each shutter blade group.

A drive mechanism 5 is attached to the upper surface of the shutter substrate 1 on the left side of the shutter opening 2 in the figure. The drive mechanism 5 is assembled with drive members such as electromagnets, levers, springs, cams, etc., and the shutter release operation opens the shutter apertures 2 to open the shutter blade group, and after this opening operation, the shutter apertures 2 are opened. The traveling drive of the two sets of shutter blade groups is controlled so that the shutter blade group is closed, thereby exposing the film. The drive mechanism 5 is attached to the shutter substrate 1 by a support shaft 6 provided upright on the left side of the shutter substrate 1, and is provided between an upper plate 7 screwed to the supporting shaft 6 and the shutter substrate 1. It is assembled.

In addition to such a configuration, a printed wiring circuit 8 is patterned on the upper surface of the shutter substrate 1. This printed wiring circuit 8 is a circuit for inputting / outputting an electric signal for operating the shutter blades of each shutter blade group, and a terminal constituting an exposure control coil or a synchro switch is provided at an electrode portion 8a on the left end side thereof. A lead wire 9 for conducting with (not shown) is soldered. A signal transmitting portion 8b for inputting / outputting a signal to / from the camera body is formed on the right end side of the printed wiring circuit 8. By directly forming the printed wiring circuit 8 for operating the shutter blades on the shutter substrate 1 in this manner, the printed wiring circuit substrate 37 as shown in FIG. 3 can be omitted, and the entire shutter device can be omitted. The height can be reduced and the size can be reduced. Further, since the signal transmission part 8b for inputting / outputting signals to / from the camera body can also be formed at an arbitrary position on the upper surface of the shutter substrate 1, the degree of freedom in setting positions of the signal transmission terminals on the camera body side is increased, and the design It will be advantageous.

FIG. 2 shows another embodiment of the present invention, in which the same elements as those in the above embodiment are designated by the same reference numerals. Also in this embodiment, the printed wiring circuit 8 is formed on the shutter substrate 1, and the right end portion of the printed wiring circuit 8 is formed so as to extend to the right end surface of the shutter substrate 1. The right end of the wiring circuit 8 serves as a conduction electrode 10 which is electrically connected to the film sensitivity reading contact (DX contact) of the camera body. By providing the printed wiring circuit 8 with the conductive electrode 10 for connecting to the DX contact in this way, a relay printed board for conducting these is not required, so that the number of parts is reduced, the structure is simplified, and the assembly is easy. There is an advantage that. In this case, the conduction electrode 10 may be brought into direct contact with the DX code printed on the film to achieve conduction.

Although the above embodiment is an example of application to a focal plane shutter, the present invention can be similarly applied to a shutter device having another structure.

[0012]

[Effect of the device]

 As described above, according to the present invention, since the printed wiring circuit for inputting and outputting the electric signal for operating the shutter blade is formed on the shutter substrate to which the shutter blade is attached, the height of the shutter device can be reduced and the size can be reduced. It has the effect that it can be made simple and the structure can be simplified.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a camera shutter device according to the present invention.

FIG. 2 is a perspective view showing another embodiment of a camera shutter device according to the present invention.

FIG. 3 is a perspective view showing a conventional camera shutter device.

[Explanation of symbols]

 1 shutter substrate 2 shutter opening 8 printed wiring circuit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Susumu Hasegawa 934-13 Shikato, Yotsukaido-shi, Chiba Stock company Seikosha Chiba Works (72) Nobuyuki Fukui 934-13 Shikado, Yotsukaido-shi Chiba Prefecture Stock Company Seikosha Chiba Works

Claims (1)

[Scope of utility model registration request] 1. A shutter substrate made of synthetic resin having a shutter opening, shutter blades attached to the shutter substrate for opening and closing the shutter opening, and the shutter substrate for inputting and outputting an electric signal for operating the shutter blade. A shutter device for a camera, comprising: a printed wiring circuit formed on the substrate.