JPH09211639A - Camera having information recording function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily move a pressure plate and a transmission circuit board for inspecting and adjusting the motion of a camera and thereafter fit the pressure plate and the like to the camera accurately and easily by disconnecting flexible cables connected to the turning end side through connectors, and turning the circuit board and the pressure plate. SOLUTION: The connectors (male) 43-45 of a hard circuit board 20 are detachably connected to the connectors (female) 51c-53c of flexible cables 51-53, and the terminals 46-48 of the hard circuit board 20 are connected to the terminals of flexible cables 54-56 by soldering. Such connecting construction of the upper and lower end parts different from each other is set in order to open the opening part 3 for exposure of a camera body 1 by disconnecting the lower end part side at inspecting and adjusting the camera. The hard circuit board 20 is rotatably supported with a hinge part 13, and hence it becomes turnable by releasing screw fastening to the camera body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera having an information recording function using a film having a recording portion for recording magnetic information and the like.

[0002]

2. Description of the Related Art Recently, a film having a magnetic recording section is used, and various kinds of photographing information are written in the magnetic recording section by a magnetic head mounted on a camera, and the photographing information is read out if necessary. A camera that does this is proposed. Then, in this type of camera, it is known to use a so-called thrust delivery type film cartridge in which the film stored in the cartridge is delivered by rotating the spool (for example,
See JP-A-6-35059).

In a camera loaded with such a film cartridge, it is not necessary to pull out the leading end portion (leader portion) of the film from the cartridge and wind the film around the sprocket, so that the back cover is opened unlike the conventional camera. It is not necessary to provide a mechanism for Therefore, the back surface of the film exposing portion may be covered with a fixing member, and a pressure plate for controlling the film surface position by sandwiching the film in the gap with the camera body, which is conventionally attached to the back cover, is provided. It is possible to simplify the configuration by fixing it to the main body of the.

[0004]

By the way, in such a camera, there is a case where it is necessary to remove the pressure plate in order to open the opening for exposure in order to inspect and adjust the camera operation. In this case, if the pressure plate is fixed to the body of the camera, the work of removing the pressure plate is not easy, and once removed, the work of attaching the pressure plate again with high precision is troublesome and inefficient. Also, when an electric circuit board is mounted on the pressure plate via a holder for holding the pressure plate, etc., a flexible cable or the like is electrically connected to the electric circuit board. , The camera cannot operate and inspection / adjustment cannot be performed. Therefore, in order to avoid disconnecting the electrical connection of the flexible cable to the electrical circuit board, an extra long flexible cable is required, which increases the cost.

The present invention has been made in order to solve the above-mentioned problems, and in a camera using a film having an information recording portion, a pressure plate for sandwiching the film in a gap between the camera body and the camera body is provided with a pressure plate. When fixed to, the pressure plate and electrical circuit board can be easily moved to open the exposure opening for inspecting and adjusting the camera operation. Accurate mounting is also easy and efficient, and there is no need to disconnect a part of the electrical connection of the flexible cable to the electrical circuit board, so it is not necessary to use a long flexible cable, and cost can be reduced. It is an object to provide a camera having an information recording function.

[0006]

In order to achieve the above object, the invention of claim 1 is, in a camera having an information recording function using a film having an information recording portion, sandwiching the film in a gap with a camera body. A circuit board is arranged on the back side of the pressure plate that regulates the position of the film surface with the circuit board. The circuit board is fixed to the camera body and is rotatably held around one end side when the fixation is released. A flexible cable for electrically connecting to an electric component built in the camera is soldered to the terminal of the circuit board at the one end side and is connected to the terminal on the other end side by a connector. In the above structure, when the circuit board is unfixed to the camera body, the circuit board and the pressure plate can be rotated around the one end holding side, and the flexible end is connected through the connector. By removing the cable and rotating the circuit board and the pressure plate, the exposure opening can be opened, and the camera operation can be inspected and adjusted. After that, if the circuit board and the pressure plate are rotated, they can be easily returned to their original positions with high accuracy.

According to a second aspect of the present invention, in the structure according to the first aspect, the pressure plate is mounted on a pressure plate holder made of an elastic body pivotally supported by the camera body, and the circuit board is on the back side of the pressure plate holder. And is integrally fixed to the camera body together with the pressure plate and the pressure plate holder. In this configuration, in addition to the above operation, by fixing the circuit board to the camera body, it is possible to mount the pressure plate on the camera body with a small number of parts while applying a biasing force in the film surface direction.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a camera body, which is a frame in which an outer cover of a camera using a film having an information recording portion is removed, viewed from the rear side. The present camera is a camera in which a film having a magnetic information recording unit is used and a film cartridge of a so-called thrust feeding system in which the film is fed by rotating a spool is loaded. The camera body 1 is provided with a cartridge chamber 2 into which a film cartridge is loaded at one end side, an exposure opening 3 is opened at the center, and a spool chamber 4 is provided at the other end side. Guide members 5 for guiding and feeding the film are formed at the upper and lower edges of the opening 3. Although not shown, a photographing lens, a lens mechanism, a shutter mechanism, etc. are provided in front of the opening 3, and a mechanism for feeding a film is attached around the camera body 1. The outer case is assembled so as to cover the surroundings.

FIG. 2 is an exploded perspective view of a pressure plate, a pressure plate holder and a hard circuit board arranged on the back side of the camera body 1. The pressure plate holder 12 is arranged so as to sandwich the pressure plate 11 so as to face the opening 3 for exposure on the back side of the camera body 1.
Is attached. The pressure plate 11 is made of metal and regulates the film surface position by sandwiching a film in the gap between the pressure plate 11 and the camera body 1. It This holding is performed by fitting the protrusions 11a, 11b, 11c of the pressure plate 11 into the holes 12a, 12b, 12c of the pressure plate holder 12, respectively. The pressure plate holder 12 is rotatably mounted by fitting a hinge portion 13 extending from the upper end of the pressure plate holder 12 to a pin 15 of an engaging piece 14 formed on the upper rear end of the camera body 1. Also, the pressure plate holder 1
A hard circuit board 20 on which electronic circuit components are mounted is mounted on the back side of 2. This installation is done with the pressure plate holder 12
This is performed by engaging the claw piece 12d, the hole 12e, and the cut 12f with the hole 20d, the claw 20e, and the upper edge 20f of the hard circuit board 20, respectively.

The pressure plate 1 held and mounted as described above.
1, the pressure plate holder 12 and the hard circuit board 20 are integrated, and the hard circuit board 20 is attached to the opening 3 of the camera body 1.
It is fixed to the back corresponding to. This fixing is performed by screwing the screws using the screw holes 21a, 21b, 21c provided on the back surface of the camera body 1 and the screw holes 22a, 22b, 22c of the hard circuit board 20. By fixing the hard circuit board 20 to the camera body 1, the pressure plate holder 12 is in a state where it can apply a biasing force to the pressure plate 11 in the film surface direction due to its elasticity.

A magnetic head 23 is attached to the pressure plate 11 so as to come into contact with a film surface fed with a gap from the camera body 1 and to magnetically write and read various kinds of information regarding photographing in the magnetic recording portion thereof. Corresponding to the magnetic head 23, the window 2 is provided with a pad 2 on the camera body 1 side.
5a is provided in a protrudingly biased state by a spring 25b. A guide portion 12g for guiding the film to the spool chamber 4 is provided at the end of the pressure plate holder 12 on the film feeding direction side.
Are integrally formed.

The camera of this embodiment has an optical imprinting function of imprinting various kinds of information on photographing at a predetermined position outside the photographing exposure area of the film, instead of magnetically writing to the magnetic recording portion of the film by the magnetic head 23. It is also possible to make it. In that case, the magnetic head 23 is not mounted on the pressure plate 11, but a light emitting diode (LED) is mounted on the optical imprinting piece 26 of the hard circuit board 20, and the light emitted from this light emitting diode is the pressure plate 11 and the pressure plate holder. It is configured to reach the film surface through 12 notches. When the optical imprinting function is not provided, the optical imprinting piece 26 is cut off. Further, the camera body 1 is provided with photo interrupters 41 and 42 for counting the perforations of the film in order to control the stop of the film feeding.

The hard circuit board 20 has various electronic components, for example, an IC such as a CPU for controlling the entire camera.
(See FIG. 3) and the like, and connectors 43, 44, 45 for detaching flexible cables for electrically connecting various camera electrical components and terminals 46, 47, 48 for soldering connection. Are arranged. The former connectors 43, 44, 45 are near the lower end of the hard circuit board 20 on the side opposite to the axis of rotation, and the latter terminals 46, 47, 48 are near the upper end of the hard circuit board 20 near the axis. Each is provided.

FIG. 3 shows a connection structure of the flexible cable to the hard circuit board 20. Hard circuit board 20
Connector (male) 43, 44, 45 of the flexible cables 51, 52, 53 of the connector 51c, 52c,
53c (female) is detachably connected to the hard circuit board 2
The terminals of the flexible cables 54, 55, and 56 are soldered to the terminals of 0, 46, 47, and 48. In this way, the connection structure is changed between the upper and lower ends so that the exposure opening 3 of the camera body 1 can be opened by disconnecting the connection on the lower end side during inspection and adjustment of the camera. This is because. Here, since the pressure plate 11, the pressure plate holder 12, and the hard circuit board 20 are pivotally supported by the hinge portion 13 (FIG. 2), by releasing the screw fixing of the hard circuit board 20 to the camera body 1, It becomes rotatable.
In FIG. 3, the hard circuit board 2 is shown after releasing the screw fixing.
It shows a state in which the lower end portion such as 0 is rotated around the hinge portion 13 to open the opening portion 3. In this state,
It is possible to measure and adjust the shutter speed.

FIG. 4 shows an electric circuit block of the camera of this embodiment. In the figure, a circuit included in the hard circuit board 20 is surrounded by a chain line B. Hard circuit board 2
0 is equipped with a CPU for system control, AF, AE, mechanical control, etc., a sub-microcomputer for key scan, etc. The lines of arrows connecting the hard circuit board 20 and various electrical components connected thereto correspond to the flexible cables 51 to 56. Specifically, the objects connected to the hard circuit board 20 by the flexible cables 51, 52, 53 on the lower end side are, respectively, in order.
It is a distance measuring component such as an AF sensor, a photometric component such as a dimming IC that measures the brightness of the film surface, a control motor and the like. On the other hand, the objects connected to the hard circuit board 20 by the flexible cables 54, 55, 56 on the upper end side are the external flash, the DC / DC converter, etc.
An E sensor, a remote controller, and the like. These allocations are
Even if the flexible cables 51, 52, 53 on the lower end side are disconnected, the flexible cables 54, 5 on the upper end side are disconnected.
It should be taken into consideration that the basic operation of the camera can be maintained if the connections of 5,56 are made.

As shown in FIG. 3, inspection / adjustment performed with the opening 3 open includes shutter speed adjustment, inspection of whether the entire shutter film is running evenly, and lens back adjustment. To be For example, the lens back adjustment may be performed by disposing a measuring instrument using a CCD in the opened opening 3 and adjusting the lens position based on the output thereof. Also, the flexible cable 5 on the lower end side
It is suitable for an inspection target that can be operated by a camera manually, which can be operated without any trouble even when the connection of 1, 52, 53 is disconnected.

In the camera according to the above-described embodiment, a rigid cover member is not required to attach the pressure plate 11, and the pressure plate 11 is urged by using the fixing of the hard circuit board 20 itself to the camera body 1. It can be attached to the camera body 1 in the attached state,
The number of parts and the number of installation steps can be reduced, and the cost can be reduced. Furthermore, with the hard circuit board 20 mounted on the camera, the pressure plate 11 can be freely removed to inspect the camera operation.
It becomes possible to make adjustments. Further, by dividing the connector and the terminal on the hard circuit board 20 to which the flexible cable is connected into the upper and lower ends on the same board 20, compared to the case where the connector and the terminal are biased to one side without being divided in this way. The terminals can be efficiently distributed around the substrate 20, the circuit wirings do not intersect, and the limited substrate area can be effectively utilized.

[0018]

As described above, according to the invention of claim 1,
In a camera having a recording function of magnetic information, etc., when the circuit board and the pressure plate are released from being fixed to the camera body, the circuit board and the pressure plate are rotatable around one end side thereof, and the connector is attached on the rotation end side. By removing the flexible cable connected via the circuit board and rotating the circuit board and the pressure plate, the exposure opening can be easily opened, and inspection / adjustment such as shutter operation can be efficiently performed. . Further, thereafter, by rotating the circuit board and the pressure plate, it is possible to easily return to the original position with high accuracy.

According to the invention of claim 2, in addition to the above effects, by fixing the circuit board to the camera body from the back side of the pressure plate holder made of an elastic body axially supported by the camera body, at the same time, Since the pressure plate and the pressure plate holder can be fixed to the camera body, by fixing the circuit board to the camera body, it is possible to attach the pressure plate to the camera body with the biasing force applied in the film surface direction. The number of parts is sufficient, and cost can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a camera body according to an embodiment of the present invention as viewed from the rear side.

FIG. 2 is an exploded perspective view of a pressure plate, a pressure plate holder, and a hard circuit board arranged on the back side of the camera body.

FIG. 3 is a perspective view showing a connection configuration of a flexible cable to a hard circuit board.

FIG. 4 is an electric circuit block of a camera.

[Explanation of symbols]

1 Camera Body 11 Pressure Plate 12 Pressure Plate Holder 13 Hinge 20 Hard Circuit Board 43,44,45 Connector 46,47,48 Terminal 51,52,53,54,55,56 Flexible Cable

Claims (2)

[Claims] 1. In a camera having an information recording function using a film having an information recording portion, a circuit board is arranged on the back side of a pressure plate that regulates the film surface position by sandwiching the film in a gap with a camera body. The circuit board is fixed to the camera body and is rotatably held around its one end side when the fixation is released, and the terminals of the circuit board are connected to the electrical components of the camera. A camera having an information recording function, wherein a flexible cable for electrical connection is soldered on the one end side and connected by a connector on the other end side of rotation. 2. The pressure plate is mounted on a pressure plate holder made of an elastic body that is axially supported by the camera body, and the circuit board is arranged on the back side of the pressure plate holder, and integrally with the pressure plate and the pressure plate holder. The camera having an information recording function according to claim 1, wherein the camera is fixed to the camera body.