JPH0682891A - Electric circuit connecting structure for camera - Google Patents

Abstract

PURPOSE:To eliminate work for folding/housing a connecting cable and to prevent disconnection by adopting connection structure for connecting a top cover, etc., with the electric circuit of a camera main body side in an exposed state where an outer packaging member is attached. CONSTITUTION:A main body 1 is covered with the top cover 16 from the above and the top cover 16 is tightened/fixed by a screw, etc., to complete mechanical connection. After that, an attaching hole 21a made on a connecting FPC 21 extended from the top cover 16 is inserted into a positioning pin planted on a part of a front plate 8. At this time, a connecting terminal 13b provided on a main FPC (flexible printed circuit board) 13 and a connecting terminal 21b provided on the connecting FPC 21 face each other. In this state, the connecting terminals 13b and 21b are soldered and electrically connected. Moreover, the connecting terminal 22a of a lead 22 extended from the top cover and the connecting electrode 13c of the main FPC face each other and are soldered/electrically connected, similarly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera electric circuit connection structure, and more particularly to a flexible printed wiring board connection structure.

[0002]

2. Description of the Related Art Recently, cameras have been remarkably multifunctional, so that electronic functions have been advanced and electric circuits incorporated in the cameras have been increased.

Since the number of circuit boards also increases as the number of electric circuits increases, the number of connection points between circuit boards naturally increases, complicating the assembling workability of the camera.

For example, Japanese Unexamined Patent Publication (Kokai) No. 62-141524 and Japanese Utility Model Laid-Open No. 1-123846 disclose a connection structure with improved workability.

Generally, as shown in the above-mentioned disclosure example, the circuit board of the camera is an F.S. P. C. (flexible printed circuit board), is wound around the camera body, and a plurality of F.S. P. Cs are electrically connected to each other.

However, the scale of electric circuits has been increasing year by year, and a large number of electric mounting parts are mounted not only on the camera body but also on the exterior parts of the camera body.

Among the exterior parts of the camera body, it is the upper lid that is mounted with many electrical mounting parts, such as a built-in strobe circuit, an actuator for driving the same, an external connection connector (a shoe terminal), a mode selection dial, and the like. Units are located. Conventionally, electrical connection between the electric circuit of the unit on the side of the upper lid and the main circuit on the side of the main body of the camera is performed by connecting the main F.D. P. C and F. for connection. P. C or a lead wire (a stranded vinyl wire) or the like was used, as disclosed in Japanese Utility Model Laid-Open No. 1-171435, above or in the vicinity of the penta roof surface.

[0008]

However, in the above-mentioned conventional example, when connecting the electric circuit mounted on the upper lid side and the electric circuit on the camera body main body side, before attaching the upper lid to the camera body main body, That is, since the connection must be made with the top lid removed from the camera body, the connection cable (FPC or lead wire) used for the connection should be made longer than necessary and an extra portion should be provided. I have to go.

Next, when the upper lid is attached to the camera body, the F. P. The extra portion of C or the lead wire must be folded and stored in a small space between the top cover and the camera body. However, when installing the upper lid on the camera body,
Since it is not visible to the operator, not only the workability at the time of assembling is significantly deteriorated, but also this surplus portion is pinched when the upper lid is attached, which causes an accident such as disconnection.

It is an object of the present invention to provide an electric circuit connection structure for a camera which solves the above conventional problems.

[0011]

The structure for achieving the object of the present invention is as set forth in the claims, and more specifically, the flexible printed wiring forming the electric circuit on the camera body main body side. A camera that sandwiches a connecting portion between a plate and a flexible printed wiring board that forms an electric circuit of an upper lid attached to the camera body body when the exterior member is attached to the camera body body, for example, a camera mount. It is characterized in that it is provided on the front surface of the body body.

Therefore, since the connection portion is exposed when the upper lid is attached to the camera body, the connection work such as soldering can be performed reliably and easily, and the cable disconnection accident can be prevented.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first embodiment of the present invention, in which 1 is a camera body main body (hereinafter abbreviated as main body), and 1a is a battery storage chamber formed in the main body 1. To store. Reference numeral 2 is an electronic dial unit for controlling a control value of the camera, 3 is a release switch, and 4R and 4L are suspension rings of the camera, both of which are attached to the main body 1. 5 is a main condenser for the built-in strobe, 6 is a strobe circuit for controlling the main condenser 5,
Each is attached to the lower surface of the main body 1. 7 is DC / D
The C converter is also fixed to the lower surface of the main body 1 and supplies power to the circuit of the camera. 8 is a front plate,
It constitutes the mirror box of the camera. 8a is front plate 8
Positioning pins implanted in the main F.
P. C13 and top F. P. C21 is positioned.
Reference numeral 9 is a camera mount attached to the front plate 8, and 10 is a pentaprism fixed to the upper portion of the front plate 8.

Reference numeral 11 is a 45 ° mirror, and 12 is a signal contact unit for transmitting and receiving electrical signals to and from an interchangeable lens (not shown), which constitutes the inside of the mirror box of the front plate 8.
In this state, the front plate 8 is integrally fixed to the main body 1 to form a camera body main body.

Reference numeral 13 denotes a main F.C. which constitutes a main circuit of the camera. P. It is C and is attached so as to be wound around the camera body. At this time, the main F. P.
C13 includes a pin 8a implanted on the front plate, a main F.
P. It is positioned by the positioning hole 13b formed in C13 on the left side of the mount 9 on the front surface of the camera, and is unfolded to the upper surface of the main body. Furthermore, the main F. P. C13 spreads on the right upper surface of the main body 1 along the pentaprism 10 and further on the right front surface of the main body 1. 13b
Is an electrode for connection, and a connection F. P. It is electrically connected to C21. 13c is also an electrode for connection, and is electrically connected to a lead wire 22 described later.

Reference numeral 14 is a photometric sensor unit, which is a main F.D. P. It is connected to the extension arm portion 13d of C13.
An external display unit 15 is fixed to the main body 1.

Reference numeral 16 is an upper lid which is one of the exterior members of the camera. Reference numeral 16a is a display window for viewing the external display 15 described above. Reference numeral 17 is a built-in strobe device, and 17a is a light emitting portion of the same strobe device. A strobe light emitting circuit is housed inside and is attached to the upper lid 16 in a retractable manner.

Reference numeral 18 denotes a connection terminal for attaching an external accessory, which is fixed to the upper lid 16. Reference numeral 19 is a release button for operating the above-mentioned release switch 3, and 20 is a mode dial for selecting various functions of the camera.

Further, 21 is a connection F.I. P. It is C and is electrically connected to the accessory connection terminal 18, the built-in flash device 17, and the mode dial 20. Reference numeral 21a is a mounting hole, and 21b is a connection terminal. 22 is a strobe device 1
A lead wire 22a for supplying power and the like to 7 and a connection terminal portion 22a. Reference numeral 23 is a front cover which is one of the exterior members.

Next, how the exterior parts are attached to the camera body will be described.

First, when the upper lid 16 is attached to the camera body, the upper lid 16 is put on the main body 1 from above, and is tightened and fixed by a screw or the like to complete the mechanical connection.
After that, the connection F. P. C21
The mounting hole 21a opened above is inserted into the positioning pin implanted in a part of the front plate 8. At this time, the main F. P. C
Connection terminal 13b provided on the connection F.
P. The connection terminal 21b provided on the C21 faces each other. In this state, the connection terminals 13b and 21b are soldered to establish an electrical connection. Similarly, the connection terminal 22a of the lead wire 22 extended from the upper lid in the same manner.
Is the main F. P. Electrical connection is made by soldering with the connection electrode 13c facing away from the C. This completes the connection of the upper lid 16 to the camera body body. After that, the front cover 23 is fixed to the body of the camera body by screwing. As the exterior member, the upper lid 16 and the front cover 23
Although not shown, a bottom cover, a grip that covers the battery chamber 1a, and the like are attached.

That is, since the connecting terminals 13b and 13c of the main FPC 13 are exposed in the state where the upper lid 16 is attached to the camera body 1, the connecting terminals 21b of the connecting FPC 21 after the upper lid 16 is attached to the main body 1.
The connection terminal 22a of the lead wire can be reliably and easily soldered to the connection terminals 13b and 13c of the main FPC 13.

FIG. 2 shows a second embodiment of the present invention. Reference numerals 16 to 20 are common to those in FIG.

In FIG. 2, reference numeral 24 is a connection F. P. C, accessory connection terminal 18, built-in flash device 1
7. It is electrically connected to the mode dial 20. Two
4a is a mounting hole, 24b is a connection terminal, and 24c is a bent back portion. Reference numeral 25 is a lead wire for supplying power or the like to the strobe device 17, 25a is a connection terminal, and 25b is a bent back portion.

When the upper lid unit constructed as described above is attached to the camera body, the upper lid 16 is first covered on the camera body as in the description of FIG. P. C24 and Main F.
P. C13, lead wire 25 and main F.S. P. C13 is electrically connected by soldering, but the connection F. P. C2
4, the lead wire 25 has a bent portion 24c,
Since 25b is provided, the upper lid can be opened even after the electrical connection by soldering within the length allowed when the bent and folded portions extend.
After soldering, the inside of the top cover can be repaired and adjusted.

[0026]

As described above, the connection between the electric circuit on the side of the exterior member such as the upper lid and the electric circuit on the side of the camera body is such that the exterior member is attached like the front portion of the camera body that sandwiches the camera mount. By adopting the connection structure that is performed at the portion exposed at, it is not necessary to fold the connection cable and store it in the invisible gap between the upper lid and the camera body. Further, since the disconnection accident of the connection cable or the like induced by this work is eliminated, both workability and reliability can be improved at the same time.

Further, a surplus portion of the connecting cable extended from the exterior member such as the upper lid is provided, for example, in a portion of the front surface of the camera body exposed from the upper lid, so that the upper lid is mechanically connected to the camera body main body. Since such attachment and fixing and the connection of the electric circuit can be performed completely independently, serviceability such as disassembly and repair after the completion of assembly can be significantly improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of an electric circuit connection structure for a camera of the present invention.

FIG. 2 is a perspective view showing a second embodiment.

[Explanation of symbols]

1 ... Camera body main body 2 ... Electronic dial unit 3 ... Release switch 8 ... Front plate 9 ... Camera mount 13 ... Main F
PC 21 ... Top FPC

Claims (5)

[Claims] 1. An electric circuit connection structure for a camera, wherein an electric circuit on the camera body main body side and an electric circuit on the exterior member side attached to the camera body main body are connected via a connecting portion. An electric circuit connection structure for a camera, wherein the portion is provided at a portion exposed when the exterior member is attached to the camera body. 2. The electric circuit connection structure for a camera according to claim 1, wherein the connection portion is provided on a front surface portion of the camera body main body sandwiching the camera mount. 3. The electric circuit connection structure for a camera according to claim 1, wherein the exterior member attached to the camera body is an upper lid. 4. The electric circuit connection structure for a camera according to claim 1, wherein the electric circuit on the exterior member side is connected to the electric circuit on the camera body main body side by a connection cable. 5. The connection cable according to claim 4, wherein the external cable on the side to which the electric circuit is connected is attached to the camera body body, and the connection cable has a surplus portion having a foldable length at the exposed portion of the camera body body. An electric circuit connection structure for a camera having.