JPH06289468A - Printed board mounting structure for camera - Google Patents

Abstract

PURPOSE:To improve mounting properties by arranging a flexible printed board electrically connecting flexible printed boards arranged along the top and bottom surfaces of a camera main body, along its rear surface. CONSTITUTION:Connecting board parts 5a and 5b connecting the top and bottom surface board parts 1 and 3, out of the flexible printed boards disposed on plural surface parts of the top and side surface parts, etc., one the camera main body 7 are arranged in the gap parts of the rear surface side of the camera main body 7. Moreover, the connecting board part 5a is disposed in a region not affecting a space where a mechanical part required at the time of loading a film cartridge 6 in a camera is arranged. Thus, the gap parts generated on the rear surface side of the camera main body 7 are effectively used, a large number of signal conductors are efficiently wired and the printed board mounting structure for the camera having excellent mounting properties on the camera main body is obtained with a simple constitution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board mounting structure for a camera, and more particularly to a printed circuit board mounting structure for a camera provided on a plurality of surfaces of a camera body.

[0002]

2. Description of the Related Art Conventionally, a flexible printed circuit board having flexibility has been used as a technique for mounting wiring of electric circuits and mounting electric parts in a camera, and a narrow space inside the camera has been effectively used. However, in recent years, the mounting scale of electric circuits has increased with the increasing sophistication of electronic functions and functions, and various switches, sensors, and the like have been distributed and arranged inside the camera. As a result, the flexible printed circuit board for wiring mounting must be sewn in a narrow space inside the camera, and the flexible printed circuit board has a complicated structure.

Further, the downsizing of cameras has rapidly progressed, and it has become difficult to secure a large space inside the camera, which makes it extremely difficult to design a flexible printed circuit board having a large mounting area on one plane. There is. In addition, the electric components are also dispersedly mounted on the flexible printed circuit board. As a result, the connection wiring between the surfaces of the flexible printed circuit board on which the electric components are mounted is complicated and sewn in a narrow space inside the camera. Has become.

Under such circumstances, various proposals have been made for the substrate structure of the flexible printed circuit board. For example, Japanese Patent Application Laid-Open No. 61-233726 discloses that.
In a camera in which electrical components are mounted on a camera body and a back cover, a technical means has been proposed for electrically connecting the electrical components to each other by an electric wire that communicates with a hinge shaft that connects the back cover and the camera body. There is.

Further, Japanese Utility Model Laid-Open No. 63-113135 discloses an electric circuit such as a control circuit element for controlling exposure and stroboscopic photographing based on output signals from the photometric sensor, the dimming sensor, or both sensors. There is disclosed a technical means in which an element is mounted on one flexible printed circuit board, and the flexible printed circuit board is continuously arranged on the upper surface of a pentaprism finder section, the side surface of a mirror box and the lower surface of a camera body in a camera. In the technical means, the flexible printed circuit boards are arranged so as to overlap with each other in at least one position in each of the above-mentioned parts.

[0006]

However, in the technical means disclosed in the above-mentioned Japanese Patent Laid-Open No. 61-233726, the wiring for connecting the electric parts mounted on the camera body and the back cover is connected to the above-mentioned wiring. Since the back cover and the camera body are communicated with each other in the hinge shaft, a large number of wirings cannot be arranged and the degree of freedom of the shape of the wiring portion is small. Furthermore, since the wiring portion is arranged in the movable portion, there is a high possibility of disconnection.

On the other hand, in the technical means disclosed in Japanese Utility Model Laid-Open No. 63-113135, the wiring portion for connecting a plurality of surface portions in the flexible printed circuit board is
Since it is performed on the surface portion other than the back surface portion of the camera body, the shape of the flexible printed circuit board is also complicated. Further, in the above-mentioned conventional example, it is difficult to arrange many flexible printed boards in the space on the back side of the camera body.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a printed circuit board mounting structure of a camera which is easily mounted on the camera body.

[0009]

To achieve the above object, a printed circuit board mounting structure of a camera according to the present invention comprises a first flexible printed circuit board arranged along an upper surface of a camera body, and a camera body. A second flexible printed circuit board arranged along the bottom surface of the camera, and a connecting flexible printed circuit board arranged along the rear surface of the camera body for electrically connecting the first and second flexible printed circuit boards. Is provided.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a printed circuit board mounting structure of a camera which is a first embodiment of the present invention. FIG. 1 shows a state in which the printed circuit board mounting structure of the camera of the first embodiment is applied to a single-lens reflex type camera.

As shown in FIG. 1, the printed circuit board mounting structure of the camera of the first embodiment is arranged along the upper surface of the camera body 7 including the upper surface of the pentaprism finder portion (not shown), and the electric parts are mounted. An upper surface substrate portion 1 of a flexible printed circuit board that is enabled, and an electric component formed by bending and extending from the upper surface substrate portion 1 toward one front side of the camera body 7 via a bending portion. A first front substrate part 2 which is arranged so as to be mountable, a lower face substrate part 3 of a flexible printed circuit board which is arranged so that electric parts can be mounted along the lower face part of the camera body 7, and the lower face A second front board portion 4 formed by bending and extending from the board portion 3 toward the other side front surface side of the camera body 7 via the bending portion, and arranged so that electrical components can be mounted thereon; Arranged on one side of the rear surface of the camera body 7, The first connection board portion 5a, which is integrally formed by communicating the top board portion 1 and the bottom board portion 3 and electrically connects the top board portion 1 and the bottom board portion 3, and the camera body 7 The upper surface substrate portion 1 is arranged on the rear surface side and the other side surface.
And a second connection substrate portion 5b that connects the lower surface substrate portion 3 to each other and is integrally formed, and electrically connects the upper surface substrate portion 1 and the lower surface substrate portion 3 to each other.

The above-mentioned top substrate portion 1, the first front substrate portion 2,
Each of the lower board portion 3, the second front board portion 4, the first connecting board portion 5a, and the second connecting board portion 5b is formed of a flexible printed board.

Further, in FIG. 1, reference numeral 6 is a film cartridge which is loaded into the camera body 7 from an unillustrated film lid opening provided on the back surface of the camera body 7 in the direction of the arrow in the figure. is there.

In the first embodiment, as shown in FIG. 1, of the flexible printed boards arranged on a plurality of surface portions of the camera body 7, the upper surface substrate portion 1 and the lower surface substrate portion 3 are connected. The first connection board portion 5a and the second connection board portion 5b are arranged in the space on the rear side of the camera body 7, and the space formed on the back side of the camera body 7 is effectively used. ing.

The first connection board portion 5a is arranged in a region that does not affect the space where the mechanical parts necessary for loading the film cartridge 6 into the camera are arranged.

FIG. 2 is a longitudinal sectional view of a main part of a camera to which the first embodiment is applied, and shows a cross section indicated by a chain line A in the drawing of FIG.

In FIG. 2, reference numerals 7a and 7b denote a cross section A.
Shows the upper and lower parts of the camera body 7 which are vertically divided into two by an aperture 7c, and the reference numeral 8 indicates the film rail surface formed on the camera body 7 on the rear side of the camera bodies 7a and 7b. The film is arranged so as to be movable along the film. Further, behind the film 8,
A film crimping plate 9 for crimping the film 8 to the film rail surface, and a back plate member 10 which is elastically held by the film crimping plate 9 and which is assembled with the camera body 7 at a portion not shown and is integrated. Is provided.
Further, a back cover member 12 formed integrally with the camera body 7 is provided on the rear side exterior portion of the camera body 7.

The first connection board portion 5a is arranged in the space between the back plate member 10 and the back cover member 12.
Although not shown in FIG. 2, the second connection board portion 5b is not shown.
Is similarly arranged in the space between the back plate member 10 and the back cover member 12.

According to the printed circuit board mounting structure of the camera of the first embodiment having such a configuration, the rear cover installation space, which is conventionally provided on the rear surface of the camera main body so as to be freely openable and closable, is provided. It can be effectively used as a wiring space for flexible printed circuit boards.
It is possible to simplify the shape of the wiring portion of the flexible printed circuit board, which tends to be complicated, and to provide a wiring structure of the flexible printed circuit board capable of wiring many signal lines.

Next, a second embodiment of the present invention will be described.

FIG. 3 is a perspective view showing a printed circuit board mounting structure of a camera which is a second embodiment of the present invention. Note that FIG. 3 shows a state in which the printed circuit board mounting structure of the camera of the second embodiment is applied to a single-lens reflex type camera, as in the first embodiment.

The second embodiment basically has the same structure as the first embodiment, but in the first embodiment, the first embodiment is used.
While both the connection board portion 5a and the second connection board portion 5b of FIG. 1 are integrally formed with the upper surface board portion 1 and the lower surface board portion 3, in the second embodiment, the connection board portion 5a The difference is that it is configured so as to be attachable to and detachable from the substrate portion or the bottom substrate portion.

As shown in FIG. 3, the printed circuit board mounting structure of the camera of the second embodiment is arranged along the upper surface of the camera body 7 including the upper surface of the pentaprism finder portion (not shown), and the electric parts are mounted. The upper surface substrate portion 13 of the flexible printed circuit board that is enabled, and the lower surface substrate portion 14 of the flexible printed circuit board that is also arranged along the lower surface portion of the camera body 7 so that electrical components can be mounted.
And a first front substrate formed by bending and extending from the lower substrate portion 14 toward the one side front surface side of the camera body 7 via the bending portion, and arranged so that electrical components can be mounted. Part 15a
And a second front surface that is also formed by bending and extending from the lower surface substrate portion 14 toward the other side front surface side of the camera body 7 via the bending portion, and is provided so that electrical components can be mounted. The board portion 15b and one rear side of the camera body 7 are detachably disposed between the upper surface board portion 13 and the lower surface board portion 14, and when mounted, the upper surface board portion 13 and the lower surface. First connection board portion 16a for electrically connecting to the board portion 14
Similarly, on the other side of the rear surface of the camera body 7, it is removably disposed between the upper surface substrate portion 13 and the lower surface substrate portion 14, and when mounted, the upper surface substrate portion 13 and the lower surface substrate portion 14 are attached. A second connection board portion 16b for electrically connecting and
A main part is composed of known connectors 17a to 17d for connecting the first connection board portion 16a or the second connection board portion 16b to the top board portion 13 or the bottom board portion 14.

Further, in FIG. 3, reference numeral 18 is a camera body 7.
A film cartridge loaded into the camera body 7 from an unillustrated film lid opening provided on one side thereof in the direction of the arrow in the figure.

As shown in FIG. 3, in the second embodiment, a connector 17 is used as a connecting flexible printed circuit board for connecting the upper surface substrate section 13 and the lower surface substrate section 14.
The first and second connection board portions 16a and 16b which are detachable by a to 17d are used. Both of the first and second connection board portions 16a and 16b are formed with connection contact portions at both ends, and both contact portions of the first connection board portion 16a are the top substrate portion 13 and Connectors 17a, 17 arranged at opposite positions on the lower substrate portion 14
It can be connected to and removed from c. Similarly, the second
Both contact portions of the connection board portion 16b can be removably connected to the connectors 17b and 17d arranged at the positions facing each other on the upper surface substrate portion 13 and the lower surface substrate portion 14, respectively.

The first and second connection board portions 16 are also provided.
Similar to the first embodiment, a and 16b are arranged in the space between the back plate member 10 and the back cover member 12 (see FIG. 2) on the rear surface side of the camera body.

According to the second embodiment having such a structure, as in the first embodiment, the space on the rear surface side of the camera body can be effectively utilized, and the connection for connecting the upper surface substrate portion and the lower surface substrate portion can be made. By forming the board portion separately, the shape of each flexible printed board can be downsized, which contributes to cost reduction and design flexibility.

Next, a third embodiment of the present invention will be described.

FIG. 4 is a perspective view showing the printed circuit board mounting structure of the camera of the third embodiment of the present invention. Note that FIG.
6A and 6B show a state where the printed circuit board mounting structure of the camera of the third embodiment is applied to a single-lens reflex type camera, as in the first and second embodiments.

As shown in FIG. 4, the printed circuit board mounting structure of the camera of the third embodiment is arranged along the upper surface of the camera body 7 including the upper surface of the pentaprism finder portion (not shown), and the electric parts are mounted. The upper surface substrate portion 19 of the flexible printed circuit board that is enabled, and the lower surface substrate portion 20 of the flexible printed circuit board that is also arranged along the lower surface portion of the camera body 7 so that electrical components can be mounted.
And a first front substrate formed by bending and extending from the lower substrate portion 20 toward one front surface side of the camera body 7 through the bending portion, and arranged so that electrical components can be mounted. Part 21a
Similarly, a second front surface is formed by bending and extending from the lower substrate portion 20 toward the other side front surface side of the camera body 7 through a bending portion, and is provided so that an electric component can be mounted. The substrate portion 21b and the rear side of the camera body 7 are formed to extend from the lower substrate portion 20 via a bent portion,
A connection board portion 23 that is removably disposed at the tip end portion of the connection board portion 23 and that is electrically connected to the top surface board portion 19 when attached, and the connection board portion 23.
A known connector 24 for connecting the
, A date module substrate 22 disposed in the central portion on the rear surface side of the camera body 7, and a connection contact portion 2 for connecting one side portion of the connection substrate portion 23 and the date module substrate 22.
5 and 5 form a main part.

On the date module substrate 22, electric parts, for example, electric parts constituting a date module circuit can be mounted, and are arranged in the space on the rear surface side of the camera body 7.

The connection board portion 23 is arranged in a space on one side of the rear surface of the camera body 7, and a protruding board portion is formed from the middle of the board toward the center of the camera body. The protruding substrate portion is arranged so as to overlap with one end of the date module substrate 22. Electrical contact portions (not shown) are formed on the facing surfaces of the overlapping portions of the connection substrate portion 23 and the date module substrate 22, respectively, and the connection contact portions 25 are crimped and electrically connected.

In the figure, reference numeral 26 is a film cartridge which is loaded in the camera body 7 in the direction of the arrow from the film lid opening formed from one side of the camera body (not shown) to the rear surface.

In the third embodiment, as shown in FIG.
Signal lines are led from the lower substrate portion 20 to each substrate arranged along a plurality of surfaces of the camera body 7.

According to the third embodiment having such a configuration, in addition to the same effects as the first embodiment, the camera body 7
By arranging the wiring part of the flexible printed circuit board that is wired so that signals can be transmitted to a plurality of substrates in the space on the rear surface side, it is possible to eliminate unnecessary wiring space of the flexible printed circuit board and simplify the board configuration. Can be realized.

In each of the above-described embodiments, at least one of the connecting flexible printed circuit boards for connecting the plurality of flexible printed circuit boards arranged along the plurality of surface portions of the camera body including the upper surface of the pentaprism finder section,
It is arranged in a space on the rear surface side of the camera body, and the space is effectively used as a wiring space for the flexible printed circuit board. Therefore, it is possible to provide a printed circuit board mounting structure for a camera, which has a simple configuration in which many signal lines are wired without waste and which has a good mountability to the camera body.

Further, in the first and second embodiments, the flexible printed circuit boards arranged along the plurality of surface portions of the camera body 7 so that the electric parts can be mounted are the single-sided flexible printed circuit boards which are already known. Any of a double-sided flexible printed circuit board, a multi-layered flexible printed circuit board, etc. may be used, and similarly various flexible printed circuit boards may be used for connection.

In addition to the above-mentioned means, the connecting means for connecting the above-mentioned upper-side substrate portion or the lower-side substrate portion to the connection substrate portion is
It may be connected by soldering or the like, and it is also possible to mount an electric component on the connection board portion.

On the other hand, it goes without saying that the shape of each flexible printed circuit board shown in each of the above embodiments may have a more complicated shape.

The printed circuit board mounting structure of the camera of the present invention is not limited to the flexible printed circuit board, and any printed circuit board can be applied as long as it can be mounted in the camera body.

Furthermore, the printed circuit board mounting structure of the camera of the present invention is more suitable for a camera of the type in which the film cartridge is loaded into the camera body from the direction shown by the arrow in FIG. Although effective, it goes without saying that the printed circuit board mounting structure of the camera of the present invention can be applied to a camera in which the film loading is not such a system.

[0043]

As described above, according to the present invention, it is possible to provide a printed circuit board mounting structure of a camera which is easily mounted on the camera body.

[Brief description of drawings]

FIG. 1 is a perspective view showing a printed circuit board mounting structure of a camera that is a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of an essential part of a portion indicated by a chain line A in FIG. 1 of the camera to which the first embodiment is applied.

FIG. 3 is a perspective view showing a printed circuit board mounting structure of a camera which is a second embodiment of the present invention.

FIG. 4 is a perspective view showing a printed circuit board mounting structure of a camera which is a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Top board part 2 ... 1st front board part 3 ... Bottom board part 4 ... 2nd front board part 5a ... 1st connection board part 5b ... 2nd connection board part 6 ... Film patrone 7 ... Camera main body

Claims (1)

[Claims] 1. A first device arranged along an upper surface of a camera body.
Flexible printed circuit board, a second flexible printed circuit board arranged along the bottom surface of the camera body, and a second flexible printed circuit board arranged along the rear surface of the camera body, and electrically between the first and second flexible printed circuit boards. A flexible printed circuit board for connection to be connected, and a printed circuit board mounting structure for a camera, comprising: