JPH07225419A - Camera - Google Patents

Abstract

PURPOSE:To mount electrical parts with a high density on a package board in which an FPC board is installed and to make a camera small in size and high in performance by the enlargement of the scale of an electrical circuit. CONSTITUTION:A first camera structure member 5 and a second camera structure member having a sidewall parts 2a facing the external wall 5a of the first camera structure member 5 are provided. The package board 10 of a both-side mount type having a first part being in proximity to the sidewall part and facing it and a second part extended up to a position not facing the sidewall part is used. A vertical electrical connector 11 is mounted on the second parts. A thick first electrical part is mounted on the surface opposite to a connector mounting surface on the package board. The FPC board 12 connected to a horizontal connector and disposed on the connector mounting surface is provided. Further, the FPC board 12 is disposed so as to extend up to the surface opposite to the connector mounting surface via the edge part 10c of the package board. On the extended opposite surface, a thick second electrical part is mounted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera in which a flexible printed circuit board or the like for electrically connecting electrical components and the like in the camera is incorporated and arranged, and in particular, an arrangement structure of the flexible printed circuit board is improved. About the camera.

[0002]

2. Description of the Related Art Conventionally, in this type of camera, a void space portion sandwiched between appropriate camera components is
A mounting board that constitutes an electric control circuit and the like is provided.
Then, various electric parts are mounted on the board surface of such a mounting board, and a flexible printed board (hereinafter referred to as an FPC board) which is a connecting means with various electric parts in the camera is electrically connected. A connector for electrical connection for electrically connecting is also provided.

By the way, in a conventional camera, it is considered to use a double-sided mounting board as the above-mentioned mounting board. In such a double-sided mounting board, electrical components are mounted on the board surface on one side, and an electrical connector is arranged on the board surface on the opposite side. Consideration is given to the ease of incorporation into the void area with the space.

That is, when an attempt is made to lay out such a double-sided mounting board in an area having a limited space in the thickness direction in the camera, the electrical connection connector and the FPC board become peripheral members. The connector mounting surface of this substrate is brought close to the peripheral members at a level where it does not interfere in the thickness direction, and a space in the thickness direction is secured as much as possible on the electric component mounting surface side. By doing so, the mounting efficiency has been improved by, for example, mounting an IC or the like having a relatively large thickness on the double-sided mounting substrate.

FIG. 5 shows a state in which a double-sided mounting board is incorporated in a conventional camera, and is a cross-sectional view showing one side of the camera in a partially enlarged manner. In the figure, the camera body, generally designated by reference numeral 1, includes a cartridge chamber 2 as a film chamber in which a well-known film cartridge F is loaded, and an aperture portion 3 through which a film drawn or drawn from the cartridge chamber 2 runs. I have it.

Reference numeral 4 denotes a well-known shutter unit arranged on the front side of the aperture portion 3 as shown by an imaginary line in the figure.
Reference numeral 5 denotes a dark box member which is a structural member disposed on the front surface side of the dark box member 5 so as to surround a shooting optical path from a shooting lens to a film. It is formed as an outer wall 5a.

Reference numeral 6 denotes a front body provided on the front side of the main body 1 so as to cover the dark box member 5 and the like by a joint portion 1a, and on the back side of the main body 1, as is well known, a camera back cover. (Not shown) and the like are arranged. Reference numeral 7 in the figure denotes a film rewinding fork that faces the inside of the cartridge chamber 2 and engages with the cartridge shaft of the film cartridge F loaded in the chamber 2 to rewind the film.

Reference numeral 2a in the drawing denotes a side flat surface portion of an outer wall forming the cartridge chamber 2, which is arranged so as to face the flat outer wall 5a of the dark box member 5 and is located between the outer wall 5a side of the dark box member 5 between them. Is provided with a double-sided mounting substrate 10 on which a control circuit unit for driving and controlling various electric components in the camera is mounted.

The first mounting surface 1 of this mounting substrate 10
A horizontal type electrical connecting connector 11 is mounted on the connector 0a, and an FPC board 12 which is a connecting means from various electric parts in the camera is connected to the connector 11a. In addition, reference numeral 13 in the drawing denotes an electric component mounted on the FPC board 12 and having a small thickness.

A first electric component 14, such as an IC, is mounted on the second mounting surface 10b on the opposite side (dark box member 5 side) of the mounting board 10.

[0011]

By the way, in the conventional camera mounting structure as described above, an electric component (first electric component 14) having a relatively large thickness is mounted on one surface,
A double-sided mounting board 10 having an electrical connection connector 11 for connecting an FPC board 12 on the opposite side is formed by an outer wall 5a of a dark box member 5 and a side flat surface portion 2a of an outer wall of a cartridge chamber 2. When laying out in a limited space in the thickness direction, the second mounting surface 10 on which the relatively thick first electric component 14 is mounted is mounted.
In order to avoid interference with the outer wall 5a of the dark box member 5, it was necessary to secure a large space in the thickness direction on the side of b.

On the other hand, the double-sided mounting board 10 described above.
In the above, on the side of the mounting surface (first mounting surface 10a) of the electrical connection connector 11, it is possible to secure a space in the thickness direction such that the FPC board 12 arranged along the mounting surface can be reliably arranged. It was necessary.

In consideration of the above-mentioned conditions and the like, the double-sided mounting board 10 is installed in a desired built-in space in the camera, for example, the outer wall 5a of the dark box member 5 and the side flat surface portion 2a of the outer wall of the cartridge chamber 2. It has been conventionally practiced to assemble and arrange in a gap space portion between them, but in this case, the following problems occur.

That is, in the above-mentioned conventional mounting structure, the FPC board 1 connected to the electrical connector 11 mounted on the first mounting surface 10a of the mounting board 10.
It is impossible to mount a thick electric component on the No. 2 due to the space limitation in the thickness direction of the built-in portion in the camera as described above. Only the electric component 13 having no thickness is mounted in consideration of the thickness of the assembling space.

Therefore, in such a conventional structure, the advantage of using the double-sided mounting board 10 and the electrical connection connector 11 for connecting the FPC board 12, that is, the mounting board 10 and the FPC board 12 are high. There is a problem that it hinders high-density mounting.

The present invention has been made in view of the above problems, and does not limit the thickness of the electrical components mounted on the mounting board and the FPC board connected to the electrical connection connector mounted on the mounting board. It is an object of the present invention to obtain a camera that can be properly mounted on an FPC board without increasing the size of the entire camera by obtaining an arrangement and a mounting structure suitable for high-density mounting.

[0017]

In order to meet such a demand, a camera according to the present invention includes a first camera structural member such as a dark box member having a substantially flat outer wall, and the first camera structural member.
A second camera structural member such as a film chamber outer wall having a side wall facing a part of the outer wall of the camera structural member, and a first portion closely facing the side wall of the second camera structural member. Double-sided mounting board having a second part extending to a position not facing the side wall, a horizontal electrical connector mounted on the second part of the mounting board, and this mounting A thick first electrical component mounted on the surface of the board opposite to the mounting surface of the horizontal electrical connection connector, and a connector mounted on the mounting board that is connected to the horizontal electrical connection connector And an FPC board disposed along the surface of the FPC board, the FPC board extending to the surface opposite to the connector mounting surface via the mounting board end edge portion, and On the opposite side of this extension, a thick second It is obtained by configured to mount electrical components.

Further, the camera according to the present invention is such that an electric component having no thickness is mounted on the board surface of the FPC board arranged along the connector mounting surface of the mounting board.

[0019]

According to the present invention, a double-sided mounting board provided between the outer wall and the side wall of the first and second structural members in the camera and an FPC board attached to the double mounting board are Enables mounting without restricting the thickness of the electrical components mounted on the FPC board, which allows the mounting board and the FP to be mounted.
Improve the efficiency of mounting on the C board.

[0020]

1 to 3 show an embodiment of a camera according to the present invention. In these figures, the same or corresponding parts as those in FIG. The description is omitted.

Here, in FIG. 1, reference numeral 16 is a quick return mirror provided in the first camera structural member, so-called dark box member 5, for guiding light to the finder optical system, as is well known. It is sometimes operated so as to retract from the optical path to the film and return to the original position after shooting. Reference numeral 16a denotes a rotary bearing portion of the quick return mirror 16, and a shaft rotatably supported by the dark box member 5 is rotatably fitted to the bearing portion 16a.

Further, reference numeral 17 in FIG. 1 denotes a pentaprism forming a finder optical system which is a well-known optical component provided at the upper end of the camera.

According to the present invention, the camera having the above-mentioned structure is characterized in that the following structure is adopted as apparent from FIGS.

That is, according to the present invention, a double-sided mounting substrate 10 is provided on the outer wall 5a of the dark box member 5 and the dark box member 5 as the first camera structural member having the outer wall 5a having a substantially planar shape. A required thickness formed between the outer wall having side flat portions 2a as parallel side walls facing each other in parallel and a film chamber 2 serving as a film chamber serving as a second camera structural member is formed. It is arranged in the gap space.

Here, the double-sided mounting board 10 has a first mounting surface 10a facing in parallel to the side flat surface portion 2a on the outer wall of the cartridge chamber 2, and the first mounting surface 10a. 10a is composed of a first portion that closely faces the side flat surface portion 2a and a second portion that extends to a portion that is distant from the side flat surface portion 2a. Further, on the second mounting surface 10b of the mounting board 10 opposite to the first mounting surface 10a, a thick first electric component 14 such as an IC is mounted.

Further, a horizontal type electrical connection connector 11 is disposed on the second portion of the first mounting surface 10a of the mounting board 10, and the FPC board 12 is provided on the horizontal type connector 11. Are connected by the connection end 12a, and the surface portion 12b thereof is arranged along the first mounting surface 10a.

In this structure, according to the present invention, the FPC board 12 is extended to the surface (second mounting surface) 10b opposite to the first mounting surface 10a on which the connector 11 is mounted. The second electric component 18 having a certain thickness is mounted on the extended portion 12c, which is the extended surface portion on the opposite side.

Here, the FPC board 12 has the first mounting surface in a thickness space sandwiched between the outer wall side flat surface portion 2a of the cartridge chamber 2 and the first mounting surface 10a of the mounting board 10. An extension portion 12e for connecting to an electric circuit, which has a surface portion 12b extending along 10a, and which is not shown along the end edge portion 10c of the mounting board 10, as well as an edge portion of the mounting board 10. A bent portion 12d continuous with the extension portion 12c on the opposite side, which is bent along the line 10c and folded back.
Is equipped with.

Then, on the opposite side extended portion 12c which is continuously formed through such a bent portion 12d and is extended along the second mounting surface 10b of the mounting substrate 10,
A second electric component 14 having a thickness that can be interposed in a thickness space sandwiched between the dark box member 5 and the outer wall 5a is mounted.

The surface portion 12b of the FPC board 12 is provided with a third small-electricity having a size in consideration of a thickness space sandwiched between the surface portion 12b and the side flat surface portion 2a of the outer wall of the cartridge chamber. The component 13 is mounted.

Further, 10d in FIGS. 1 and 3 described above.
Is a hole provided in the mounting board 10. The hole 10d
Is for fixing the mounting board 10 to the outer wall of the dark box member 5 by fixing means such as fixing screws (not shown).

In such a structure, the first mounting surface 1
In the cartridge chamber 2, the double-sided mounting board 10 in which the electrical connection connector 11 is mounted in an electrically connected state at 0a and the thick first electric component 14 is mounted on the second mounting surface 10b is installed. When laying out and arranging in the space in the limited thickness direction formed by the side flat surface portion 2a on the outer wall and the dark box member outer wall 5a which is the camera structural member, mounting of the first electric component 14 is performed. Second side, which is the surface side
To secure a space in the thickness direction on the mounting surface 10b side.

This is because there is a sufficient space in the thickness direction on the side of the second mounting surface 10b, so that the restriction on the thickness dimension of the electric component that can be mounted is relaxed, and the electric connection connector is used. If the surface portion 12b of the FPC board 12 connected to 11 can be located along the side, there is no obstacle in the space in the thickness direction.

Here, in such a structure, the mounting board 10 in which the mounting surface of the electric component 14 and the mounting surface of the horizontal electrical connection connector 11 are the same surface is not premised on the horizontal connector 11. FPC board 12 to be connected
Is arranged along the horizontal direction of the mounting board 10, there is a problem that the electric components themselves interfere with each other.
A technique in which it is necessary to separate the connector and the electric component in advance due to the wiring pattern above, and it is desirable to dispose them on both sides as described above in order to realize high-density mounting. This is because there is a background.

In particular, in this embodiment, the FPC board 1
On the second surface portion 12b, only electric components having a thin thickness such as the third electric component 13 can be mounted, but FP
The C substrate 12 is folded back through the bent portion 12d along the edge portion 10c of the mounting substrate 10, and the outer wall 5a of the dark box member 5 is folded.
In the thickness space sandwiched between the second mounting surface 10b and the second mounting surface 10b, an extension 12c extended along the second mounting surface 10b is provided, and on the extension 12c,
It is configured to mount the second electric component 18.

According to this structure, the extension portion 12c of the FPC board 12 arranged along the second mounting surface 10b side is provided with the FPC board 12 on the first mounting surface 10a side. An electric component having a thickness exceeding the thickness limit that can be mounted on the surface portion 12b, that is, the second electric component 18 can be mounted.

More specifically, the extension 12c has a first
Surface part 1 of the FPC board 12 along the mounting surface 10a of the
2, and a gap in the thickness direction of the surface portion 12b of the FPC board 12, which is formed by the side flat portion 2a of the exterior wall of the cartridge.
Alternatively, from one of the gaps in the thickness direction of the surface portion 12b of the FPC board 12 formed by the surface portion 12b of the FPC board 12 arranged along the first mounting surface 10a and the first mounting surface 10a. It is possible to mount the second electric component 18 having a large dimension in the thickness direction.

Therefore, according to the present invention, it is possible to mount without restricting the thickness of the electric components mounted on the FPC board 12 provided in the camera, and the mounting board 10 and the FP are mounted.
The efficiency of the mounting on the C substrate 12 can be improved, the high efficiency of the mounting can be realized, and the miniaturization of the camera and the high performance due to the scale expansion of the electric circuit can be realized. .

FIG. 4 shows another embodiment of the present invention. In these figures, the same or corresponding parts as those in FIGS. 1 to 3 and FIG. To do.

In this embodiment, the film winding spool 2 is used instead of the cartridge chamber 2 side as in the above-mentioned embodiments.
A mounting substrate 10 disposed between a side flat surface portion 21a of an outer wall of a spool chamber 21 as a film chamber having 0 and the other flat outer wall 5b of a dark box member 5 which is a structural member. This is a case where the present invention is applied to the horizontal type electrical connection connector 11 mounted thereon and the FPC board 11 connected thereto.

Also with this structure, the flat outer wall 5 of the dark box member 5 is formed as in the above-described embodiment.
The horizontal type electrical connection connector 11 and the mounting substrate 1 connected to the horizontal type connection connector 11 are used by utilizing the minimum necessary thickness space between the side wall surface b of the spool chamber 21 and the side flat surface portion 21a of the spool chamber 21.
An extension portion 12c which is provided by folding back the edge portion 10c of 0
It will be easily understood that the FPC board 12 having the mounting board 10 enables efficient mounting on the mounting board 10 and further on the FPC board 12.

The present invention is not limited to the structure of the embodiment described above, and it is needless to say that the shapes and structures of the respective parts of the camera can be appropriately modified and changed, and various modifications can be considered.

For example, in the above-described embodiment, the dark box member 5
The space portion formed between the outer walls 5a and 5b of the cartridge, the cartridge chamber 2 as the film chamber, and the outer wall side flat surface portions 2a and 21a of the spool chamber 21 is used as a mounting space for the mounting substrate 10 and the FPC substrate 12. However, the present invention is not limited to this. For example, various constituent members in the camera, such as the body of the camera, the front body, various components, component assemblies, appearance members, electrical components, If it is a thickness space sandwiched by structural members in a broad sense such as an electric substrate, it can be widely applied and the effect can be exhibited.

Further, in the above-described embodiment, the mounting board 1
0 through the side edge portion 10c on the rear end side of the camera
The substrate 12 is folded back so that one surface 10a is turned to the other surface 1
Although the case where it is installed alongside 0b has been described, it goes without saying that it is not limited to the side edge portion on the rear side of the body.

In the above-described embodiment, the mounting location of the second electric component 18 may be either the front surface or the back surface of the FPC board 12 as long as it is the extension portion 12c.

Further, in the above-described embodiment, the periphery of the mounting portion of the mounting substrate 10 provided with the FPC board 12 is surrounded by the side walls 2a, 2 of the cartridge chamber outer wall and the spool chamber outer wall.
1a, the outer wall 5a, 5b of the dark box member 5 and the like, the outer wall of the structural member in a broad sense has a planar shape, but if the double-sided mounting board 10 has a space in the thickness direction in which it can be laid out. Well, regardless of plane, curved surface, slope,
Needless to say, the present invention can be applied to a surface having various shapes such as a step surface.

[0047]

As described above, according to the camera of the present invention, the first camera structural member, the second camera structural member having the side wall portion facing a part of the outer wall thereof, and the side wall portion thereof. Mounted on a second portion of the mounting board, and a double-sided mounting board having a first portion facing closely to the side wall and a second portion extending to a position not facing the side wall portion. A horizontal type electrical connector, a first electrical component mounted on the surface of the mounting board opposite to the connector mounting surface, and along the connector mounting surface of the mounting board connected to the connector. An FPC board to be disposed, the FPC board being extended to the surface opposite to the connector mounting surface through the mounting board end edge portion, and the FPC board on the opposite side. Since the second electrical component is mounted on the surface, Despite being simple and inexpensive construction, excellent effects as follows.

That is, according to the present invention, since it is possible to mount without restricting the thickness of the electric components mounted on the FPC board arranged in the camera, it is possible to realize high-density mounting by improving the mounting efficiency. It is realized, and there is an advantage that high performance can be realized by downsizing the camera and expanding the scale of the electric circuit.

In particular, according to the present invention, a thick first electric component is mounted on the surface of the mounting substrate opposite to the connector mounting surface, and F is arranged along this surface.
By mounting the thick second electric component also on the extension portion of the PC board, the mounting efficiency can be improved and high-density mounting can be further realized.

Further, according to the camera of the present invention, by mounting an electric component having no thickness on the board surface of the FPC board arranged along the connector mounting surface of the mounting board,
It is possible to further exert the advantages described above.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a camera according to the present invention and partially showing one side portion including some components inside the camera.

FIG. 2 is a partially enlarged cross-sectional view showing only one side of the camera, showing an embodiment of the camera according to the present invention.

FIG. 3 is a schematic perspective view showing an embodiment of a camera according to the present invention and showing a relationship between a double-sided mounting board as an essential part and an FPC board.

FIG. 4 is a partially enlarged cross-sectional view showing only one side of a camera according to another embodiment of the camera of the present invention.

FIG. 5 is a transverse sectional view showing an example of a conventional camera, in which only one side of the camera in which a cartridge chamber is provided is partially enlarged.

[Explanation of symbols]

1 Main Body 1a Joint with Front Body 2 Patrone Chamber (Film Chamber; Second Camera Structural Member) 2a Side Plane Part of Outer Wall 3 Aperture Part 5 Dark Box Member (First Camera Structural Member) 5a Flat Outer Wall 5b Flat outer wall 6 Front body 10 Double-sided mounting board 10a First mounting surface 10b Second mounting surface 10c End edge portion 11 Horizontal electrical connection connector 12 Flexible printed circuit board (FPC board) 12a Connection end 12b Surface portion 12c extension part 12d bent part 12e extension part 13 electric part (third electric part) 14 first electric part 16 quick return mirror 18 second electric part 20 film winding spool 21 spool chamber (film chamber; second Camera structural member) 21a Side surface flat portion of outer wall F Film patrone

Claims (5)

[Claims] 1. A first camera structural member, a second camera structural member having a side wall portion facing a part of an outer wall of the first camera structural member, and a side wall portion of the second camera structural member. A double-sided mounting type mounting board having a first portion facing closely to the side wall and a second portion extending to a position not facing the side wall portion, and mounted on the second portion of the mounting board. A horizontal electrical connector, a first electrical component mounted on a surface of the mounting board opposite to a mounting surface of the horizontal electrical connector, and the horizontal electrical connector. A flexible printed circuit board connected to the connection connector and arranged along the connector mounting surface of the mounting circuit board, wherein the flexible printed circuit board mounts the connector through an edge portion of the mounting circuit board. Opposite to face A camera characterized in that the camera is arranged so as to extend to the side surface, and the second electric component is mounted on the opposite surface that has been extended. 2. The camera according to claim 1, wherein the first camera structural member is a side outer wall of a dark box member arranged in the camera. 3. The camera according to claim 1 or 2, wherein the second camera structural member is an outer wall of either a cartridge chamber or a spool chamber forming a film chamber. 4. The camera according to claim 1, wherein thick electric components are used as the first and second electric components. 5. The camera according to claim 1 or 4, wherein an electric component having no thickness is mounted on the board surface of the flexible printed board arranged along the connector mounting surface of the mounting board. A camera to do.