JPH112860A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera which can be easily assembled, and whose cost can be lowered by reducing parts to be used. SOLUTION: Screw holes 82 and 83 screwed to screws 55 and 56 being engaging members for integrally combining flexible boards 57 and 58 and a control circuit board 26 constituting an upper unit with a holding member 25 are respectively integrally provided on both ends of the member 25. Annular grooves 84 and 85 are respectively provided so as to surround the periphery of the holes 82 and 83. Rubber rings 59 and 60 are embedded in the grooves 84 and 85.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly, to an improvement in a camera for cost reduction.

[0002]

2. Description of the Related Art In order to achieve cost reduction and miniaturization, a low-priced, highly portable compact camera is designed to reduce the number of parts and assembly costs by unitizing the components into functions and reduce the internal space. Is used effectively. For example, components requiring high mounting accuracy, such as a distance measuring / photometric element and a finder lens, are mounted on a block-shaped finder holding member. Further, for example, a control circuit for electrically controlling each part of the camera is formed integrally on a control circuit board. Circuits for controlling the magnetic write head, the optical read sensor, and the like are assembled together on a flexible substrate.

[0003] The finder holding member, the control circuit board, and the flexible board are integrally connected by an engaging member, and are mounted above the aperture of the camera as a board unit. In such a board unit, conventionally, as shown in FIG. 4, a control circuit board 92 is overlaid on a finder holding member 91, and a mounting portion 94 of a flexible board 93 is further overlaid on the control circuit board 92. , Screws and the like.

[0004] At this time, the connection pattern provided on the lower surface of the mounting portion 94 of the flexible substrate 93 and the circuit pattern provided on the upper surface of the control circuit board are pressed against each other and electrically connected to each other. A rubber ring 95 is provided on the upper surface side of the mounting portion, and a pressing ring 96 that holds the rubber ring 95 and presses it from above is covered, and a screw 97 integrally connects the pressing ring 96 to the finder holding member 91. Join. Thereby, the connection pattern of the flexible board 93 and the circuit pattern of the control circuit board 92 are securely pressed against each other by the elasticity of the rubber ring 95, and are electrically connected securely.

[0005]

However, overlapping the pressing ring on the rubber ring and screwing it in order to hold the rubber ring requires time and labor for assembling, increases the number of parts used, and reduces the cost of the camera. Had become an obstacle.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a camera which can be easily assembled and whose cost can be reduced by reducing the number of parts used.

[0007]

In order to solve the above problems, according to the first aspect of the present invention, a mounting base and first and second substrates integrally engaged with the mounting base are provided. In the camera in which the upper unit is provided above,
An annular groove is provided on the periphery of a portion where the engaging member engages with the mounting base, and a rubber ring having a thickness greater than the depth of the annular groove is embedded in the annular groove. The first substrate is superimposed on the mounting base so that the portions are in contact with each other, and the second substrate is further superimposed on the first substrate, and the first and second substrates are integrated on the mounting base. The first substrate is sandwiched between the mounting base and the second substrate by being connected to the base.

According to a second aspect of the present invention, the mounting base is a holding member for holding at least a finder lens. In a third aspect, the first substrate is a thin flexible substrate that is partially bendable. According to a fourth aspect of the present invention, the second substrate is a control circuit board on which a control circuit for electrically controlling each part of the camera is formed.

[0009]

FIG. 2 is a perspective view showing the appearance of a camera embodying the present invention. The camera 2 has an IX240 in which a photo film is stored in a plastic cartridge.
This is a compact camera that uses a type film cartridge. The camera 2 includes a front exterior plate 4 for front and rear sides of a camera body 3 (see FIG. 1) in which a film cartridge is loaded and various photographing mechanisms are assembled.
a and a rear exterior plate 4b.

On the upper surface of the camera 2, there is provided a shutter button 6 which is half-pressed during focusing and deeply pressed during shutter release. On the front of the camera 2, a lens barrel 7, a projection window 8 and a light receiving window 9 for distance measurement, a light receiving window 10 for photometry, an object side finder window 11, a red eye reduction lamp window 12, a strobe light emission, and the like. A part 13 and the like are provided. Although not shown, an eyepiece side finder window, a liquid crystal panel on which various photographing information is displayed, a zoom lever for performing a magnification operation of a lens barrel 7 as a zoom lens, and a film cartridge are loaded and unloaded on the back of the camera 2. A back cover or the like is provided to perform the operation.

FIG. 3 is an exploded perspective view showing the structure of the camera 2. Although not shown in detail, the camera body 3 has a cartridge chamber 15 in which a film cartridge is loaded and a photograph sent out from the film cartridge loaded in the cartridge chamber 15 with a lens barrel 7 attached to the center of the front face therebetween. A film roll chamber 16 into which the film is wound.

A take-up shaft for taking up a photographic film is rotatably arranged in the film roll chamber 16, and a motor serving as a drive source for feeding the film is provided inside the take-up shaft. Is incorporated. A drive shaft 18 that engages with a spool of the film cartridge and rotates in a film feeding direction and a rewinding direction, and a gear 1 that rotates the drive shaft 18 is provided above the cartridge chamber 15.
A gear train 22, 9, 20, 21 is rotatably mounted. The gear train 22 is connected to a motor via a rotating shaft 23 coaxially mounted on the gear 21 and a gear train (not shown) incorporated at the bottom of the camera body 3.

On the upper part of the camera body 3, a holding member 25,
An upper unit 81 in which the flexible boards 57 and 58 and the control circuit board 26 are integrally connected is attached. A holding member 25 serving as a mounting base holds an element for distance measurement and light measurement and a finder optical system, and also supports the gear train 22 mounted on the upper part of the cartridge chamber 15. The holding member 25 is roughly divided into an AF / finder holding portion 28 which is a finder substrate to which various elements and a finder optical system are attached, and a gear supporting portion 29 which is a gear supporting plate for supporting the gear train 22. Become.

The AF / finder holding unit 28 has a block shape, and a light receiving lens 31 for distance measurement is provided on the front surface thereof.
A light-receiving element 32 and a stop member 33 for photometry, and a mounting opening 35 in which a red-eye reduction lamp 34 is mounted.
36 and 37 are formed. A light-tight cylindrical portion 38 is integrally formed behind the mounting opening 35 where the light receiving lens 31 is mounted, and a light receiving element 39 for distance measurement is mounted behind the cylindrical portion 38.

On the side of the mounting opening 36 of the light receiving element 32, a cylindrical portion 42 for mounting an objective lens unit 41 constituting a finder optical system is formed.
An opening 43 for the objective lens unit 41 is formed on the front surface of the cylindrical portion 42, and a prism 44 constituting a finder optical system is mounted on the rear end. On the side of the cylindrical portion 42, a cylindrical portion 47 to which a light emitting element 45 for distance measurement and a light emitting lens 46 are attached is formed.

The AF / finder holder 28 is assembled on the upper part of the camera body 3 and receives the light receiving lens 3 for distance measurement.
1, a light receiving element 32 for photometry, a red-eye reduction lamp 34, an objective lens unit 41, and a projection lens 46 for distance measurement include a light-receiving window 9 for distance measurement, a light-receiving window 10 for photometry, and a lamp window for red-eye reduction. 12, objective-side finder window 11, light-emitting window 8 for distance measurement
Be placed behind.

The gear support 29 has a plate shape.
It is integrally formed so as to protrude from the side of the cylindrical portion 38 of the F / finder holding portion 28 to which the light receiving lens 31 for distance measurement is attached. On an upper surface of the gear support portion 29, a zoom lever 49 used for zooming operation of the lens barrel 7 as a zoom lens is assembled. The zoom lever 49 is attached to a pin 50 erected on the upper surface of the gear support plate 29, and is swingable between a telephoto position and a wide-angle position sandwiching the neutral position. Also, this zoom lever 49
An elastic piece 51 for returning the zoom lever 49 rocked between the telephoto position and the wide-angle position to the neutral position is integrally formed.

On the upper surface of the zoom lever 49, a metal contact piece 53 for a zoom switch is mounted.
The metal contact piece 53 comes into contact with the control circuit board 26 attached to the upper part of the holding member 25, and when the zoom lever 49 is swung, swings together and contacts the conductive surface of the control circuit board 26, Turns the zoom switch on and off.

The holding member 25 has a positioning hole 62 formed on the side of the cylindrical portion 47 of the AF / finder holding portion 28,
Positioning is performed by inserting pins 64 and 65 formed on the upper surface of the camera body 3 into positioning holes 63 formed in the gear support portion 29. The holding member 25 positioned by the positioning holes 62 and 63 and the positioning pins 64 and 65 is a hole 67 formed on the side of the positioning hole 62.
And holes 68, 69, 70 formed in the gear support 29.
Is fixed to the upper portion of the camera body 3 by the fixing portion including the screw 71.

At both ends of the holding member 25, screws 55, 56 serving as engaging members for integrally connecting the flexible boards 57, 58 and the control circuit board 26 constituting the upper unit 81 to the holding member 25. Screw hole 8 screwed into
2 and 83 are provided integrally. Then, annular grooves 84 and 85 are formed so as to surround the screw holes 82 and 83.
Are respectively provided. Rubber rings 59, 60 are embedded in the annular grooves 84, 85.

On the upper portion of the holding member 25, a first
The mounting portions 57a and 58a of the two flexible substrates 57 and 58 are sandwiched between the control circuit board 26 and the mounting portions 57a and 58a. One flexible substrate 57 is for connecting the control circuit board 26 with a bar code reader provided on the film cartridge for reading bar code data. Also, the other flexible substrate 58
Is for connecting a control circuit board 26 with a magnetic head for magnetically recording various data on the magnetic recording layer of the photographic film.

On the mounting portions 57a, 58a of these flexible substrates 57, 58, there are formed conductive portions 57b, 58b in which a part of the circuit pattern is exposed. The conducting portions 57b and 58b are in contact with and electrically connected to the contacts 26a and 26b provided on the lower surface of the control circuit board 26. Rubber ring 5 embedded in annular grooves 84 and 85
9 and 60 press the mounting portions 57a and 58a of the flexible boards 57 and 58 toward the control circuit board 26 by elasticity, and contact the contact points 26a and 26b of the control circuit board 26 with the conductive sections 57b and 58b of the flexible boards 57 and 58. And make sure they are in contact.

As shown in FIG. 1, the holding member 25, the flexible substrates 57 and 58, and the control circuit
5 and 56, the upper unit 81 is integrally connected. In such a connection portion, the control circuit board 26
Rubber contacts 59a, 60b for securely contacting the contact portions 26a, 26b of the flexible substrate 57, 58 with the conducting portions 57b, 58b of the flexible substrates 57, 58 are formed in the annular groove 8 provided in the holding member 25
4, 85, so that the rubber rings 59, 60 are not displaced without using a pressing ring or the like that presses the rubber ring from above.
26b and the conducting portions 57b and 58b are surely brought into contact with each other.
As a result, the step required for mounting the pressing ring, which is conventionally required, can be omitted, so that the camera can be easily assembled and the cost of the camera can be reduced by reducing the number of parts used.

In the above embodiment, a compact camera has been described as an example. However, the present invention can be applied to, for example, a single-lens reflex camera or an instant camera.

[0025]

As described above, according to the present invention,
A part in which the engaging member engages with the mounting base in a camera having an upper base including a mounting base and first and second substrates integrally engaged with the mounting base. And a rubber ring having a thickness greater than the depth of the annular groove is embedded in the annular groove, and the first substrate is mounted on the mounting base such that a part of the bottom surface is in contact with the rubber ring. On top of this
The first substrate is placed between the mounting base and the second substrate by stacking the second substrate on the substrate and integrally combining the first and second substrates on a mounting base. Since the camera is sandwiched, it is possible to provide a camera that can be easily assembled and that can be reduced in cost by reducing the number of parts used.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a coupling portion of an upper unit of a camera.

FIG. 2 is an external perspective view of the camera of the present invention.

FIG. 3 is an exploded perspective view of the camera of FIG. 2;

FIG. 4 is a cross-sectional view showing a connection portion of an upper unit of a conventional camera.

[Explanation of symbols]

 2 Camera 3 Camera Body 25 Holding Member 26 Control Circuit Board 57, 58 Flexible Board 59, 60 Rubber Ring 84, 85 Ring Groove

Claims (4)

[Claims] 1. A camera having a mounting base and an upper unit comprising a first substrate and a second substrate integrally engaged with the mounting base, the camera being provided above the mounting base. An annular groove is provided on a peripheral edge of a portion where the first substrate is engaged, a rubber ring having a thickness greater than the depth of the annular groove is embedded in the annular groove, and the first substrate is so arranged that a part of the bottom surface is in contact with the rubber ring. Is mounted on the mounting base, and the second substrate is further mounted on the first substrate, and the first and second substrates are integrally joined on the mounting base. A camera, wherein the first substrate is sandwiched between a table and a second substrate. 2. The camera according to claim 1, wherein the mounting base is a holding member that holds at least a finder lens. 3. The camera according to claim 1, wherein the first substrate is a thin flexible substrate partially bendable. 4. The camera according to claim 1, wherein the second board is a control circuit board on which a control circuit for electrically controlling each part of the camera is formed.