JP2003302678A - Camera main body structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide camera main body structure capable of realizing the confirmation of a function by a film feeding unit single body and the facilitation of the succeeding assembling work of the film feeding unit to a camera main body. <P>SOLUTION: The camera main body structure is provided with recess notches 1f and 1g on the camera main body 1 having a cartridge chamber 1b and a film take-up chamber 1c, while a cartridge driving shaft 19 and a film take-up shaft 21 are arranged in a rotationally driven state on the film feeding unit 2 side, and further it is provided with projecting wall parts 8f and 8g fit in the notches 1f and 1g. In the case of assembling the unit 2 in the main body 1, the shafts 19 and 21 are inserted through the notches 1f and 1g and inserted in the main body 1, and then the wall parts 8f and 8g are fit in the notches 1f and 1g so as to form the wall surface of the chamber part. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera body assembly structure.

[0002]

2. Description of the Related Art Conventionally, regarding an assembly structure of a camera body and a film feeding unit (film transfer mechanism), the one disclosed in Japanese Utility Model Publication No. 4-35873 has a film cartridge chamber and a film winding / accommodating chamber. The film transfer mechanism unit is assembled from the lower side of the camera body.

[0003]

However, the one disclosed in Japanese Utility Model Publication No. 4-35873 mentioned above is a single unit because the film transfer mechanism unit is not in an operable state before being incorporated in the camera body. It was difficult to fully check the operating functions in. For example,
In the film transfer mechanism unit alone, the film winding shaft is not completely supported, and it is difficult to sufficiently check the film feeding operation.

Therefore, a method of sequentially incorporating a lens frame unit and a winding unit in the camera body from one front side along the optical axis direction is considered for facilitating the assembling in consideration of automatic assembling. However, if the film transport mechanism unit that supports the complete take-up shaft is inserted from the front side of the camera body and built in, the film take-up shaft or the cartridge drive shaft will be the film take-up storage chamber or the film cartridge chamber. Can not be installed because it interferes with the wall surface of.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to confirm the function of the film feeding unit alone, and further, to the camera body of the film feeding unit thereafter. An object of the present invention is to provide a camera body structure that can be easily assembled.

[0006]

According to another aspect of the present invention, there is provided a camera main body structure in which a film cartridge chamber and a film winding / accommodating chamber are provided, and a film body which is engaged with the film cartridge. It has at least one of a cartridge drive shaft for feeding and a film winding shaft for winding the film sent out from the cartridge, and is assembled in a separate assembly process from the camera body, A film feeding unit that is installed along the photographing optical axis from approximately the front to drive film feeding, and the cartridge driving shaft and / or the film winding unit when the film feeding unit is installed in the camera body. So that the axis does not interfere with the camera body,
A relief notch formed in a front wall of the cartridge chamber and / or the film winding / accommodating chamber of the camera body, and the film feeding unit,
The cartridge chamber and / or the wall portion of the film winding / accommodating chamber, and a partial wall portion fitted to the wall portion, wherein the film feeding unit is incorporated in the camera body,
In a state where the partial wall portion is fitted to the wall portion of the cartridge chamber and / or the film winding / accommodating chamber, the inner wall surface of the partial wall portion may be the inner wall of the cartridge chamber and / or the film winding / accommodating chamber. Each of them is configured and the escape notch is shielded.

A camera body structure according to a second aspect of the present invention is the camera body structure according to the first aspect, wherein the film feeding unit rotatably supports both ends of the film winding shaft in the axial direction. ing.

A camera body structure according to a third aspect of the present invention is the camera body structure according to the first aspect, wherein when the film feeding unit is incorporated into the camera body,
A guide means is provided for guiding the film feeding unit with respect to the camera body so as to be movable in a sliding direction from substantially the front side along the photographing optical axis.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a camera to which a camera body structure according to an embodiment of the present invention is applied.
FIG. 2 is an exploded perspective view of the camera body and the film feeding unit. FIG. 3 is a perspective view showing a state in which the film feeding unit is assembled to the camera body. FIG. 4 is a perspective view of the camera before the front cover is attached. Figure 5
FIG. 6 is a cross-sectional view of the camera body and the film feeding unit in an assembled state. FIG. 6 is a cross-sectional view of the central portion of the present camera in the film loading state. In the following description, the subject side of the camera is the front side and the non-subject side is the back side. The left-right direction of the camera is the direction when viewed from the front side.

The camera of this embodiment comprises a camera body 1 and
A lens barrel 3 attached to the center of the front side of the camera body 1 and having a photographing optical axis O, and a finder / AF (autofocus) unit 14 fixed to the upper part of the camera body 1.
The strobe light emitting unit 15, the film feeding unit 2 attached to the bottom of the camera body, and the electric circuit main board 31 attached to the front side of the camera body 1.
A front cover 4 that is an exterior body that covers the front side of the camera body 1, a rear cover 5 that is an exterior body that covers the back side of the camera body 1, and an open / close lid that is rotatably supported by the rear cover 5. 6 and a battery lid 7.

As shown in FIGS. 2 and 5, the camera body 1 has an aperture portion 1a and a lens barrel mounting screw hole 1v in the central portion, and a battery chamber 1d and a condenser chamber 1 on the left side.
e, a film cartridge chamber (hereinafter referred to as a cartridge chamber) 1b, a film winding storage chamber (hereinafter referred to as a film winding chamber) 1c on the right side, and a screw hole 1x for mounting a finder / AF unit. And a screw hole 1y for mounting the strobe light emitting unit 15 and a screw insertion hole 1w for mounting the cover.

The battery chamber 1d is formed as a chamber which is open on the left side of the rear surface of the main body, and the battery contact portion 16 is arranged on the bottom surface thereof. A battery contact portion (not shown) is also arranged on the upper surface portion. The battery 35 can be loaded into the battery chamber 1d from the back side (FIG. 6).

The capacitor chamber 1e is formed as a chamber whose front side is open. The strobe main condenser 34 is inserted into the condenser chamber 1e from the front side (FIG. 6).

A film cartridge 37 can be loaded in the cartridge chamber 1b of the camera body 1, and a film winding shaft 21 described later is inserted in the film winding chamber 1c.

Further, the cartridge chamber 1b and the film winding chamber 1c of the camera body 1 have a shape in which the back side of the camera body 1 is open, and the escape notch is formed on the front wall surface of each of them. Parts 1f and 1g are provided.

The escape notch 1f of the cartridge chamber 1b is a notch through which the cartridge drive shaft 19 can be inserted, and is a partial notch from the bottom side to the upper side. A fitting portion 1j is provided. Further, a slide guide portion 1m which is a notch continuous with the escape notch portion 1f and which is a guide means parallel to the optical axis O is provided on the bottom surface side of the camera body.

The escape notch 1g of the film winding chamber 1c is a notch from the bottom surface side to the upper surface of the winding chamber, and is provided with a light shielding step 1p and a fitting portion 1q. Further, a slide guide portion 1r of guide means parallel to the optical axis O is provided on the bottom surface side of the camera body, which is a notch continuous with the escape notch portion 1g. Also, from the escape notch 1g to the film winding chamber 1c
A slide guide portion 1s of parallel guide means extending along the optical axis O is also provided on the upper surface side of the.

Locking portions 1h and 1i for locking the claws of the feeding main body 8 are provided on both outer walls on the front side of the cartridge chamber 1b and the film winding chamber 1c.

As shown in FIG. 2, the film feeding unit 2 includes a feeding unit main body 8, a cartridge drive shaft 19 rotatably mounted on a bottom surface 8u of the feeding unit main body, and a feeding unit main body 8 as shown in FIG. A hollow film winding shaft 21 which is rotatably supported by the film, a drive motor 24 housed in the film winding shaft 21 and supported by the feeding unit main body 8, and a film feeding drive gear train (not shown). , And a bottom plate 9.

The feeding unit body 8 has a bottom upper surface 8
slide insertion portions 8m and 8r, which are arranged on the u and extend in the back direction along the optical axis O direction, which are projecting guide means.
Shaft holes 8c and 8b provided at the tip ends of the slide insertion portions 8m and 8r, convex wall portions 8f and 8g which are partial wall portions protruding upward, and upper portions of the convex wall portions 8f and 8g. At the slide insertion portion 8s, which is a guide unit that projects and extends in the back direction along the optical axis O direction, the shaft hole 8a provided at the tip of the slide insertion portion 8s, and at both ends of the feeding unit main body 2. The locking portion 1 provided on the camera body 1 side
It has locking claws 8h and 8i that can be locked to h and 1i, and a bottom gear housing 8v in which a film feed drive gear train (not shown) is incorporated.

The slide insertion portions 8m, 8r, 8s are
The slide guide portions 1m, 1r, 1s of the camera body 1 can be slidably fitted into the slide guide portions 1m, 1r, 1s, respectively.

The fitting portion 8 is provided on the convex wall portions 8f and 8g.
j, 8q are provided, and the fitting portion 1j of the escape notch 1f of the cartridge chamber 1b and the fitting portion 1j, respectively,
It can be fitted in the fitting portion 1q of the escape notch 1g of the film winding chamber 1c from the optical axis O direction. Further, the upper surface portion 8t of the convex wall portion 8g fits into the upper surface portion 1t of the film winding chamber 1c without a gap. In the fitted state, the relief notches 1f and 1g are shielded from light by the wall surfaces of the convex wall portions 8f and 8g. That is, the escape notches 1f and 1g are completely shielded from light by the outer portions of the convex wall portions 8f and 8g contacting the light shielding step portions 1k and 1p.

In the shaft hole 8c of the feeding unit main body 2,
Although the cartridge drive shaft 19 is rotatably supported, the height of the cartridge drive shaft 19 is not limited to the convex wall portion 8.
lower than f.

The film winding shaft 21 is a hollow shaft member having a shaft portion 21a integrally provided at the upper end and a drive gear portion 23 integrally provided at the lower end. In this film winding shaft 21, the shaft portion 21a is provided with the shaft hole 8 of the convex wall portion 8g.
The outer peripheral shaft portion of the fill of the drive gear portion 23 is fitted into the shaft hole 8b so as to be rotatably attached. When the film winding shaft 21 is fitted, the shaft portion 21a of the film winding shaft 21 is fitted into the shaft hole 8a while elastically deforming the upper surface portion 8t of the convex wall portion 8g upward. In the fitted state, the upper end surface of the film winding shaft 21 does not protrude from the upper surface portion 8t of the convex wall portion 8g.

The locking claws 8h and 8i provided at both ends of the feeding unit body 8 are the locking portions 1 on the camera body 1 side when the film feeding unit 2 is inserted into the camera body 1.
It is locked by h and 1i. In the locked state, the bottom surface 1u of the camera body 1 and the bottom surface 8u of the feeding unit body 8 are in close contact with each other and fixed.

The lens barrel 3 has a fixed frame 11, a moving frame 12, and a taking lens 13 supported by the moving frame 12. The fixed frame 11 is provided with a screw insertion hole 11 a for mounting on the camera body 1.

The electric circuit main board 31 is a CPU.
An electrical control element such as 32 is mounted, and the camera body 1
Is attached to the front surface of the device with adhesive tape or the like.

The front cover 4 has an opening 4a into which the lens barrel 3 is fitted and a finder window 4d, A.
F windows 4b and 4c and a strobe light emitting window 4e are provided, and a release operation button 4h is further provided on the upper surface portion. Further, screw holes 4f and 4g for fixing the camera body 1 and the rear cover 5 are provided inside.

The rear cover 4 has an opening 5a in which the opening / closing lid 6 is mounted and an opening 5 in which the battery lid 7 is mounted.
c, a finder eyepiece window portion 5b, and four screw insertion holes 5d for attachment. Open / close lid 6 and battery lid 7
Are rotatably supported by the support shaft 36 with respect to the rear cover 4.

A pressure plate 16 supported by a pressure plate spring 17 is attached to the opening / closing lid 6.

Next, a procedure for assembling the camera of the present embodiment having the above-mentioned structure will be described. First, the cartridge drive shaft 19 and the film winding shaft 21 are assembled to the feeding unit body 8, and the driving motor 24 is inserted into the film winding shaft 21 and fixed to the feeding unit body 8. Bottom gear housing 8 of the feeding unit body 8
A shaft feed drive gear train or the like is incorporated in v, and the bottom plate 9 is attached. Then, the rotational states of the cartridge drive shaft 19 and the film take-up shaft 21 can be confirmed in the unit assembled state in which the bottom plate 9 of the film feeding unit 2 is already attached.

The film feeding unit 2 is inserted into the camera body 1 from the front side along the optical axis O direction and assembled (FIG. 3). That is, the slide guide portions 8m and 8r and the slide guide 8s of the feeding unit body 8 are slid and inserted into the notched slide guide portions 1m and 1s and the upper slide guide portion 1s on the camera body 1 side.
By the sliding operation, the cartridge drive shaft 19 and the film winding shaft 21 are inserted into the cartridge chamber 1b and the film winding chamber 1c of the camera body 1 through the escape notches 1f and 1g. Then, the convex wall portion 8 of the feeding unit main body 8 is provided in the escape notches 1f and 1g.
The f and 8g are fitted and the escape notches 1f and 1g are shielded. In this shielded assembled state, the inner wall surfaces of the convex wall portions 8f and 8g form part of the inner wall surfaces of the cartridge chamber 1b and the film winding chamber 1c.

The fixing frame 11 of the taking lens barrel 3 is fixed with screws 41 to the camera body 1 in which the film feeding unit 2 shown in the state of FIG. 3 is mounted. Further, the finder / AF unit 14 and the strobe light emitting unit 15 are attached to the upper surface of the camera body 1 with screws 42 and 43. Then, the connecting flexible printed circuit board 33 of the finder / AF unit 14 is connected to the main board 31 side. Further, the main condenser 34 is inserted into the condenser chamber 1e of the camera body 1.

The camera assembling work is completed by covering the camera body 1 with the lens barrel 3 and the like with the rear cover 5 and the front cover 4 and inserting the screws 44 and 45 and screwing the screws.

In the assembling procedure described above, the film feeding unit 2 can be assembled into the camera body 1 by inserting it from the front even after the rear cover 5 of the camera body 1 is mounted.

When the camera of this embodiment assembled by the above-described assembly procedure is used for photographing, first, the battery lid 7 is opened and the battery 35 is loaded in the battery chamber 1d.
Close. Further, the opening / closing cover 6 is opened, the film cartridge 37 is loaded in the cartridge chamber 1b, and the opening / closing cover 6 is closed. With the closing of the opening / closing cover, the drive motor 24 is started, and the film winding shaft 21 starts rotating. Along with the rotation, the film 38 is wound around the film winding shaft 21, the film loading is completed, and the film is set in a photographable state (FIG. 6).

According to the camera of this embodiment, the film feeding unit 2 can be easily slid into the camera body 1 from the front side and can be fixed without using screws or the like. And the notches 1f and 1g for escape of the camera body necessary for the slide insertion.
Is completely shielded from light by fitting the convex wall portions 8f and 8g on the feeding unit body 8 side. Further, in the film feeding unit 2, since the cartridge drive shaft 19 and the film winding shaft 21 are rotatably supported in the state of the unit before the assembling, the function check can be performed before the assembling.

In the camera of the above-described embodiment, the film feeding unit 2 is fixed to the camera body 1 by locking the locking claws 8h and 8i. It may be configured to be fixed.

The following configuration can be obtained based on the above-described embodiment of the present invention. That is, (Supplementary Note 1) a camera main body in which a film cartridge chamber is provided and a cartridge drive shaft that engages with the film cartridge to feed a film, and is assembled in a different process from the camera main body. The film feed unit that is incorporated into the camera body from the front along the shooting optical axis to drive the film feed, and the cartridge drive shaft when the film feed unit is incorporated into the camera body. In order not to interfere with the camera body, the escape notch formed in the front wall portion of the cartridge chamber of the camera body and the film feed unit formed in the film feeding unit are fitted to the front wall portion of the cartridge chamber. A partial wall portion, the film feeding unit is incorporated in the camera body, and the partial wall portion is provided in front of the cartridge chamber. In mated state section, the camera body structure, characterized in that the wall of the partial wall section with respectively constituting the inner wall of the cartridge chamber and adapted to shield the relief notches unit.

(Supplementary Note 2) The camera main body is provided with a film winding and accommodating chamber and a film winding shaft for winding the film. The film feed unit that is installed from the front along the shooting optical axis to drive the film feed and the film take-up shaft interferes with the camera body when the film feed unit is installed in the camera body. In order not to do so, the escape notch formed in the front wall of the film winding chamber of the camera body and the front notch formed in the film feeding unit are fitted to the front wall of the film winding chamber. A partial wall portion, the film feeding unit is incorporated in the camera body, and the partial wall portion is fitted with a wall portion in front of the film winding chamber. Of the camera main body structure, each of which constitutes an inner wall of the film winding chamber, and shields the escape notch.

(Supplementary Note 3) The camera main body in which the film cartridge chamber and the film winding and accommodating chamber are arranged, the cartridge drive shaft for engaging the film cartridge to feed the film, and the film delivered from the cartridge. It has at least one of a film winding shaft for winding and is combined with the camera main body in a separate process, and is incorporated into the camera main body from approximately the front along the photographing optical axis to drive film feeding. And a partial wall portion formed in the film feeding unit and fitted with a wall portion of the cartridge chamber and / or the film winding / accommodating chamber. Is assembled into the camera body and the partial wall is fitted to the wall of the cartridge chamber and / or the film winding / accommodating chamber. In a state, the wall surface of the partial wall portion constitutes an inner wall of the cartridge chamber and / or the film winding / accommodating chamber, respectively.

[0042]

As described above, according to the present invention, it is possible to assemble the film feeding unit to the camera body after the functions of the film feeding unit alone have been sufficiently confirmed, and the assembling work is performed. A camera body structure that is easy to provide can be provided.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a camera to which a camera body structure according to an embodiment of the present invention is applied.

FIG. 2 is an exploded perspective view of a camera body and a film feeding unit in the camera shown in FIG.

FIG. 3 is a perspective view of the camera of FIG. 1 with a film feeding unit assembled to the camera body.

FIG. 4 is a perspective view of the camera of FIG. 1 before a front cover is attached.

5 is a cross-sectional view of the camera body and the film feeding unit in the camera of FIG. 1 in an assembled state.

6 is a transverse cross-sectional view of the central portion of the camera of FIG. 1 in a film loading state.

[Explanation of symbols]

1 ... Camera body 1b ... cartridge chamber (film cartridge chamber) 1c ... Film winding room (film winding storage room) 1f, 1g ... Notch for escape 1m, 1r, 1s ... Slide guide (guide means) 2 ... Film feeding unit 8f, 8g ... Convex wall portion (partial wall portion) 8m, 8r, 8s ... Slide guide (guide means) 19 ... Cartridge drive shaft 21 ... Film winding shaft 37 ... Film cartridge O ... Shooting optical axis

Claims (3)

[Claims] 1. A camera body in which a film cartridge chamber and a film winding / accommodating chamber are arranged, a cartridge drive shaft which engages with the film cartridge to feed the film, and winds up the film sent from the cartridge. It has at least one of a film winding shaft and is assembled in a separate assembly process from the camera body, and is assembled from the front along the photographing optical axis to the camera body to drive the film feeding drive. A film feeding unit to be performed, and the cartridge chamber and the cartridge chamber of the camera main body so that the cartridge driving shaft and / or the film winding shaft do not interfere with the camera main body when the film feeding unit is incorporated into the camera main body. And / or an escape notch formed on a front wall of the film winding storage chamber, and And a partial wall portion formed in the rum feeding unit and fitted with a wall portion of the cartridge chamber and / or the film winding / accommodating chamber, wherein the film feeding unit is incorporated in the camera body. In a state where the partial wall portion is fitted with the wall portion of the cartridge chamber and / or the film winding / accommodating chamber, the inner wall surface of the partial wall portion respectively defines the inner wall of the cartridge chamber and / or the film winding / accommodating chamber. A camera body structure, characterized in that it is configured to shield the escape notch. 2. The camera body structure according to claim 1, wherein the film feeding unit rotatably supports both axial ends of the film winding shaft. 3. A guide means for guiding the film feeding unit to the camera body so as to be movable in a sliding direction from a substantially front side along a photographing optical axis when the film feeding unit is incorporated in the camera body. The camera body structure according to claim 1, further comprising: