JP2000338549A - Camera equipped with barrier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera equipped with a barrier which is simply constituted and whose operability is good. SOLUTION: The camera main body 1 is provided with a pair of 1st and 3rd cam grooves 2A and 3A formed in a direction crossing the optical axis, a pair of 2nd and 4th cam grooves 2B and 3B continuously formed so as to be curved from each end of the cam grooves 2A and 3A and a pair of cam followers 4 and 5, the slide barrier 11 is provided with a pair of 5th and 7th cam grooves 12a and 13A formed in a direction crossing the optical axis, a pair of 6th and 8th cam grooves 12B and 13B continuously formed so as to be curved from each end of the cam grooves 12A and 13A, and a pair of cam followers 14 and 15. And, the cam followers 4 and 5 are engaged with the 5th and 6th cam grooves 12A and 12B, and the 7th and 8th cam grooves 13A and 13B, respectively, and the cam followers 14 and 15 are engaged with the 1st and 2nd cam grooves 2A and 2B, and the 3rd and 4th cam grooves 3A and 3B, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a camera having a barrier, and more particularly, to a camera having a barrier for covering a taking lens.

[0002]

2. Description of the Related Art In recent years, in the field of compact cameras, a photographing lens barrel has been retracted and stored in a camera body due to a demand for an external shape or design in consideration of protection and portability of the photographing lens. There are cameras that cover the front of the camera with a sliding barrier or the like.

In a camera having such a slide barrier mechanism, when the slide barrier is closed and covers the taking lens from the viewpoint of design, the slide barrier surface and the front surface of the camera body are substantially flush. Is desirable.

Japanese Patent Laid-Open Publication No. Sho 58-163938 discloses a camera that takes this point into consideration. This camera has a groove (orthogonal groove) orthogonal to the optical axis direction of the photographing lens and two grooves (tip-side grooves) bent in the optical axis direction with respect to this orthogonal groove on the upper and lower portions of the front surface of the camera body. A first optical axis groove, a groove that branches midway is referred to as a second optical axis groove), and a slide barrier that slides along the cam groove. Two pins (four in the upper and lower directions) which are slidably fitted in the cam grooves are arranged on upper and lower portions of the slide barrier, respectively.

The two pins (the pin located closer to the center is the first pin, and the pin located closer to the side is the second pin) are respectively the two optical axis grooves (first and second pins). (Optical axis groove). When the slide barrier is closed, the first and second optical axis grooves are shifted from the orthogonal grooves. As a result, the slide barrier moves rearward of the camera and becomes substantially flush with the front surface of the camera body.

[0006]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No. 58-16
In the camera disclosed in Japanese Patent No. 3938, when closing the slide barrier, the first pin from the center is inserted into the first optical axis groove on the distal end side.
Although the second pin from the side is originally intended to shift to the second optical axis groove that branches off, the first pin flows into the second optical axis groove where the first pin branches in the middle of the movement of the slide barrier. As a result, there was a problem that the slide barrier could not be closed smoothly, resulting in poor usability.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a camera having a simple structure and having an easy-to-use barrier.

[0008]

In order to achieve the above object, a camera having a first barrier according to the present invention is provided with a barrier which can be moved to a position covering a taking lens and a position retracted from the taking lens. The camera comprises a camera body having a pair of cam grooves and a pair of cam followers, and a barrier having a pair of cam followers and a pair of cam grooves.

In order to achieve the above object, a second aspect of the present invention is provided.
A camera having a barrier is a camera body having a pair of cam grooves and a pair of cam followers, and a camera body having a barrier movable to a position covering the taking lens and a position retracted from the taking lens. A cam follower and a barrier having a pair of cam grooves, wherein the pair of cam grooves in the camera body and the pair of cam followers in the barrier are slidably engaged, and the pair of cam grooves in the barrier and the camera A pair of cam followers in the main body are slidably engaged with each other, and the camera main body and the barrier relatively move.

[0010] In order to achieve the above object, a third aspect of the present invention is provided.
In the camera having the first or second barrier, in the camera having the first or second barrier, the cam groove is formed in such a direction that the camera body and the barrier relatively include a component in the optical axis direction of the photographing lens. It is characterized by being formed to be movable.

In order to achieve the above object, a fourth aspect of the present invention is provided.
In the camera having the first or second barrier, the camera groove may be such that the camera groove and the barrier relatively include a component in an optical axis direction of the photographing lens. And a second direction different from the first direction.

[0012]

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

FIG. 1 shows a camera according to an embodiment of the present invention.
FIG. 2 is an exploded assembly view showing a camera body and a slide barrier covering a taking lens in an exploded manner. FIG. 2 is an external perspective view showing a closed state of the slide barrier in the camera after the slide barrier is assembled into the camera body. FIG. 3
FIG. 4 is an external perspective view showing an opened state of the slide barrier after the slide barrier is assembled in the camera body of the camera.

The camera is a barrier that covers the camera body 1 and the photographing lens 7 disposed on the camera body 1, and is a direction including bidirectional components indicated by arrows A or B in FIG. And a slide barrier 11 slidably disposed on the slide barrier 11. In FIG. 1, the slide barrier 11 is shown at a position separated from the camera body 1, but is not removable after being incorporated into the camera body 1. Details will be described later.

Hereinafter, the configurations of the camera body 1 and the slide barrier 11 will be described with reference to the drawings.

This camera has a normal photographing function, and a photographing lens 7 that can be housed in the camera body 1 is disposed substantially at the center of the front surface of the camera body 1. The lens barrel of the photographing lens 7 protrudes from the camera body 1 during photographing, and is collapsed and stored in the camera body 1 when carrying the camera. It is to be noted that a known technique is used for this protruding and retracting mechanism, and a description thereof will be omitted.

The front surface 8A at the center of the camera body 1 on which the photographing lens 7 is disposed is the front surface 8B at both sides of the camera body 1.
Is slightly receded in the optical axis direction to form a concave portion. When the photographic lens 7 is retracted and stored, the photographic lens 7 is stored in the camera body 1 without protruding forward from the front surface 8A. In addition, a slide barrier 11 at the time of closing is provided in the recess, and at this time, the front surface of the slide barrier 11 and the camera body 1 are closed.
Are substantially flush with the front surfaces 8B on both sides (see FIG. 2).

On the upper and lower front surfaces of the camera body 1, steps 9 and 10 are formed from one side (the left side in FIG. 1) of the camera body 1 to the center of the body. In the step surface corresponding to the central front surface 8A, a step is formed deeper rearward as the front surface 8A retreats. This is to make it correspond to the closed state of the slide barrier 11 (see FIG. 2).

A pair of first cam grooves 2A and a third cam for moving the slide barrier 11 in a direction crossing the optical axis of the photographing lens 7 (see arrow A in the figure) are provided on the step surfaces 9 and 10. The groove 3A, the first cam groove 2A, and the third cam groove 3A
A pair of second cam grooves 2B and fourth cam grooves 3B are formed at one end of each of the first and second cam grooves to move in a direction having a component in the optical axis direction of the photographing lens 7 (see arrow B in the figure). ing.

The first cam groove 2A is formed from one side (the left side in FIG. 1) to the center of the camera body 1, and its length corresponds to the movement of the slide barrier 11 in the direction of arrow A. I do. The second cam groove 2 </ b> B is bent back from one end of the first cam groove 2 </ b> A in the vicinity of the center of the camera body 1 and is continuously provided. The first cam groove 2A and the second cam groove 2B are formed as one continuous cam groove, and a cam follower 14, which will be described later, is formed so as to slide and move.

As described above, the second cam groove 2B is provided with the first cam groove 2B.
Although it is bent backward with respect to the cam groove 2A, it is not parallel to the optical axis direction of the photographing lens 7 but also includes a direction component of an arrow A. This is to cope with the closing operation of the slide barrier 11.

On the lower surface of the camera body 1, a step surface 10 substantially symmetrical to the step surface 9 is formed. A third cam groove 3A and a fourth cam groove 3B are formed on the step surface 10 to form pairs with the first cam groove 2A and the second cam groove 2B, respectively.
The third cam groove 3A and the fourth cam groove 3B are arranged symmetrically with respect to the first cam groove 2A and the second cam groove 2B with respect to the camera body 1 in both shapes and positions. Similarly to the above, the third cam groove 3A and the fourth cam groove 3B are formed as one continuous cam groove, and a cam follower 15 described later is formed so as to be slidable and movable.

On the step surface 9 of the camera body 1, the other end of the first cam groove 2A (the left side in FIG. 1) is provided with a cam follower 4 (fifth cam groove described later) facing upward from the step surface 9. 12A and the sixth cam groove 12B).

Further, at the other end (the left side in FIG. 1) of the third cam groove 3A on the step surface 10, a cam follower 5 (seventh cam groove 13A, (Which comes into sliding contact with the eighth cam groove 13B). The cam follower 4 and the cam follower 5 are disposed symmetrically with respect to the camera body 1.

As shown in FIG. 1, a release button 6 is provided on the left upper surface of the camera body 1.

On the other hand, a slide barrier 11 which is engaged with the first cam groove 2A, the second cam groove 2B, the third cam groove 3A and the fourth cam groove 3B and slides is attached to the camera body 1. The slide barrier 11, as shown in FIG.
Sliding portions 19 and 20 extend from upper and lower portions of the barrier main body 17 that covers the photographing lens 7, and have a substantially U-shaped vertical section. When assembled to the camera body 1, the sliding portions 19 and 20 slide opposite to the two step surfaces 9 and 10.

In the sliding portion 19, a fifth cam groove 12A and a sixth cam groove 12B on which the cam follower 4 arranged on the camera body 1 is fitted and slidably contacted on the surface facing the step surface 9.
And one cam follower 14 that fits in sliding contact with the first cam groove 2A and the second cam groove 2B.

The fifth cam groove 12A is a straight guide groove formed from one side (the right side in FIG. 1) to the other side of the slide barrier 11, and its length is the arrow of the slide barrier 11. The length is the same as that of the first cam groove 2A, corresponding to the movement in the direction A.

The sixth cam groove 12B is continuously formed on the other side of the slide barrier 11 by bending from one end of the fifth cam groove 12A toward the front of the camera. The fifth cam groove 12A and the sixth cam groove 12B are formed as one continuous cam groove, and the cam follower 4 comes into sliding contact with the fifth cam groove 12A. The sixth
The cam groove 12B is bent forward with respect to the fifth cam groove 12A, and is formed parallel to and the same length as the second cam groove 2B of the camera body 1.

The cam follower 14 protrudes downward at the other end (the right side in FIG. 1) of the fifth cam groove 12A, and fits into the first cam groove 2A and the second cam groove 2B. Make sliding contact.

In the sliding portion 20, a seventh cam groove 13A and an eighth cam groove 13B on which a cam follower 5 arranged in the camera body 1 is fitted and slidably contacted with a surface facing the step surface 10.
And one cam follower 15 that fits in sliding contact with the third cam groove 3A and the fourth cam groove 3B. The cam grooves 13A and 13B and the cam follower 15 are respectively connected to the cam grooves 12A and 12B and the cam follower 1.
4 and the barrier body 17 are symmetrically arranged.

That is, the seventh cam groove 13A is formed in the third
It is formed as a straight guide groove having the same length as the cam groove 3A,
The eighth cam groove 13B is formed in parallel with and at the same length as the fourth cam groove 3B.

The slide barrier 11 itself is made of a member such as resin and has elasticity. When assembling the slide barrier 11 to the camera body 1 as shown in FIGS. The cam followers 4 and 5 are engaged with the fifth cam groove 12A and the seventh cam groove 13A, respectively.

When the slide barrier 11 is closed, the cam followers 4, 5, 14, 15 are positioned so that the cam followers 4, 5 are the sixth cam groove 12B and the eighth cam groove 1 respectively.
The cam followers 14 and 15 are located at the distal ends of the second and fourth cam grooves 2B and 3B, respectively, at the distal end of 3B, which will be described in detail later.

As shown in FIG. 1, a hook 16 for assisting sliding is formed on the front surface of the slide barrier 11. The hook 16 may have a convex or concave stripe pattern.

Next, referring to FIGS. 4 to 7, the slide barrier 1 in the camera according to the present embodiment having the above-described configuration will be described.
1 will be described. 4, 5, 6, and 7 are top views of the camera of the present embodiment. FIG. 4 shows a state in which the slide barrier 11 is closed, and FIG. 5 shows a state in which the slide barrier 11 is slightly different from the state shown in FIG. 6 shows a state in which the slide barrier 11 has been further moved from the state shown in FIG.
FIG. 7 shows a state where the slide barrier 11 is fully opened.

When the slide barrier 11 is closed after the slide barrier 11 is assembled in the camera body 1, the slide barrier 11 is disposed at the position shown in FIG. At this time, the cam follower 14 (slide barrier 1) is located above the camera.
1) is located at the tip of the second cam groove 2B of the camera body 1, and the cam follower 4 (arranged in the camera body 1) is located at the tip of the sixth cam groove 12B of the slide barrier 11.

On the other hand, although not shown, the cam follower 15 (disposed on the slide barrier 11) is located at the tip of the fourth cam groove 3B of the camera body 1 below the camera, and the cam follower 5 (disposed on the camera body 1). Is a slide barrier 1
It is located at the tip of the first eighth cam groove 13B.

When the barrier is closed, the slide barrier 11 is closed.
Are substantially flush with the front surfaces 8B on both sides of the camera body 1.

When the operator applies a force to the left to open the slide barrier 11, as shown in FIG. 5, the cam follower 14 of the slide barrier 11 moves along the second cam groove 2B in the optical axis direction (arrow). B) and also in a direction crossing the optical axis (see arrow A).

The cam follower 4 of the camera body 1 also moves relatively along the sixth cam groove 12B of the slide barrier 11 in the optical axis direction (see arrow B) and crosses the optical axis (see arrow A). Moving.

Further, the cam follower 5, the cam follower 15
Although not shown, they also operate in the cam grooves engaged with each other.

As a result, the slide barrier 11 moves forward in the camera and moves in the opening direction.

When the operator applies a force to move the slide barrier 11 further leftward from the state shown in FIG. 5, the cam followers 14 and 4 respectively become the first cam grooves 2A,
It moves in the direction of arrow A along the fifth cam groove 12A (see FIG. 6). Similarly, the cam followers 15, 5
It moves in the direction of arrow A along the cam groove 3A and the seventh cam groove 13A.

When the slide barrier 11 is further moved to the left, the cam followers 14 and 4 and the cam followers 15 and 5 contact each other, and the slide barrier 11 is fully opened. In this state,
That is, FIG. 7 shows a fully opened state of the slide barrier 11.

When closing the slide barrier 11 from the fully opened state, the operator operates the hook 16 and the like so as to move the slide barrier 11 rightward. As a result, the slide barrier 11 moves as shown in FIG.
Finally, it reaches the closed position shown in FIG.

During this time, the slide barrier 11 slides smoothly by the action of the cam grooves and the cam followers.

As described above, in the camera of the present embodiment, the cam groove and the cam follower engaging with the other cam groove are arranged on both the camera body 1 and the slide barrier 11, and the cam groove has one branch without branch. Since only one cam follower is arranged so as to engage with one cam groove, the slide barrier 11 can be smoothly operated to open and close the slide barrier 11, which is very convenient.

[0049]

As described above, according to the present invention, it is possible to provide a camera having a simple configuration and a barrier that is easy to use.

[Brief description of the drawings]

FIG. 1 is an exploded assembly view of a camera according to an embodiment of the present invention, in which a camera body and a slide barrier covering a taking lens are exploded.

FIG. 2 is an external perspective view showing a closed state of the slide barrier after the slide barrier is incorporated into a camera body in the camera of the embodiment.

FIG. 3 is an external perspective view showing an opened state of the slide barrier after the slide barrier is incorporated into the camera body in the camera of the embodiment.

FIG. 4 is a top view of the camera according to the embodiment, showing a state where a slide barrier is closed.

FIG. 5 is a top view of the camera of the embodiment, showing a state in which a slide barrier has slightly moved from the state shown in FIG. 4;

FIG. 6 is a top view of the camera of the embodiment, showing a state in which a slide barrier has further moved from the state shown in FIG. 5;

FIG. 7 is a top view of the camera of the embodiment, showing a state where a slide barrier is fully opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Camera body 2A ... 1st cam groove 2B ... 2nd cam groove 3A ... 3rd cam groove 3B ... 4th cam groove 4 ... Cam follower 5 ... Cam follower 7 ... Photographing lens 8A ... Camera body center part front surface 8B ... Camera body both sides Front surface 9 ... Step surface 10 ... Step surface 11 ... Slide barrier 12A ... Fifth cam groove 12B ... Sixth cam groove 13A ... Seventh cam groove 13B ... Eighth cam groove 14 ... Cam follower 15 ... Cam follower

Claims (4)

[Claims] A camera body having a pair of cam grooves and a pair of cam followers, a camera body having a pair of cam grooves and a pair of cam followers, and a pair of cam followers and a pair of cam followers. And a barrier having a cam groove. A camera body having a pair of cam grooves and a pair of cam followers, a camera body having a pair of cam grooves and a pair of cam followers, and a pair of cam followers and a pair of cam followers. A pair of cam grooves in the camera body and a pair of cam followers in the barrier are slidably engaged with each other, and a pair of cam grooves in the barrier and a pair of cam grooves in the camera body. A camera having a barrier characterized in that the cam follower is slidably engaged with the cam follower, and the camera body and the barrier relatively move. 3. The cam groove is formed so that the camera body and the barrier are relatively movable in a direction including a component in an optical axis direction of the photographing lens.
Or a camera having the barrier according to 2. 4. The cam groove is movable in a first direction in which the camera body and the barrier relatively include a component in an optical axis direction of the photographing lens, and in a second direction different from the first direction. The camera having a barrier according to claim 1, wherein the camera is formed in a shape.