JP2022152175A - camera device - Google Patents

Abstract

To provide a camera device with which it is possible to realize two photographing states by a simple and compact structure.SOLUTION: A camera device 1 includes a lens barrel 10 capable of moving in a feeding direction along the optical axis direction from a collapsed state of being accommodated in the inside of a barrel part 22. The lens barrel 10 includes a first barrel unit 31 capable of moving forward to the barrel part 22 from a state of being accommodated in the radially side of the barrel part 22, and a second barrel unit 32 capable of moving from a first position at which being accommodated in the radially inside of the first barrel unit 31 to a second position fed forward from the first barrel unit 31. The lens barrel 10 includes a magnet 56 that is attached to the first barrel unit 31, as first position holding means for holding the second barrel unit 32 at the first position, and a magnetic material 45 that is attached to the second barrel unit 32 so that the second barrel unit 32 is positioned in the vicinity of the magnet 56 when being at the first position.SELECTED DRAWING: Figure 8

Description

The present invention relates to a camera device, and more particularly to a camera device that allows a lens barrel to extend forward along the optical axis direction.

2. Description of the Related Art Conventionally, a camera having a lens barrel extension mechanism that extends a lens barrel forward along the optical axis direction is known (see, for example, Japanese Unexamined Patent Application Publication No. 2002-100002). In such a camera, in order to perform short-distance photography (macro photography) in addition to normal photography, it is necessary to extend the lens barrel further forward than during normal photography. However, the mechanism for extending the lens barrel forward in multiple steps tends to be complicated and requires a large storage space. For this reason, there is a demand for a simple and compact structure for a mechanism for extending the lens barrel further forward than during normal photography.

JP 2014-56009 A

SUMMARY OF THE INVENTION It is an object of the present invention to provide a camera apparatus capable of realizing two photographing states with a simple and compact structure.

According to one aspect of the present invention, there is provided a camera device capable of realizing two photographing states with a simple and compact structure. This camera device includes a barrel portion and a lens barrel that is movable in an extended direction along the optical axis from a collapsed state housed inside the barrel portion. The lens barrel includes: a first lens barrel unit that can move forward with respect to the barrel portion from a state housed inside the barrel portion in the radial direction; a second lens barrel unit movable from a first position housed to a second position extended forward from the first lens barrel unit; and moving the second lens barrel unit to the first position. and a second position holding means for holding the second lens barrel unit at the second position. The first position holding means creates a magnetic attraction force between the first lens barrel unit and the second lens barrel unit when the second lens barrel unit is at the first position. a magnetic attraction mechanism configured to generate and hold the second lens barrel unit in the first position;

FIG. 1 is a perspective view showing a camera device according to a first embodiment of the invention. 2 is an exploded perspective view showing a part of components housed in an internal space formed by the front cover, rear cover, and top cover of the camera device shown in FIG. 1. FIG. FIG. 3 is a perspective view showing a state in which the lens barrel shown in FIG. 2 is maximally extended in the +X direction. 4 is a perspective view showing a normal photographing state of the camera device shown in FIG. 1. FIG. 5 is a perspective view showing a macro shooting state of the camera device shown in FIG. 1. FIG. 6 is a perspective view showing part of the lens barrel in the normal shooting state of FIG. 4. FIG. 7 is a side view of part of the lens barrel of FIG. 6. FIG. 8 is an exploded perspective view of part of the lens barrel of FIG. 6. FIG. FIG. 9 is a side view of part of the lens barrel in the macro photography state of FIG. FIG. 10 is an exploded perspective view of part of the lens barrel in the camera device according to the second embodiment of the present invention. FIG. 11 is a side view of part of the lens barrel shown in FIG. 10 in a normal photographing state. FIG. 12 is a side view of part of the lens barrel shown in FIG. 10 in a macro photography state.

An embodiment of a camera device according to the present invention will be described in detail below with reference to FIGS. 1 to 12. FIG. 1 to 12, the same or corresponding components are denoted by the same reference numerals, and redundant explanations are omitted. In addition, in FIGS. 1 to 12, the scale and dimensions of each component may be exaggerated, and some components may be omitted. In the following description, unless otherwise specified, terms such as "first" and "second" are used only to distinguish components from each other and indicate a particular rank or order. not a thing

FIG. 1 is a perspective view showing a camera device 1 according to a first embodiment of the invention. The camera device 1 in the present embodiment is a camera (instant camera) that uses photographic film that is automatically developed after photographing, but the present invention can of course be applied to other than such an instant camera. In this embodiment, the +X direction in FIG. 1 is referred to as "forward" or "forward", and the -X direction is referred to as "backward" or "rearward" for convenience.

As shown in FIG. 1 , the camera device 1 includes a front cover 2 , a rear cover 3 attached behind the front cover 2 , and a top cover 4 sandwiched between the front cover 2 and the rear cover 3 . A finder window 5 is formed in the front cover 2, and a flash window 6 is arranged adjacent to the finder window 5. - 特許庁A release button 7 is arranged on the -Z direction side of the finder window 5 . A discharge slit 4A extending in the Y direction is formed in the top cover 4, and the developed photographic film is discharged from the discharge slit 4A after photographing.

FIG. 2 is an exploded perspective view showing some of the components housed in the internal space formed by the front cover 2, rear cover 3, and top cover 4. FIG. As shown in FIG. 2, the camera device 1 has a lens barrel 10 housed inside the cylindrical portion 2A (see FIG. 1) of the front cover 2, and a frame 20 to which the lens barrel 10 is attached. ing. The frame 20 includes a substantially rectangular parallelepiped base portion 21 and a cylindrical barrel portion 22 extending forward from the base portion 21 and holding the lens barrel 10 .

The lens barrel 10 in this embodiment has a structure that can be extended in the +X direction. FIG. 3 is a perspective view showing the lens barrel 10 in a state of maximum extension in the +X direction. As shown in FIG. 3 , the lens barrel 10 includes a first barrel portion 11 , a second barrel portion 12 and a third barrel portion 13 . The first tubular portion 11 is movable in the X direction with respect to the barrel portion 22 of the frame 20 , and the second tubular portion 12 is movable in the X direction with respect to the first tubular portion 11 . Also, the third cylindrical portion 13 is movable in the X direction with respect to the second cylindrical portion 12 . In this embodiment, the first barrel portion 11 and the second barrel portion 12 constitute a rear barrel unit 31 (first barrel unit), and the third barrel portion 13 constitutes a front barrel unit 32. (Second barrel unit). A lens (not shown) is housed inside the third cylindrical portion 13 .

As shown in FIG. 3, two engaging projections 14 projecting radially outward are formed at the rear end portion of the first cylindrical portion 11 of the lens barrel 10 . Two guide grooves 24 extending along the direction of the optical axis P (X direction) are formed in the barrel portion 22 of the frame 20 corresponding to the respective engaging projections 14, as shown in FIG. . Each engagement projection 14 of the lens barrel 10 is accommodated inside the guide groove 24 of the barrel portion 22 and engages with the guide groove 24 . The width of the guide groove 24 in the Z direction is slightly larger than the width of the engagement projection 14 in the Z direction. Therefore, the engaging projection 14 is guided by the guide groove 24 and moves in the direction of the optical axis P (X direction) inside the guide groove 24 .

As shown in FIG. 2, near the barrel portion 22 of the frame 20, the operation button 8 is provided while being biased in the +X direction by a coil spring 8A. As shown in FIG. 1, the operation button 8 projects in the +X direction from the front cover 2 in the vicinity of the cylindrical portion 2A of the front cover 2 so that the user can push the operation button 8 in the -X direction. there is When the user pushes the operation button 8 in the -X direction, the engagement projection 14 of the lens barrel 10 is pushed out in the +X direction by the lens barrel extension mechanism 9 attached to the barrel portion 22, and as shown in FIG. The lens barrel 10 is extended in the +X direction (extending direction). When the lens barrel 10 protrudes from the barrel portion 22 in the +X direction in this manner, the power of the camera device 1 is turned on by a switch mechanism (not shown).

The lens barrel extension mechanism 9 includes a lever 9A that pushes the engagement projection 14 in the +X direction in conjunction with the operation button 8, and a torsion coil spring (Fig. not shown). This torsion coil spring biases the engaging projection 14 in the +X direction when the engaging projection 14 moves beyond the predetermined position in the +X direction. It is configured to bias the engaging projection 14 in the -X direction when it moves in the direction. Note that the lens barrel extension mechanism 9 is not limited to a specific one, and may have any structure as long as it can extend the lens barrel 10 in the +X direction.

In this embodiment, when the first cylindrical portion 11 moves in the +X direction with respect to the barrel portion 22, the second cylindrical portion 12 is moved in the +X direction with respect to the first cylindrical portion 11 by a moving mechanism (not shown). It is designed to move. Therefore, as shown in FIG. 4, the second tubular portion 12 is extended from the first tubular portion 11 in the +X direction. The position of the third tubular portion 13 with respect to the second tubular portion 12 in this state will be referred to as the "first position". In this state, the user can perform normal photography (normal photography state). In this normal photographing state, the third barrel portion 13 of the front barrel unit 32 is accommodated radially inside the second barrel portion 12 of the rear barrel unit 31 .

Further, in the present embodiment, the user can manually pull out the third tubular portion 13 further in the +X direction from the second tubular portion 12 in the state shown in FIG. When the third cylindrical portion 13 is pulled out further in the +X direction from the second cylindrical portion 12, as shown in FIG. 5, the second cylindrical portion extends from the first cylindrical portion 11 in the +X direction, The tubular portion 13 is extended in the +X direction from the second tubular portion 12 . The position of the third tubular portion 13 with respect to the second tubular portion 12 at this time is referred to as the "second position". In this state, the user can, for example, perform close-range macro photography (macro photography state).

On the other hand, FIG. 1 shows a state in which the lens barrel 10 is accommodated in the barrel portion 22 of the frame 20, and in this state the lens barrel 10 is the shortest in the X direction. Hereinafter, this state will be referred to as a "collapsed state".

6 is a perspective view showing part of the lens barrel 10 in the normal shooting state of FIG. 4, FIG. 7 is a side view of part of the lens barrel 10 shown in FIG. 6, and FIG. 8 is an exploded perspective view. It is a diagram. As shown in FIGS. 6 to 8, the third barrel portion 13 of the front barrel unit 32 has two cylindrical protrusions 41 and two guide claws 42 protruding radially outward. (Only one of each is shown in FIGS. 6-8).

As shown in FIG. 8, a guide groove 51 extending in the X direction is formed on the inner peripheral surface of the second cylindrical portion 12 of the rear lens barrel unit 31 so as to correspond to the guide claw 42 of the third cylindrical portion 13. It is The guide claws 42 of the third cylindrical portion 13 are engaged with the guide grooves 51 of the second cylindrical portion 12 , and the third cylindrical portion 13 is guided by the guide grooves 51 while moving toward the second cylindrical portion 12 . can be moved in the X direction with respect to

Behind the guide groove 51 of the second cylindrical portion 12, a groove S is formed for movement of the protrusion 41 of the third cylindrical portion 13 described above. extends to the radially outer side of the second cylindrical portion 12 through this groove S.

A pin-shaped spring shaft portion 55 protruding radially outward is formed in the vicinity of the groove S of the second cylindrical portion 12, and a switching spring made of, for example, a torsion coil spring is formed around the spring shaft portion 55. The end of one arm portion 61 of the switching spring 60 is wound, and the arm portion 61 of the switching spring 60 and the spring shaft portion 55 are engaged. The end of the other arm portion 62 of the switching spring 60 is wound around the protrusion 41 of the third cylindrical portion 13 extending to the outside of the second cylindrical portion 12 through the groove S, and the switching spring 60 The arm portion 62 and the projection portion 41 are engaged with each other. That is, between the spring shaft portion 55 of the second cylindrical portion 12 and the projecting portion 41 of the third cylindrical portion 13, the switching spring 60 is bridged so as to be rotatable about the spring shaft portion 55. there is The switching spring 60 is mounted so that the opening angle between the arms 61 and 62 is smaller than the free angle of the switching spring 60 . In the illustrated example, the switching spring 60 is composed of a torsion coil spring, but it can also be composed of another type of spring (for example, a leaf spring). In addition, as shown in FIG. 8 , an overhanging portion 43 extends from the tip of the protrusion 41 of the third cylindrical portion 13 , and the switching spring 60 is engaged with the protrusion 41 by the overhanging portion 43 . is prevented from being detached from the protrusion 41.例文帳に追加

As shown in FIG. 8, magnets 56 are attached to two locations on the inner peripheral surface of the second tubular portion 12 in proximity to the grooves S, respectively. Also, (first) magnetic bodies 45 are embedded in two locations on the outer peripheral surface of the third cylindrical portion 13 in the vicinity of the protruding portion 41 . As shown in FIG. 7, when the lens barrel 10 is in the normal photographing state, that is, when the third barrel portion 13 is at the first position, the magnetic body 45 attached to the third barrel portion 13 is in the first position. 2, and a portion of the magnetic body 45 and a portion of the magnet 56 face each other in the radial direction. Therefore, in this state, a magnetic attractive force is generated between the magnetic body 45 and the magnet 56, and this magnetic attractive force holds the second tubular portion 12 and the third tubular portion 13 at this position. . In this embodiment, as shown in FIG. 7, the magnet 56 is shifted in the -X direction with respect to the magnetic body 45, so that the magnetic attraction force generated between the magnet 56 and the magnetic body 45 causes the third The tubular portion 13 is biased in the -X direction.

Here, in the state shown in FIG. 7, since the arm portion 62 of the switching spring 60 that engages with the projection portion 41 of the third cylindrical portion 13 is located on the -X direction side of the arm portion 61, the third The −X direction component of the biasing force of the switching spring 60 acts on the projecting portion 41 of the cylindrical portion 13 of FIG.

As described above, in the state shown in FIG. 7, the magnetic attraction force generated between the magnet 56 and the magnetic body 45 and the biasing force of the switching spring 60 act on the third cylindrical portion 13. A certain amount of force is required to move the third cylindrical portion 13 in the +X direction from the state shown in FIG. Therefore, even if some force acts on the third tubular portion 13, the third tubular portion 13 can maintain the first position shown in FIG. 7 with respect to the second tubular portion 12. Normal photography is possible.

When switching from the normal shooting state to the macro shooting state, the user manually holds the third cylindrical portion 13 (for example, the flange portion 13A) and pulls it out in the +X direction. At this time, the user presses the third cylindrical portion 13 with a force greater than the sum of the -X direction component of the biasing force of the switching spring 60 and the magnetic attraction force generated between the magnet 56 and the magnetic body 45. When pulled out, the projecting portion 41 of the third cylindrical portion 13 moves in the +X direction. 9 (the position of the protrusion 41 when the positions of the arm 61 and the arm 62 of the switching spring 60 in the X direction match) , the biasing direction of the switching spring 60 is reversed, and a force in the +X direction is applied from the switching spring 60 to the projecting portion 41 of the third cylindrical portion 13 . Therefore, even if the user does not pull out the third tubular portion 13 in the +X direction, the third tubular portion 13 can move toward the second tubular portion 12 in the +X direction ( direction). Finally, the third cylinder portion 13 moves in the +X direction to a second position where it abuts against a stopper (not shown) of the second cylinder portion 12, and the macro photographing state shown in FIGS. becomes.

As described above, the switching spring 60 in this embodiment moves the projection 41 to the -X direction when the projection 41 of the third cylindrical portion 13 is positioned on the -X direction (collapse direction) side of the reference position R. direction, and when the projecting portion 41 of the third cylindrical portion 13 is located on the +X direction (extension direction) side of the reference position R described above, the projecting portion 41 is biased in the +X direction. It is configured.

When changing from the macro shooting state to the normal shooting state or the collapsed state, the user moves the third cylindrical portion 13 (for example, the flange portion 13A) in the -X direction with a force larger than the +X direction component of the biasing force of the switching spring 60. push into. As a result, when the projecting portion 41 of the third cylindrical portion 13 moves to the -X direction side from the reference position R shown in FIG. A force in the −X direction acts on the protrusion 41 of the portion 13 . Further, when the magnetic body 45 embedded in the third cylindrical portion 13 approaches the magnet 56 attached to the second cylindrical portion 12, the magnetic attraction force generated between the magnet 56 and the magnetic body 45 gradually increases. As a result, the third cylindrical portion 13 is urged in the -X direction by this magnetic attraction force. Therefore, even if the user does not push the third tubular portion 13 in the -X direction, the third tubular portion 13 is able to move between the -X direction component of the biasing force of the switching spring 60 and the magnet 56 and the magnetic body 45 . It moves in the -X direction (collapse direction) with respect to the second cylindrical portion 12 due to the magnetic attraction force. Ultimately, the third cylindrical portion 13 moves in the -X direction to the first position where it abuts against the stopper 12A (see FIG. 8) of the second cylindrical portion 12, and the normal position shown in FIGS. It will be in shooting mode.

Thus, in this embodiment, the magnet 56 attached to the second tubular portion 12 and the magnetic body 45 attached to the third tubular portion 13 are arranged so that the third tubular portion 13 is at the first position. A magnetic attraction mechanism configured to sometimes generate a magnetic attraction force between the second tubular portion 12 and the third tubular portion 13 to hold the third tubular portion 13 at the first position. function as Also, the magnetic attraction mechanism and the switching spring 60 function as first position holding means for holding the third cylindrical portion 13 at the first position. The switching spring 60 functions as second position holding means for holding the third tubular portion 13 at the second position. In this embodiment, the magnet 56 is attached to the second cylindrical portion 12 and the magnetic body 45 is attached to the third cylindrical portion 13. However, the magnetic body 45 is attached to the second cylindrical portion 12 and the magnet 56 may be attached to the third tubular portion 13 .

FIG. 10 is an exploded perspective view of part of the lens barrel according to the second embodiment of the present invention. As shown in FIG. 10, the third cylindrical portion 13 in the present embodiment does not have the protrusion 41, and the second cylindrical portion 12 does not have the groove S either. Magnets 145 (only one is shown in FIG. 10) are embedded in two places on the outer peripheral surface of 13 respectively. A first magnetic body 156 and a second magnetic body 157 are attached to the inner peripheral surface behind the guide groove 51 of the second tubular portion 12 . The first magnetic body 156 and the second magnetic body 157 are arranged side by side at positions separated from each other along the X direction.

FIG. 11 is a side view of part of the lens barrel in a normal shooting state. As shown in FIG. 11, when the lens barrel is in the normal photographing state, that is, when the third barrel portion 13 is at the first position, the magnet 145 embedded in the third barrel portion 13 acts as the second magnet. It is located in the vicinity of the first magnetic body 156 attached to the cylindrical portion 12, and a part of the first magnetic body 156 and a part of the magnet 145 face each other in the radial direction. Therefore, in this state, a magnetic attraction is generated between the first magnetic body 156 and the magnet 145, and this magnetic attraction forces the second cylindrical portion 12 and the third cylindrical portion 13 to this position. retained. In this embodiment, as shown in FIG. 11, since the magnet 145 is shifted in the +X direction with respect to the first magnetic body 156, the magnetic attraction generated between the magnet 145 and the first magnetic body 156 The third cylindrical portion 13 is urged in the -X direction by force.

Thus, in the state shown in FIG. 11, the magnetic attraction force generated between the magnet 145 and the first magnetic body 156 acts on the third cylindrical portion 13, so that the state shown in FIG. A certain amount of force is required to move the cylindrical portion 13 of 3 in the +X direction. Therefore, even if some force acts on the third tubular portion 13, the third tubular portion 13 can maintain the first position shown in FIG. 11 with respect to the second tubular portion 12. Normal photography is possible.

FIG. 12 is a side view of part of the lens barrel in the macro photography state. As shown in FIG. 12, when the lens barrel is in the macro photography state, that is, when the third barrel portion 13 is at the second position, the magnet 145 embedded in the third barrel portion 13 is positioned at the second position. It is located in the vicinity of the second magnetic body 157 attached to the cylindrical portion 12, and a part of the second magnetic body 157 and a part of the magnet 145 face each other in the radial direction. Therefore, in this state, a magnetic attraction is generated between the second magnetic body 157 and the magnet 145, and this magnetic attraction forces the second cylindrical portion 12 and the third cylindrical portion 13 to this position. retained. In this embodiment, as shown in FIG. 12, the magnet 145 is shifted in the −X direction with respect to the second magnetic body 157, so that the magnetic field generated between the magnet 145 and the second magnetic body 157 The suction force urges the third cylindrical portion 13 in the +X direction.

Thus, in the state shown in FIG. 12, the magnetic attraction force generated between the magnet 145 and the second magnetic body 157 acts on the third cylindrical portion 13, so that the state shown in FIG. A certain amount of force is required to move the cylindrical portion 13 of 3 in the -X direction. Therefore, even if some force acts on the third tubular portion 13, the third tubular portion 13 can maintain the second position shown in FIG. 12 with respect to the second tubular portion 12. Macro photography is possible.

When switching from the normal shooting state to the macro shooting state, the user manually holds the third cylindrical portion 13 (for example, the flange portion 13A) and pulls it out in the +X direction. At this time, when the user pulls out the third cylindrical portion 13 with a force greater than the magnetic attraction force generated between the magnet 145 and the first magnetic body 156, the third cylindrical portion 13 moves in the +X direction. do. Here, when the magnet 145 moves in the +X direction from the intermediate position between the first magnetic body 156 and the second magnetic body 157, the magnetic attraction force generated between the magnet 145 and the second magnetic body 157 gradually increases, and even if the user does not pull out the third tubular portion 13 in the +X direction, the third tubular portion 13 moves in the +X direction (extension direction) with respect to the second tubular portion 12 . Ultimately, the third cylinder portion 13 moves in the +X direction to a second position where it abuts against a stopper (not shown) of the second cylinder portion 12, resulting in the macro photography state shown in FIG.

When changing from the macro shooting state to the normal shooting state or the collapsed state, the user presses the third cylindrical portion 13 (for example, When the flange portion 13A) is pushed in the -X direction, the third cylindrical portion 13 moves in the -X direction. Here, when the magnet 145 moves in the -X direction from the intermediate position between the first magnetic body 156 and the second magnetic body 157, the magnetic attraction generated between the magnet 145 and the first magnetic body 156 The force gradually increases, and even if the user does not push the third cylindrical portion 13 in the -X direction, the third cylindrical portion 13 moves in the -X direction (collapse direction) with respect to the second cylindrical portion 12. . Finally, the third cylinder portion 13 moves in the -X direction to the first position where it abuts against the stopper 12A (see FIG. 10) of the second cylinder portion 12, and the macro shooting state shown in FIG. Become.

Thus, in this embodiment, the magnet 145 attached to the third cylindrical portion 13 and the magnetic bodies 156 and 157 attached to the second cylindrical portion 12 are arranged so that the third cylindrical portion 13 is positioned at the first position. The third tubular portion 13 is held at the first position by generating a magnetic attraction force between the second tubular portion 12 and the third tubular portion 13 when the third tubular portion 13 is at the second position, magnetic attraction is generated between the second tubular portion 12 and the third tubular portion 13 to hold the third tubular portion 13 at the second position. It functions as a magnetic attraction mechanism configured as follows. The magnetic attraction mechanism includes first position holding means for holding the third tubular portion 13 at the first position and second position holding means for holding the third tubular portion 13 at the second position. function as In this embodiment, the magnet 145 is attached to the third cylindrical portion 13 and the first magnetic body 156 and the second magnetic body 157 are attached to the second cylindrical portion 12. However, the magnet 145 is attached to the second cylindrical portion 12. , and the first magnetic body 156 and the second magnetic body 157 may be attached to the third cylindrical portion 13 .

Also in this embodiment, the switching spring 60 may be added as in the first embodiment. In this case, the magnetic attraction mechanism and the switching spring 60 realize first position holding means and second position holding means.

In addition, the terms "front", "forward", "back", "backward", "upper", "upper", "lower", "lower" and other terms indicating positional relationships used in this specification are It is used in relation to the illustrated embodiment and will vary with the relative positioning of the devices.

As described above, according to one aspect of the present invention, there is provided a camera device capable of realizing two photographing states with a simple and compact structure. This camera device includes a barrel portion and a lens barrel that is movable in an extended direction along the optical axis from a collapsed state housed inside the barrel portion. The lens barrel includes: a first lens barrel unit that can move forward with respect to the barrel portion from a state housed inside the barrel portion in the radial direction; a second lens barrel unit movable from a first position housed to a second position extended forward from the first lens barrel unit; and moving the second lens barrel unit to the first position. and a second position holding means for holding the second lens barrel unit at the second position. The first position holding means creates a magnetic attraction force between the first lens barrel unit and the second lens barrel unit when the second lens barrel unit is at the first position. a magnetic attraction mechanism configured to generate and hold the second lens barrel unit in the first position;

According to such a configuration, when the lens barrel extends forward from the retracted state, the second lens barrel unit will not move unless a force exceeding the magnetic attraction force of the magnetic attraction mechanism acts on the second lens barrel unit. The cylinder unit does not move in the delivery direction. Therefore, even if some force acts on the second lens barrel unit, the second lens barrel unit can be held at the first position by the first position holding means, and the first photographing state can be maintained. can be realized. Further, when the second lens barrel unit is moved to the second position by a force exceeding the magnetic attraction force of the magnetic attraction mechanism, the second position holding means moves the second lens barrel unit to the second position. can be held, and the second photographing state can be realized.

Thus, according to the present invention, there are two photographing states, namely, the first photographing state in which the second lens barrel unit is at the first position with respect to the first lens barrel unit, and the second lens barrel unit. The second photographing state in which the barrel unit is at the second position with respect to the first lens barrel unit can be realized with a simple and compact structure.

The magnetic attraction mechanism further provides a magnetic attraction force between the first lens barrel unit and the second lens barrel unit when the second lens barrel unit is at the second position. The second lens barrel unit may be held at the second position by raising the second lens barrel unit. In this case, the magnetic attraction mechanism is included in the second position holding means.

The magnetic attraction mechanism includes a magnet attached to one of the first lens barrel unit and the second lens barrel unit, and the second lens barrel unit at the first position. A first magnetic body attached to the other one of the first lens barrel unit and the second lens barrel unit so as to be positioned near the magnet at times.

The magnet and the first magnetic body urge the second lens barrel unit toward the first position by a magnetic attraction force generated between the magnet and the first magnetic body. It is preferable that they are displaced from each other in the direction of the optical axis as shown in FIG. By urging the second lens barrel unit toward the first position in this way, the second lens barrel unit can be more reliably held at the first position by the first position holding means. .

The magnetic attraction mechanism further provides a magnetic attraction force between the first lens barrel unit and the second lens barrel unit when the second lens barrel unit is at the second position. The second lens barrel unit may be held at the second position by raising the second lens barrel unit. In this case, the magnetic attraction mechanism is included in the second position holding means. The magnetic attraction mechanism is a second magnetic body attached to the other lens barrel unit so as to be positioned near the magnet when the second lens barrel unit is at the second position. may further include

The magnet and the second magnetic body urge the second lens barrel unit toward the second position by a magnetic attraction force generated between the magnet and the second magnetic body. It is preferable that they are displaced from each other in the direction of the optical axis as shown in FIG. By biasing the second lens barrel unit toward the second position in this way, the second lens barrel unit can be more reliably held at the second position by the second position holding means. .

The second lens barrel unit may have an engaging projection projecting radially outward. In this case, the lens barrel includes a switching spring bridged between the spring shaft portion formed in the first lens barrel unit and the engaging projection of the second lens barrel unit. good too. When the switching spring is positioned on the side of the retraction direction opposite to the extending direction from the reference position, the switching spring urges the engaging projection of the second lens barrel unit in the retraction direction. When the engagement protrusion of the second lens barrel unit is located on the extension direction side of the reference position, the spring biases the engagement protrusion of the second lens barrel unit in the extension direction. It may be configured to be rotatable about the shaft. In this case, the switching spring is included in the first position holding means and the second position holding means.

Although the preferred embodiments of the present invention have been described so far, it goes without saying that the present invention is not limited to the above-described embodiments and may be embodied in various forms within the scope of its technical concept.

1 Camera Device 2 Front Cover 3 Rear Cover 4 Top Cover 5 Viewfinder Window 6 Flash Window 7 Release Button 8 Operation Button 9 Lens Barrel Extension Mechanism 10 Lens Barrel 11 First Cylinder Part 12 Second Cylinder Part 13 Third Cylinder Part 14 engagement protrusion 20 frame 21 base portion 22 barrel portion 24 guide groove 31 rear lens barrel unit (first lens barrel unit)
32 front barrel unit (second barrel unit)
41 projection 42 guide claw 45 magnetic body 51 guide groove 55 spring shaft 56, 145 magnet 60 switching spring 61, 62 arm 156 first magnetic body 157 second magnetic body

Claims (7)

a barrel section;
a lens barrel that is movable in an extending direction along the optical axis from a collapsed state housed inside the barrel,
The lens barrel is
a first lens barrel unit that can move forward with respect to the barrel portion from a state housed inside the barrel portion in the radial direction;
a second lens barrel unit movable from a first position accommodated radially inside the first lens barrel unit to a second position extended forward from the first lens barrel unit;
a first position holding means for holding the second lens barrel unit at the first position;
a second position holding means for holding the second lens barrel unit at the second position;
The first position holding means creates a magnetic attraction force between the first lens barrel unit and the second lens barrel unit when the second lens barrel unit is at the first position. a magnetic attraction mechanism configured to generate and hold the second lens barrel unit in the first position;
camera equipment. The magnetic attraction mechanism further generates a magnetic attraction force between the first lens barrel unit and the second lens barrel unit when the second lens barrel unit is at the second position. configured to raise and hold the second lens barrel unit at the second position;
The second position holding means includes the magnetic attraction mechanism,
A camera device according to claim 1 . The magnetic attraction mechanism is
a magnet attached to one of the first lens barrel unit and the second lens barrel unit;
In the other of the first lens barrel unit and the second lens barrel unit, the second lens barrel unit is positioned near the magnet when the second lens barrel unit is in the first position. a first magnetic body attached;
A camera device according to claim 1 . The magnet and the first magnetic body urge the second lens barrel unit toward the first position by a magnetic attraction force generated between the magnet and the first magnetic body. 4. The camera device according to claim 3, wherein the camera device is arranged with a deviation in the direction of the optical axis. The magnetic attraction mechanism further generates a magnetic attraction force between the first lens barrel unit and the second lens barrel unit when the second lens barrel unit is at the second position. configured to raise and hold the second lens barrel unit at the second position;
The second position holding means includes the magnetic attraction mechanism,
The magnetic attraction mechanism further includes a second magnetic body attached to the other lens barrel unit so as to be positioned near the magnet when the second lens barrel unit is at the second position. include,
5. A camera device according to claim 3 or 4. The magnet and the second magnetic body urge the second lens barrel unit toward the second position by a magnetic attraction force generated between the magnet and the second magnetic body. 6. The camera device according to claim 5, wherein the camera device is arranged with a deviation in the direction of the optical axis. the second lens barrel unit has an engaging projection projecting radially outward;
the lens barrel includes a switching spring bridged between a spring shaft portion formed in the first lens barrel unit and the engaging protrusion of the second lens barrel unit;
The switching spring urges the engagement projection of the second lens barrel unit in the retraction direction when the switching spring is positioned on the retraction direction side opposite to the extension direction with respect to the reference position. When the engaging projection of the second lens barrel unit is located on the extension direction side of the reference position, the spring biases the engagement projection of the second lens barrel unit in the extension direction. configured to be rotatable around the shaft,
The first position holding means and the second position holding means include the switching spring,
3. A camera device according to claim 1 or 2.

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