JP2022128236A - 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 lens barrel 10 of a camera device 1 includes a rear barrel unit 31 capable of moving forward to a barrel part 22 and a front barrel unit 32 capable of moving from a first position accommodated in the radially inside of the rear barrel unit 31 to a second position stretched forward from the rear barrel unit 31. The front barrel unit 32 has a protrusion 41 that projects to the radially outside. The lens barrel 10 includes a switching spring 60 bridged between a spring axis part 55 formed in the rear barrel unit 31 and the protrusion 41 of the front barrel unit 32. The switching spring 60 is constituted so that the direction of urging changes depending on the position of the protrusion 41 of the front barrel unit 32. The spring axis part 55 of the rear barrel unit 31 has a spring engagement part 56 that extends toward the radially outside and which an arm part 61 of the switching spring 60 engages with, and an overhang part 57 that extends from the tip of the spring engagement part 56 in a direction X that is perpendicular to a direction in which the spring engagement part 56 extends.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. 2002-100001). 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. The second lens barrel unit has a protrusion that protrudes radially outward. The lens barrel has a switching spring bridged between the spring shaft portion formed in the first lens barrel unit and the projection portion of the second lens barrel unit. When the projection of the second lens barrel unit is positioned on the side of the retraction direction opposite to the extending direction from the reference position, the switching spring moves the projection of the second lens barrel unit. When the projecting portion of the second lens barrel unit is biased in the retracting direction and the projecting portion of the second lens barrel unit is located on the extension direction side of the reference position, the projecting portion of the second lens barrel unit is extended. It is rotatable about the spring shaft portion so as to bias it in the direction. The spring shaft portion of the first lens barrel unit extends radially outward, includes a spring engaging portion with which the switching spring is engaged, and the spring engaging portion extends from a tip of the spring engaging portion. and an overhang extending in a direction perpendicular to the direction.

FIG. 1 is a perspective view showing a camera device according to one 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 an exploded 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 a cross section taken along line AA of FIG. FIG. 11 is an enlarged perspective view showing a second cylindrical portion of a camera device according to another embodiment of the invention. 12 is a longitudinal sectional view showing part of the lens barrel including the second barrel shown in FIG. 11. FIG.

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 one 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 an exploded 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. 3 is an exploded perspective view of part of the lens barrel 10; FIG. As shown in FIG. 6, the second barrel portion 12 of the rear barrel unit 31 has a plurality of guide claws 50 projecting radially outward. A guide groove 15 extending in the X direction is formed in the inner peripheral surface of the first barrel portion 11 of the rear lens barrel unit 31 so as to correspond to the guide claw 50 of the second barrel portion 12 . The guide claws 50 of the second cylindrical portion 12 are engaged with the guide grooves 15 of the first cylindrical portion 11 , and the second cylindrical portion 12 is guided by the guide grooves 15 while moving toward the first cylindrical portion 11 . can be moved in the X direction with respect to

Further, as shown in FIG. 8, the third barrel portion 13 of the front lens barrel unit 32 has two cylindrical projections 41 and two guide claws 42 projecting radially outward ( Only one of each is shown in FIG. A guide groove 51 extending in the X direction is formed in 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 . 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 tubular portion 12, a pair of elastic pieces 52 extend like a cantilever in the -X direction. Therefore, the free end sides (−X direction sides) of these elastic pieces 52 are elastically deformable. Between these elastic pieces 52, a movement space S is formed in which the projection 41 of the third cylindrical portion 13 moves. It extends to the outside of the second tubular portion 12 through S. Further, each elastic piece 52 has a protruding portion 53 protruding toward the inside of the movement space S near the end on the -X direction side. These protrusions 53 are positioned on the path of the protrusions 41 moving in the X direction, and the width of the movement space S is narrowed by these protrusions 53 .

A pin-shaped spring shaft portion 55 projecting radially outward is formed in the vicinity of one elastic piece 52 of the second tubular portion 12 . As shown in FIGS. 7 and 8, the spring shaft portion 55 includes a cylindrical spring engaging portion 56 extending outward in the radial direction of the second cylindrical portion 12, and an extension portion 57 extending in the X direction. An end of one arm portion 61 of a switching spring 60 made of, for example, a torsion coil spring is wound around the spring engaging portion 56 of the spring shaft portion 55 . It is engaged with the spring engaging portion 56 .

The end of the other arm portion 62 of the switching spring 60 is wound around the projection 41 of the third cylindrical portion 13 extending to the outside of the second cylindrical portion 12 through the movement space S, Arm 62 of 60 and projection 41 are engaged. 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 can rotate about the spring engaging portion 56 of the spring shaft portion 55. It is bridged like this. 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 plate spring).

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 overhanging portion 43 causes the switching spring 60 that engages with the protrusion 41 to move toward the protrusion 41 . is prevented from coming off. In addition, since the spring shaft portion 55 also has a projecting portion 57 extending in the -X direction, the switching spring 60 engaged with the spring engaging portion 56 is moved from the spring engaging portion 56 by the projecting portion 57. It is prevented from coming off.

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. Therefore, unless a force exceeding the -X direction component of the biasing force of the switching spring 60 acts on the third cylindrical portion 13, the third cylindrical portion 13 does not move in the +X direction. In addition, in the state shown in FIG. 7, the projecting portion 41 of the third cylindrical portion 13 is located in the -X direction from the projecting portion 53 of the elastic piece 52 of the second cylindrical portion 12, so the biasing force of the switching spring 60 is Even if a force exceeding the -X direction component of the third cylindrical portion 13 acts on the third cylindrical portion 13, the projecting portion 53 of the elastic piece 52 is engaged with the projecting portion 41 of the third cylindrical portion 13, so that the third In order for the projecting portion 41 of the cylindrical portion 13 to move over the projecting portion 53 of the elastic piece 52 in the +X direction, the projecting portion 41 of the third cylindrical portion 13 must be able to get over the projecting portion 53 of the elastic piece 52. A force for elastically deforming the elastic piece 52 is required. Thus, 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 is applied to the third cylindrical portion 13 when the lens barrel 10 is extended in the +X direction (extending direction) from the collapsed state by the lens barrel extending mechanism 9, the third cylindrical portion 13 can maintain the first position shown in FIG.

As described above, 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, if the user pulls out the third tubular portion 13 with a force greater than the force for elastically deforming the elastic piece 52 to such an extent that the protrusion 41 of the third tubular portion 13 rides over the protrusion 53 of the elastic piece 52, , the projecting portion 41 of the third cylindrical portion 13 moves over the projecting portion 53 of the elastic piece 52 and 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. Note that the timing of urging the projecting portion 41 of the third cylindrical portion 13 in the +X direction is after the projecting portion 41 has passed over the projecting portion 53 of the elastic piece 52. It is preferable to set the reference position R on the +X direction (feeding direction) side of the top portion.

When switching from the macro shooting state to the normal shooting state or the collapsed state, the user must press the biasing force of the switching spring 60 to be greater than the +X direction component, and furthermore, the projection 41 of the third cylindrical portion 13 will project from the elastic piece 52 . The third cylindrical portion 13 (for example, the flange portion 13A) is pushed in the −X direction with a force larger than the force that elastically deforms the elastic piece 52 to the extent that the portion 53 is overcome. As a result, the projecting portion 41 of the third cylindrical portion 13 climbs over the projecting portion 53 of the elastic piece 52 and moves in the -X direction. At this time, since the projection 41 of the third cylindrical portion 13 is located on the -X direction side of the reference position R shown in FIG. A force in the -X direction acts, and the protrusion 41 of the third cylindrical portion 13 moves to the above-described first position.

Further, in the present embodiment, since the projection 41 of the third cylindrical portion 13 is cylindrical, the friction between the projection 41 of the third cylindrical portion 13 and the projections 53A, 53B of the elastic pieces 52A, 52B is Since it becomes smaller, the movement of the third cylindrical portion 13 in the X direction becomes smoother, and the durability of the projecting portion 41 and the projecting portions 53A and 53B is improved. In addition, the user's operational feeling with respect to the third tubular portion 13 is also improved.

In this embodiment, since the projecting portions 53 of the two elastic pieces 52 are arranged to face each other, the projecting portions 41 of the third cylindrical portion 13 are pushed by the projecting portions 53 of the two elastic pieces 52 facing each other. It can be held at the first position more reliably.

As described above, one arm portion 61 of the switching spring 60 is wound around the spring engaging portion 56 of the spring shaft portion 55 of the second tubular portion 12. Since the protruding portion 57 extends in a direction (−X direction in the illustrated example) perpendicular to the direction in which the spring engaging portion 56 extends, the spring engagement of the spring shaft portion 55 of the second tubular portion 12 When attaching the arm portion 61 of the switching spring 60 to the portion 56 , the projecting portion 57 prevents the arm portion 61 of the switching spring 60 from coming off the spring engaging portion 56 . This facilitates assembly of the lens barrel 10 .

Returning to FIG. 6, grooves 16 extending in the X direction are formed in the inner peripheral surface of the first cylindrical portion 11 so as to correspond to the spring shaft portions 55 of the second cylindrical portion 12 described above. FIG. 10 is a cross section taken along line AA of FIG. 7 and shows the relationship between the groove 16 of the first cylindrical portion 11 and the spring shaft portion 55 of the second cylindrical portion 12. As shown in FIG. As shown in FIG. 10, the tip of the spring shaft portion 55 of the second tubular portion 12 is positioned inside the groove 16 of the first tubular portion 11, and the second tubular portion 12 is positioned in the first tubular portion. When moving in the X direction with respect to the portion 11 , the tip portion of the spring shaft portion 55 of the second cylindrical portion 12 moves inside the groove 16 of the first cylindrical portion 11 . Here, since both the groove 16 of the first cylindrical portion 11 and the projecting portion 57 of the spring shaft portion 55 of the second cylindrical portion 12 extend in the X direction, the spring shaft of the second cylindrical portion 12 When the portion 55 moves inside the groove 16 of the first cylindrical portion 11 , the projecting portion 57 of the spring shaft portion 55 is prevented from colliding and interfering with the first cylindrical portion 11 . Further, after assembling the first tubular portion 11 and the second tubular portion 12, the spring shaft portion 55 of the second tubular portion 12 enters the groove 16 of the first tubular portion 11, so that the spring engagement is It is also possible to prevent the arm portion 61 of the switching spring 60 from coming off the portion 56 .

The spring engaging portion 56 of the spring shaft portion 55 described above is formed of a cylinder extending radially outward of the second cylindrical portion 12. For example, as shown in FIGS. A pair of semi-cylinders 156A and 156B obtained by halving a cylinder extending radially outward of the tubular portion 12 may constitute the spring engaging portion of the spring shaft portion 55. As shown in FIG. At this time, the semi-cylinders 156A and 156B are preferably spaced apart from each other. In the example shown in FIGS. 11 and 12, the semi-cylinders 156A and 156B are spaced apart in the X direction. By configuring the spring engaging portion with such semi-cylinders 156A and 156B, when the arm portion 61 of the switching spring 60 is attached to the spring shaft portion 55, the semi-cylinders 156A and 156B are elastically deformed in a direction toward each other. Therefore, it becomes easy to attach the arm portion 61 of the switching spring 60 to the spring shaft portion 55 .

In this case, it is preferable that the spring shaft portion 55 has projecting portions 157A and 157B that extend in opposite directions from the ends of the semi-cylinders 156A and 156B, respectively. In this way, by extending the protruding portions 157A and 157B from the ends of the semi-cylinders 156A and 156B in opposite directions, it is possible to prevent the arm portion 61 of the switching spring 60 from coming off the spring engagement portion. can be effectively prevented. In this case, as shown in FIG. 12, it is preferable that the direction in which the projecting portions 157A and 157B extend coincides with the direction in which the groove 16 of the first tubular portion 11 extends. By making the extending direction of the protruding portions 157A and 157B and the extending direction of the groove 16 of the first cylindrical portion 11 the same direction, the spring shaft portion 55 of the second cylindrical portion 12 is aligned with the direction of the first cylindrical portion. When moving inside the groove 16 of the portion 11, the projecting portions 157A and 157B of the spring shaft portion 55 are prevented from colliding and interfering with the first cylindrical portion 11. FIG.

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. The second lens barrel unit has a protrusion that protrudes radially outward. The lens barrel has a switching spring bridged between the spring shaft portion formed in the first lens barrel unit and the projection portion of the second lens barrel unit. When the projection of the second lens barrel unit is positioned on the side of the retraction direction opposite to the extending direction from the reference position, the switching spring moves the projection of the second lens barrel unit. When the projecting portion of the second lens barrel unit is biased in the retracting direction and the projecting portion of the second lens barrel unit is located on the extension direction side of the reference position, the projecting portion of the second lens barrel unit is extended. It is rotatable about the spring shaft portion so as to bias it in the direction. The spring shaft portion of the first lens barrel unit extends radially outward, includes a spring engaging portion with which the switching spring is engaged, and the spring engaging portion extends from a tip of the spring engaging portion. and an overhang extending in a direction perpendicular to the direction.

With such a configuration, if the protrusion of the second lens barrel unit is positioned on the retraction direction side of the reference position in the retracted state, the switching spring is applied when the lens barrel extends forward from the retracted state. The second lens barrel unit does not move in the extending direction unless a force exceeding the retraction direction component of the urging force of (1) acts on the second lens barrel unit. Therefore, even if some force acts on the second lens barrel unit, the second lens barrel unit can maintain the first position, and the first photographing state can be realized. Further, when the second lens barrel unit is pulled forward with a force exceeding the component of the biasing force of the switching spring in the retracting direction, the biasing direction of the switching spring is reversed, and the projection of the second lens barrel unit has a switching spring. A force acts in the feeding direction from the Thereby, the second lens barrel unit can be moved to the second position, and the second shooting 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.

In addition, since the spring shaft portion of the first lens barrel unit has an overhanging portion extending in a direction perpendicular to the direction in which the spring engaging portion extends from the tip of the spring engaging portion, the first mirror When the switching spring is bridged between the spring shaft of the barrel unit and the projection of the second lens barrel unit, the projecting portion prevents the switching spring from coming off the spring engaging portion. Assembly of the lens barrel is facilitated.

The spring engaging portion may be formed of a cylinder extending radially outward of the first lens barrel unit.

Alternatively, the spring engaging portion may be composed of a pair of semi-cylinders obtained by halving a cylinder extending radially outward of the first lens barrel unit. At this time, the pair of semi-cylinders are spaced apart from each other. By configuring the spring engaging portion with such a pair of semi-cylinders, when the switching spring is attached to the spring shaft, these half-cylinders can be elastically deformed in a direction toward each other. It becomes easy to attach the switching spring to. In this case, if the projecting portions extend in opposite directions from the ends of the pair of semi-cylinders, the switching spring will be disengaged from the spring engaging portion by these projecting portions. can be prevented more effectively.

The first lens barrel unit includes a first cylindrical portion that is radially inside the barrel portion and is movable forward with respect to the barrel portion, and a second cylindrical portion that includes the spring shaft portion. You can The second tubular portion is radially inside the first tubular portion and is movable forward with respect to the first tubular portion. A groove extending along the optical axis direction may be formed in the inner peripheral surface of the first cylindrical portion. It is preferable that the projecting portion of the spring shaft portion of the second cylindrical portion extends in a direction along the optical axis and is positioned inside the groove of the first cylindrical portion. With such a configuration, when the spring shaft portion of the second cylindrical portion moves inside the groove of the first cylindrical portion, the projecting portion of the spring shaft portion collides with and interferes with the first cylindrical portion. can be prevented.

The first lens barrel unit preferably has at least one elastic piece that is elastically deformable. In this case, the at least one elastic piece may have a projecting portion that engages with the projecting portion of the second lens barrel unit to hold the second lens barrel unit at the first position. preferable. With such a configuration, even when a force exceeding the retraction direction component of the biasing force of the switching spring acts on the second lens barrel unit, the projecting portion of the elastic piece acts on the projecting portion of the second lens barrel unit. Because of the engagement, a certain amount of force is required to move the second lens barrel unit in the extension direction. Therefore, even if some force acts on the second lens barrel unit, the second lens barrel unit can maintain the first position.

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 16 groove 20 frame 21 base portion 22 barrel portion 24 guide groove 31 rear barrel unit (first barrel unit)
32 front barrel unit (second barrel unit)
41 projection 42 guide claw 51 guide groove 52 elastic piece 53 projection 55 spring shaft 56, 156A, 156B spring engaging portion 57, 157A, 157B projecting portion 60 switching spring 61, 62 arm

Claims (6)

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 second lens barrel unit having a protrusion projecting radially outward;
A switching spring bridged between a spring shaft formed in the first lens barrel unit and the projection of the second lens barrel unit, the projection of the second lens barrel unit is positioned on the side of the retraction direction opposite to the extending direction from the reference position, the protrusion of the second lens barrel unit is biased in the retraction direction, and the second lens barrel unit is retracted. When the projection is located on the extension direction side of the reference position, the projection of the second lens barrel unit is rotatable about the spring shaft so as to bias the projection in the extension direction. a switching spring and
The spring shaft portion of the first barrel unit is
a spring engaging portion extending radially outward and engaged with the switching spring;
a projecting portion extending in a direction perpendicular to the direction in which the spring engaging portion extends from the tip of the spring engaging portion;
camera equipment. 2. The camera device according to claim 1, wherein said spring engaging portion is formed of a cylinder extending radially outward of said first lens barrel unit. The spring engaging portion is a pair of semi-cylinders formed by halving a cylinder extending outward in the radial direction of the first lens barrel unit, the pair of semi-cylinders being spaced apart from each other. 2. The camera device of claim 1, wherein 4. The camera device according to claim 3, wherein said protruding portions are configured to extend from respective ends of said pair of semi-cylinders in opposite directions. The first lens barrel unit is
a first tubular portion radially inside the barrel portion and movable forward relative to the barrel portion;
a second cylindrical portion including the spring shaft portion, the second cylindrical portion being radially inside the first cylindrical portion and movable forward with respect to the first cylindrical portion;
A groove extending along the optical axis direction is formed on the inner peripheral surface of the first cylindrical portion,
the projecting portion of the spring shaft portion of the second cylindrical portion extends in a direction along the optical axis and is positioned inside the groove of the first cylindrical portion;
A camera device according to any one of claims 1 to 3. The first lens barrel unit has at least one elastic piece that is elastically deformable,
the at least one elastic piece has a protrusion that engages with the protrusion of the second lens barrel unit to hold the second lens barrel unit in the first position;
A camera device according to any one of claims 1 to 5.

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