Camera device and select switch

Abstract

SOLUTION: A camera device 1 comprises a lens 90 for forming an image of a subject in an imaging region on a photographic film, and aperture blades 21-23 arranged in front of the lens 90. The aperture blades 21-23 are constituted to be movable between an aperture position where vignetting is made to occur at an edge of the imaging region and an open position radially outward from the aperture position. The camera device 1 further comprises a select switch 30 including an operation lever 50 movable by operation of a user, and an actuation lever 70 connected to the aperture blades 21-23 for moving the aperture blades 21-23 between the aperture position and the open position along the movement of the operation lever 50. The operation lever 50 is constituted to be movable in the circumferential direction centering around an optical axis P, and the actuation lever 70 is constituted to be rotatable around an axis 64. A cam groove 56 extending along the circumferential direction between an inside part 56A and an outside part 56B is formed on the operation lever 50. The actuation lever 70 includes a follower part 76 capable of moving inside of the cam groove 56 while being engaged with the cam groove 56.SELECTED DRAWING: Figure 10A

Description

[Technical field]

[0001] The present invention relates to a camera device. [Background technology]

[0002] Generally, cameras are often provided with an aperture for capturing an image under optimal exposure conditions (see, for example, Patent Document 1). Conventionally, such apertures have been used to adjust the amount of light, and have not been used to add aesthetic or artistic effects to a captured image, for example. With digital photography, it is possible to add aesthetic or artistic effects to an image by modifying the data after capture, but in the case of analog photography in particular, such post-editing is not possible, and so there is a demand for technology that can obtain images with added aesthetic or artistic effects. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-133627 A Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention has been made in consideration of the problems with the conventional technology, and aims to provide a camera device that can easily capture images with added aesthetic and / or artistic effects, and a changeover switch for use in such a camera device. [Means for solving the problem]

[0005] According to one aspect of the present invention, there is provided a camera device that can easily capture an image with added aesthetic and / or artistic effects. The camera device includes at least one lens that forms an image of a subject on an imaging area on a photographic film, and an aperture blade disposed in front of the at least one lens. The at least one aperture blade is configured to be movable between an aperture position that generates vignetting at the periphery of the imaging area and an open position radially outward of the aperture position. The camera device further includes a changeover switch including an operation lever that can be moved by a user's operation, and an actuation lever that is connected to the at least one aperture blade and moves the at least one aperture blade between the aperture position and the open position in accordance with the movement of the operation lever.

[0006] According to another aspect of the present invention, there is provided a changeover switch having a simple structure, which can easily change the switching state by moving an operating lever in a circumferential direction. The changeover switch includes a base, an operating lever movable in a circumferential direction on the base around a first axis, an operating lever rotatable around a second axis, and a cam mechanism that converts the movement of the operating lever into a rotation of the operating lever. The cam mechanism includes a cam groove provided on one of the operating lever and the operating lever, and a follower portion provided on the other of the operating lever and the operating lever, which is movable within the cam groove while engaging with the cam groove. The changeover switch further includes a force applying portion that applies a force to the follower portion of the cam mechanism. The cam groove of the cam mechanism includes an inner portion and an outer portion located radially outward of the inner portion with respect to the first axis, and extends along the circumferential direction between the inner portion and the outer portion. The follower portion of the cam mechanism is movable between a first follower position located on the inner side of the cam groove and a second follower position located on the outer side of the cam groove. The force application portion is configured to push the follower portion toward the first follower position when the follower portion of the cam mechanism is located on the first follower position side of a reference follower position, and to push the follower portion toward the second follower position when the follower portion of the cam mechanism is located on the second follower position side of the reference follower position.

[0007] According to yet another aspect of the present invention, there is provided a camera device including the above-mentioned changeover switch. Effect of the Invention

[0008] According to the present invention, the user can move the aperture blades between the stopped-down position and the open position by operating the operation lever of the changeover switch. When the aperture blades are in the stopped-down position, vignetting occurs at the periphery of the imaging area of ​​the photographic film, so that the periphery of the captured image can be darkened. This makes it possible to take a photograph with an aesthetic and / or artistic effect that makes the center area stand out more, i.e., a vignette effect. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing a camera device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view showing an inner cylinder portion of the camera device shown in FIG. [Diagram 3] FIG. 3 is an exploded perspective view of some of the components in the inner cylindrical portion shown in FIG. [Figure 4] FIG. 4 is a plan view showing components constituting a changeover switch extracted from the components of the inner cylinder portion shown in FIG. [Figure 5A] 5A is a perspective view of an operating lever in the cylindrical portion shown in FIG. [Figure 5B] FIG. 5B is a plan view of the operating lever shown in FIG. 5A. [Figure 5C] FIG. 5C is a bottom view of the operating lever shown in FIG. 5A. [Figure 6] FIG. 6 is a perspective view of the actuating lever shown in FIG. [Figure 7] FIG. 7 is a perspective view of the first base plate shown in FIG. [Figure 8] 8 is a partial cross-sectional view of the operating lever, the first base plate, and the operating lever shown in FIG. 3, taken along a plane perpendicular to the optical axis so as to include the rail portion and the extension portion of the operating lever. [Figure 9] FIG. 9 is a plan view of the contact shown in FIG. [Figure 10A] FIG. 10A is a diagram showing a schematic diagram of the relationship between the components when the aperture blades of the inner barrel portion shown in FIG. 2 are at the aperture position. [Figure 10B] FIG. 10B is a diagram showing a schematic diagram of the relationship between the components when the aperture blades of the inner barrel portion shown in FIG. 2 are located between the aperture position and the open position. [Figure 10C] FIG. 10C is a diagram showing a schematic diagram of the relationship between the components when the aperture blades of the inner barrel portion shown in FIG. 2 are in the open position. [Figure 11]FIG. 11 is a plan view showing an operating lever in another embodiment of the present invention. [Figure 12] FIG. 12 is a graph showing the relationship between the rotation angle of the operating lever and the moving distance of the contact when the operating lever shown in FIG. 11 is used. [Figure 13] FIG. 13 is a graph showing the relationship between the rotation angle of the operating lever and the moving distance of the contact when the operating lever shown in FIG. 5B is used. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of a camera device according to the present invention will be described in detail with reference to Figs. 1 to 13. In Figs. 1 to 13, identical or corresponding components are denoted with the same reference numerals, and duplicated explanations will be omitted. In addition, in Figs. 1 to 13, 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 do not indicate a specific order or sequence.

[0011] 1 is a perspective view showing a camera device 1 in one embodiment of the present invention. The camera device 1 in this embodiment is a camera (instant camera) that uses photographic film that is automatically developed after shooting, but it goes without saying that the present invention can be applied to cameras other than instant cameras. Note that in this embodiment, for convenience, the direction toward the subject along the optical axis (+Z direction in FIG. 1) will be referred to as "front" or "forward," and the direction toward the camera device 1 (-Z direction) will be referred to as "rear" or "rearward."

[0012] 1, the camera device 1 includes a front cover 2, a rear cover 3 attached to the rear of the front cover 2, a top cover 4 sandwiched between the front cover 2 and the rear cover 3, and a lens barrel 5 housing a lens unit therein. A viewfinder window 6 is formed in the front cover 2, and a flash window 7 is disposed adjacent to the viewfinder window 6. A release button 8 is disposed on the -Y side of the viewfinder window 6. An ejection slit 4A extending in the X direction is formed in the top cover 4, and the photographic film developed after exposure is ejected from the ejection slit 4A.

[0013] The lens barrel 5 has an outer tube portion 10, an operation ring 11 that covers the outer periphery of the outer tube portion 10, and an inner tube portion 12 that can be extended in the axial direction radially inside the outer tube portion 10. The operation ring 11 is rotatable outside the outer tube portion 10, and by rotating the operation ring 11 relative to the outer tube portion 10, the inner tube portion 12 is extended forward by an extension mechanism (not shown).

[0014] FIG. 2 is a perspective view showing the inner cylinder part 12. As shown in FIG. 2, the inner cylinder part 12 includes a cylindrical cylinder body 14, an annular cover plate 16 attached to the front of the cylinder body 14, three diaphragm blades 21 to 23, a changeover switch 30 capable of changing the positions of the diaphragm blades 21 to 23 between the diaphragm position and the open position, and one or more lenses 90 for forming an image of a subject on an imaging area on a photographic film. FIG. 2 shows a state in which the diaphragm blades 21 to 23 are set to the diaphragm position by the changeover switch 30. The inner cylinder part 12 also includes diaphragm blades (not shown) for adjusting the amount of light projected on the imaging area on the photographic film. The diaphragm blades 21 to 23 in this embodiment are used to darken the periphery of the imaging area on the photographic film, and are different from the diaphragm blades (not shown) used for adjusting the amount of light projected on the imaging area.

[0015] FIG. 3 is an exploded perspective view of some components in the inner cylinder 12. As shown in FIG. 3, the inner cylinder 12 includes a first base plate 40 (base) having a substantially disk shape, a front panel 18 disposed between the first base plate 40 and the cover plate 16, a pair of barrier blades 19A, 19B disposed in a space formed between the first base plate 40 and the front panel 18, an operating lever 50 disposed between the first base plate 40 and the cover plate 16, a second base plate 60 disposed behind the first base plate 40, an operating lever 70 disposed in a space formed between the first base plate 40 and the second base plate 60, and a force applying portion 80 that applies a force to the operating lever 70. The above-mentioned diaphragm blades 21 to 23 are disposed in a space formed between the first base plate 40 and the second base plate 60. The second base plate 60 has shafts 61 to 64 extending in the +Z direction.

[0016] Before shooting, the barrier blades 19A, 19B are in contact with each other as shown in Fig. 1 to prevent external light from entering the lens (not shown) in the inner cylinder portion 12, but during shooting, they are moved away from each other by a drive mechanism (not shown), so that external light passes through the opening 18A of the front panel 18 and enters the lens in the inner cylinder portion 12. Figures 2 and 3 show the state during shooting, in which the barrier blades 19A, 19B are moved to positions separated from each other.

[0017] The changeover switch 30 in this embodiment includes a part of the first base plate 40, an operating lever 50, an actuating lever 70, and a force applying section 80. Fig. 4 is a plan view showing components constituting the changeover switch 30 extracted from the components of the inner cylinder section 12 shown in Fig. 2. As shown in Fig. 4, the operating lever 50 of the changeover switch 30 is disposed near the peripheral edge of the first base plate 40. This operating lever 50 is configured to be movable in the circumferential direction around the optical axis P (first axis) by a user's operation, as described later.

[0018] Fig. 5A is a perspective view of the operating lever 50, Fig. 5B is a plan view, and Fig. 5C is a bottom view. As shown in Fig. 4 and Figs. 5A to 5C, the operating lever 50 has an arc-shaped plate portion 51 extending along an arc centered on the optical axis P when the operating lever 50 is placed on the first base plate 40, an operating protrusion 52 protruding in the +Z direction from the arc-shaped plate portion 51, a rail portion 53 extending along an arc similar to that of the arc-shaped plate portion 51 on the -Z direction side of the arc-shaped plate portion 51, and an extension portion 54 extending in a plate shape from the rail portion 53. Note that an unevenness is formed on the tip of the operating protrusion 52 to facilitate the operation of the operating lever 50.

[0019] The arc-shaped plate portion 51 has a raised portion 51A on its front surface that rises in the +Z direction, and a raised portion 51B on its rear surface that rises in the -Z direction. These raised portions 51A, 51B come into contact with the cover plate 16 and the first base plate 40, respectively, and serve to reduce friction between the operating lever 50 and these plates 16, 40. In addition, a mark 51C is formed on the front surface of the arc-shaped plate portion 51, which indicates that the aperture blades 21 to 23 are in the aperture position.

[0020] As shown in FIG. 3, a window 17 extending in an arc shape is formed in the cover plate 16 located in front of the operating lever 50, and as shown in FIG. 1, an operating protrusion 52 of the operating lever 50 is located inside this window 17. Also, the mark 51C on the arc-shaped plate portion 51 is visible to the outside through the window 17 of the cover plate 16 in the state shown in FIG. 1, that is, in the state in which the diaphragm blades 21 to 23 are in the aperture position, and is hidden behind the cover plate 16 when the operating lever 50 is moved in the circumferential direction (when the diaphragm blades 21 to 23 are in the open position) as described later. Therefore, the user can know that the diaphragm blades 21 to 23 are in the aperture position by checking the mark 51C of the operating lever 50.

[0021] 5C, the rail portion 53 of the operating lever 50 has thickened portions 57A, 57B at both ends that protrude radially outward. The rail portion 53 also has a raised portion 53A that rises in the -Z direction on the rear surface. The raised portion 53A comes into contact with the first base plate 40 to reduce friction between the operating lever 50 and the first base plate 40.

[0022] As shown in Figures 4 and 5A to 5C, a cam groove 56 is formed in the expansion portion 54 of the operating lever 50. This cam groove 56 includes an inner portion 56A located radially inward with respect to the optical axis P, and an outer portion 56B located radially outward of the inner portion 56A with respect to the optical axis P. The cam groove 56 extends along the circumferential direction as a whole between the inner portion 56A and the outer portion 56B. The shape of this cam groove 56 is determined based on the relationship between the rotation angle of the operating lever 70 and the force applied to the operating lever 70 by the force application portion 80, as will be described later.

[0023] Returning to FIG. 3, the diaphragm blade 21 has a circular hole 21A and an elongated hole 21B, the diaphragm blade 22 has a circular hole 22A and an elongated hole 22B, and the diaphragm blade 23 has a circular hole 23A and an elongated hole 23B. The shaft 61 of the second base plate 60 is inserted into the circular hole 21A of the diaphragm blade 21, and the shaft 61 is received by the circular hole 21A of the diaphragm blade 21, so that the diaphragm blade 21 can rotate around the shaft 61. Similarly, the shaft 62 of the second base plate 60 is inserted into the circular hole 22A of the diaphragm blade 22, so that the diaphragm blade 22 can rotate around the shaft 62. Also, the shaft 63 of the second base plate 60 is inserted into the circular hole 23A of the diaphragm blade 23, so that the diaphragm blade 23 can rotate around the shaft 63.

[0024] FIG. 6 is a perspective view of the actuating lever 70. As shown in FIG. 6, the actuating lever 70 includes a shaft portion 72 having a shaft hole 71 extending in the Z direction, a first arm portion 73 extending from the shaft portion 72, a cylindrical actuating portion 74 extending in the +Z direction from an end of the first arm portion 73, a second arm portion 75 extending from the shaft portion 72 in a direction different from that of the first arm portion 73, and a follower portion 76 extending in the +Z direction from an end of the second arm portion 75. The shaft 64 (see FIG. 3) of the second base plate 60 is inserted into the shaft hole 71 of the shaft portion 72. In this way, the shaft 64 is received by the shaft hole 71 of the shaft portion 72, so that the actuating lever 70 can rotate around the shaft 64 (second shaft). The follower portion 76 includes a large diameter portion 77 having a relatively large diameter, and a small diameter portion 78 that is located on the +Z direction side of the large diameter portion 77 and has a smaller diameter than the large diameter portion 77.

[0025] The actuating portion 74 of the actuating lever 70 is inserted into the long holes 21B-23B of the diaphragm blades 21-23. The outer diameter of the actuating portion 74 is slightly smaller than the width of each of the long holes 21B-23B (the width along the direction perpendicular to the extension direction of the long holes 21B-23B), and the actuating portion 74 is adapted to move within each of the long holes 21B-23B while engaging with each of the long holes 21B-23B of the diaphragm blades 21-23. Therefore, when the actuating lever 70 rotates around the shaft 64, the actuating portion 74 applies a force to the diaphragm blades 21-23 by engaging with the long holes 21B-23B while moving within the long holes 21B-23B of the diaphragm blades 21-23, causing the diaphragm blades 21-23 to rotate around the shafts 61-63, respectively. In this manner, the diaphragm blades 21 to 23 are connected to the operating lever 70 via the operating portion 74, and rotate around the respective shafts 61 to 63 (rotation shafts) as the operating lever 70 rotates.

[0026] 7 is a perspective view of the first base plate 40. As shown in FIGS. 4 and 7, the first base plate 40 has an outer wall 41 having an inner circumferential surface 41A along an arc centered on the optical axis P (first axis), a first inner wall 42 having an outer circumferential surface 42A along an arc centered on the optical axis P on the radial inner side of the outer wall 41, a first support portion 43 located between the outer wall 41 and the first inner wall 42, a second inner wall 44 having an outer circumferential surface 44A along an arc centered on the optical axis P on the radial inner side of the first inner wall 42, a second support portion 45 located between the outer wall 41 and the second inner wall 44, and a spring fixing portion 46 protruding from the first support portion 43 in a direction along an axis Q (third axis) perpendicular to the optical axis P. An opening 49 is formed in the center of the first base plate 40. Further, the outer wall 41 has stopper portions 41B and 41C protruding radially inward from the inner circumferential surface 41A.

[0027] The second support portion 45 has an arc groove 48 formed therein, which extends along an arc centered on the axis 64 of the second base plate 60. A follower portion 76 of the operating lever 70 shown in FIG. 6 is inserted into this arc groove 48 from the rear (−Z direction side) of the first base plate 40, and the follower portion 76 moves inside the arc groove 48 as the operating lever 70 rotates about the axis 64.

[0028] The first support part 43 and the second support part 45 have the same height in the Z direction, and a recess 47 is formed between the first support part 43 and the second support part 45. The spring fixing part 46 described above is located in this recess 47.

[0029] The above-mentioned operating lever 50 is disposed on the +Z direction side of the first support part 43 and the second support part 45. More specifically, the operating lever 50 is disposed on the +Z direction side of the first base plate 40 such that a part of the rail part 53 of the operating lever 50 is located on the +Z direction side of the first support part 43, and the extension part 54 and a part of the rail part 53 of the operating lever 50 are located on the +Z direction side of the second support part 45.

[0030] 8 is a partial cross-sectional view of the operating lever 50, the first base plate 40, and the actuating lever 70 cut along a plane perpendicular to the optical axis P so as to include the rail portion 53 and the extension portion 54 of the operating lever 50. As shown in Figs. 4 and 8, the large diameter portion 77 of the follower portion 76 of the actuating lever 70 is located inside the arc groove 48 of the first base plate 40, and the small diameter portion 78 of the follower portion 76 is adapted to protrude from the arc groove 48 in the +Z direction and to be located inside the cam groove 56 of the operating lever 50 arranged on the +Z direction side of the second support portion 45.

[0031] The outer diameter of the small diameter portion 78 of the follower portion 76 of the operating lever 70 is slightly smaller than the width of the cam groove 56 of the operating lever 50 (the width along the direction perpendicular to the direction in which the cam groove 56 extends), and the small diameter portion 78 is capable of moving within the cam groove 56 while engaging with the cam groove 56 of the operating lever 50.

[0032] As shown in Fig. 8, the thick portion 57A of the rail portion 53 of the operating lever 50 is sandwiched between the inner peripheral surface 41A of the outer wall 41 of the first base plate 40 and the outer peripheral surface 42A of the first inner wall 42, and is guided by the inner peripheral surface 41A of the outer wall 41 and the outer peripheral surface 42A of the first inner wall 42. The thick portion 57B of the rail portion 53 of the operating lever 50 is in contact with the inner peripheral surface 41A of the outer wall 41 of the first base plate 40, and the extension portion 54 is in contact with the outer peripheral surface 44A of the second inner wall 44. That is, the extension portion 54 and the thick portion 57B of the operating lever 50 are sandwiched between the inner peripheral surface 41A of the outer wall 41 of the first base plate 40 and the outer peripheral surface 44A of the second inner wall 44, and are guided by the inner peripheral surface 41A of the outer wall 41 and the outer peripheral surface 44A of the second inner wall 44. With this configuration, the operating lever 50 can move in the circumferential direction around the optical axis P. Hereinafter, in Fig. 8, the direction in which the operating lever 50 moves clockwise around the optical axis P is referred to as the "open direction," and the direction in which the operating lever 50 moves counterclockwise around the optical axis P is referred to as the "close direction."

[0033] 8, a force application portion 80 is housed in the recess 47 between the first support portion 43 and the second support portion 45 of the first base plate 40. The force application portion 80 includes a contact 81 that is movable along an axis Q (see FIG. 7) within the recess 47, and a coil spring 82 as a biasing portion that biases the contact 81 in a direction along the axis Q.

[0034] Fig. 9 is a plan view of the contact 81. As shown in Fig. 9, the contact 81 includes a pentagonal prism-shaped contact body 83 and a spring fixing portion 84 extending from the contact body 83 in a direction along the axis Q. The contact body 83 has a rounded top portion 85 and inclined portions 86 and 87 extending on both sides from the top portion 85. The top portion 85 and the inclined portions 86 and 87 of the contact body 83 are configured to come into contact with the large diameter portion 77 of the follower portion 76 of the actuating lever 70 located in the arc groove 48.

[0035] The spring fixing portion 84 of the contactor 81 is inserted into one end of the coil spring 82, and the spring fixing portion 46 (see FIG. 7) of the first base plate 40 is inserted into the other end. As a result, the coil spring 82 is fixed in a compressed state between the contactor body 83 and the first support portion 43 of the first base plate 40. The contactor 81 is biased in the direction along the axis Q by the coil spring 82, so that the top portion 85 and any of the inclined portions 86, 87 come into contact with the large diameter portion 77 of the follower portion 76 of the operating lever 70 to press the follower portion 76.

[0036] 10A to 10C are diagrams showing the relationship between the components in each state of the changeover switch 30. Fig. 10A shows a state in which the diaphragm blades 21 to 23 are switched to the throttling position by the changeover switch 30, that is, the state when the changeover switch 30 is in the state shown in Figs. 4 and 8, Fig. 10B shows a state in which the diaphragm blades 21 to 23 are in the middle of being switched from the throttling position to the open position or in the middle of being switched from the open position to the throttling position by the changeover switch 30, and Fig. 10C shows a state in which the diaphragm blades 21 to 23 are switched to the open position by the changeover switch 30. As shown in Figs. 10A and 10C, the open position of each of the diaphragm blades 21 to 23 is located radially outward of the throttling position.

[0037] As shown in FIG. 10A, when the aperture blades 21-23 are in the aperture position, a part of the aperture blades 21-23 protrudes inward from the edge of the opening 49 of the first base plate 40, and the light beam entering the lens inside the inner tube portion 12 is blocked by the protruding part of the aperture blades 21-23. The protruding part of the aperture blades 21-23 causes vignetting at the periphery of the imaging area of ​​the photographic film, and the periphery of the captured image is darkened. This makes it possible to take a photograph with an aesthetic and / or artistic effect that makes the center area more prominent, that is, a vignette effect. In this state, the small diameter part 78 of the follower part 76 of the operating lever 70 is located at the inner part 56A of the cam groove 56 of the operating lever 50. The position of the operating lever 70 at this time is called the "first operating lever position", and the position of the follower part 76 is called the "first follower position".

[0038] When a user operates the operation protrusion 52 (see FIG. 1) of the operation lever 50 located inside the window 17 of the cover plate 16 to move the operation lever 50 in the opening direction from the state shown in FIG. 10A, the small diameter portion 78 of the follower portion 76 that engages with the cam groove 56 of the operation lever 50 moves along the shape of the cam groove 56, and accordingly the operating lever 70 rotates counterclockwise around the shaft 64. As described above, since the operating portion 74 of the operating lever 70 engages with the long holes 21B-23B of the diaphragm blades 21-23, the counterclockwise rotation of the operating lever 70 causes the diaphragm blade 21 to rotate clockwise around the shaft 61, the diaphragm blade 22 to rotate clockwise around the shaft 62, and the diaphragm blade 23 to rotate counterclockwise around the shaft 63.

[0039] 10A, when the follower portion 76 of the actuating lever 70 is located at the first follower position, the large diameter portion 77 of the follower portion 76 is in contact with the inclined portion 86 of the contactor 81. Since the contactor 81 is biased by the coil spring 82 as described above, the follower portion 76 is pushed by the inclined portion 86 of the contactor 81 in a direction rotating clockwise about the shaft 64 (see arrow F1). Since the small diameter portion 78 of the follower portion 76 is engaged with the cam groove 56 of the operating lever 50, the follower portion 76 is pushed clockwise, so that a force in the closing direction acts on the operating lever 50. Therefore, when no external force is applied to the operating lever 50, a force in the closing direction is applied to the operating lever 50 by the coil spring 82, and the thick portion 57A of the rail portion 53 of the operating lever 50 abuts against the stopper portion 41B (see FIG. 8) of the first base plate 40, thereby maintaining the circumferential position of the operating lever 50. In this manner, the stopper portion 41B of the first base plate 40 serves to restrict the movement of the operating lever 50 in the closing direction. The position of the operating lever 50 at this time is referred to as the "first operating lever position."

[0040] In the state shown in Fig. 10A, since a force in the closing direction is applied to the operating lever 50 by the coil spring 82 as described above, when the user moves the operating lever 50 in the opening direction, it is necessary to apply a force to the operating lever 50 that exceeds the force in the closing direction by the coil spring 82. When the user applies a force to the operating lever 50 that exceeds the force in the closing direction by the coil spring 82 and moves the operating lever 50 in the opening direction from the state shown in Fig. 10A, the contact portion between the large diameter portion 77 of the follower portion 76 of the actuating lever 70 and the contactor 81 moves from the inclined portion 86 toward the apex 85.

[0041] 10B shows a state in which the contact portion between the large diameter portion 77 of the follower portion 76 and the contactor 81 has moved to the apex 85. The position of the follower portion 76 at this time is referred to as the "reference follower position." The follower portion 76 in the reference follower position is located on the axis Q, and in this position, the coil spring 82 does not apply a moment to the operating lever 70.

[0042] When the user further moves the operating lever 50 in the closing direction from the state shown in Figure 10B, as described above, the small diameter portion 78 of the follower portion 76 moves along the shape of the cam groove 56 of the operating lever 50, and as a result, the operating lever 70 rotates counterclockwise around the axis 64, and each of the aperture blades 21-23 rotates to the open position shown in Figure 10C via the operating portion 74 of the operating lever 70.

[0043] As shown in Fig. 10C, when the diaphragm blades 21-23 are in the open position, the diaphragm blades 21-23 are located outside the edge of the opening 49 of the first base plate 40, and the light rays incident on the lens inside the inner tube portion 12 are not blocked by the diaphragm blades 21-23. In this state, the small diameter portion 78 of the follower portion 76 of the actuating lever 70 is located at the outer portion 56B of the cam groove 56 of the operating lever 50. The position of the actuating lever 70 at this time is referred to as the "second actuating lever position," and the position of the follower portion 76 is referred to as the "second follower position."

[0044] 10C, when the follower portion 76 of the actuating lever 70 is located at the second follower position, the large diameter portion 77 of the follower portion 76 is in contact with the inclined portion 87 of the contactor 81. Since the contactor 81 is biased by the coil spring 82 as described above, the follower portion 76 is pushed by the inclined portion 87 of the contactor 81 in a direction rotating counterclockwise about the shaft 64 (see arrow F2). Since the small diameter portion 78 of the follower portion 76 is engaged with the cam groove 56 of the operating lever 50, the follower portion 76 is pushed in the direction rotating counterclockwise, so that a force in the opening direction acts on the operating lever 50. Therefore, when no external force is applied to the operating lever 50, a force in the opening direction is applied to the operating lever 50 by the coil spring 82, and the thick portion 57B of the rail portion 53 of the operating lever 50 abuts against the stopper portion 41C (see FIG. 8) of the first base plate 40, thereby maintaining the circumferential position of the operating lever 50. In this manner, the stopper portion 41C of the first base plate 40 serves to restrict the movement of the operating lever 50 in the opening direction. The position of the operating lever 50 at this time is referred to as the "second operating lever position."

[0045] As described above, when the user moves the operating lever 50 in the open direction from the first operating lever position shown in Fig. 10A, it is necessary to apply a force to the operating lever 50 that exceeds the force in the closing direction of the coil spring 82, but when the large diameter portion 77 of the follower portion 76 climbs over the apex 85 from the inclined portion 86 of the contactor 81 and comes into contact with the inclined portion 87, the force in the opening direction of the coil spring 82 acts on the operating lever 50, so that the operating lever 50 moves to the second operating lever position shown in Fig. 10C without the user applying any force to the operating lever 50. Therefore, the user can feel such a change in the force acting on the operating lever 50 (a clicking sensation).

[0046] When the user moves the operation lever 50 in the closing direction from the second operation lever position shown in FIG. 10C, the small diameter portion 78 of the follower portion 76 moves along the shape of the cam groove 56 of the operation lever 50, and accordingly the operating lever 70 rotates clockwise around the shaft 64, and each of the diaphragm blades 21 to 23 rotates via the operating portion 74 of the operating lever 70. At this time, since the force in the opening direction is applied to the operation lever 50 by the coil spring 82 as described above, when the user moves the operation lever 50 in the closing direction, it is necessary to apply a force to the operation lever 50 that exceeds the force in the opening direction by the coil spring 82 until the large diameter portion 77 of the follower portion 76 gets over the top portion 85 of the contact 81. After the large diameter portion 77 of the follower portion 76 gets over the top portion 85 of the contact 81, the force in the closing direction by the coil spring 82 is applied to the operation lever 50, so that the operation lever 50 moves to the first operation lever position shown in FIG. 10A even if the user does not apply a force to the operation lever 50. In this case as well, the user can feel a change in the force acting on the operating lever 50 (a clicking sensation).

[0047] As described above, in this embodiment, the inclined portion 86 of the contactor 81 functions as a first contact portion that contacts the large diameter portion 77 of the follower portion 76 located closer to the first follower position than the reference follower position, and is biased by the coil spring 82 to push the follower portion 76 in a clockwise rotation direction about the shaft 64. The inclined portion 87 of the contactor 81 functions as a second contact portion that contacts the large diameter portion 77 of the follower portion 76 located closer to the second follower position than the reference follower position, and is biased by the coil spring 82 to push the follower portion 76 in a counterclockwise rotation direction about the shaft 64.

[0048] In this embodiment, the inclined portions 86 and 87 of the contact 81 have shapes symmetrical to each other with respect to the apex 85, but the present invention is not limited to this. If the inclined portions 86 and 87 are symmetrical to each other with respect to the apex 85 as in this embodiment, a force acts on the operating lever 50 in the same manner in the operation of moving the operating lever 50 in the open direction from the first operating lever position (opening operation) and the operation of moving the operating lever 50 in the close direction from the second operating lever position (closing operation), so that both operations can be performed in a well-balanced manner. In addition, in this embodiment, as described above, the reference follower position is located on the axis Q, so that the opening operation and the closing operation can be performed in a better balance.

[0049] In this way, in the camera device 1 of this embodiment, the user can move the aperture blades 21 to 23 between the aperture position and the open position by operating the operation lever 50 of the changeover switch 30. By moving the aperture blades 21 to 23 to the aperture position, vignetting occurs at the periphery of the imaging area of ​​the photographic film, so that the periphery of the captured image becomes dark. This makes it possible to take a photograph with an aesthetic and / or artistic effect that makes the center area more prominent, that is, a vignette effect. As described above, in the case of digital photography, it is possible to add a vignette effect to a captured image by correcting the data after capture, but in the case of analog photography, post-editing is not possible, so the function of adding such a vignette effect is revolutionary, especially for a camera device that captures analog photography.

[0050] In addition, the follower portion 76 of the operating lever 70 is pushed toward the first follower position by the contact 81 when it is located closer to the first follower position than the reference follower position, and is pushed toward the second follower position by the contact 81 when it is located closer to the second follower position than the reference follower position, so that the large diameter portion 77 of the follower portion 76 of the operating lever 70 can be moved beyond the reference follower position by moving the operating lever 50, and the switching state of the aperture blades 21 to 23 can be easily switched, and the structure can be simplified. In addition, the user can feel the change in force acting on the operating lever 50 from the contact 81 before and after the follower portion 76 of the operating lever 70 passes the reference follower position, that is, a clicking sensation.

[0051] Here, the shape of the cam groove 56 of the operating lever 50 will be described. The cam groove 56 of the operating lever 50 of this embodiment has a shape such that the relationship between the rotation angle of the operating lever 70 about the axis 64 when the follower portion 76 of the operating lever 70 moves from the first follower position toward the reference follower position and the pushing distance of the contact 81 in the direction along the axis Q is the same as the relationship between the rotation angle of the operating lever 70 about the axis 64 when the follower portion 76 moves from the second follower position toward the reference follower position and the pushing distance of the contact 81 in the direction along the axis Q. By making the cam groove 56 have such a shape, the user can perform the operation of moving the operating lever 50 in the opening direction from the first operating lever position (opening operation) and the operation of moving the operating lever 50 in the closing direction from the second operating lever position (closing operation) in the same manner with the same force, and the operating feel of the operating lever 50 for the user can be improved.

[0052] For example, consider a case where the cam groove of the operating lever 50 is a cam groove 156 that extends linearly from an inner portion 156A to an outer portion 156B as shown in Figure 11. When the small diameter portion 78 of the follower portion 76 of the operating lever 70 moves along this type of cam groove 156, the relationship between the rotation angle of the operating lever 70 from the first operating lever position and the pushing distance of the contact 81 along the axis Q is determined by simulation, as shown in Figure 12.

[0053] 12, in the case of the cam groove 156 extending linearly, when the operating lever 70 rotates from the first operating lever position to the second operating lever position (opening operation of the operating lever 50), the pushing distance of the contact 81 increases gently (area A), and the force acting from the coil spring 82 to the operating lever 70 and the operating lever 50 also increases gently. On the other hand, when the operating lever 70 rotates from the second operating lever position to the first operating lever position (closing operation of the operating lever 50), the pushing distance of the contact 81 increases rapidly (area B), and the force acting from the coil spring 82 to the operating lever 70 and the operating lever 50 also increases rapidly. This means that a difference occurs in the force acting on the operating lever 50 between the opening operation and the closing operation of the operating lever 50, and a difference occurs in the operating feel of the operating lever 50.

[0054] The above-mentioned cam groove 56 is an improved shape of the cam groove 156 so that the operating lever 50 can be operated with the same operational feeling in either operation without causing such a difference in force. Specifically, as shown in Figs. 5B and 5C, the cam groove 56 is composed of a first groove portion 58A extending along a line connecting the inner portion 56A and the outer portion 56B, a second groove portion 58B connected to the first groove portion 58A and extending with a smaller radial change with respect to the circumferential direction than the first groove portion 58A, and a third groove portion 58C connected to the second groove portion 58B and extending with a larger radial change with respect to the circumferential direction than the first groove portion 58A and the second groove portion 58B. The first groove portion 58A corresponds to a part of the above-mentioned cam groove 156.

[0055] 13 shows the relationship between the rotation angle of the actuating lever 70 from the first actuating lever position and the push-in distance along the axis Q of the contact 81 when this cam groove 56 is used. The period during which the small diameter portion 78 of the follower portion 76 of the actuating lever 70 moves within the third groove portion 58C corresponds to region C, the period during which it moves within the second groove portion 58B corresponds to region D, and the period during which it moves within the first groove portion 58A corresponds to region E.

[0056] The shape of the third groove portion 58C is designed so that the change in the push-in distance of the contact 81 in region C is symmetrical with the change in the push-in distance of the contact 81 in region E (which can also be said to be the change in the push-in distance of the contact 81 in region B) with respect to the center of the rotation angle range of the actuating lever 70. In addition, the shape of the second groove portion 58B is designed so that the push-in distance of the contact 81 is constant. By making the cam groove 56 into such a shape, the change in the force acting from the coil spring 82 on the operating lever 50 when the operating lever 50 is opened matches the change in the force acting from the coil spring 82 on the operating lever 50 when the operating lever 50 is closed, so that the user can perform the opening and closing operations of the operating lever 50 with a similar operational feel.

[0057] The shape of the cam groove 56 in this embodiment is merely an example, and any shape may be used as long as the relationship between the rotation angle of the operating lever 70 and the movement distance (push-in distance) of the contact 81 when the operating lever 50 is opened is the same as the relationship between the rotation angle of the operating lever 70 and the movement distance (push-in distance) of the contact 81 when the operating lever 50 is closed.

[0058] In this embodiment, the follower portion 76 is divided into a large diameter portion 77 that is pressed by the contact 81 and a small diameter portion 78 that moves within the cam groove 56 of the operating lever 50, but the large diameter portion 77 and the small diameter portion 78 may be integrated.

[0059] As described above, in this embodiment, the cam groove 56 of the operating lever 50 and the follower portion 76 of the operating lever 70 constitute a cam mechanism that converts the movement of the operating lever 50 along the circumferential direction into rotation about the shaft 64 of the operating lever 70. Such a cam mechanism is not limited to the example shown in the figure, and for example, it is also possible to provide the operating lever 70 with a cam groove corresponding to the above-mentioned cam groove 56, provide the operating lever 50 with a follower portion corresponding to the above-mentioned follower portion 76, and constitute a cam mechanism by the cam groove of the operating lever 70 and the follower portion of the operating lever 50.

[0060] In addition, the changeover switch 30 in the above-mentioned embodiment is used to switch the aperture blades 21-23 between the throttling position and the open position, but is not limited thereto, and can be used for any purpose as long as it switches between two switching states. For example, the changeover switch 30 can also be used to drive blades other than the aperture blades 21-23. In addition, the camera device 1 in the above-mentioned embodiment uses three aperture blades 21-23 to generate vignetting in the captured image, but the number of such aperture blades is not limited to three, and it is sufficient that at least one aperture blade is provided.

[0061] The changeover switch 30 can also be used in devices other than the camera device 1. In various fields, a slide-type changeover switch in which an operating lever is slid linearly is widely used, and when the operating lever is slid linearly, the structure of the changeover switch can be relatively simple. However, when the operating lever needs to be slid in a circumferential direction, the structure of the changeover switch tends to be complicated. Therefore, if the changeover switch 30 described above is applied to a device in which the operating lever needs to be slid in a circumferential direction, it becomes possible to easily switch the switching state with a simple structure.

[0062] As described above, the camera device according to the present invention can employ the following configuration. [Configuration 1] at least one lens for imaging a subject onto an imaging area on a photographic film; At least one aperture blade is disposed in front of the at least one lens, and is configured to be movable between an aperture position that generates vignetting at a peripheral portion of the imaging area and an open position that is radially outward of the aperture position; a changeover switch including an operating lever movable by a user's operation and an actuating lever connected to the at least one diaphragm blade and moving the at least one diaphragm blade between the aperture position and the open position in accordance with the movement of the operating lever; A camera device comprising:

[0063] [Configuration 2] In the camera device of the above configuration 1, The above changeover switch is A base and A cam mechanism that converts the movement of the operating lever into the rotation of the actuating lever, a cam groove provided in one of the operating lever and the actuating lever; a follower portion provided on the other of the operating lever and the actuating lever, the follower portion being movable within the cam groove while engaging with the cam groove; A cam mechanism including: a force applying portion that applies a force to the follower portion of the cam mechanism; Further comprising: The operation lever of the changeover switch is configured to be movable on the base in a circumferential direction around a first axis, The actuating lever of the changeover switch is configured to be rotatable about a second shaft, The at least one diaphragm blade is configured to be rotatable around a rotation axis, The cam groove of the cam mechanism includes an inner portion and an outer portion located radially outward of the inner portion with respect to the first axis, and extends along the circumferential direction between the inner portion and the outer portion, the follower portion of the cam mechanism is movable between a first follower position located at the inner side of the cam groove and a second follower position located at the outer side of the cam groove; the force application portion is configured to push the follower portion toward the first follower position when the follower portion of the cam mechanism is located closer to the first follower position than a reference follower position, and to push the follower portion toward the second follower position when the follower portion of the cam mechanism is located closer to the second follower position than the reference follower position. Camera equipment.

[0064] [Configuration 3] In the camera device of configuration 2, The force application portion of the changeover switch is a contactor configured to move along a third axis to contact the follower portion of the cam mechanism; a biasing portion that biases the contact in a direction along the third axis; Including, Camera equipment.

[0065] [Configuration 4] In the camera device of the above configuration 3, A camera device, wherein the cam groove of the changeover switch has a shape such that the relationship between the rotation angle of the operating lever about the second axis and the movement distance of the contact in the direction along the third axis when the follower portion moves from the first follower position toward the reference follower position is the same as the relationship between the rotation angle of the operating lever about the second axis and the movement distance of the contact in the direction along the third axis when the follower portion moves from the second follower position toward the reference follower position.

[0066] [Configuration 5] In the camera device of the above configuration 4, The cam groove of the changeover switch is a first groove portion extending along a line connecting the inner portion and the outer portion; a second groove connected to the first groove and extending with a smaller radial change relative to the circumferential direction than the first groove; a third groove portion connected to the second groove portion and having a radial change with respect to the circumferential direction that is greater than the first groove portion and the second groove portion; A camera device comprising:

[0067] [Configuration 6] In any one of the camera devices according to the above configurations 3 to 5, A camera device, wherein the follower portion at the reference follower position is located on the third axis.

[0068] [Configuration 7] In any one of the camera devices according to the above configurations 3 to 6, The contact of the changeover switch is a first contact portion that contacts the follower portion located closer to the first follower position than the reference follower position; a second contact portion that contacts the follower portion located closer to the second follower position than the reference follower position, the second contact portion having a shape symmetrical to the first contact portion; A camera device having the following features:

[0069] [Configuration 8] In any one of the camera devices according to the above configurations 2 to 7, The base of the changeover switch has a stopper portion that restricts movement of the operating lever in the circumferential direction.

[0070] Moreover, the changeover switch according to the present invention can employ the following configuration. [Configuration 9] A base and an operating lever that is movable in a circumferential direction on the base portion around a first shaft; an actuation lever rotatable about a second axis; A cam mechanism that converts the movement of the operating lever into the rotation of the actuating lever, a cam groove provided in one of the operating lever and the actuating lever; a follower portion provided on the other of the operating lever and the actuating lever, the follower portion being movable within the cam groove while engaging with the cam groove; A cam mechanism including: a force applying portion that applies a force to the follower portion of the cam mechanism; Equipped with The cam groove of the cam mechanism includes an inner portion and an outer portion located radially outward of the inner portion with respect to the first axis, and extends along the circumferential direction between the inner portion and the outer portion, the follower portion of the cam mechanism is movable between a first follower position located at the inner side of the cam groove and a second follower position located at the outer side of the cam groove; the force application portion is configured to push the follower portion toward the first follower position when the follower portion of the cam mechanism is located closer to the first follower position than a reference follower position, and to push the follower portion toward the second follower position when the follower portion of the cam mechanism is located closer to the second follower position than the reference follower position. Switch.

[0071] [Configuration 10] In the changeover switch of the above configuration 9, The force application unit is a contactor configured to move along a third axis to contact the follower portion of the cam mechanism; a biasing portion that biases the contact in a direction along the third axis; Including, Switch.

[0072] [Configuration 11] In the changeover switch of the above configuration 10, A change-over switch, wherein the cam groove of the cam mechanism has a shape such that the relationship between the rotation angle of the operating lever about the second axis and the movement distance of the contactor in the direction along the third axis when the follower portion moves from the first follower position toward the reference follower position is the same as the relationship between the rotation angle of the operating lever about the second axis and the movement distance of the contactor in the direction along the third axis when the follower portion moves from the second follower position toward the reference follower position.

[0073] [Configuration 12] In the changeover switch of the above configuration 11, The cam groove of the cam mechanism is a first groove portion extending along a line connecting the inner portion and the outer portion; a second groove connected to the first groove and extending with a smaller radial change relative to the circumferential direction than the first groove; a third groove portion connected to the second groove portion and having a radial change with respect to the circumferential direction that is greater than the first groove portion and the second groove portion; Including, changeover switch.

[0074] [Configuration 13] In any one of the changeover switches of the above configurations 10 to 12, The follower portion at the reference follower position is located on the third axis. A changeover switch.

[0075] [Configuration 14] In any one of the changeover switches of the above configurations 10 to 13, The contacts are: a first contact portion that contacts the follower portion located closer to the first follower position than the reference follower position; a second contact portion that contacts the follower portion located closer to the second follower position than the reference follower position, the second contact portion having a shape symmetrical to the first contact portion; A changeover switch having a

[0076] [Configuration 15] In any one of the changeover switches of the above configurations 9 to 14, The base portion has a stopper portion that restricts movement of the operating lever in the circumferential direction.

[0077] The camera device according to the present invention may have the following configuration. [Configuration 16] A camera device comprising a changeover switch according to any one of the above configurations 9 to 15.

[0078] Although the preferred embodiments of the present invention have been described above, it goes without saying that the present invention is not limited to the above-described embodiments and may be embodied in various different forms within the scope of the technical concept thereof. [Explanation of symbols]

[0079] 1 Camera equipment 12 Inner cylinder 16 Cover plate 21~23 Aperture blades 30 Changeover switch 40 First base plate (base) 41 Outer wall 41B, 41C Stopper part 42 First inner wall 43 First Support Section 44 Second inner wall 45 Second Support Department 46 Spring fixing part 47 Recess 48 Circular groove 49 Aperture 50 Operating lever 51 Arc-shaped plate 52 Operation protrusion 53 Rail section 54 Extension 56 Cam groove 56A Inside part 56B Outer part 58A First Groove 58B Second groove 58C Third Groove 60 Second Base Plate 61~63 Axis (rotation axis) 64th axis (second axis) 70 Operating lever 74 Operating Part 76 Follower Section 77 Large diameter section 78 Small diameter section 80 Force application section 81 Contact 82 Coil spring (biasing part) 85 Top 86 Inclined portion (first contact portion) 87 Inclined portion (second contact portion) 90 Lens P Optical axis (first axis) Q axis (third axis)

Claims

1. at least one lens for imaging a subject onto an imaging area on a photographic film; At least one aperture blade is disposed in front of the at least one lens and configured to be movable between an aperture position that generates vignetting at a peripheral portion of the imaging area and an open position that is radially outward of the aperture position; a changeover switch including an operating lever movable by a user's operation, and an actuating lever connected to the at least one diaphragm blade and moving the at least one diaphragm blade between the diaphragm position and the open position in accordance with the movement of the operating lever; A camera device comprising:

2. The changeover switch is A base and A cam mechanism that converts the movement of the operating lever into the rotation of the actuating lever, a cam groove provided in one of the operating lever and the actuating lever; a follower portion provided on the other of the operating lever and the actuating lever, the follower portion being movable within the cam groove while engaging with the cam groove; A cam mechanism including: a force applying portion that applies a force to the follower portion of the cam mechanism; Further comprising: The operation lever of the changeover switch is configured to be movable on the base in a circumferential direction around a first axis, The actuating lever of the changeover switch is configured to be rotatable about a second shaft, The at least one diaphragm blade is configured to be rotatable around a rotation axis, The cam groove of the cam mechanism includes an inner portion and an outer portion located radially outward of the inner portion with respect to the first axis, and extends along the circumferential direction between the inner portion and the outer portion, the follower portion of the cam mechanism is movable between a first follower position located in the inner portion of the cam groove and a second follower position located in the outer portion of the cam groove, the force application portion is configured to push the follower portion toward the first follower position when the follower portion of the cam mechanism is located closer to the first follower position than a reference follower position, and to push the follower portion toward the second follower position when the follower portion of the cam mechanism is located closer to the second follower position than the reference follower position. The camera device according to claim 1 .

3. The force application portion of the changeover switch is a contactor configured to move along a third axis to contact the follower portion of the cam mechanism; a biasing portion that biases the contact in a direction along the third axis; Including, The camera device according to claim 2 .

4. 4. The camera device of claim 3, wherein the cam groove of the changeover switch has a shape such that the relationship between the rotation angle of the operating lever about the second axis and the movement distance of the contact in the direction along the third axis when the follower portion moves from the first follower position toward the reference follower position is the same as the relationship between the rotation angle of the operating lever about the second axis and the movement distance of the contact in the direction along the third axis when the follower portion moves from the second follower position toward the reference follower position.

5. The cam groove of the changeover switch is a first groove portion extending along a line connecting the inner portion and the outer portion; a second groove connected to the first groove and having a smaller radial change with respect to the circumferential direction than the first groove; a third groove portion connected to the second groove portion and having a radial change with respect to the circumferential direction that extends greater than the first groove portion and the second groove portion; The camera apparatus of claim 4 , comprising:

6. The camera device according to claim 3 , wherein the follower portion at the reference follower position is located on the third axis.

7. The contact of the changeover switch is a first contact portion that contacts the follower portion located closer to the first follower position than the reference follower position; a second contact portion that contacts the follower portion located closer to the second follower position than the reference follower position, the second contact portion having a shape symmetrical to the first contact portion; The camera device of claim 3 , further comprising:

8. The camera device according to claim 2 , wherein the base portion of the changeover switch has a stopper portion that restricts movement of the operation lever in the circumferential direction.

9. A base and an operating lever that is movable in a circumferential direction on the base portion around a first axis; an actuation lever rotatable about a second axis; A cam mechanism that converts the movement of the operating lever into the rotation of the actuating lever, a cam groove provided in one of the operating lever and the actuating lever; a follower portion provided on the other of the operating lever and the actuating lever, the follower portion being movable within the cam groove while engaging with the cam groove; A cam mechanism including: a force applying portion that applies a force to the follower portion of the cam mechanism; Equipped with The cam groove of the cam mechanism includes an inner portion and an outer portion located radially outward of the inner portion with respect to the first axis, and extends along the circumferential direction between the inner portion and the outer portion, the follower portion of the cam mechanism is movable between a first follower position located in the inner portion of the cam groove and a second follower position located in the outer portion of the cam groove, the force application portion is configured to push the follower portion toward the first follower position when the follower portion of the cam mechanism is located closer to the first follower position than a reference follower position, and to push the follower portion toward the second follower position when the follower portion of the cam mechanism is located closer to the second follower position than the reference follower position. Switch.

10. The force application unit includes: a contactor configured to move along a third axis to contact the follower portion of the cam mechanism; a biasing portion that biases the contact in a direction along the third axis; Including, The changeover switch according to claim 9.

11. The changeover switch of claim 10, wherein the cam groove of the cam mechanism has a shape such that a relationship between a rotation angle of the operating lever about the second axis and a movement distance of the contact in the direction along the third axis when the follower portion moves from the first follower position toward the reference follower position is the same as a relationship between a rotation angle of the operating lever about the second axis and a movement distance of the contact in the direction along the third axis when the follower portion moves from the second follower position toward the reference follower position.

12. The cam groove of the cam mechanism is a first groove portion extending along a line connecting the inner portion and the outer portion; a second groove connected to the first groove and having a smaller radial change with respect to the circumferential direction than the first groove; a third groove portion connected to the second groove portion and having a radial change with respect to the circumferential direction that extends greater than the first groove portion and the second groove portion; The changeover switch according to claim 11 , comprising:

13. The changeover switch according to claim 10 , wherein the follower portion at the reference follower position is located on the third axis.

14. The contacts include a first contact portion that contacts the follower portion located closer to the first follower position than the reference follower position; a second contact portion that contacts the follower portion located closer to the second follower position than the reference follower position, the second contact portion having a shape symmetrical to the first contact portion; The changeover switch according to claim 10, further comprising:

15. The changeover switch according to claim 9 , wherein the base portion has a stopper portion that restricts movement of the operating lever in the circumferential direction.

16. A camera device comprising the changeover switch according to any one of claims 9 to 15.

Images