Camera device

Abstract

To provide a camera device with which it is possible to suppress a decrease in light-shielding performance.SOLUTION: A camera device 1 comprises: a frame 90 accommodated in the inside of a housing in which an opening Q is formed at the front; a lens barrel 4 for accommodating a lens; a rearward light-shielding member 110 for shielding light from the outside of the lens barrel 4; and a pressing plate 140 for pressing against the frame 90 and fixing in position the rearward light-shielding member 110. A base part 11 of a stationary tube 10 includes inside faces 101A-101F extending in a rectangular form, circular arc faces 102A, 102B extending to the outside along a cylindrical wall 12 in a circular arc form, and a contact face 103 coming in contact with the front of the pressing plate 140. The pressing plate 140 includes a pressing part 141 of a rectangular frame shape extending along the inside faces 101A-101F of the base part 11 of the stationary tube 10 and coming in contact with a rearward connecting part 112 of the rearward light-shielding member 110, and an extension part 142 expanding from the pressing part 141 to the outside so as to face the circular arc faces 102A, 102B of the base part 11 of the stationary tube 10.SELECTED DRAWING: Figure 11

Description

Technical Field

[0001] The present invention relates to a camera device, and more particularly to a camera device provided with a lens barrel that can be extended and retracted along the optical axis direction.

Background Art

[0002] Conventionally, a camera having a lens barrel extension mechanism that extends the lens barrel forward along the optical axis direction has been known. In such a camera, in order to shield light and prevent dust when extending the lens barrel, it is common to connect the lens barrel and the camera body with a bellows that can be extended and retracted (see, for example, Patent Document 1). Since the end of the bellows fixed to the camera body is generally in the shape of a rectangular frame, such a bellows is often fixed by pressing a rectangular frame-shaped plate against the camera body. On the other hand, the member of the lens barrel fixed to the camera body often has a cylindrical side wall, and a space is likely to be generated between the rectangular frame-shaped plate pressing the bellows and the cylindrical side wall. When such a space is generated, it is conceivable that the bellows may float or come off, and the light shielding property and dustproof property of the bellows may deteriorate.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In view of such problems of the prior art, the present invention has been made, and an object thereof is to provide a camera device capable of suppressing a decrease in light shielding property.

Means for Solving the Problems

[0005] According to one aspect of the present invention, a camera device capable of suppressing a decrease in light-shielding property is provided. The camera device includes a housing having an opening formed in the front surface, a frame housed inside the housing, and a lens barrel that houses at least one lens. The lens barrel includes a fixed cylinder having a base fixed to the frame and a cylindrical wall extending axially from the base, and a telescopic unit disposed radially inward of the cylindrical wall of the fixed cylinder and capable of telescoping in the axial direction through the opening of the housing. The camera device further includes a light-shielding member that prevents light from outside the lens barrel from entering the optical path from a part of the telescopic unit to the frame, and a pressing plate that presses and fixes the light-shielding member to the frame. The light-shielding member includes a rectangular frame-shaped front connecting portion fixed to a part of the telescopic unit of the lens barrel, a rectangular frame-shaped rear connecting portion disposed between the pressing plate and the frame, and a bellows portion that telescopically connects between the front connecting portion and the rear connecting portion. The base of the fixed cylinder has an inner surface extending in a rectangular shape so as to face the outer surface of the rear connecting portion of the light-shielding member, an arc surface extending arcuately outward from the inner surface along a part of the cylindrical wall, and a contact surface that contacts the front surface of the pressing plate. The pressing plate has a rectangular frame-shaped pressing portion that extends along the inner surface of the base of the fixed cylinder and contacts the rear connecting portion of the light-shielding member, and an extension portion that extends outward from the pressing portion so as to face the arc surface of the base of the fixed cylinder.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5A

Figure 5B

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10A

Figure 10B

Figure 11

Figure 12A

Figure 12B

Figure 12C

Figure 13

Figure 14

Figure 15

Figure 16

Best Mode for Carrying Out the Invention

[0007] Hereinafter, embodiments of the camera device according to the present invention will be described in detail with reference to FIGS. 1 to 16. In FIGS. 1 to 16, the same or corresponding components are denoted by the same reference numerals, and redundant descriptions are omitted. Further, in FIGS. 1 to 16, there are cases where the scales and dimensions of each component are exaggeratedly shown and cases where some components are 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 represent a specific rank or order.

[0008] FIG. 1 is a perspective view showing a camera device 1 according to an embodiment of the present invention. The camera device 1 in the present embodiment is a camera (instant camera) that uses a photographic film that is automatically developed after shooting. Needless to say, the present invention can be applied to other than such instant cameras. In the present embodiment, for convenience, the +X direction in FIG. 1 is referred to as "front" or "forward", and the -X direction is referred to as "rear" or "backward".

[0009] 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 lens barrel 4 that houses a lens unit inside. A finder window 5 is formed in the front cover 2, and a flash window 6 is disposed adjacent to the finder window 5. Further, a release button 7 is disposed on the -Z direction side of the finder window 5. An ejection slit 8 extending in the Y direction is formed between the front cover 2 and the rear cover 3 at the upper parts of the front cover 2 and the rear cover 3. The photographic film developed after shooting is ejected from the ejection slit 8.

[0010] The lens barrel 4 in this embodiment has a structure that can expand and contract in the optical axis direction. The lens barrel 4 in the state shown in FIG. 1 is in the most contracted state in the optical axis direction (X direction). When the lens barrel 4 is in the state shown in FIG. 1, it is referred to as the "retracted state" of the camera device 1. FIG. 2 shows a state in which the lens barrel 4 is fully extended in the optical axis direction P (X direction) and the front cover 2 is removed. When the lens barrel 4 is in the state shown in FIG. 2, it is referred to as the "fully extended state" of the camera device 1.

[0011] As shown in FIG. 2, a substantially circular opening Q is formed on the front surface of the front cover 2, and a part of the lens barrel 4 extends and contracts along the optical axis P in front of the front cover 2 through this opening Q. Inside the housing composed of the front cover 2 and the rear cover 3, a substantially rectangular parallelepiped frame 90 is accommodated. A photographic film or the like is accommodated inside this frame 90. The lens barrel 4 is attached to the frame 90.

[0012] FIG. 3 is an exploded perspective view of the lens barrel 4 in the camera device of FIG. 1. As shown in FIG. 3, the lens barrel 4 in this embodiment includes a fixed cylinder 10 attached to the front surface of the frame 90, a drive cylinder 20 (operation ring) configured to be rotatable without moving axially with respect to the fixed cylinder 10, a cover cylinder 30 covering the outer periphery of the drive cylinder 20, a rotating cylinder 40 configured to be rotatable and axially movable with respect to the fixed cylinder 10, a key cylinder 50 configured to be axially movable together with the rotating cylinder 40 without rotating with respect to the fixed cylinder 10, a cover ring 58 attached to the front edge of the key cylinder 50, and a linear motion cylinder 70 configured to be rotatable together with the key cylinder 50 with respect to the fixed cylinder 10. In this embodiment, a lens unit including at least one lens (not shown) is accommodated inside the linear motion cylinder 70. An openable and closable barrier 78 is arranged in front of the lens unit of the linear motion cylinder 70. In this embodiment, the rotating cylinder 40, the key cylinder 50, the cover ring 58, and the linear motion cylinder 70 constitute a telescopic unit that can expand and contract in the axial direction (Z direction) through the opening Q of the front cover 2.

[0013] Figure 4 is a perspective view showing the drive cylinder 20. As shown in FIGS. 2 and 4, the drive cylinder 20 has a cylindrical portion 21 extending in the axial direction (X direction), two extension portions 22 extending rearward from the cylindrical portion 21, and an arc piece 23 extending radially outward from the rear end of the cylindrical portion 21. The cylindrical portion 21 is disposed radially outside the fixed cylinder 10. Further, the cylindrical portion 21 has a flange portion 21A projecting radially outward in the vicinity of its rear end, and a knurl 21B is formed on the outer peripheral surface of the cylindrical portion 21 to facilitate handling during assembly. The two extension portions 22 are disposed at positions facing each other with the optical axis P interposed therebetween. On the rear surface of the arc piece 23, recesses 231, 232, and 233 are formed at three circumferential positions corresponding to the telescopic state of the lens barrel 4.

[0014] Axial grooves 24 extending in the axial direction (X direction) are formed on the inner peripheral surfaces of the extension portions 22 and the cylindrical portion 21. Further, on the inner peripheral surface of the cylindrical portion 21, two circumferential grooves 25 extending in the circumferential direction and two communication grooves 26 extending in the +X direction from the rear edge portion of the cylindrical portion 21 and connecting to the ends of the circumferential grooves 25 are formed. The two axial grooves 24, the two circumferential grooves 25, and the two communication grooves 26 are each arranged at intervals of 180 degrees along the circumferential direction.

[0015] Three recesses 27 are formed at the front edge portion of the cylindrical portion 21, and a notch portion 28 is formed by cutting a part of the flange portion 21A on the -X direction side of each recess 27. These recesses 27 and notch portions 28 are arranged at intervals of 120 degrees along the circumferential direction.

[0016] Figures 5A and 5B are perspective views showing the fixed cylinder 10. As shown in FIGS. 2, 5A, and 5B, the fixed cylinder 10 has a rectangular frame-shaped base 11 fixed to the frame 90, a cylindrical wall 12 extending forward (+X direction) from the base 11, and two engaging pieces 13 protruding radially outward from the cylindrical wall 12. A cylindrical pin holding portion 18 for holding a pin (not shown) that abuts against the rear surface of the arc piece 23 of the drive cylinder 20 described above is formed on the base 11 of the fixed cylinder 10. Screw holes 11A are formed at the four corners of the base 11, and the fixed cylinder 10 is fixed to the frame 90 by inserting a screw 91 (see FIG. 2) through the screw hole 11A and screwing the screw 91 into the frame 90.

[0017] The width along the axial direction (X direction) of the engaging piece 13 of each fixed cylinder 10 (hereinafter referred to as the axial width) is slightly smaller than the axial width of the circumferential groove 25 of the drive cylinder 20, and the engaging piece 13 of the fixed cylinder 10 is engaged with the circumferential groove 25 of the drive cylinder 20 so that it can move circumferentially inside the circumferential groove 25. By the engagement between the engaging piece 13 of the fixed cylinder 10 and the circumferential groove 25 of the drive cylinder 20, the drive cylinder 20 can rotate relative to the fixed cylinder 10 without changing its axial position relative to the fixed cylinder 10.

[0018] Also, the width along the circumferential direction of the engaging piece 13 of the fixed cylinder 10 (hereinafter referred to as the circumferential width) is smaller than the circumferential width of the communication groove 26 of the drive cylinder 20. Therefore, when assembling the drive cylinder 20 to the fixed cylinder 10, by aligning the circumferential position of the engaging piece 13 of the fixed cylinder 10 with the circumferential position of the communication groove 26 of the drive cylinder 20 and moving the drive cylinder 20 from the front of the fixed cylinder 10 in the -X direction, the engaging piece 13 of the fixed cylinder 10 can be moved axially (X direction) inside the communication groove 26 of the drive cylinder 20 and moved to the end of the circumferential groove 25. In this state, by rotating the drive cylinder 20 relative to the fixed cylinder 10, the engaging piece 13 of the fixed cylinder 10 and the circumferential groove 25 of the drive cylinder 20 can be engaged.

[0019] As shown in FIGS. 2, 5A, and 5B, two through-cam grooves 14 extending through the cylindrical wall 12 of the fixed cylinder 10 are formed in the cylindrical wall 12. The two through-cam grooves 14 are arranged at intervals of 180 degrees along the circumferential direction. Each through-cam groove 14 includes a rear end portion 14A extending in the circumferential direction, a front end portion 14B extending in the circumferential direction, and an intermediate portion 14C connecting the rear end portion 14A and the front end portion 14B. The intermediate portion 14C of the through-cam groove 14 extends such that the circumferential position gradually changes from the rear end portion 14A toward the front end portion 14B.

[0020] Also, on the inner peripheral surface of the cylindrical wall 12 of the fixed cylinder 10, two cam grooves 15 extending in a shape corresponding to the above-described through-cam grooves 14 and two axial grooves 16 extending in the axial direction (X direction) are formed. In the present embodiment, the cam grooves 15 are formed at positions rotated 90 degrees around the axis with respect to the through-cam grooves 14.

[0021] Returning to FIG. 2, the opening Q of the front cover 2 is formed inside a cylindrical portion 310 extending in the X direction. At the front edge of the cylindrical portion 310, a flange portion 312 extending radially inward is formed, and a part of the flange portion 312 is cut out to form a notch portion 314. Further, adjacent to this notch portion 314, a regulating piece 316 protruding forward from the flange portion 312 and extending radially inward is formed. This regulating piece 316 abuts against the front surface of the flange portion 21A of the drive cylinder 20 to regulate the axial movement of the drive cylinder 20.

[0022] FIG. 6 is a perspective view showing the cover cylinder 30. The cover cylinder 30 is configured to be rotatable with respect to the fixed cylinder 10 together with the drive cylinder 20 described above. As shown in FIG. 6, the cover cylinder 30 includes a cylindrical portion 31 extending in the axial direction (X direction), an annular portion 32 extending radially inward from the front end of the cylindrical portion 31, three engaging portions 34 formed on the inner peripheral surface of the cylindrical portion 31, and three hook portions 35 disposed behind the three engaging portions 34. Concavities and convexities are formed on the outer peripheral surface of the cylindrical portion 31 so that the user can easily operate it. When the cover cylinder 30 is formed of resin or the like, if the engaging portions 34 and the hook portions 35 are formed at various locations on the cover cylinder 30, the outer shape of the cover cylinder 30 is likely to be deformed. Therefore, in the present embodiment, the three engaging portions 34 and the three hook portions 35 are aligned and arranged in the circumferential direction, and are arranged at intervals of 120 degrees along the circumferential direction.

[0023] A recess is formed in the central portion along the circumferential direction of each engaging portion 34, and a recess is also formed in the central portion along the circumferential direction of each hook portion 35. Each hook portion 35 includes a beam portion 35A extending in the -X direction from the engaging portion 34, and an engaging piece 35B extending radially outward from the rear end portion of the beam portion 35A so as to be separated from the rear end portion of the cylindrical portion 31. The axial separation distance between the engaging piece 35B of the hook portion 35 and the rear end portion of the cylindrical portion 31 is slightly larger than the axial width of the flange portion 312 of the front cover 2 described above, and the engaging piece 35B of each hook portion 35 can be engaged with the flange portion 312 of the front cover 2. Thereby, the cover cylinder 30 can be attached to the front cover 2 in a rotatable state.

[0024] Further, the circumferential width of the engaging portion 34 of the cover cylinder 30 is substantially the same as the circumferential width of the recess 27 of the drive cylinder 20, and each engaging portion 34 is fitted (engaged) with the recess 27 of the drive cylinder 20 in the circumferential direction. Further, the circumferential width of the engaging piece 35B of each hook portion 35 is substantially the same as the circumferential width of the notch portion 28 of the drive cylinder 20, and the engaging piece 35B of each hook portion 35 is fitted with the notch portion 28 of the drive cylinder 20. Thereby, the cover cylinder 30 and the drive cylinder 20 are integrated.

[0025] Here, the circumferential width of the notch portion 314 formed in the flange portion 312 of the front cover 2 is larger than the circumferential width of each hook portion 35. Therefore, when assembling the cover cylinder 30 and the drive cylinder 20 to the front cover 2, the circumferential position of the hook portion 35 of the cover cylinder 30 is aligned with the circumferential position of the notch portion 314 of the front cover 2, and the integrated cover cylinder 30 and drive cylinder 20 are moved in the -X direction from the front of the front cover 2, so that the engaging piece 35B of the hook portion 35 of the cover cylinder 30 is passed through the notch portion 314 of the flange portion 312 of the front cover 2, and then the integrated cover cylinder 30 and drive cylinder 20 are rotated with respect to the front cover 2 (counterclockwise in FIG. 2), whereby the engaging piece 35B of the hook portion 35 of the cover cylinder 30 can be engaged with the flange portion 312 of the front cover 2.

[0026] FIG. 7 is a perspective view showing the rotating cylinder 40. This rotating cylinder 40 is configured to be rotatable and axially movable with respect to the fixed cylinder 10. As shown in FIGS. 2 and 7, the rotating cylinder 40 includes a cylindrical portion 41 that extends in the axial direction (X direction) and is disposed radially inside the fixed cylinder 10, two operating portions 42 that project radially outward near the rear end portion of the cylindrical portion 41, two projecting portions 43 that project radially outward near the rear end portion of the cylindrical portion 41, and three engaging pieces 44 that project radially inward from the inner peripheral surface of the cylindrical portion 41.

[0027] The amount of projection of the operating portion 42 radially outward is larger than the amount of projection of the projecting portion 43 radially outward. For example, the operating portion 42 can be configured by attaching a screw to a boss portion formed near the rear end portion of the cylindrical portion 41. In the present embodiment, the operating portion 42 and the projecting portion 43 are alternately arranged at intervals of 90 degrees along the circumferential direction. Further, the three engaging pieces 44 are arranged at intervals of 120 degrees around the axis.

[0028] The outer diameter of each operating portion 42 is slightly smaller than the axial width of the rear end portion 14A and the front end portion 14B of the through cam groove 14 of the fixed cylinder 10, the circumferential width of the intermediate portion 14C, and the circumferential width of the axial groove 24 of the drive cylinder 20. Each operating portion 42 engages with the axial groove 24 of the drive cylinder 20 through the through cam groove 14 of the fixed cylinder 10. Further, the outer diameter of each protruding portion 43 is smaller than the circumferential width of the cam groove 15 of the fixed cylinder 10, and the protruding portion 43 can move inside the cam groove 15 of the fixed cylinder 10.

[0029] With such a configuration, the operating portion 42 of the rotating cylinder 40 engages with the through cam groove 14 of the fixed cylinder 10 and can move along the through cam groove 14 inside the through cam groove 14 of the fixed cylinder 10, and also engages with the axial groove 24 of the drive cylinder 20 and can move along the axial direction inside the axial groove 24 of the drive cylinder 20. Due to the engagement between the operating portion 42 of the rotating cylinder 40 and the axial groove 24 of the drive cylinder 20, when the drive cylinder 20 rotates relative to the fixed cylinder 10, the rotating cylinder 40 rotates relative to the fixed cylinder 10 together with the drive cylinder 20. At this time, due to the engagement between the operating portion 42 of the rotating cylinder 40 and the through cam groove 14 of the fixed cylinder 10, as the rotating cylinder 40 rotates, the rotating cylinder 40 moves in the X direction relative to the fixed cylinder 10 along the shape of the through cam groove 14 (intermediate portion 14C). Thus, when the drive cylinder 20 rotates relative to the fixed cylinder 10, the rotating cylinder 40 rotates relative to the fixed cylinder 10 and is fed out in the +X direction. When the operating portion 42 of the rotating cylinder 40 moves along the through cam groove 14 of the fixed cylinder 10, the protruding portion 43 of the rotating cylinder 40 moves inside the cam groove 15 of the fixed cylinder 10, and the rotating cylinder 40 is supported assistingly inside the fixed cylinder 10 due to the engagement between the protruding portion 43 of the rotating cylinder 40 and the cam groove 15 of the fixed cylinder 10.

[0030] As shown in FIGS. 2 and 7, on the inner peripheral surface of the cylindrical portion 41 of the rotating cylinder 40, six cam grooves 45 extending such that the circumferential position gradually changes from the rear end portion toward the front end portion, and six connecting grooves 46 extending in the -X direction from the front edge portion of the rotating cylinder 40 and connecting to the front end portions of the cam grooves 45 are formed. The six cam grooves 45 and the six connecting grooves 46 are arranged at intervals of 60 degrees around the axis.

[0031] FIG. 8 is an exploded perspective view showing the key cylinder 50 together with the connecting frame 60 attached to the rear end portion thereof and the rear light-shielding member 110. As shown in FIGS. 2 and 8, the key cylinder 50 has a cylindrical portion 51 extending in the axial direction (X direction). The cylindrical portion 51 of the key cylinder 50 is disposed radially inside the cylindrical portion 41 of the rotary cylinder 40.

[0032] Six axial grooves 52 extending in the axial direction (X direction) through the cylindrical portion 51 and six communication grooves 53 extending in the -X direction from the front edge portion of the cylindrical portion 51 and connecting to the ends of the axial grooves 52 are formed in the cylindrical portion 51 of the key cylinder 50. The six axial grooves 52 and the six communication grooves 53 are each arranged at intervals of 60 degrees along the circumferential direction.

[0033] In addition, three circumferential grooves 54 extending in the circumferential direction near the front edge of the cylindrical portion 51 and three communication grooves 55 extending in the +X direction from the rear edge portion of the cylindrical portion 51 and connecting to the ends of the circumferential grooves 54 are formed on the outer peripheral surface of the cylindrical portion 51 of the key cylinder 50. The three communication grooves 55 and the three circumferential grooves 54 are each arranged at intervals of 120 degrees along the circumferential direction.

[0034] The axial width of the circumferential groove 54 of the key cylinder 50 is slightly larger than the axial width of the engaging piece 44 of the rotary cylinder 40, and the engaging piece 44 of the rotary cylinder 40 is engaged with the circumferential groove 54 of the key cylinder 50 so as to be movable in the circumferential direction inside the circumferential groove 54. By the engagement between the engaging piece 44 of the rotary cylinder 40 and the circumferential groove 54 of the key cylinder 50, the key cylinder 50 can rotate relative to the rotary cylinder 40 without changing the axial position with respect to the rotary cylinder 40.

[0035] Also, the circumferential width of the communication groove 55 of the key cylinder 50 is larger than the circumferential width of the engaging piece 44 of the rotating cylinder 40. Therefore, when assembling the key cylinder 50 to the rotating cylinder 40, the circumferential position of the engaging piece 44 of the rotating cylinder 40 is aligned with the circumferential position of the communication groove 55 of the key cylinder 50, and the key cylinder 50 is moved in the -X direction from the front of the rotating cylinder 40, so that the engaging piece 44 of the rotating cylinder 40 can be moved axially (X direction) inside the communication groove 55 of the key cylinder 50 and moved to the end of the circumferential groove 54. In this state, by rotating the key cylinder 50 relative to the rotating cylinder 40, the engaging piece 44 of the rotating cylinder 40 and the circumferential groove 54 of the key cylinder 50 can be engaged.

[0036] As shown in FIG. 8, a screwing portion 51A is provided at the rear end of the cylindrical portion 51 of the key cylinder 50. The connecting frame 60 is a member for attaching the rear light-shielding member 110 and the front light-shielding member 120 to the rear end of the key cylinder 50, and a screw hole 61 is formed in the connecting frame 60. By inserting a screw (not shown) through the screw hole 61 of the connecting frame 60 and screwing this screw into the screwing portion 51A of the key cylinder 50, the connecting frame 60 is fixed to the rear end of the key cylinder 50.

[0037] The connecting frame 60 has two engaging portions 62 extending radially outward. The width of this engaging portion 62 is slightly smaller than the width of the axial groove 16 of the fixed cylinder 10, and each engaging portion 62 is engaged with the axial groove 16 of the fixed cylinder 10 so as to be able to move axially inside this axial groove 16. Therefore, the key cylinder 50 can move axially together with the rotating cylinder 40 while rotating relative to the rotating cylinder 40 without rotating relative to the fixed cylinder 10.

[0038] FIG. 9 is an exploded perspective view showing the linear cylinder 70 together with the front light-shielding member 120 attached to its rear end. As shown in FIGS. 2 and 9, the linear cylinder 70 has a cylindrical portion 71 disposed radially inward of the key cylinder 50 and six cylindrical operating portions 72 protruding radially outward from the outer peripheral surface. These operating portions 72 are arranged at equal intervals along the circumferential direction. The outer diameter of each operating portion 72 is slightly smaller than the circumferential widths of the axial groove 52 and the communication groove 53 of the key cylinder 50 and the circumferential widths of the communication groove 46 and the cam groove 45 of the rotating cylinder 40. Each operating portion 72 engages with the cam groove 45 of the rotating cylinder 40 through the axial groove 52 of the key cylinder 50.

[0039] The key cylinder 50 cannot rotate relative to the fixed cylinder 10 due to the engagement between the engaging portion 62 of the connecting frame 60 and the axial groove 16 of the fixed cylinder 10, while the rotating cylinder 40 can rotate relative to the fixed cylinder 10. Therefore, when the rotating cylinder 40 rotates relative to the fixed cylinder 10, the linear cylinder 70 moves in the X direction relative to the rotating cylinder 40 along the shape of the cam groove 45 due to the engagement between the operating portion 72 of the linear cylinder 70 and the cam groove 45 of the rotating cylinder 40. In this way, by rotating the rotating cylinder 40 relative to the fixed cylinder 10, the linear cylinder 70 can be extended from the rotating cylinder 40 in the +X direction.

[0040] When assembling the linear cylinder 70 to the key cylinder 50, after assembling the key cylinder 50 to the rotating cylinder 40 as described above, the rotating cylinder 40 is rotated relative to the key cylinder 50 to align the circumferential position of the communication groove 46 of the rotating cylinder 40 with the circumferential position of the communication groove 53 of the key cylinder 50. Further, by aligning the circumferential position of the operating portion 72 of the linear cylinder 70 with the circumferential positions of these communication grooves 53, 46 and moving the linear cylinder 70 in the -X direction from the front of the rotating cylinder 40 and the key cylinder 50, the operating portion 72 of the linear cylinder 70 can be moved from the communication grooves 53, 46 into the axial groove 52 of the key cylinder 50 and the cam groove 45 of the rotating cylinder 40, respectively. Thereby, the operating portion 72 of the linear cylinder 70 can be engaged with the axial groove 52 of the key cylinder 50 and the cam groove 45 of the rotating cylinder 40.

[0041] As described above, in this embodiment, in order to introduce the operating portion 72 of the linear cylinder 70 into the axial groove 52 of the key cylinder 50 and the cam groove 45 of the rotating cylinder 40, communication grooves 53 and 46 are respectively formed at the front edge portions of the key cylinder 50 and the rotating cylinder 40. Since it is not preferable in terms of the appearance of the product when these communication grooves 53 and 46 are exposed to the outside, a cover ring 58 that covers the front edge portions of the key cylinder 50 and the rotating cylinder 40 is attached to the key cylinder 50. For example, this cover ring 58 can be attached to the key cylinder 50 by fitting a protrusion 58A (see FIG. 3) formed on the rear surface of the cover ring 58 into the communication groove 53 of the key cylinder 50.

[0042] FIG. 10A is a longitudinal sectional view when the camera device 1 is in the maximum extended state, and FIG. 10B is a sectional view when in the retracted state. As shown in FIGS. 10A and 10B, the camera device 1 in this embodiment includes a rear light-shielding member 110 and a front light-shielding member 120 that prevent light from entering the optical path inside the lens barrel 4 from outside the lens barrel 4. The rear light-shielding member 110 is disposed between the rear end portion of the key cylinder 50 and the frame 90. The rear light-shielding member 110 is made of a flexible material such as rubber, for example, and is configured to expand and contract as the key cylinder 50 (rotating cylinder 40) moves axially with respect to the fixed cylinder 10. The front light-shielding member 120 is disposed between the rear end portion of the linear cylinder 70 and the rear end portion of the key cylinder 50. Similar to the rear light-shielding member 110, the front light-shielding member 120 is made of a flexible material such as rubber, for example, and is configured to expand and contract as the linear cylinder 70 moves axially with respect to the key cylinder 50 (rotating cylinder 40).

[0043] Returning to FIG. 8, the rear light-shielding member 110 includes a rectangular frame-shaped front connecting portion 111 fixed to the rear end portion of the key cylinder 50, a rectangular frame-shaped rear connecting portion 112 fixed to the frame 90, and a bellows portion 113 that connects the front connecting portion 111 and the rear connecting portion 112 in a stretchable manner. A rectangular opening is formed inside the rear light-shielding member 110, and the opening inside the rear light-shielding member 110 gradually increases from the front connecting portion 111 toward the rear connecting portion 112.

[0044] As shown in Fig. 8, a plurality of screw holes 114 are formed in the front connecting portion 111 of the rear light-shielding member 110. In the connecting frame 60 attached to the key cylinder 50, screw holes 63 are formed corresponding to the screw holes 114 in the front connecting portion 111 of the rear light-shielding member 110. A rectangular frame-shaped mounting plate 130 is disposed behind (-X direction side) the front connecting portion 111 of the rear light-shielding member 110. Screw holes 131 are also formed in this mounting plate 130 corresponding to the screw holes 114 in the front connecting portion 111 of the rear light-shielding member 110. By screwing a screw 135 into the screw holes 131 of the mounting plate 130, the screw holes 114 of the front connecting portion 111 of the rear light-shielding member 110, and the screw holes 63 of the connecting frame 60 attached to the key cylinder 50, the front connecting portion 111 of the rear light-shielding member 110 is sandwiched and held between the mounting plate 130 and the connecting frame 60 attached to the key cylinder 50.

[0045] At this time, the positioning of the rear light-shielding member 110 and the mounting plate 130 with respect to the connecting frame 60 is performed by inserting a protrusion 64 provided on the connecting frame 60 into positioning holes 115 formed in the front connecting portion 111 of the rear light-shielding member 110 and positioning holes 132 formed in the mounting plate 130.

[0046] Fig. 11 is an exploded perspective view for explaining the mounting state of the rear light-shielding member 110 to the frame 90. As shown in Fig. 11, a rectangular recess 92 for receiving the rear connecting portion 112 of the rear light-shielding member 110 is formed in the frame 90. A rectangular opening is formed inside the recess 92. Between the rear connecting portion 112 of the rear light-shielding member 110 and the base 11 of the fixed cylinder 10, a pressing plate 140 for pressing and fixing the rear light-shielding member 110 to the frame 90 is disposed.

[0047] FIG. 12A is a front view of the pressing plate 140, FIG. 12B is a rear view, and FIG. 12C is a left side view. As shown in FIGS. 12A to 12C, the pressing plate 140 includes a rectangular frame-shaped pressing portion 141 with a rectangular opening D formed in the center, two extension portions 142 that extend outward from the pressing portion 141 in the Y direction, and a rectangular parallelepiped-shaped support portion 143. The pressing portion 141 has outer surfaces 145A to 145F that extend in a substantially rectangular shape, and the extension portions 142 have outer surfaces 146A and 146B that extend in an arc shape. The pressing portion 141 is configured to abut against the front surface of the rear connecting portion 112 of the rear light-shielding member 110. The pressing plate 140 is housed in a space formed at the rear end portion of the base portion 11 of the fixed cylinder 10.

[0048] FIG. 13 is a rear view of the fixed cylinder 10. As shown in FIGS. 5B, 11, and 13, at the rear end portion of the base portion 11 of the fixed cylinder 10, there are inner surfaces 101A to 101F that extend in a rectangular shape so as to face the outer surfaces 112A to 112D of the rear connecting portion 112 of the rear light-shielding member 110, an arc surface 102A that extends outward (in the -X direction) in an arc shape from the inner surfaces 101B and 101C along a part of the cylindrical wall 12, an arc surface 102B that extends outward (in the +X direction) in an arc shape from the inner surfaces 101E and 101F along a part of the cylindrical wall 12, and a contact surface 103 that abuts against the front surface of the pressing plate 140. The pressing plate 140 is housed in a recess defined by the inner surfaces 101A to 101F, the arc surfaces 102A and 102B, and the contact surface 103 of the base portion 11.

[0049] That is, the pressing plate 140 is received in the recess such that its outer surface 145A faces the inner surface 101A of the base 11 of the fixed cylinder 10, the outer surface 145B faces the inner surface 101B of the base 11, the outer surface 146A faces the arc surface 102A of the base 11, the outer surface 145C faces the inner surface 101C of the base 11, the outer surface 145D faces the inner surface 101D of the base 11, the outer surface 145E faces the inner surface 101E of the base 11, the outer surface 146B faces the arc surface 102B of the base 11, and the outer surface 145F faces the inner surface 101F of the base 11. At this time, the positioning of the pressing plate 140 with respect to the base 11 of the fixed cylinder 10 is performed by inserting a protrusion 104 provided on the base 11 into a positioning hole 147 formed in the pressing portion 141 of the pressing plate 140.

[0050] The rear connecting portion 112 of the rear light-shielding member 110 is disposed in the recess so as to abut against the rear surface of the pressing portion 141 of the pressing plate 140. At this time, the outer surface 112A (see FIG. 11; the same applies hereinafter) of the rear connecting portion 112 of the rear light-shielding member 110 faces the inner surface 101A of the base 11 of the fixed cylinder 10, the outer surface 112B faces the inner surfaces 101B and 101C of the base 11, the outer surface 112C faces the inner surface 101D of the base 11, and the outer surface 112D faces the inner surfaces 101E and 101F of the base 11.

[0051] As described above, the fixed cylinder 10 is fixed to the frame 90 by inserting a screw 91 (see FIG. 2) through a screw hole 11A in the base 11 of the fixed cylinder 10 and screwing the screw 91 into a screw hole 93 formed in the frame 90. However, when the fixed cylinder 10 is fixed to the frame 90 in this way, the contact surface 103 of the base 11 of the fixed cylinder 10 presses the pressing plate 140 received in the recess in the -X direction. As a result, the rear connecting portion 112 of the rear light-shielding member 110 is sandwiched and held between the pressing portion 141 of the pressing plate 140 and the frame 90.

[0052] FIG. 14 is an enlarged schematic cross-sectional view when the camera device 1 is cut along the line A-A in FIG. 13. In FIG. 14, for ease of understanding, illustrations other than the fixed cylinder 10, the pressing plate 140, the rear light-shielding member 110, and the frame 90 are omitted. As shown in FIG. 14, the extension portion 142 of the pressing plate 140 extends outward from the pressing portion 141, and the outer surfaces 146A and 146B of the extension portion 142 face the arc surfaces 102A and 102B of the base portion 11 of the fixed cylinder 10, respectively. With such a configuration, a gap is less likely to occur between the arc surfaces 102A and 102B along the cylindrical wall 12 of the fixed cylinder 10 and the pressing plate 140, so that the lifting and dropping of the rear connecting portion 112 of the rear light-shielding member 110 can be suppressed, and the light-shielding property and dust-proof property of the rear light-shielding member 110 can be maintained.

[0053] Also, in the present embodiment, as shown in FIG. 14, the thickness of the extension portion 142 of the pressing plate 140 along the X direction is larger than the thickness of the pressing portion 141 along the X direction, and a part of the extension portion 142 is located outside the outer surfaces 112B and 112D of the rear connecting portion 112 of the rear light-shielding member 110. In this way, also in the portion facing the arc surfaces 102A and 102B of the base portion 11 of the fixed cylinder 10, the rear connecting portion 112 of the rear light-shielding member 110 is surrounded by the extension portion 142 of the pressing plate 140, so that the lifting and dropping of the rear connecting portion 112 of the rear light-shielding member 110 can be more reliably suppressed.

[0054] FIG. 15 is a schematic partial cross-sectional view when the camera device 1 is cut along the line B-B in FIG. 13. In FIG. 15, for ease of understanding, illustrations other than the fixed cylinder 10, the pressing plate 140, the driving cylinder 20, and the frame 90 are omitted. As shown in FIG. 15, behind the pin holding portion 18 of the base portion 11 of the fixed cylinder 10, a housing portion 105 for housing the support portion 143 of the pressing plate 140 is formed adjacent to the pin holding portion 18. Inside the pin holding portion 18, a pin 106 with a pointed tip and a coil spring 107 as a biasing member for biasing the pin 106 in the +X direction are housed, and the pin 106 is held in the pin holding portion 18 in a state where it can move in the X direction.

[0055] The support portion 143 of the pressing plate 140 housed in the housing portion 105 of the base portion 11 is located behind the coil spring 107 housed in the pin holding portion 18 and is configured to support the coil spring 107. With such a configuration, the pin 106 in the pin holding portion 18 is pressed against the rear surface of the arc piece 23 of the drive cylinder 20 in a state of being biased in the +X direction. As described above, recesses 231, 232, and 233 are formed on the rear surface of the arc piece 23 of the drive cylinder 20 at three circumferential positions corresponding to the telescopic state of the lens barrel 4. When the drive cylinder 20 rotates and the recesses 231, 232, and 233 move to the positions of the pin 106 respectively, the pin 106 fits into the recesses 231, 232, and 233. Thereby, the user who rotates the cylindrical portion 31 of the cover cylinder 30 integrated with the drive cylinder 20 can obtain a click feeling at this position and know that the lens barrel 4 has reached a predetermined telescopic state. In the present embodiment, when the lens barrel 4 is in the retracted state, the pin 106 fits into the recess 231, when the lens barrel 4 is in the state of performing normal photographing, the pin 106 fits into the recess 232 (the state shown in FIG. 15), and when the lens barrel 4 is in the state of performing close-up macro photographing (maximum extended state), the pin 106 fits into the recess 233.

[0056] As shown in FIGS. 12A, 12B, and 12C, the support portion 143 of the pressing plate 140 has a contact portion 143A in contact with the coil spring 107, three leg portions 143B extending rearward from the contact portion 143A, and claw portions 143C extending outward from the leg portions 143B and engaging with the edge of the housing portion 105 of the base portion 11. In this way, by extending a plurality of thin leg portions 143B rearward from the contact portion 143A of the support portion 143 of the pressing plate 140, the support portion 143 is easily deformed, so that the support portion 143 can be easily housed in the housing portion 105 of the base portion 11 of the fixed cylinder 10. Further, by engaging the claw portion 143C of the support portion 143 of the pressing plate 140 with the edge of the housing portion 105 of the base portion 11, it is possible to prevent the support portion 143 of the pressing plate 140 from falling off from the housing portion 105 of the base portion 11.

[0057] In this way, by providing the support portion 143 on the pressing plate 140, in addition to the function of fixing the rear connecting portion 112 of the rear light-shielding member 110 to the frame 90, the pressing plate 140 can be given the function of supporting the coil spring 107 that biases the above-described pin 106. Therefore, there is no need to separately prepare a component for supporting the coil spring 107 that biases the pin 106, and the number of components can be reduced to reduce the manufacturing cost.

[0058] Returning to FIG. 9, the front light-shielding member 120 includes a rectangular frame-shaped front connecting portion 121 fixed to the rear end portion 73 of the linear motion cylinder 70, a rectangular frame-shaped rear connecting portion 122 fixed to the connecting frame 60 attached to the key cylinder 50, and a bellows portion 123 that connects the front connecting portion 121 and the rear connecting portion 122 in a telescopic manner. Inside the front light-shielding member 120, a rectangular opening is formed, and the opening inside the front light-shielding member 120 gradually becomes larger from the front connecting portion 121 toward the rear connecting portion 122.

[0059] As shown in FIG. 9, a plurality of screw holes 124 are formed in the front connecting portion 121 of the front light-shielding member 120. A screw hole 74 is formed in the rear end portion 73 of the linear motion cylinder 70 corresponding to the screw holes 124 of the front connecting portion 121 of the front light-shielding member 120. A rectangular frame-shaped mounting plate 150 is disposed on the rear side (-X direction side) of the front connecting portion 121 of the front light-shielding member 120. Screw holes 151 corresponding to the screw holes 124 of the front connecting portion 121 of the front light-shielding member 120 are also formed in this mounting plate 150. By screwing a screw 155 into the screw holes 151 of the mounting plate 150, the screw holes 124 of the front connecting portion 121 of the front light-shielding member 120, and the screw holes 74 of the rear end portion 73 of the linear motion cylinder 70, the front connecting portion 121 of the front light-shielding member 120 is sandwiched and held between the mounting plate 150 and the rear end portion 73 of the linear motion cylinder 70.

[0060] At this time, the positioning of the front light-shielding member 120 and the mounting plate 150 with respect to the linear motion cylinder 70 is performed by inserting a projection 75 provided at the rear end portion 73 of the linear motion cylinder 70 into a positioning hole 125 formed in the front connecting portion 121 of the front light-shielding member 120 and a positioning hole 152 formed in the mounting plate 150.

[0061] FIG. 16 is an exploded perspective view for explaining the mounting state of the front light-shielding member 120 to the connecting frame 60. As shown in FIG. 16, a frame portion 65 for receiving the rear connecting portion 122 of the front light-shielding member 120 is formed in the connecting frame 60. A substantially rectangular frame-shaped mounting plate 160 is disposed in front of the rear connecting portion 122 of the front light-shielding member 120 (on the +X direction side). A plurality of screw holes 161 are formed in the mounting plate 160. Screw holes 66 are formed in the connecting frame 60 corresponding to the screw holes 161 of the mounting plate 160. By screwing a screw 165 into the screw hole 161 of the mounting plate 160 and the screw hole 66 of the connecting frame 60, the rear connecting portion 122 of the front light-shielding member 120 is sandwiched and held between the mounting plate 160 and the connecting frame 60.

[0062] According to the above-described embodiment, in the retracted state of the camera device 1 shown in FIG. 1, when the user performs an operation of rotating the cylindrical portion 31 of the cover cylinder 30 with respect to the fixed cylinder 10, the drive cylinder 20 rotates integrally with the cover cylinder 30, and due to the engagement between the operating portion 42 of the rotating cylinder 40 and the axial groove 24 of the drive cylinder 20 and the engagement between the operating portion 42 of the rotating cylinder 40 and the through-cam groove 14 of the fixed cylinder 10, the rotating cylinder 40 rotates integrally with the drive cylinder 20 and moves axially along the shape of the through-cam groove 14 of the fixed cylinder 10. Further, due to the engagement between the operating portion 72 of the linear motion cylinder 70 and the axial groove 52 of the key cylinder 50 and the engagement between the operating portion 72 of the linear motion cylinder 70 and the cam groove 45 of the rotating cylinder 40, the linear motion cylinder 70 moves axially along the shape of the cam groove 45 of the rotating cylinder 40 without rotating with respect to the fixed cylinder 10. In this way, it is possible to extend both the rotating cylinder 40 and the linear motion cylinder 70 of the lens barrel 4 axially. In the retracted state and the maximum extended state, the extending portion 22 of the drive cylinder 20 abuts against the edge portion 19A (see FIGS. 3 and 5A) of the pedestal portion 19 of the base portion 11 of the fixed cylinder 10, thereby restricting further rotation of the drive cylinder 20.

[0063] At this time, a connecting frame 60 is attached to the rear end portion of the key cylinder 50 that is extended axially together with the rotating cylinder 40. Since the space between this connecting frame 60 and the frame 90 is connected by the bellows portion 113 of the expandable rear light-shielding member 110, it is possible to prevent light from outside the lens barrel 4 from entering the optical path from the rear end portion of the key cylinder 50 to the frame 90. Further, since the space between the rear end portion of the linear motion cylinder 70 and the connecting frame 60 is connected by the expandable bellows portion 123 of the front light-shielding member 120, it is possible to prevent light from outside the lens barrel 4 from entering the optical path from the rear end portion of the linear motion cylinder 70 to the rear end portion of the key cylinder 50.

[0064] As described above, according to one aspect of the present invention, a camera device capable of suppressing a decrease in light shielding property is provided. The camera device includes a housing having an opening formed in the front surface, a frame housed inside the housing, and a lens barrel that houses at least one lens. The lens barrel includes a fixed cylinder having a base fixed to the frame and a cylindrical wall extending in the axial direction from the base, and a telescopic unit disposed radially inward of the cylindrical wall of the fixed cylinder and telescopic in the axial direction through the opening of the housing. The camera device further includes a light shielding member that prevents light from outside the lens barrel from entering the optical path from a part of the telescopic unit to the frame, and a pressing plate that presses and fixes the light shielding member to the frame. The light shielding member includes a rectangular frame-shaped front connecting portion fixed to a part of the telescopic unit of the lens barrel, a rectangular frame-shaped rear connecting portion disposed between the pressing plate and the frame, and a bellows portion that telescopically connects between the front connecting portion and the rear connecting portion. The base of the fixed cylinder has an inner surface extending in a rectangular shape so as to face the outer surface of the rear connecting portion of the light shielding member, an arcuate surface extending outward in an arcuate shape from the inner surface along a part of the cylindrical wall, and a contact surface that contacts the front surface of the pressing plate. The pressing plate has a rectangular frame-shaped pressing portion extending along the inner surface of the base of the fixed cylinder and contacting the rear connecting portion of the light shielding member, and an extension portion extending outward from the pressing portion so as to face the arcuate surface of the base of the fixed cylinder.

[0065] According to such a configuration, when the base of the fixed cylinder is fixed to the frame, the contact surface of the base of the fixed cylinder presses the pressing plate against the frame, so that the rear connecting portion of the light shielding member can be sandwiched and held between the pressing portion of the pressing plate and the frame. At this time, since the extension portion of the pressing plate extends outward from the pressing portion and faces the arcuate surface of the base of the fixed cylinder, a gap is less likely to occur between the arcuate surface along the cylindrical wall of the fixed cylinder and the pressing plate. Therefore, it is possible to suppress the lifting and dropping of the rear connecting portion of the light shielding member, and maintain the light shielding property and dustproof property of the light shielding member.

[0066] It is preferable that a part of the extension portion is formed thicker than the thickness of the pressing portion so as to be located outside the rear connecting portion of the light shielding member. In this case, also in the portion facing the arc surface of the base of the fixed cylinder, the rear connecting portion of the light shielding member is surrounded by the extension portion of the pressing plate, so that the lifting and dropping of the rear connecting portion of the light shielding member can be more reliably suppressed.

[0067] The lens barrel may further include a drive cylinder that drives the telescopic unit to expand and contract. The drive cylinder is configured to be rotatable without moving in the axial direction with respect to the fixed cylinder. The drive cylinder may have a cylindrical portion disposed radially outside the cylindrical wall of the fixed cylinder and an arc piece extending radially outward from the cylindrical portion. A concave portion is formed in the arc piece at a circumferential position corresponding to the telescopic state of the lens barrel. The fixed cylinder portion may further include a pin, a pin holding portion that holds the pin in a state of being axially movable, a biasing member that biases the pin toward the arc piece of the drive cylinder inside the pin holding portion, and a housing portion formed adjacent to the pin holding portion. The pressing plate may be housed in the housing portion of the fixed cylinder and may further have a support portion that supports the biasing member of the fixed cylinder. By providing such a support portion on the pressing plate, in addition to the function of fixing the rear connecting portion of the light shielding member to the frame, the pressing plate can be given the function of supporting the biasing member that biases the pin of the fixed cylinder. Therefore, it is not necessary to separately prepare a component for supporting the biasing member that biases the pin, and the number of components can be reduced and the manufacturing cost can be reduced.

[0068] The support portion of the pressing plate may have a contact portion that contacts the biasing member of the fixed cylinder and a plurality of leg portions that extend rearward from the contact portion. By extending a plurality of leg portions rearward from the contact portion of the support portion in this way, the support portion is easily deformed, so that the support portion is easily housed in the housing portion of the fixed cylinder.

[0069] The support portion of the pressing plate may have a claw portion that engages with an edge portion of the accommodating portion of the fixed cylinder. In this way, by engaging the claw portion of the support portion of the pressing plate with the edge portion of the accommodating portion of the base portion, it is possible to prevent the support portion of the pressing plate from falling off from the accommodating portion of the base portion.

[0070] The fixed cylinder may further have a protrusion extending in the axial direction from the contact surface, and a positioning hole into which the protrusion of the fixed cylinder is inserted may be formed in the pressing portion of the pressing plate. With such a configuration, it becomes easy to position the pressing plate with respect to the base portion of the fixed cylinder.

[0071] 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 implemented in various different forms within the scope of its technical idea.

Explanation of Reference Numerals

[0072] 1 Camera device 2 Front cover 3 Rear cover 4 Lens barrel 10 Fixed cylinder 11 Base 12 Cylindrical wall 13 Engagement piece 14 Through cam groove 15 Cam groove 16 Axial groove 20 Driving cylinder 21 Cylindrical portion 22 Extension portion 23 Arc piece 24 Axial groove 25 Circumferential groove 26 Communication groove 30 Cover cylinder 31 Cylindrical portion 32 Annular portion 34 Engagement portion 35 Hook portion 40 Rotating cylinder 41 Cylindrical portion 42 Actuating portion 43 Protrusion 44 Engagement piece 45 Cam groove 46 Communication groove 50 Key cylinder 51 Cylindrical part 52 Axial groove 53 Communication groove 54 Circumferential groove 55 Communication groove 58 Cover ring 60 Connecting frame 62 Engagement part 64 Protrusion 65 Frame part 70 Linear motion cylinder 71 Cylindrical part 72 Actuating part 75 Protrusion 90 Frame 101A~101F Inner surface 102A,102B Arc surface 103 Contact surface 104 Protrusion 105 Accommodating part 106 Pin 107 Coil spring (biasing member) 110 Rear light-shielding member 111 Front connecting part 112 Rear connecting part 112A~112D Outer surface 113 Bellows part 120 Front light-shielding member 121 Front connecting part 122 Rear connecting part 123 Bellows part 130,150,160 Mounting plate 140 Pressing plate 141 Pressing part 142 Expansion part 143 Support part 143A Contact part 143B Leg part 143C Claw part

Claims

1. A housing having an opening formed in the front, a frame housed inside the housing, a lens barrel that houses at least one lens, a fixed cylinder having a base fixed to the frame and a cylindrical wall extending axially from the base, a telescopic unit disposed radially inward of the cylindrical wall of the fixed cylinder and telescopic in the axial direction through the opening of the housing, a lens barrel including the telescopic unit, a light shielding member that prevents light from outside the lens barrel from entering the optical path from a part of the telescopic unit to the frame, a pressing plate that presses and fixes the light shielding member to the frame, and comprising, the light shielding member, a rectangular frame-shaped front connecting portion fixed to a part of the telescopic unit of the lens barrel, a rectangular frame-shaped rear connecting portion disposed between the pressing plate and the frame, and a bellows portion that telescopically connects between the front connecting portion and the rear connecting portion, having, the base of the fixed cylinder, an inner surface extending in a rectangular shape so as to face the outer surface of the rear connecting portion of the light shielding member, an arc surface extending outward in an arc shape from the inner surface along a part of the cylindrical wall, and a contact surface that contacts the front surface of the pressing plate, having, the pressing plate, a rectangular frame-shaped pressing portion extending along the inner surface of the base of the fixed cylinder and contacting the rear connecting portion of the light shielding member, and an extension portion extending outward from the pressing portion so as to face the arc surface of the base of the fixed cylinder, having, a camera device.

2. The camera device according to claim 1, wherein a part of the extension portion is formed thicker than the thickness of the pressing portion so as to be located outside the rear connecting portion of the light shielding member.

3. The lens barrel further includes a drive cylinder that drives the telescopic movement of the telescopic unit and is configured to be rotatable without moving in the axial direction with respect to the fixed cylinder. The drive cylinder, a cylindrical portion disposed radially outside the cylindrical wall of the fixed cylinder, and an arc piece extending radially outward from the cylindrical portion, the arc piece having a recess formed at a circumferential position corresponding to the telescopic state of the lens barrel, having, the fixed cylinder, a pin, a pin holding portion that holds the pin in a state movable in the axial direction, a biasing member that biases the pin toward the arc piece of the drive cylinder inside the pin holding portion, and a housing portion formed adjacent to the pin holding portion, further having, The pressing plate is housed in the housing portion of the fixed cylinder and further has a support portion that supports the biasing member of the fixed cylinder. The camera device according to claim 1 or 2.

4. The support portion of the pressing plate has a contact portion that contacts the biasing member of the fixed cylinder, and a plurality of leg portions that extend rearward from the contact portion. The camera device according to claim 3.

5. The support portion of the pressing plate has a claw portion that engages with an edge portion of the housing portion of the fixed cylinder. The camera device according to claim 3 or 4.

6. The fixed cylinder further has a protrusion that extends in the axial direction from the contact surface, and a positioning hole into which the protrusion of the fixed cylinder is inserted is formed in the pressing portion of the pressing plate. The camera device according to any one of claims 1 to 5. ​

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