JP2017146315A - Imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging device with which it is possible to prevent the breakage of the rotary shaft of a battery lid when subjected to a mechanical shock by dropping, etc.SOLUTION: The imaging device comprises: a grip protruding from the body of the imaging device; an openable/closable battery lid 10 disposed across the imaging device and the grip; a bottom cover 4 disposed on the bottom of the imaging device; a rotary shaft presser member for fixing a portion of the rotary shaft of the battery lid 10 to the imaging device; a battery lid rotary shaft fitting hole 20 formed by the tip of the rotary shaft presser member and the bottom cover 4; a shaft member 13 retractable from the battery lid 10; a conical part 13e formed on the shaft member 13; a cylindrical first rotary shaft 13a formed closer to the tip side than is the conical part 13e and approximately parallel to the photographing optical axis; and a second rotary shaft 10a substantially coaxial with the first rotary shaft 13a. The first rotary shaft 13a is disposed on the front side of the body of the imaging device and is cylindrical in shape not having sliding relationship with the battery lid rotary shaft fitting hole 20, and the conical part 13e is contact with a corner 20a of the battery lid rotary shaft fitting hole 20.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a battery lid structure of an image pickup apparatus that can store a driving battery in a housing, and more particularly to an attachment structure and a holding structure of a battery lid for the image pickup apparatus.

  2. Description of the Related Art Conventionally, there is an image pickup apparatus having a lid that can be opened and closed by a user, such as a battery lid for closing an opening of a battery housing portion provided inside a housing. Among imaging devices having a lid that can be opened and closed with respect to the housing, there is an imaging device having a structure in which the lid can be removed from the housing by a special operation in addition to a normal opening and closing operation.

  For example, in an imaging device that can insert an external power supply larger than a normally used battery into the battery compartment, when the battery cover is opened and the external power supply is attached to the battery compartment, a part of the external power supply Projects from the battery compartment. Therefore, there arises a problem that the battery lid and the external power supply device interfere with each other. In order to avoid this interference, there has been known an imaging device having a lid holding structure that allows a battery lid to be removed from a casing by an operation of removing the battery lid when an external power supply device is attached to the battery housing.

  Further, the following has been proposed as an imaging apparatus having a casing that can be detached from the casing as described above (see Patent Document 1). In the imaging device described in Patent Document 1, the housing is provided with an opening into which the battery lid is fitted, and at least a pair of holes are formed in the inner wall of the opening. Protrusions that engage with a pair of holes in the inner wall of the opening are rotatably formed on the side surface of the battery lid. Since one of the protrusions forming the rotation axis can be retracted into the battery lid by the user's operation, the engagement can be released.

JP 2011-55065 A

  A portable imaging device such as a digital camera may be accidentally dropped because it is carried by the user.

  However, in an imaging apparatus having a removable lid as shown in the above conventional example, one of the protrusions forming the rotation axis is movable in the forward / backward direction, but in a direction orthogonal to the forward / backward direction. Is fixed, although it is pivotable.

  Hereinafter, a description will be given with reference to FIG.

  14A and 14B are diagrams showing a battery lid of the imaging device according to the conventional example and a holding configuration thereof. FIG. 14A is a bottom view of the imaging device 100 according to the conventional example, and FIG. 14B is an external view of the battery lid 110. FIG. 4C is a partial cross-sectional view taken along line ZZ in FIG.

  In FIG. 14, reference numeral 130 denotes a revolving shaft that can be advanced and retracted, 400 a bottom surface cover as an exterior cover, and 700 a revolving shaft pressing member. As shown in FIG. 14C, the rotation shaft 130 of the battery lid 110 is housed and held in a hole formed by the bottom cover 400 and the rotation shaft pressing member 700. Therefore, when a shearing force perpendicular to the direction in which the rotation shaft 130 can advance and retract is applied to the rotation shaft 130 due to a drop impact or the like, the rotation shaft 130 may be damaged. This is because the rotation shaft 130 is held with no degree of freedom with respect to the direction orthogonal to the advancing and retracting direction.

  Further, in order to prevent the rotation shaft from being damaged, it is possible to form the rotation shaft from metal or the like, but the cost increases.

  Accordingly, an object of the present invention is to provide a battery lid structure of an imaging device and an imaging device that can prevent damage to the rotating shaft of the battery lid even when an impact is applied due to dropping or the like.

In order to achieve the above object, an imaging apparatus according to the present invention includes:
A grip (3) protruding from the imaging device (1) body;
An openable and closable battery lid (10) disposed across the imaging device (1) and the grip (3);
A bottom cover (4) disposed on the bottom surface of the imaging device (1);
A rotating shaft pressing member (7) for fixing a part of the rotating shaft of the battery lid (10) to the imaging device (1);
A battery lid rotation shaft fitting hole (20) formed by the tip end portion (7a) of the rotation shaft pressing member (7) and the bottom surface cover (4);
A shaft member (13) capable of moving back and forth with respect to the battery lid (10);
A conical portion (13e) formed on the shaft member (13);
A cylindrical first rotation shaft (13a) formed on the shaft member (13) and on the tip side of the conical portion (13e) and substantially parallel to the imaging optical axis (2a);
A second rotation axis (10a) formed on the battery lid (10) and substantially coaxial with the first rotation axis (13a);
Have
The first rotation shaft (13a) is disposed on the front side of the main body of the imaging device (1) and has a cylindrical shape that is not in sliding relation with the battery lid rotation shaft fitting hole (20). The conical portion (13e) is in contact with a corner portion (20a) of the battery lid rotation shaft fitting hole (20).

  ADVANTAGE OF THE INVENTION According to this invention, when an impact is added by dropping etc., the imaging device which can prevent damage to the rotating shaft of a battery cover can be provided.

(A) is a front view of the imaging device according to the present embodiment, (b) is a bottom view of the imaging device according to the present embodiment. (A) is a front view of the imaging device in a state where the battery lid is opened, and (b) is a bottom view of the imaging device in a state where the battery lid is opened. (A) is an external view of the battery cover, (b) is an internal view of the battery cover. (A) is an internal view of the battery lid with the battery lid cover removed, and (b) is an exploded perspective view of the battery lid. Explanatory drawing of the operation of the battery lid locking claw Explanatory drawing of operation of shaft member (A) is a bottom view of the imaging device with the battery lid removed, and (b) is a partial cross-sectional view taken along line DD shown in FIG. 7 (a). Exploded perspective view showing mounting structure of shaft pressing member Partial detail of the first pivot (A) is the figure which shows the state which fell from the front-end | tip of a grip, (b) is the figure which showed typically the force concerning a battery cover. (A) is a fragmentary sectional view which follows the AA line of FIG. 1, (b) is a fragmentary sectional view which shows the position change of the 1st rotating shaft 13a. (A) is a bottom view of the image pickup apparatus according to Embodiment 2 with a battery cover removed, and (b) is a partial cross-sectional view taken along line KK in FIG. 12 (a). (A) is a bottom view of the image pickup apparatus according to the second embodiment, (b) is a partial cross-sectional view taken along line LL in FIG. 13 (a), and (c) is a positional change of the first rotation shaft 13a. Partial sectional view (A) is a bottom view of the imaging device according to the conventional example, (b) is an external view of the battery cover of the imaging device according to the conventional example, and (c) is a partial cross section taken along the line ZZ in FIG. Figure

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  1A and 1B are views showing the appearance of a single-lens reflex digital camera which is an example of an imaging apparatus according to an embodiment of the present invention, where FIG. 1A is a front view and FIG. 1B is a bottom view.

  An imaging apparatus according to an embodiment of the present invention is, for example, a single-lens reflex digital camera (hereinafter, camera) 1 that uses a battery as a power source. Reference numeral 2 denotes an interchangeable lens that can be removed from the camera 1, 2a denotes a photographing optical axis, 3 denotes a grip for a user to hold the camera 1, and 4 denotes a bottom cover as an exterior cover. Reference numeral 10 denotes a battery cover that is attached to the camera 1 so as to be openable and closable, and covers the battery storage unit, and is rotatable about a rotation axis 9. The state shown in FIG. 1 shows a state in which the battery lid 10 is locked to the bottom cover 4. Reference numeral 11a denotes a lock release lever for releasing the lock of the battery cover 10 from the camera 1, which will be described later.

  2A and 2B are external views of the image pickup apparatus showing a state in which the battery lid 10 is opened. FIG. 2A is a front view and FIG. 2B is a bottom view.

  Reference numeral 5 denotes a battery as a power source for the camera 1, and reference numeral 6 denotes a battery locking claw for restricting the battery 5 from popping out. By rotating the battery latching claw 6 in the upward direction of FIG. 2B (not shown), the latching with respect to the battery 5 is released, and the battery 5 can be inserted into and removed from the camera 1. As shown in FIG. 2, the grip 3 characteristic of a single-lens reflex camera uses the protruding shape to form a battery housing. Accordingly, since the battery 5 is disposed across the protruding grip 3 and the camera 1, as a result, as shown in FIGS. 1 and 2, the battery cover 10 also straddles the grip 3 and the camera 1 and rotates. The axis 9 is in a substantially parallel relationship with the photographing optical axis 2a.

  Next, the detailed structure of the battery cover 10 will be described with reference to FIGS.

  FIG. 3A is an external view of the battery lid 10 and shows a state in which the battery lid 10 is locked to the camera 1. FIG. 3B is an internal view of the battery lid 10 as seen from the direction of arrow T in FIG. 4A is an internal view of the battery lid 10 with a battery lid cover described later removed, and FIG. 4B is an exploded perspective view of the battery lid 10. FIG. 5 is a view showing a state where the battery cover 10 is unlocked from the bottom cover 4, and FIG. 6 is a view showing a state when the battery cover 10 is removed from the camera 1.

  First, the attachment structure and function of the battery lid locking claw 11 will be described.

  The battery lid locking claw 11 is a member that locks the battery lid 10 to the bottom cover 4, and the battery lid locking claw 11 is locked to a not-shown locked portion of the bottom cover 4. The state where the battery cover 10 is closed is maintained. A spring shaft 11b is formed on the battery lid latching claw 11 (FIG. 4).

  The battery lid latching claw 11 is attached to the battery lid 10 with the latching spring 12 inserted in the direction of arrow B in FIG. 3B with respect to the spring shaft 11b, and the latching spring 12 is stored in the latching spring. The groove 10b is stored in a compressed state. The locking spring 12 is a compression spring, and is always urged upward in FIG. 3 and FIG. 4 so that the tip of the battery lid locking claw 11 protrudes from the battery lid 10. Hold closed and closed.

  When unlocking the battery lid 10, the latch release lever 11 a formed on the battery lid latching claw 11 shown in FIGS. 3A and 5A is connected to the arrow in FIG. 5A. Operate in the E direction. 5A and 5B show the battery lid 10 in a state where the latch release lever 11a is operated and the battery lid latching claw 11 is unlocked from the bottom cover 4. FIG.

  As described above, the battery lid locking claw 11 is attached to the battery lid 10 so as to be movable in one direction. In this embodiment, a coil spring is used to urge the battery lid latching claw 11, but it may be urged by other means.

  Next, the mounting structure and function of the shaft member 13 will be described.

  The shaft member 13 shown in FIGS. 3 to 6 is a separate member from the battery lid 10, and in this embodiment, the first rotation shaft 13 a that forms one side of the rotation shaft of the battery lid 10 is provided. Have. The first rotation shaft 13 a is substantially coaxial with the second rotation shaft 10 a formed on the battery lid 10. The rotation shaft 9 is obtained by connecting the center of the first rotation shaft 13a and the center of the second rotation shaft 10a.

  The shaft member 13 is formed with a spring shaft 13b. The shaft member 13 is inserted into the spring shaft 13b in the direction indicated by the arrow C in FIG. Attached to. Specifically, the fitting portion 13 c of the shaft member 13 is inserted into the fitting hole 10 c of the battery lid 10, and the fixed end 14 d of the shaft biasing spring 14 inserted into the spring shaft 13 b is connected to the battery lid 10. Is stored in the fixed end storage groove 10d. The shaft urging spring 14 is a compression spring, and always urges the shaft member 13 in the left direction in FIG.

  The shaft member 13 has a shaft member moving lever 13d. When the shaft member moving lever 13d is operated in the right direction in the drawing of FIG. 4 against the urging force of the shaft urging spring 14, as shown by the chain line in FIG. Retreat into the fitting hole 10 c of the lid 10. That is, since the first rotation shaft 13 a does not protrude from the battery lid 10, the battery lid 10 can be detached from the camera 1. The battery cover 10 is removed when an external power supply (not shown) or the like is attached to the camera 1.

  Subsequently, the battery lid cover 15 is fastened to the battery lid 10 with screws 16a, 16b, and 16c. A hole 15a is formed in the electric edge cover 15, and the shaft member moving lever 13d can be operated by inserting the shaft member moving lever 13d.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

  7A is a bottom view of the camera 1 in a state where the battery cover 10 is removed, FIG. 7B is a partial cross-sectional view of a rotation shaft holding portion of the battery cover 10, and FIG. FIG. 6 is an exploded perspective view showing a mounting structure of the member 7.

  The partial cross-sectional view shown in FIG. 7B is a cross-sectional view taken along the line DD in FIG. The battery lid rotation shaft fitting hole 20 shown in FIG. 7B is a hole for fitting the first rotation shaft 13a of the battery lid 10. The battery lid rotation shaft fitting hole 20 is similarly formed on the opposite side (camera back side) (not shown), and the second rotation shaft 10a shown in FIGS. To do. In the present embodiment, the battery lid rotation shaft fitting hole 20 is formed by the rotation shaft pressing member 7 fastened to the bottom surface cover 4 by screws 8 a and 8 b and the bottom surface cover 4. You may form only with the cover 4. FIG. As described above, the battery cover 10 is attached to the camera 1 so as to be rotatable and openable / closable.

  FIG. 9 is a partial detailed view of the first rotating shaft 13a, FIG. 10 (a) is a diagram showing a state in which the camera 1 is dropped from the tip of the grip 3, and FIG. It is the figure which showed this force typically. 11 is a partial cross-sectional view taken along the line AA in FIG. 1. FIG. 11A shows a state in which the battery cover 10 is attached to the camera 1, and FIG. It is sectional drawing which shows the position change of the battery cover 10 at the time of falling from the front-end | tip, especially the 1st rotation axis | shaft 13a.

  As shown in FIG. 9, a conical portion 13e is formed on the first rotation shaft 13a. In a state where the battery cover 10 is attached to the camera 1, as shown in FIG. 11A, it is in contact with the corner 20 a of the battery cover rotation shaft fitting hole 20. As described above, since the shaft member 13 is constantly urged by the shaft urging spring 14 in the direction in which the first rotation shaft 13a protrudes from the battery lid 10, the conical portion 13e always has a corner portion. 20a abuts. Therefore, the first rotation shaft 13a and the battery lid rotation shaft fitting hole 20 are not in a sliding relationship but have a gap.

  In the description of the present embodiment, the contact portion of the conical portion 13e is a corner portion, but R or chamfering may be added to the corner portion.

  By the way, portable devices such as digital single-lens reflex cameras may be accidentally dropped because they are carried by the user. In particular, in the case of a digital single-lens reflex camera, a battery 5 is mounted in the grip 3 and a heavy object such as the interchangeable lens 2 is mounted on the front side of the camera 1, so that the camera 1 as shown in FIG. There is a possibility of falling in a slightly tilted state.

  At that time, since the camera 1 receives an impact near the tip of the protruding grip 3, that is, from the direction of arrow P shown in FIG. A clockwise rotational moment M around 10a is generated. When this rotational moment M is generated, the first rotation shaft 13a tends to move in the direction of the arrow G shown in FIG. 11A (the direction toward the photographing optical axis 2a). When the first rotation shaft 13a moves in the direction of arrow G, the conical portion 13e as the contact portion receives a reaction force f from the corner portion 20a as shown by an arrow f in FIG. Become.

  In such a state, according to the first embodiment of the present invention, the conical portion 13e that receives the reaction force f is an inclined surface. Therefore, as shown in FIG. It is decomposed into fv and fh. As described above, since the shaft member 13 can advance and retreat, the component force fv is converted into a force that moves the shaft member 13 in the direction of arrow J in FIG. At the same time, when a component force fh is applied to the conical portion 13e, a relative slip occurs with respect to the corner portion 20a. Therefore, as shown in FIG. a) in the direction of arrow G).

  Since the first pivot shaft 13a and the battery lid pivot shaft fitting hole 20 have a gap, the first pivot shaft 13a can be moved by the gap, and the breaking direction (component force fh) applied to the first pivot shaft 13a. ) Direction). In the present embodiment, the material of the shaft member 13 is a resin such as polycarbonate, but as explained, it is possible to disperse the stress f applied to the first rotating shaft 13a without locally concentrating it. Therefore, damage to the first rotating shaft 13a can be avoided.

  In addition, the battery cover 10 rotates relative to the bottom cover 4 around the second rotation shaft 10a, but the first rotation shaft 13a is connected to the battery cover rotation shaft fitting hole. Therefore, it is possible to prevent the battery cover 10 from being detached from the camera 1 when a drop impact is applied. In this embodiment, the shaft member 13 that can be advanced and retracted is arranged on the front side of the camera. However, it is sufficient that at least the rotation shaft on the front side of the camera can be advanced and retracted, and the rotation on the back side of the camera is possible. The shaft (second rotating shaft 10a) may also be configured separately from the battery cover 10 and capable of moving back and forth.

  As described above, according to the first embodiment of the present invention, when the user inadvertently drops the camera, the battery cover can be prevented from being damaged and the battery cover can be prevented from being damaged. It is also possible to prevent the dropout.

  Hereinafter, the second embodiment of the present invention will be described with reference to FIGS. About the member which is common in Example 1, the same code | symbol is attached | subjected.

  12A is a bottom view of the imaging apparatus according to the second embodiment of the present invention in a state where the battery lid 10 is removed, and FIG. 12B is a partial cross-sectional view taken along the line KK of FIG. It is. FIG. 13A is a bottom view of an imaging apparatus according to the second embodiment of the present invention, FIG. 13B is a partial cross-sectional view taken along line LL, and FIG. 13C is a first rotating shaft. It is a fragmentary sectional view around 13a.

  Reference numeral 40 denotes a bottom cover according to the second embodiment of the present invention, and reference numeral 70 denotes a rotating shaft pressing member. Since the attachment structure of the rotating shaft pressing member to the bottom cover is the same as that of the first embodiment, the description of the attachment structure is omitted.

  As shown in FIGS. 12B, 13B, and 13C, the bottom cover 40 and the rotation shaft pressing member 70 are each closer to the optical axis 2a than the first rotation shaft 13a. The horizontal portion 40c and the second horizontal portion 70c are formed. A space 50 formed by the first horizontal portion 40c and the second horizontal portion 70c facing each other is an escape portion of the first rotating shaft 13a.

  As described with reference to FIGS. 10 and 11 in the first embodiment, when the camera 1 is inadvertently dropped and an impact is applied from the direction of the arrow P, the battery lid 10 is moved to the second rotation axis. Attempts to rotate clockwise about 10a. In particular, when a heavy lens such as a telephoto lens is attached or when the lens is dropped from a high place, the impact from the direction of the arrow P becomes even greater.

  Even in such a case, according to the second embodiment of the present invention, as shown in FIG. 13C, the first rotating shaft 13a moves in the direction of the arrow Q in the figure, and the relief portion 50, the shearing force does not act on the first rotating shaft 13a, and breakage can be avoided. Further, as described above, the shaft member 13 can be moved back and forth, and is always urged in the protruding direction with respect to the battery lid 10, so that even if the shaft member 13 moves to the position indicated by the broken line in FIG. Return to the original position.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

1 Camera, 2a Shooting optical axis, 3 grip, 4 Bottom cover, 5 Battery,
7 rotating shaft pressing member, 7a tip portion, 10 battery cover 10, 10a second rotating shaft,
13 axis member, 13a first rotation axis, 13e conical part, 20 battery lid rotation axis fitting hole,
20a Corner

Claims (2)

A grip (3) protruding from the imaging device (1) body;
An openable and closable battery lid (10) disposed across the imaging device (1) and the grip (3);
A bottom cover (4) disposed on the bottom surface of the imaging device (1);
A rotating shaft pressing member (7) for fixing a part of the rotating shaft of the battery lid (10) to the imaging device (1);
A battery lid rotation shaft fitting hole (20) formed by the tip end portion (7a) of the rotation shaft pressing member (7) and the bottom surface cover (4);
A shaft member (13) capable of moving back and forth with respect to the battery lid (10);
A conical portion (13e) formed on the shaft member (13);
A cylindrical first rotation shaft (13a) formed on the shaft member (13) and on the tip side of the conical portion (13e), and parallel to the photographing optical axis (2a);
A second rotation axis (10a) formed on the battery lid (10) and coaxial with the first rotation axis (13a);
Have
The first rotation shaft (13a) is disposed on the front side of the main body of the imaging device (1) and has a cylindrical shape that is not in sliding relation with the battery lid rotation shaft fitting hole (20). The conical portion (13e) is in contact with a corner portion (20a) of the battery lid rotating shaft fitting hole (20). The bottom cover (4) is a first horizontal portion (40c) and the shaft pressing member (7) is a second side closer to the photographing optical axis (2a) than the battery lid rotation shaft fitting hole (20). The imaging apparatus according to claim 1, further comprising a horizontal portion (70c).