JP2021124598A - Imaging apparatus - Google Patents

Abstract

To provide an imaging apparatus in which a user cannot easily exchange a lens without a tool.SOLUTION: There is provided an imaging apparatus 100 to which a lens device is removably attached. The imaging apparatus 100 has a lens lock pin 102 that can be switched between a state where it projects toward a camera mount 102 and a state where it is retracted from the camera mount, a member to be pushed down that is pushed down to perform the switching of the lens lock pin 102, and a cover member 103 that is provided on an external member 104 to cover the member to be pushed down. The cover member 103 has a hole part allowing access to the member to be pushed down from the outside.SELECTED DRAWING: Figure 1

Description

The present invention relates to an imaging device.

As an example of an imaging device, an interchangeable lens camera having a lens lock button and a mechanism for enabling lens exchange by pressing the lens lock button has been proposed. Conventionally, the interchangeable lens type camera has a problem that dust enters the inside of the camera body when the lens is replaced. For example, when renting a camera to a user or displaying it for sale, if the lens is removed from the camera body, dust will enter the inside of the camera body. Patent Document 1 discloses an imaging device that reads a fingerprint with a lens lock button pressed down, performs fingerprint authentication processing, and unlocks a lens mounted on a camera body based on the result of the fingerprint authentication processing. There is.

Japanese Unexamined Patent Publication No. 2012-159627

The imaging device disclosed in Patent Document 1 requires a device such as a fingerprint sensor required for fingerprint authentication processing, resulting in high cost. An object of the present invention is to provide an image pickup apparatus in which a user cannot easily change a lens without a tool.

The imaging device according to the embodiment of the present invention is an imaging device to which the lens device can be attached and detached, and includes a lock member capable of switching between a state in which the lens device is attached and detached and a state in which the lens device is projected or retracted with respect to a mounting surface. It has a pushed-down member that switches the lock member by being pushed down, and a cover member that is fixed to the exterior member of the imaging device and covers the pushed-down member. The cover member has a hole that allows the pushed-down member to be accessed from the outside.

According to the present invention, it is possible to provide an imaging device in which a user cannot easily change lenses without a tool.

This is an example of a front view of the image pickup apparatus. It is a figure which shows the cross section of a lens lock mechanism. It is a figure explaining the retracting method of a lens lock pin. It is a figure explaining the lens lock mechanism when a button is applied. It is a figure which shows the structure of the main component of a lens lock mechanism. It is a figure explaining the operation of inserting a tool pin into a long hole part. It is a figure explaining the operation from inserting into a tool pin elongated hole part to pushing down a push-down member. This is an example of a perspective view of the cover member. It is sectional drawing of a cover member. It is a figure explaining the tool pin. It is a figure explaining the method of retracting a lens lock pin. It is a front view of the image pickup apparatus. It is sectional drawing of the lens lock mechanism. It is a figure explaining the method of retracting a lens lock pin.

(Example 1)
FIG. 1 is an example of a front view of the image pickup apparatus of this embodiment.
An interchangeable lens (lens device) (not shown) can be attached to and detached from the image pickup device 100 shown in FIG. For this purpose, the imaging device 100 has a camera mount 101 to which an interchangeable lens is mounted. The lens lock pin 102 is a lock member arranged on the camera mount 101. The lens lock pin 102 can be switched to a protruding state or a retracted state with respect to the mounting surface of the camera mount 101 that comes into contact with the mounting of the interchangeable lens. When the lens lock pin 102 is in a protruding state with respect to the mount surface, the interchangeable lens mounted on the image pickup apparatus 100 is locked. When the lens lock pin 102 is switched to the retracted state with respect to the mount surface, the interchangeable lens is unlocked.

Further, the image pickup apparatus 100 has an exterior member 104, and the exterior member 104 is provided with a cover member 103 in the vicinity of the camera mount 101. In the present embodiment, the left-right direction of the image pickup apparatus 100 is defined as the X-axis, the vertical direction is defined as the Y-axis, the depth direction, that is, the direction parallel to the optical axis is defined as the Z-axis, and the arrow direction of each axis is defined as the plus direction as shown in the figure. .. For example, a bayonet type mount is applied as a mounting mechanism used for attaching / detaching an interchangeable lens, but the scope of application of the present invention is not limited to the bayonet type mount. In the following description, taking a camera rental system as an example, a user is, for example, a person who borrows a camera, uses it for shooting, and returns it after use. Further, the operator is, for example, a system using an automatic lens changing device that performs work such as lens changing using a tool after the camera is returned.

FIG. 2 is a diagram showing a cross section of a lens lock mechanism included in the image pickup apparatus of the first embodiment.
In the lens lock mechanism, the pressed down member 105 switches the state of the lens lock pin 101 from the protruding state to the retracted state by being pushed down. The lens lock pin 102 may be integrally formed with the pressed member 105 having the pressed portion 106.

The lens lock pin 102 is urged in the + Z direction by a spring 107 arranged in the housing 108. The cover member 103 is fixed to the exterior member 104 by a fastener 109 so as to cover the pressed member 105, and prevents the pressed member 105 from being exposed to the outside. Further, the cover member 103 has a hole portion 110 above the pressed down portion 106 of the pressed down member 105 (in the + Z direction). The hole 110 is formed along the pressing direction (−Z direction) of the pressed portion 106. The hole 110 has a size sufficiently small with respect to a human finger, and the human finger cannot contact the pressed portion 106 of the pressed member 105 through the hole 110. However, as will be described later, the operator can use the tool. The pressed-down portion 106 can be accessed from the outside through the hole 110 using a pin.

FIG. 3 is a diagram illustrating a method of retracting the lens lock pin 102 in the first embodiment.
In order to bring the lens lock pin 102 into the retracted state, it is necessary to move the pressed member 105 against the spring 107 in the −Z direction. In order to move the pressed down member 105 in the −Z direction, a tool pin 111 smaller than the hole size of the hole 110 is used. In order to move the pressed down member 105 in the −Z direction, the operator inserts the tool pin 111 through the hole 110 of the cover member 103 and moves the pressed down portion 106 of the pressed down member 105 in the −Z direction. Press. The lens lock pin 102 is retracted by pushing the pressed down portion 106 with the tool pin 111 until the lens lock pin 102 moves below the contact surface of the camera mount 101 with the lens mount (-Z direction in the figure). Can be made to.

FIG. 4 is a diagram illustrating a lens lock mechanism when a button is applied instead of the cover member.
FIG. 4A shows a lens lock pin 102 protruding state. Further, FIG. 4B shows a lens lock pin 102 retracted state. In the lens lock mechanism shown in FIGS. 4A and 4B, the camera mount 101, the lens lock pin 102, the exterior member 104, the pressed member 105, the spring 107, and the housing 108 are the lens lock mechanism shown in FIG. It is the same as each member of. In the lens lock mechanism shown in FIGS. 4A and 4B, the cover member 103 of the lens lock mechanism shown in FIG. 3 is replaced with the button 121. Further, the lens lock mechanism shown in FIGS. 4A and 4B has a spring 122 that urges the button 121 in the + Z direction.

As shown in FIG. 4B, when the user pushes down the button 121 in the −Z direction, the button 121 moves the pressed down portion 106 of the pressed down member 105 in the −Z direction, and the lens lock pin 102 moves. evacuate. That is, in the lens lock mechanism shown in FIGS. 4A and 4B, the user can easily replace the lens without using a tool, and dust is mixed in the image pickup device 100 or the image pickup device 100 is damaged. I may do it.

On the other hand, in the lens lock mechanism of the first embodiment described with reference to FIG. 3, the cover member 103 covers the pressed member 105 to prevent the pressed member 105 from being exposed to the outside. Further, in the lens lock mechanism of the first embodiment, the hole portion 110 provided in the cover member 103 makes the pressed-down portion 106 accessible from the outside. Therefore, the lens lock mechanism of the first embodiment can prevent the user from easily changing the lens, and can change the lens by the operator using a tool.

(Example 2)
The image pickup apparatus of the second embodiment will be described with reference to FIGS. 5 to 7. FIG. 5 is a diagram showing an example of the configuration of the main parts of the lens lock mechanism, and shows a state in which only the parts related to the description of the invention are viewed from the −Z direction. Among the component parts of the second embodiment, the only component different from the first embodiment is the cover member 201, and the same parts as those of the first embodiment are numbered the same.

The cover member 201 has an elongated hole portion 202, which is a hole portion formed in an elongated hole shape at a position different from the position of the pressed portion 106 of the pressed down member 105. Specifically, the position of the elongated hole portion 202 is a position separated from the pressed down portion 106 by a distance corresponding to L1. In the example shown in FIG. 5, the length of the elongated hole shape of the elongated hole portion 202 is L2. The elongated hole portion 202 has a straight portion and arc portions at both ends thereof, and L2 indicates the length of the straight portion of the elongated hole portion 202. Further, the Y coordinate position of the point p indicating the center of the pressed down portion 106 and the Y coordinate position of the point q indicating the center of the arc at the lower end in FIG. 5 of the elongated hole portion 202 are substantially the same. The relationship between L1 and L2 is L1 ≦ L2.

Next, a method of retracting the lens lock pin 102 in the second embodiment will be described with reference to FIGS. 6 and 7. FIG. 6 is a diagram illustrating an operation of inserting the tool pin 203 into the elongated hole portion 202 of the cover member 201 in the second embodiment.
The tool pin 203 is bent 90 ° at the bending point s, and is bent 90 ° at the bending point t in the direction opposite to the bending direction at the bending point s. The distance L3 between the point s and the point t is substantially the same as the distance L1 between the pressed down portion 106 and the elongated hole portion 202 shown in FIG. Since the distance L3 (≈L1) between the point s and the point t is shorter than the length L2 of the elongated hole portion 202, the tool pin 203 can be inserted into the elongated hole portion 202.

FIG. 7 is a diagram illustrating an operation from inserting the tool pin 203 into the elongated hole portion 202 of the cover member 201 to pushing the pressed down member 105 in the second embodiment. FIG. 7 shows a state in which only the parts related to the description of the invention are viewed from the −Z direction, as in FIG.
FIG. 7A shows a state in which the tool pin 203 is inserted into the elongated hole portion 202 of the cover member 201. FIG. 7B shows a state in which the tool pin 203 is rotated and moved onto the pressed portion 106 of the pressed member 105.

In order to change from the state shown in FIG. 7 (A) to the state shown in FIG. 7 (B), the operator sets the tool pin 203 around the Z-axis around the bending point t in the counterclockwise direction in the figure 90. ° Rotate. The position of the bending point t of the tool pin 203 is at the position of the point q of the elongated hole portion 202, and since L1≈L3, the position of the point p of the pressed down portion 106 and the position of the bending point s of the tool pin 203 are It will be almost the same position. Therefore, the tool pin 203 can push the pressed-down portion 106 of the pressed-down member 105. According to the configuration of the second embodiment, it is necessary to use the tool pin 203 having a bending point in order to push the pressed down member 105. Therefore, as compared with the configuration of the first embodiment, the lens can be replaced without a tool. It can be more difficult.

(Example 3)
The image pickup apparatus of the third embodiment improves the appearance quality while making it difficult for the user to change the lens without using a tool. Hereinafter, the imaging apparatus of the third embodiment will be described with reference to FIGS. 8 to 10.

FIG. 8 is an example of a perspective view of the cover member 301 in the third embodiment.
Among the components of the image pickup apparatus of the third embodiment, the cover member 301 is the only component that is different from the components of the image pickup apparatus of the first and second embodiments. The cover member 301 has an elongated hole portion 302 as a hole portion. The elongated hole portion 302 is formed from the upper surface 303 to the side surface 304 of the cover member 301.

FIG. 9 is a cross-sectional view of the cover member 301 according to the third embodiment.
The cross section shown in FIG. 9 is a cross section parallel to the XZ plane and passing through the center of the elongated hole portion 302. In FIG. 9, for convenience of explanation, the lens lock pin 102 and the pressed member 105 are also shown. The elongated hole portion 302 has a straight line portion and arcuate portions at both ends of the straight line portion. One end 305 of the straight portion is on the upper surface side (side of the upper surface 303), and the other end 306 is on the side surface side (side of the side surface 304). The inside of the cover member 301 is hollow. The inner wall 307 is a portion of the wall surface portion forming the cavity on the outer surface 304 side of the cover member 301. The position of the end portion 305 in the cover member 301 in the X direction is inside (−X direction) by L4 with respect to the position of the inner wall 307 in the X direction.

The cover member 301 has a space above the pressed-down portion 106 of the pressed-down member 105 (in the + Z direction) with the end portion 308 as the upper end. The position of the end portion 306 of the elongated hole portion 302 in the cover member 301 is inside (−Z direction) by L5 minutes from the position of the end portion 308. Further, the distance between the end portion 305 and the point p of the pressed down portion 106 in the X direction is defined as L6.

FIG. 10 is a diagram illustrating a tool pin 309 used for retracting the lens lock pin 102 in the third embodiment.
The tool pin 309 includes a push-down portion 310 that pushes down the push-down portion 106 of the push-down member 105. The tool pin 309 has a first region 311 extending vertically from the pressing portion 310 in the Z-axis direction, a second region 312 bent 90 ° from the first region 311 and a second region 312 bent 90 °. It has a third region 313 parallel to the first region 311. The cross section of each region is circular. The width of the first region 311 in the X direction is L7, and L7 ≦ L4 with respect to L4 shown in FIG. The width of the third region 313 in the X direction is L8, and L8 ≦ L4 with respect to L4 shown in FIG. The width of the second region 312 in the Z direction is L9, and L9 ≦ L5 with respect to L5 shown in FIG. The distance from the end of the third region 313 in the −X direction to the center of the pressing portion 310 is L10, and L10≈L6 with respect to L6 shown in FIG. When the tool pin 309 is formed by bending a cylindrical object twice, the condition is L7 = L8 = L9, but this condition is not essential in the present invention.

FIG. 11 is a diagram illustrating a method of retracting the lens lock pin 102 in the third embodiment.
FIG. 11A shows a state before the tool pin 309 is inserted into the cover member 301. The operator adjusts the position of the tool pin 309 so that the position of the end portion of the first region 311 in the −X direction is the position of the end portion 305 of the cover member 301. When the adjustment of the position of the tool pin 309 is completed, the operator moves the tool pin 309 in the −Z direction so as to be in the state shown in FIG. 11 (B). The state shown in FIG. 11B is a state in which the end portion of the second region 312 of the tool pin 309 in the −Z direction comes into contact with the end portion 306 of the cover member 301. Since L7 ≦ L4, the first region 311 passes through the elongated hole portion 302 of the cover member 301 and moves into the cavity of the cover member 301.

When the movement of the cover member 301 of the first region 311 into the cavity is completed, the operator moves the tool pin 309 in the −X direction so as to be in the state shown in FIG. 11 (C). The state shown in FIG. 11C is a state in which the position of the end portion of the third region 313 of the tool pin 309 in the −X direction is the position of the end portion 305 of the cover member 301. The −Z end of the second region 312 of the tool pin 309 moves along the end 306 of the cover member 301. Then, the position of the end portion of the third region 313 in the −X direction becomes the position of the end portion 305 of the cover member 301. At this time, since L9 ≦ L5, the position of the end portion of the second region 312 in the + Z direction is located in the −Z direction with respect to the end portion 308 of the cover member 301. When the movement of the tool pin 309 is completed, L10≈L6, so that the first region 311 is located on the pressed portion 106 of the pressed member 105. After the state shown in FIG. 11 (C) is reached, the operator moves the tool pin 309 in the −Z direction so as to be in the state shown in FIG. 11 (D). The state shown in FIG. 11D is a state in which the pressing portion 310 of the tool pin 309 is in contact with the point p on the pressed portion 106 of the pressed member 105. By further moving the tool pin 309 in the −Z direction from the state shown in FIG. 11 (D), the pressed down member 105 moves in the −Z direction. As a result, the lens lock pin 102 can be retracted. According to the configuration of the third embodiment described above, it is possible to improve the appearance quality of the image pickup apparatus while making it difficult for the user to change the lens without using a tool.

(Example 4)
The image pickup apparatus of the fourth embodiment improves the appearance quality while making it difficult for the user to change the lens without using a tool. Hereinafter, the imaging apparatus of the fourth embodiment will be described with reference to FIGS. 12 to 14.

FIG. 12 is a front view of the image pickup apparatus 400 of the fourth embodiment. Further, FIG. 13 is a cross-sectional view of the lens lock mechanism according to the fourth embodiment.
In the above-described first to third embodiments, the cover member is arranged as a member for covering the pressed-down member 105, but in the fourth embodiment, the button member (button) 401 shown in FIG. 12 is arranged. As shown in FIG. 13, the button member 401 is accommodated in the accommodating portion (button accommodating portion) 404 of the exterior member 402 of the image pickup apparatus 400 so as to cover the pressed down member 105, and is accommodated in the + Z direction by the spring 403. Being urged. Then, the button 401 can move in the same direction as the moving direction of the pressed down member 105. The shape of the exterior member 402 is substantially the same as the shape of the exterior member in Examples 1 to 3 described above, although there are some differences in shape.

As shown in FIG. 13, the button 401 urged in the + Z direction by the spring 403 is fixed in position by the fastener 109. The top surface of the button 401 is located lower than the upper surface of the inner wall (dotted line A in FIG. 13) of the button storage portion 404 of the exterior member 402. The button storage portion 404 is set to a size slightly smaller than the size of a general human finger. As a result, when the button 401 is pushed in the −Z direction, the wall of the button storage portion 404 becomes an obstacle and it is difficult to push the button 401. The exterior member 402 is provided with a recess 405 above the pressed portion 106 of the pressed member 105. In the state of FIG. 13 in which the button 401 is not pressed down, the recess 405 is hidden by the button 401 and cannot be seen from the outside. The shape of the exterior member 402 is different from the shape of the exterior member in Examples 1 to 3 described above in that it has a recess 405.

FIG. 14 is a diagram illustrating a method of retracting the lens lock pin 102 in the fourth embodiment.
The state shown in FIG. 14 is a state when the button 401 is pressed in the −Z direction from the state shown in FIG. Since the button 401 has a structure that is difficult to press, it is necessary to press it with a fine-tipped tool or the like. When the operator pushes down the button 401 until the state shown in FIG. 14 is reached, the recess 405 provided in the exterior member 402 becomes visible from the outside. At this time, as shown by an arrow B in FIG. 14, the pressed portion 106 of the pressed member 105 is in a position where it can be seen from the outside (facing the outside) through the recess 405. Therefore, the operator can access the pressed-down portion 106 of the pressed-down member 105 through the recess 405 and push the pressed-down portion 106 in the −Z direction using a tool pin (not shown). This makes it possible to retract the lens lock pin 102. According to the configuration of the fourth embodiment described above, it is possible to make it difficult to easily replace the lens without a tool without impairing the appearance quality. Although preferable examples of the present invention have been described above, the present invention is not limited to these examples, and various modifications and changes can be made within the scope of the gist thereof.

100 Imaging device 102 Lens lock pin 103 Cover member 105 Push-down member

Claims (7)

An image pickup device with a removable lens device
A lock member that can be switched between a state in which the lens device is mounted and a state in which the lens device is retracted from the mounting surface.
A pushed-down member that switches the state of the lock member by being pushed down, and a pushed-down member.
It has a cover member provided on the exterior member of the image pickup apparatus and covering the pressed down member.
An imaging device characterized in that the cover member has a hole portion that enables access to the pressed down member from the outside. When the pressed-down portion of the pressed-down member is pushed down, the lock member switches from the state of protruding with respect to the mount surface to the state of retracting.
The imaging apparatus according to claim 1, wherein the hole portion of the cover member is formed above the pressed-down portion along the pressing direction of the pressed-down portion. The hole portion of the cover member is
It is formed in a long hole shape at a position different from the pressed down portion.
The imaging apparatus according to claim 1, wherein the length of the elongated hole shape is longer than the distance from the pressed-down portion to the hole portion. The cover member has a cavity and has a cavity.
The hole portion of the cover member is formed from the upper surface to the side surface of the cover member.
In the cover member, the position of the end portion of the hole portion on the upper surface side of the cover member is inside the position of the wall surface portion forming the cavity.
The position of the side end portion of the hole portion of the cover member on the side surface side of the cover member shall be inside the position of the end portion of the space above the pressed-down portion provided on the cover member. The imaging apparatus according to claim 1. An image pickup device with a removable lens device
A lock member that can be switched between a state in which the lens device is mounted and a state in which the lens device is retracted from the mounting surface.
A push-down member that switches the lock member by pushing down the pushed-down portion, and a push-down member.
It has a button member that is housed in an accommodating portion of an exterior member of the imaging device and can move in the same direction as the moving direction of the pushed-down member so as to cover the pushed-down member.
The image pickup device, characterized in that the pressed-down portion is located at a position facing the outside when the button member is pressed down. The exterior member has a recess provided above the pressed-down portion.
The imaging device according to claim 5, wherein the pressed-down portion is located at a position facing the outside through the recess when the button member is pressed down. The imaging device according to any one of claims 1 to 6, wherein the pushed-down member is integrally formed with the lock member.

Images