JP2021173862A - Imaging apparatus - Google Patents

Abstract

To provide an imaging apparatus that prevents loosening of a connector section associated with blur correction.SOLUTION: An imaging apparatus has: an image blur correction unit that has a movable unit and a stationary unit, and displaces the movable unit along a surface orthogonal to a photographic optical axis to optically correct image blurring of the imaging apparatus; a control board on which a driving circuit is arranged for controlling the drive of the movable unit; a first flexible substrate that electrically connects the movable unit and the control board to each other; and an urging section that is in contact with a connector of the first flexible substrate for elastically urging the connector of the first flexible substrate in a direction to insert the connector into a connector of the control board.SELECTED DRAWING: Figure 5

Description

The present invention relates to an image pickup apparatus capable of image stabilization.

Conventionally, there is a technique of an image shake correction device that optically corrects image blur by displacing a movable part on which an optical element is mounted in a plane orthogonal to the shooting optical axis. The movable part of the image blur device is electrically connected to the control board by a flexible board.
For example, Patent Document 1 discloses an imaging device in which an image blur correction device and a control substrate are arranged adjacent to each other in substantially the same plane direction, and a flexible substrate is housed in a space between the image blur correction device and the control substrate.

Japanese Unexamined Patent Publication No. 2006-81006

However, in the conventional technique disclosed in Patent Document 1 described above, there is a possibility that the connection of the connector portion of the flexible substrate may be loosened when the movable portion of the image stabilization device is largely displaced.
Therefore, an object of the present invention is to provide an imaging device that prevents loosening of a connector due to image stabilization.

In order to achieve the above object, the imaging device of the present invention
An image shake correction unit that has a movable unit and a fixed unit, and optically corrects the blur of the imaging device by displacing the movable unit along a plane orthogonal to the shooting optical axis.
A control board on which a drive circuit for driving and controlling the movable unit is arranged, and
A first flexible board that electrically connects the movable unit and the control board,
An urging portion for abutting the connector of the first flexible substrate and elastically urging the connector of the first flexible substrate in a direction of inserting the connector into the connector of the control substrate.
It is characterized by having.

According to the present invention, it is possible to provide an image pickup apparatus that prevents loosening of a connector due to image stabilization.

It is external perspective view of the image pickup apparatus which concerns on embodiment of this invention. It is a circuit block diagram which shows the structure of the image pickup apparatus. It is an exploded perspective view of the image pickup apparatus. It is a figure explaining the connection of the image stabilization unit 200 and the control board 300. It is explanatory drawing of the disconnection prevention structure of a connector part.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings with reference to examples. In each figure, the same member or element is given the same reference number, and duplicate explanations are omitted or simplified.
Further, in the embodiment, an example applied to a digital still camera as an imaging device will be described. However, the imaging device includes an electronic device having an imaging function such as a digital movie camera, a smartphone with a camera, a tablet computer with a camera, an in-vehicle camera, and a network camera.

Hereinafter, the image pickup apparatus according to the embodiment of the present invention will be described with reference to FIG.
FIG. 1 shows an external view of the imaging device (digital still camera) 100 of this embodiment.
FIG. 1A is a front perspective view of the image pickup apparatus 100, and FIG. 1B is a rear perspective view of the image pickup apparatus 100.

The shutter button 110 is an operation unit for giving a shooting instruction. The dial 120 is a rotation operation member that can rotate without hitting clockwise or counterclockwise, and by turning the dial 120, various set values such as a shutter speed and an aperture can be changed.

The mode switching dial 130 is an operation unit for switching various modes.
The power switch 140 is an operating member that switches the power of the image pickup apparatus 100 on and off. The SET button 150 is a push button and is mainly used for determining a selection item or the like.
The display device 160 is a monitor using a TFT (Thin Film Transistor) or an organic EL (Electro Luminescence), and displays various setting screens of the image pickup device 100, captured images, live view images, and the like.

The EVF (electronic viewfinder) 170 is an eyepiece-capable finder that displays various setting screens of the image pickup apparatus 100, captured images, and live view images. An interchangeable lens (not shown) can be attached to the mount 180. The axis passing through the center of the mount 180 substantially coincides with the photographing optical axis P. The image sensor 210 is an image sensor such as a CCD or CMOS including an infrared cut filter, a low-pass filter, and the like, and an image of a subject is imaged at the time of shooting by an interchangeable lens (not shown).

FIG. 2 is a circuit block diagram showing the configuration of the image pickup apparatus 100 of FIG. Reference numeral 200 denotes an image stabilization unit, which has a movable unit 200a and a fixed unit 200b. The movable unit 200a includes an image sensor 210. The drive timing and the like are controlled by the image pickup control unit 102, and the image pickup element 210 converts an optical image of an incident subject via an imaging optical system (not shown) into an electric signal and outputs the signal.

The A / D converter 103 converts the analog signal output from the image sensor 210 into a digital signal. The converted and generated digital data is stored in the internal memory 107 under the control of the memory control unit 105 and the system controller 101.
The image processing unit 104 performs predetermined pixel interpolation processing and color conversion processing on the data from the A / D converter 103 or the data read from the internal memory 107 by the memory control unit 105.

The memory control unit 105 controls the A / D converter 103, the image processing unit 104, the compression / decompression unit 106, and the internal memory 107, and also controls the recording and reproduction of data on the recording medium 108.
The image data for display written in the internal memory 107 is displayed by the display device 160 or the EVF 170 via the image display control unit 161.

Further, the internal memory 107 is used for storing captured still images and moving images, and can also be used as a work area of the system controller 101.
The compression / decompression unit 106 that compresses and decompresses the image data reads the image stored in the internal memory 107, performs compression processing or decompression processing, and writes the processed data to the internal memory 107 again.

The system controller 101 has a built-in CPU as a computer, and functions as a control means for executing various operations of the entire image pickup apparatus based on a computer program stored in the memory. The system controller 101 receives various operation instructions input from the shutter button 110, the dial 120, the mode switching dial 130, the power switch 140, the SET button 150, and the like. Further, the system controller 101 communicates with a lens control circuit in an interchangeable lens (not shown) via an electric contact provided on the mount 180.

The attitude detection unit 112 is composed of an angular velocity sensor and an acceleration sensor, and outputs the attitude information of the image pickup apparatus 100 to the system controller 101. Then, the attitude information is supplied to the image shake correction unit drive control unit 111. Here, the image blur includes the camera shake of the image pickup apparatus.
Then, the movable unit 200a of the image shake correction unit 200 is displaced and driven along a plane orthogonal to the shooting optical axis according to the posture information, so that the camera shake (shake) of the image stabilization device can be optically corrected. It becomes.

The image shake correction unit 200 includes a movable unit 200a having an image sensor 210 and a coil, and a fixed unit 200b having a magnet.
The Lorentz force generated by energizing the coil facing the magnet causes the movable unit 200a to translate or rotate in a plane orthogonal to the photographing optical axis P. Since this is a known technique, detailed description thereof will be omitted.

3A and 3B are exploded perspective views of the image pickup apparatus, FIG. 3A is an exploded perspective view seen from the front surface of the image pickup apparatus 100, and FIG. 3B is an exploded perspective view seen from the back surface of the image pickup apparatus 100. Further, FIG. 4 is a diagram illustrating a connection between the image stabilization unit 200 and the control board 300.
In the drawings after FIG. 3, in order to facilitate understanding, the parts necessary for the explanation of this embodiment are illustrated, and the parts not necessary for the explanation are not shown as much as possible.

As shown in FIGS. 3A and 3B, the image pickup apparatus 100 includes an image stabilization unit 200, a control board 300, a base member 310, and a back exterior member 340.
The image stabilization unit 200 is fixed to the base member 310 by screws 353a, 353b, and 353c. Further, the control board 300 is fixed to the base member 310 by screws 352a, 352b, and 352c.

The back exterior member 340 is fixed to the base member 310 by screws 351a, 351b, and 351c. Therefore, the control board 300 and the back exterior member (circuit board) 340 are fixed to the base member 310 of the image pickup apparatus 100, and the positional relationship between the control board 300 and the back exterior member (circuit board) 340 is accurately determined.

Further, the image stabilization unit 200 and the control board 300 are electrically connected by the first flexible board 320. An image shake correction unit drive control unit 111, a system controller 101, and the like as a drive circuit for driving and controlling the movable unit are arranged on the control board 300.

The second flexible substrate 330 has a connector 332 and a bent portion 331, and is fixed to the back exterior member 340. The back exterior member 340 functions as a circuit board different from the control board, and a circuit such as an image display control unit 161 is arranged on the back exterior member 340. By connecting the connector 332 of the second flexible board 330 and the connector 302 of the control board 300, the second flexible board 330 and the control board 300 are electrically connected.

Further, the second flexible board 330 and the back exterior member (circuit board) 340 are electrically connected by a connector (not shown), and the back exterior member (circuit board) 340 and the control board are electrically connected. You are connected.
The movable unit 200a of the image stabilization unit 200 has a connector 325. Further, the fixed unit 200b of the image stabilization unit 200 has a fixed base 201. The control board 300 has a connector 301 and a connector 302.

The first flexible substrate 320 has a connector 321 and a connector 322, and a reinforcing plate 323 is arranged on the back side of the connector 321. The first flexible board 320 and the control board 300 are electrically connected by connecting the connector 321 and the connector 301. Further, the first flexible substrate 320 and the movable unit 200a of the image stabilization unit 200 are electrically connected by connecting the connector 322 and the connector 325.

Further, the first flexible substrate 320 has a fixing portion 324, and the fixing portion 324 is fixed to the fixing base 201 of the fixing unit 200b by an adhesive. That is, the first flexible substrate is fixed to a part of the image pickup apparatus at an intermediate position between the movable unit and the control substrate. As a result, the displacement of the first flexible substrate 320 due to the displacement of the movable unit 200a is stopped by the fixed portion 324, and the vibration of the movable unit is less likely to be transmitted to the connector, making it difficult for the connector to come off.

A BtoB connector is used for the connector 301, the connector 302, the connector 321 and the connector 322, the connector 325, and the connector 332.
A type of connector other than the BtoB connector may be used for connecting the connector 302 and the connector 332. Similarly, a connector of a type other than the BtoB connector may be used for connecting the connector 322 and the connector 325.

FIG. 5 is an explanatory diagram of a connector portion disconnection prevention configuration, and the relationship between the first flexible substrate 320 and the second flexible substrate 330 will be described with reference to FIGS. 5A to 5C.
A part of the AA cross section of FIG. 5 (A) is shown in FIG. 5 (B). In FIG. 5A, the control board 300, the second flexible board 330, and the back exterior member 340 are not shown.

The connector portion 400 of FIG. 5B is a state in which the connector 321 of the first flexible board 320 and the connector 301 of the control board 300 are connected.
The second flexible substrate 330 is fixed to the back exterior member 340 by the fixing member 410.

Here, the bent portion 331 of the second flexible substrate 330 abuts on the reinforcing plate 323 of the connector portion 400 in the insertion / removal direction (horizontal direction) 450 of the connector portion 400, and the direction in which the connector 321 is inserted into the connector 301 (left direction in the drawing). ). That is, the bent portion 331 abuts on the connector of the first flexible substrate and serves as an urging portion for elastically urging the connector of the first flexible substrate in the direction of inserting the connector of the control substrate. It is functioning.

Therefore, it is possible to prevent the connector 321 and the connector 301 from being loosened or disconnected from each other due to vibration caused by the displacement of the movable unit 200a.
As described above in FIG. 3, the positional relationship between the control board 300 and the back exterior member 340 is accurately determined. Then, as shown in FIGS. 3A and 3B, the second flexible board 330 and the control board 300 are connected by the connector 332 and the connector 302.

Therefore, the bent portion 331 of the second flexible substrate 330 comes into contact with the reinforcing plate 323 of the connector portion 400 without moving in the vertical direction. The frictional resistance of each contact surface is lowered so that the bent portion 331 of the second flexible substrate 330 and the reinforcing plate 323 come into contact with each other and slide smoothly. Further, in order to prevent the bent portion 331 of the second flexible substrate 330 from being worn, the portion of the bent portion 331 that comes into contact with the reinforcing plate 323 is reinforced. Therefore, a reinforcing plate may be provided also at a portion of the bent portion 331 that comes into contact with the reinforcing plate 323.

FIG. 5C shows a state in which the connector portion 400 and the second flexible substrate 330 are viewed from the C direction of FIG. 5B. The part that cannot be seen when viewed from the C direction is indicated by a broken line.
The width 430 of the bent portion 331 of the second flexible substrate 330 is larger than the width 440 of the connector portion 400.

That is, the width of the bent portion of the second flexible substrate in the predetermined direction (horizontal direction) is larger than the width of the connector 321 of the first flexible substrate in the predetermined direction (horizontal direction).
Therefore, the connector portion 400 can be urged over the entire width direction of FIG. 5C, and it is possible to more reliably prevent the connector portion 400 from being loosened or disconnected due to vibration caused by the displacement of the movable unit 200a. can.

Further, in the insertion / removal direction 450 of the connector portion 400, the end (boundary portion) 411 of the fixing member 410 is provided so as to be located substantially at the center of the vertical width 420 of the connector portion 400. That is, a part of the second flexible substrate is fixed to the back exterior member 340 as a circuit board by the fixing member 410.

Further, the boundary portion 411 between the second flexible substrate and the fixing member 410 is arranged at a position facing the center of the vertical width of the connector 321 of the first flexible substrate. Therefore, the bent portion 331 of the second flexible substrate 330 is set to abut on substantially the center of the vertical width of the connector portion 400. That is, the bent portion 331 of the second flexible substrate is arranged so as to urge the center of the width in the direction (vertical direction) orthogonal to the predetermined direction (horizontal direction) of the connector portion 321 of the first flexible substrate. There is.

If the bent portion 331 of the second flexible substrate 330 comes into contact with the end of the reinforcing plate 323, the connection of the connector portion 400 may be loosened or disconnected. However, in this embodiment, since the bent portion 331 of the second flexible substrate 330 comes into contact with the center of the vertical width of the reinforcing plate 323, such a problem can be prevented.

Although the bent portion 331 is used as a urging means in the above embodiment, the direction in which the connector 321 of the first flexible substrate is inserted into the connector 301 of the control substrate 300 by another elastic body (for example, a spring or the like). May be elastically urged.
Further, in the embodiment, the bent portion 331 abuts on the connector 321 of the first flexible board via the reinforcing plate 323 and is urged in the direction of inserting into the connector 301 of the control board 300, but without the reinforcing plate. It may be directly contacted and urged.

Although the present invention has been described in detail based on the preferred examples thereof, the present invention is not limited to the above examples, and various modifications can be made based on the gist of the present invention. It is not excluded from the scope of the invention.

200 Image stabilization unit 200a Movable unit 200b Fixed unit 300 Control board 301 Connector 320 First flexible board 321 Connector 323 Reinforcing board 330 Second flexible board 331 Bending part 340 Rear exterior member (circuit board)
400 Connector part 450 Insertion / removal direction

Claims (9)

An image shake correction unit that has a movable unit and a fixed unit, and optically corrects the blur of the imaging device by displacing the movable unit along a plane orthogonal to the shooting optical axis.
A control board on which a drive circuit for driving and controlling the movable unit is arranged, and
A first flexible board that electrically connects the movable unit and the control board,
An urging portion for abutting the connector of the first flexible substrate and elastically urging the connector of the first flexible substrate in a direction of inserting the connector into the connector of the control substrate.
An imaging device characterized by having. The imaging device according to claim 1, wherein the urging portion is a bent portion of a second flexible substrate. The imaging device according to claim 2, wherein the second flexible substrate is for electrically connecting a circuit board different from the control board and the control board. The imaging apparatus according to claim 2 or 3, wherein a reinforcing plate is arranged between the bent portion of the second flexible substrate and the connector of the first flexible substrate. The first flexible substrate according to any one of claims 1 to 4, wherein the first flexible substrate is fixed to a part of the image pickup apparatus at an intermediate position between the movable unit and the control substrate. Imaging device. The imaging device according to claim 2, wherein the width of the bent portion of the second flexible substrate in a predetermined direction is larger than the width of the connector of the first flexible substrate in the predetermined direction. The bent portion of the second flexible substrate is arranged so as to urge the center of the width of the connector portion of the first flexible substrate in a direction orthogonal to the predetermined direction. Item 6. The imaging device according to item 6. A part of the second flexible substrate is fixed to the circuit board by a fixing member, and the boundary portion between the second flexible substrate and the fixing member is the predetermined portion of the connector of the first flexible substrate. The imaging device according to claim 7, wherein the image pickup apparatus is arranged at a position facing the center in a width orthogonal to the direction. The imaging device according to any one of claims 3 to 8, wherein the circuit board and the control board are fixed to the imaging device.

Images