electronic machines

Abstract

To provide an electronic apparatus having a contact configuration that enables contact with uniform contact pressure by using a simple configuration.SOLUTION: An electronic apparatus has a circuit member (500), a substrate (600), and a fastening member (200) which fixes those two. The circuit member includes: a base part (501) in which a conductive pattern (510) is formed; a fastened part (560) provided on the base part and to which the fastening member is fixed; and a plurality of convex parts (570) arranged on the base part in a substantially circular shape using the fastened part as the center. A first contact pattern (572) is formed on each of the plurality of convex parts. The substrate is formed with a hole (601) into which the fastening member is inserted. The substrate includes a plurality of second contact patterns (606) arranged on the substrate in a substantially circular shape using the hole as the center so that each is opposite to the first contact pattern. The fastening member is secured to the fastened part through the hole, and the first contact pattern and the second contact pattern are in contact with each other.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to an electronic device having a circuit board, and more particularly to an electronic device using MID technology. [Background technology]

[0002] Electronic devices are equipped with a variety of circuit boards. Inside electronic devices, circuit boards are connected to each other using connectors, such as cables or flexible printed circuit boards. In recent years, connector connection work using robotic automated assembly equipment has become known, but for small electronic devices, it has been necessary to secure space and improve the performance of the equipment to perform operations such as flipping and opening connectors and inserting flexible printed circuit boards.

[0003] Another known connection structure between circuit boards without using connectors is to connect flexible printed circuit boards with contacts by fastening them together with screws, but this structure requires a separate pressing member to apply uniform contact pressure to the contacts.

[0004] On the other hand, MID (Molded Interconnect Device) technology is also known. MID technology involves irradiating a laser onto the required areas of a base material, forming a metal plating film only on the irradiated areas. The areas where the metal plating film is formed become the conductive pattern.

[0005] Patent Document 1 discloses a configuration in which circuit boards are connected to each other using contacts formed on the circuit boards by MID technology. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 5393681 Summary of the Invention [Problem to be solved by the invention]

[0007] However, the configuration disclosed in Patent Document 1 has conductive adhesive or clip members between the contacts, which increases the number of parts and makes the device more complicated, and there is also the concern that the contact pressure will differ between the contacts.

[0008] The present invention provides an electronic device having a contact configuration that allows contact with a uniform contact pressure using a simple structure. [Means for solving the problem]

[0009] An electronic device according to one aspect of the present invention has a circuit member, a substrate, and a fastening member for fixing the substrate to the circuit member, wherein the circuit member includes a base portion on which a conductive pattern is formed, a fastening portion provided on the base portion and to which the fastening member is fixed, and a plurality of protrusions arranged on the base portion in a substantially circular shape centered on the fastening portion, a first contact pattern is formed on each of the plurality of protrusions, and the substrate has a hole portion formed therein through which the fastening member is inserted, and the substrate includes a plurality of second contact patterns arranged on the substrate in a substantially circular shape centered on the hole portion so that each second contact pattern faces the first contact pattern, and the fastening member is fixed to the fastening portion via the hole portion, so that the first contact pattern and the second contact pattern come into contact with each other. The fastened portion includes a convex portion formed on the base portion, and the first contact pattern formed on each of the plurality of convex portions is located at a position higher than the convex portion. It is characterized by the following.

[0010] Other objects and features of the present invention will be described in the following embodiments. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide an electronic device having a contact configuration that allows contact with a uniform contact pressure using a simple structure. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a diagram illustrating an imaging device according to a first embodiment. [Figure 2]1 is a block diagram illustrating an imaging device according to a first embodiment. [Figure 3] FIG. 1 is an exploded perspective view illustrating an imaging device according to a first embodiment. [Figure 4] FIG. 2 is a perspective view illustrating a circuit member according to the first embodiment. [Figure 5] 1A and 1B are diagrams illustrating a flexible printed circuit board according to a first embodiment. [Figure 6] 1A and 1B are diagrams illustrating a circuit member and a flexible printed circuit board according to a first embodiment. [Figure 7] 3 is a cross-sectional view illustrating a connection state between the circuit member and the flexible printed circuit board according to the first embodiment. FIG. [Figure 8] FIG. 10 is a cross-sectional view illustrating a connection state between a circuit member and a flexible printed circuit board according to a second embodiment. [Figure 9] FIG. 10 is a perspective view illustrating a circuit member according to a third embodiment. [Figure 10] 10A and 10B are diagrams illustrating a flexible printed circuit board according to a third embodiment. [Figure 11] 10A and 10B are diagrams illustrating a circuit member and a flexible printed circuit board according to a third embodiment. [Figure 12] 10A and 10B are diagrams illustrating a connection state between a circuit member and a flexible printed circuit board according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Here, an interchangeable lens digital camera will be taken as an image capturing apparatus according to the present invention. [Example]

[0014] Hereinafter, the first embodiment will be described with reference to FIGS.

[0015] 1A and 1B are diagrams illustrating an imaging device 1 as an electronic device according to this embodiment, in which Fig. 1A is a perspective view of the imaging device 1 as seen from the front, and Fig. 1B is a perspective view of the imaging device 1 as seen from the rear.

[0016] 1, a display unit 2 is a display unit for displaying images and various information, and is provided in the imaging device 1. A touch panel 3 can detect a touch operation on the display surface (operation surface) of the display unit 2.

[0017] The outside viewfinder display unit 4 is a display unit provided on the top surface of the imaging device 1, and displays various setting values ​​of the imaging device 1, including the shutter speed and aperture.

[0018] The shutter button 5 is an operation unit for issuing a shooting instruction, and the mode change switch 6 is an operation unit for switching between various modes.

[0019] The terminal cover 7 is a cover for protecting a connector (not shown) of a connection cable or the like that connects the imaging device 1 to a connection cable of an external device.

[0020] The main electronic dial 8 is a rotary operation member, and by turning the main electronic dial 8, settings such as shutter speed and aperture can be changed.

[0021] The power switch 10 is an operating member for switching the power of the imaging device 1 on and off.

[0022] The sub electronic dial 11 is a rotary operation member, and can be used to move the selection frame, switch images, and so on.

[0023] An operation unit 9 is configured on the rear side of the imaging device 1. The operation unit 9 is configured with multiple push buttons and an operation dial 12. The operation dial 12 is a rotary operation member, and by turning the operation dial 12, settings such as shutter speed and aperture can be changed. The SET button 13 is a push button that is mainly used to confirm selected items. The selection member 26 is a cross key (four-way key) that can be pressed up, down, left, and right. An operation can be performed according to the part of the selection member 26 that is pressed.

[0024] The video button 14 is used to start and stop video shooting (recording).

[0025] The AE lock button 15 can fix the exposure state by pressing it in the shooting standby state.

[0026] The AF position switching button 16 can be used to select and move the AF frame.

[0027] By pressing the AF-on button 35 in a shooting standby state, the camera can focus on the set AF frame.

[0028] By pressing the setting switch button 36 in a shooting standby state, a shooting condition change menu is displayed on the display unit 2 or EVF 22 and becomes selectable, and various shooting conditions such as exposure state and white balance state can be changed.

[0029] The enlargement button 37 is an operation button for turning enlargement mode on and off in the live view display in shooting mode. After turning enlargement mode on, you can enlarge or reduce the LV image by operating the main electronic dial 8. In playback mode, the enlargement button 37 functions as a button for enlarging the playback image and increasing the magnification ratio.

[0030] By pressing the information button 38 in the playback mode, the information of the recorded data can be played back and displayed.

[0031] The playback button 17 is an operation button for switching between a shooting mode and a playback mode. By pressing the playback button 17 during the shooting mode, the mode switches to the playback mode, and the most recent image recorded on a recording medium (not shown) can be displayed on the display unit 2.

[0032] The erase button 39 can be pressed in the playback mode to erase the selected recorded data.

[0033] The menu button 19 is a push button, and when the menu button 19 is pressed, a menu screen in which various settings can be made is displayed on the display unit 2. The user can intuitively make various settings using the menu screen displayed on the display unit 2, the operation dial 12, and the SET button 13.

[0034] The rating button 18 is a push button, and by pressing it in the playback mode, flag information can be added to the selected recording data.

[0035] A microphone (not shown) is placed inside the microphone hole 30 and is used to record audio data of the subject during video shooting.

[0036] A speaker (not shown) is disposed inside the speaker hole 31 and is used to play back the sound of the recorded data and the built-in sound of the imaging device 1.

[0037] The eyepiece 21 is an eyepiece finder (a peer-in type finder), and the user can view an image displayed on an EVF 22 inside the eyepiece 21 through the eyepiece 21.

[0038] The eyepiece detection unit 23 is an eyepiece detection sensor that detects whether the photographer places his or her eye close to the eyepiece unit 21 or not.

[0039] The cover 24 is a cover for a slot that stores a recording medium (not shown).

[0040] The grip section 25 is a holding section shaped to be easily held in the right hand when the user holds the imaging device 1. The shutter button 5 and main electronic dial 8 are located in positions that can be operated with the index finger of the right hand when the imaging device 1 is held by gripping the grip section 25 with the little finger, ring finger, and middle finger of the right hand. In the same state, the sub electronic dial 11 and selection member 26 are located in positions that can be operated with the thumb of the right hand.

[0041] The image sensor 90 is a CMOS sensor that converts captured optical information into a signal, and is a so-called 35 mm full-size image sensor having an effective area of ​​approximately 24 mm×36 mm.

[0042] The lens mount section 28 is a section where a detachable lens (not shown) is attached to the imaging device 1. A communication terminal 20 is provided inside the lens mount section 28, and communication is performed between the imaging device 1 and the lens via the communication terminal 20.

[0043] A retention lock (not shown) functions when a lens is attached to the imaging device 1. The retention lock mechanism is released by pressing the lock button 27, making it possible to remove the lens. The lock button 27 is located near the side of the diameter center of the lens mount portion 28.

[0044] The imaging device 1 is configured to be able to mount, as detachable lenses, so-called full-size compatible lenses that can expose the entire effective area of ​​the imaging element 90, which is approximately 24 mm x 36 mm, and lenses with a smaller format exposure area, so-called APS-C compatible lenses.

[0045] A user can hang the imaging device 1 and carry it around by inserting a string-like member (not shown) such as a strap through the strap insertion members 40 and 41.

[0046] Next, the configuration of the imaging device 1 according to this embodiment will be described with reference to Fig. 2. Fig. 2 is a block diagram illustrating the imaging device 1.

[0047] As an example of the imaging device 1, an interchangeable lens camera will be described, in which a lens device 70 is attached to the camera body. The lens device 70 includes an imaging optical system 74 having multiple lenses and an aperture. The optical axis of the imaging optical system 74 is indicated by optical axis 99. The lens device 70 also includes a lens system control unit 72 and a lens driving unit 73. The lens system control unit 72 controls the entire lens device 70. The lens device 70 can communicate with a control unit within the camera body of the imaging device 1 via a communication terminal 20. The lens driving unit 73 controls the driving of the focus lens, zoom lens, aperture, etc.

[0048] The camera body of the imaging device 1 includes a camera system control unit 81 and an imaging element 90. The camera system control unit 81 controls the entire imaging device 1. The imaging element 90 receives light from a subject via the imaging optical system 74 and a shutter mechanism 89, and outputs an electrical signal through photoelectric conversion. The image processing unit 83 acquires the image signal output by the imaging element 90 and performs image processing such as development. The image data after image processing is stored in the storage unit 84.

[0049] A shake correction unit 88 corrects image shake in the captured image. A shake detection unit 87 detects shake of the device due to hand shake, etc. A shutter mechanism unit 89 is disposed on the subject side of the image sensor 90 and is used to control the exposure time.

[0050] The shake detection unit 87 can detect rotation around the optical axis 99, and detects rotational shake of the imaging device 1 in the pitch, yaw, and roll directions. The shake detection unit 87 uses, for example, a gyro sensor or the like to detect shake, and outputs a shake detection signal to the camera system control unit 81.

[0051] The camera system control unit 81 controls the imaging device 1 and the lens device 70 in accordance with an operation signal detected by an operation detection unit 86. The camera system control unit 81 includes a CPU (Central Processing Unit), and the CPU executes predetermined programs to perform various processes in the imaging system.

[0052] The shake correction unit 88 performs image shake correction in accordance with a control command from the camera system control unit 81. The shake correction unit 88 moves (drives) the imaging element 90 within a plane perpendicular to the optical axis 99.

[0053] Next, the operation of the imaging device 1 will be described. Light from the subject is imaged on the imaging surface of the imaging element 90 via the imaging optical system 74. A focus evaluation amount and an exposure amount are obtained from the output signal of the imaging element 90, and optical adjustment processing of the imaging optical system 74 is performed based on this information. That is, the imaging element 90 is properly exposed, and an imaging signal corresponding to the subject image is output from the imaging element 90.

[0054] The shutter mechanism 89 controls the light blocking of the image sensor 90 by moving the shutter curtain 42 (FIG. 1(a)). The shutter mechanism 89 is equipped with a light blocking member (mechanical rear curtain), and the completion of exposure of the image sensor 90 is carried out by the shutter mechanism 89. At the image sensor 90, electronic front curtain processing is carried out before the rear curtain of the shutter mechanism 89 moves. This is processing that controls the timing of the start of exposure by resetting the charge for each line. In the electronic front curtain mode, exposure control is carried out by synchronizing the reset operation of the charge of the image sensor 90 with the movement of the rear curtain of the shutter mechanism 89. As the technology of the electronic front curtain is well known, a detailed explanation thereof will be omitted.

[0055] The image processing unit 83 includes an A / D converter, a white balance adjustment circuit, a gamma correction circuit, an interpolation calculation circuit, etc. For example, the image processing unit 83 performs color interpolation (demosaicing) processing on the Bayer array signal acquired from the image sensor 90 to generate color image data, and outputs the image data for recording to the storage unit 84. The image processing unit 83 also compresses still image and moving image data. The audio control unit 82 compresses audio data to be recorded. The audio data compressed by the audio control unit 82 is synthesized into moving images and still images by the image processing unit 83, and then output to the storage unit 84. The storage unit 84 includes a non-volatile memory and stores various data, including image data. The camera system control unit 81 stores data in the storage unit 84 and outputs data read from the storage unit 84 to the display unit 85 for display to the user. The display unit 85 in FIG. 2 corresponds to the display unit 2 and the extra-viewfinder display unit 4 in FIG. 1.

[0056] The camera system control unit 81 controls imaging processing, image processing, recording / playback processing, and the like in response to a user operation signal. For example, the operation detection unit 86 detects pressing of the shutter release button. Pressing the shutter release button halfway turns on a first switch. When the user presses the shutter release button all the way down, a second switch turns on. When the camera system control unit 81 receives a shooting instruction from the operation detection unit 86 in response to operation of the second switch, the camera system control unit 81 controls the driving of the image sensor 90, performs image processing, compression processing, and the like, and also controls the display of image information, etc. on the screen of the display unit 2. The operation detection unit 86 also detects operation of, for example, the touch panel 3 (FIG. 1(b)) provided on the back of the camera, and transmits the user's operation instruction to the camera system control unit 81.

[0057] The camera system control unit 81 is connected to the image processing unit 83 and calculates an appropriate focal position and aperture value based on a signal from the image sensor 90. That is, the camera system control unit 81 performs photometry and focus state detection based on the output signal from the image sensor 90, and determines exposure conditions (F-number, shutter speed, etc.). The camera system control unit 81 controls the exposure of the image sensor 90 by controlling the aperture and shutter. The camera system control unit 81 transmits a command signal to the lens system control unit 72 via the communication terminal 20. The lens system control unit 72 controls the lens driving unit 73 in accordance with the command signal from the camera system control unit 81.

[0058] By controlling the operation of each unit of the imaging device 1 in response to user operation, it is possible to capture still images and videos. When the user uses the operation members of the imaging device 1 to instruct the imaging device 1 to capture a still image or a video, the camera system control unit 81 controls the imaging operation in accordance with an operation signal from the operation detection unit 86. The camera system control unit 81 calculates a target value based on a detection signal from the shake detection unit 87 and controls the drive of the shake correction unit 88. In other words, the camera system control unit 81 is responsible for generating the target value based on the detection signal from the shake detection unit 87 and for controlling the drive of the shake correction unit 88. At that time, the camera system control unit 81 controls the image shake correction operation in accordance with the shooting conditions, exposure conditions, etc.

[0059] To briefly explain the flow of drive control of the shake correction unit 88, the user performs a first switch operation (S1 operation), which is detected by the operation detection unit 86, starting a shooting preparation operation. To facilitate the user's composition during what is known as aiming, the shake correction unit 88 performs image blur correction. That is, the image sensor 90 is driven (moved or rotated) under the control of the shake correction unit 88 based on a detection signal from the shake detection unit 87. The user then performs a second switch operation (S2 operation), which is detected by the operation detection unit 86, starting a shooting operation (image recording operation). At this time, in order to suppress image blur in the subject image acquired by the exposure operation, the image sensor 90 is driven under the control of the shake correction unit 88 based on the detection signal from the shake detection unit 87. After a certain time has passed since the exposure, the image blur correction operation is stopped.

[0060] Next, the configuration of an imaging device 1 as an electronic device according to this embodiment will be described with reference to Fig. 3 to Fig. 7. Fig. 3 to Fig. 7 show only the components necessary for explaining this embodiment.

[0061] FIG. 3 is an exploded perspective view illustrating the imaging device 1 of this embodiment.

[0062] The rear cover 100 is a member formed by die-casting a magnesium alloy, has high rigidity, and is an exterior member on the rear side of the imaging device 1.

[0063] The display unit 2 has a so-called barrier angle mechanism that is configured to be rotatable. A hinge portion 170 of the display unit 2 is held by support portions 150a and 150b of the rear cover 100, and the display unit 2 is configured to be rotatably supported.

[0064] The rear cover 100 has a recess 112 that the user can place his / her finger on when rotating the display unit 2. The recess 112 is recessed one step below the operation surface 142 of the display unit 2 and the rear cover 100.

[0065] The rear cover 100 has a configuration in which operation members such as buttons 140a to 140h and an operation dial 12 are arranged. The buttons 140a to 140h are elastic members formed from a resin mold, and have contacts (not shown) made of conductive rubber. The operation dial 12 is a rotary operation member, and has a SET button 13 in the center. The SET button 13 has a configuration in which it has contacts (not shown) made of conductive rubber.

[0066] The operation dial 12 is configured to be rotatably supported relative to the dial base member 310. A terminal brush (not shown) is configured on the operation dial 12, and the terminal brush abuts against a dial pattern 513 configured on the circuit member 500 (described later), and slides on the dial pattern 513 by the rotational movement.

[0067] The rear cover 100 has bosses 180a and 180b. These bosses 180a and 180b are inserted into positioning holes 315a and 315b of the dial base member 310 to determine the position of the operation dial 12. Furthermore, the bosses 180a and 180b are also inserted into positioning holes 503a and 503b formed in the base portion 501 of the circuit member 500 to determine the position of the circuit member 500. Then, they are fastened and fixed with screws (not shown).

[0068] Fig. 4 is a perspective view illustrating the circuit member 500. Fig. 4(a) is a perspective view of the circuit member 500 seen obliquely from the rear, Fig. 4(b) is a perspective view of the circuit member 500 seen obliquely from the front, and Fig. 4(c) is a diagram illustrating a contact portion 550 of the circuit member 500.

[0069] The base portion 501 of the circuit member 500 is a member formed by resin molding using a resin material, and has high rigidity. Pattern wiring 510, which is a conductive pattern, is formed directly on the surface of the base portion 501 using MID (Molded Interconnect Device) technology, forming an electrical circuit. MID technology is a technology that forms a pattern by irradiating a laser onto predetermined locations on the base material and applying metal plating only to the laser-irradiated areas.

[0070] The base portion 501 of the circuit member 500 has switch contact patterns 512a to 512i at positions facing the buttons 140a to 140h (FIG. 3) and the contacts (not shown) of the SET button 13. The switch contact patterns 512a to 512i have exposed metal plating, and when the contacts of the buttons 140a to 140h and the SET button 13 come into contact with the switch contact patterns 512a to 512i, they electrically detect switch ON. The dial pattern 513 has exposed metal plating, and is a contact pattern that abuts against a terminal brush (not shown) formed on the operation dial 12 (FIG. 3). When the operation dial 12 rotates, the terminal brush slides on the dial pattern 513, and the rotation of the operation dial 12 is detected by a combination of conduction signals from the terminal brush and the dial pattern 513.

[0071] A through hole 515 is formed in the base part 501. By applying metal plating to the inner wall surface of the hole formed by molding or drilling the base part 501 using MID technology, it is possible to form a pattern on both the front and back of the base part 501.

[0072] The switch contact patterns 512a to 512i and the dial pattern 513 can be wired along desired paths by forming pattern wiring 510 on the surface of the base portion 501 by metal plating.

[0073] Electrical signals on the base portion 501 of the circuit member 500 are collected at the contact portion 550 by the pattern wiring 510 and transmitted to the flexible printed circuit board 600, which will be described later and is electrically connected to the contact portion 550.

[0074] The contact portion 550 of the circuit member 500 will be described in detail with reference to FIG. 4(c).

[0075] Screw holes 560 are formed in the base portion 501, and screw seats (protruding portions) 562 protruding from a surface 565 of the base portion 501 are formed around the screw holes 560. The screw holes 560 are referred to as fastening portions, and the fastening portions may include the screw seats 562 formed around the screw holes 560. Furthermore, multiple protruding portions 570 are formed in circular shapes at equal intervals from the screw holes 560. That is, multiple protruding portions 570 are formed on the base portion 501 in a circular shape with the screw holes 560 at their centers. Here, multiple protruding portions 570 may be formed in a substantially circular shape at approximately equal intervals from the screw holes 560. The protruding portions 570 protrude from the surface 565 of the base portion 501. Metal plating is formed on the surface of the protruding portions 570 using MID technology, forming a contact pattern (first contact pattern) 572. The contact pattern 572 is connected to the pattern wiring 510 described above, and the two are electrically connected.

[0076] Furthermore, bosses 555a and 555b are formed in the contact portion 550, and the bosses 555a and 555b are used for positioning with a flexible printed circuit board 600, which will be described later.

[0077] In the contact portion 550, the number of protrusions 570 corresponds to the number of connectable signals. The protrusions 570 are arranged in a circular pattern at equal intervals from the screw holes 560, so that as the number of protrusions 570 increases, the distance between the protrusions 570 decreases. The contact portion 550 has cut portions 573 formed in each protrusion 570, which ensures a constant distance D between adjacent protrusions 570. This configuration prevents short circuits between the protrusions 570 even if the number of protrusions 570, i.e., the number of connectable signals, increases.

[0078] FIG. 5 is a diagram illustrating a flexible printed circuit board 600. As shown in FIG.

[0079] The flexible printed circuit board 600 is a flexible substrate, and has a structure in which a wiring pattern made of copper foil is sandwiched between a base film made of an insulating film such as polyimide and a coverlay film, and the two films are bonded together using a thermosetting adhesive.

[0080] A hole 601 is formed in the flexible printed circuit board 600, and an FPC contact pattern (second contact pattern) 606 is formed around the hole 601. The FPC contact pattern 606 is formed by opening a coverlay film 605 and exposing the copper foil. The FPC contact patterns 606 are arranged on the flexible printed circuit board 600 in a circular shape centered on the hole 601 so that each FPC contact pattern faces a corresponding contact pattern 572. The FPC contact pattern 606 comes into contact with the contact portion 550 of the circuit member 500, thereby electrically connecting to the contact portion 550 and transmitting an electrical signal. The FPC contact pattern 606 is also wired to an end 610 of the flexible printed circuit board 600 by a wiring pattern (not shown), and an electrical signal is transmitted to a substrate (not shown).

[0081] Positioning holes 602a and 602b are also formed in the flexible printed circuit board 600. A reinforcing material (reinforcing portion) 609 is formed on the opposite side of the FPC contact pattern 606. The reinforcing material 609 is a member made of polyimide or glass epoxy resin, and is formed at least in the area where the FPC contact pattern 606 is formed.

[0082] 6A and 6B are diagrams illustrating a circuit member 500 and a flexible printed circuit board 600. Fig. 6A is a perspective view showing the configuration of the circuit member 500 and the flexible printed circuit board 600, and Fig. 6B is a perspective view illustrating the connection state of the circuit member 500 and the flexible printed circuit board 600.

[0083] Bosses 555a and 555b are formed on a base portion 501 of the circuit member 500. The bosses 555a and 555b are inserted into positioning holes 602a and 602b of the flexible printed circuit board 600 in the direction of arrow B, thereby determining the positions of the circuit member 500 and the flexible printed circuit board 600. A single screw (fastening member) 200 is inserted into a hole 601 of the flexible printed circuit board 600 in the direction of arrow B and fastened to a screw hole 560 of the base portion 501 in the direction of arrow B. In this way, the flexible printed circuit board 600 is fastened and fixed to the circuit member 500. The bosses 555a and 555b serving as engaging portions formed on the base portion 501 and the positioning hole 602 serving as an engaged portion formed on the flexible printed circuit board 600 form a positioning mechanism. Note that the positioning holes 602a and 602b may be formed in the base portion 501, and the bosses 555a and 555b may be formed on the flexible printed circuit board 600. In this way, a positioning mechanism is configured by providing an engaging portion on one of the base portion 501 and the flexible printed circuit board 600 and providing an engaged portion on the other.

[0084] When the flexible printed circuit board 600 and the base portion 501 of the circuit member 500 are fastened and fixed with the screws 200, the FPC contact pattern 606 of the flexible printed circuit board 600 and the contact pattern 572 of the circuit member 500 come into contact with each other and are electrically connected, thereby transmitting each electrical signal.

[0085] Fig. 7 is a cross-sectional view illustrating the connection state between the circuit member 500 and the flexible printed circuit board 600. Fig. 7 shows a cross section of the AA portion in Fig. 6(b).

[0086] As described above, the base portion 501 of the circuit member 500 is formed with a screw seat 562 that protrudes from the surface 565. Furthermore, the protrusion 570 is configured to protrude from the surface 565. The protrusion 570 has a contact pattern 572 formed with metal plating using MID technology, and the contact pattern 572 is connected to the wiring pattern 510. The flexible printed circuit board 600 has an FPC contact pattern 606 formed in a position facing the contact pattern 572.

[0087] The screws 200 are inserted into the holes 601 of the flexible printed circuit board 600 and fastened to the screw holes 560 of the base portion 501, thereby fastening and fixing the flexible printed circuit board 600 to the circuit member 500. When the flexible printed circuit board 600 and the base portion 501 are fastened and fixed by the screws 200, the FPC contact pattern 606 of the flexible printed circuit board 600 and the contact pattern 572 of the circuit member 500 come into contact with each other.

[0088] At this time, the height Hb from the surface 565 of the apex 582 of the convex portion 570 protruding from the surface 565 is higher than the height Ha from the surface 565 of the screw seat 562 protruding from the surface 565 .

[0089] Protrusion 570 also forms R-section 580, which is curved in a direction (radial direction) away from central screw hole 560. Contact pattern 572 is formed from R-section end 581 of R-section 580 to apex 582. Furthermore, height Hc from surface 565 of base 501 to R-section end 581 is lower than height Ha of screw seat 562 protruding from surface 565.

[0090] With this positional relationship, when the flexible printed circuit board 600 is fastened to the base part 501 using the screws 200 , the FPC contact pattern 606 of the flexible printed circuit board 600 is pressed against the contact pattern 572 of the convex part 570 .

[0091] Furthermore, the multiple FPC contact patterns 606 and multiple protrusions 570 are arranged in a circular shape at equal intervals from the screw holes 560. With this configuration, by fastening and fixing the flexible printed circuit board 600 and the circuit member 500 together using the screws 200 at the center of the circle, the contact points can be brought into contact with each other with uniform contact pressure, and the flexible printed circuit board 600 and the circuit member 500 are stably connected.

[0092] With the above-described configuration, it is possible to configure contact points that can be brought into contact with a uniform contact pressure, and the flexible printed circuit board 600 and the circuit member 500 are stably connected.

[0093] Furthermore, since the mounting direction of the flexible printed circuit board 600 relative to the circuit member 500 and the fastening direction of the screws 200 are the same, the mounting work is easy, and even when applied to a robotic automatic assembly device, no complex mechanical device is required.

[0094] In addition, in this embodiment, multiple protrusions 570 are arranged on the contact portion 550, but as long as they can be arranged in a circular shape at equal intervals from the centrally located screw hole 560, three protrusions 570 may be arranged, for example, at intervals of approximately 120 degrees. [Example]

[0095] Hereinafter, the second embodiment will be described with reference to Figures 6 and 8. In the description of the second embodiment, the description of the matters common to the first embodiment will be omitted, and the differences from the first embodiment will be mainly described.

[0096] Fig. 8 is a cross-sectional view illustrating the connection state between the circuit member 500 and the flexible printed circuit board 600 of this embodiment. Fig. 8 shows a cross section of the AA portion of Fig. 6(b).

[0097] A screw seat 562 protruding from a surface 565 is formed on a base portion 501 of the circuit member 500. Furthermore, a protrusion 570 is formed protruding from the surface 565. A contact pattern 572 is formed on the protrusion 570 by metal plating using MID technology, and the contact pattern 572 is connected to the wiring pattern 510. An FPC contact pattern 606 is formed on the flexible printed circuit board 600 at a position facing the contact pattern 572.

[0098] A single screw 200 is inserted into a hole 601 in the flexible printed circuit board 600 and fastened to a screw hole 560 in the base portion 501, thereby fastening and fixing the flexible printed circuit board 600 to the circuit member 500. When the flexible printed circuit board 600 and the base portion 501 are fastened and fixed by the screw 200, the FPC contact pattern 606 of the flexible printed circuit board 600 and the contact pattern 572 of the circuit member 500 come into contact with each other.

[0099] At this time, the height Hd from the surface 565 of the apex 592 of the convex portion 570 protruding from the surface 565 is higher than the height Ha from the surface 565 of the screw seat 562 protruding from the surface 565 .

[0100] Furthermore, the protruding portion 570 forms an inclined portion 590 that is inclined in a direction (radial direction) away from the central screw hole 560. The contact pattern 572 is formed from an end 591 of the inclined portion 590 to an apex 592. Furthermore, the height He from the surface 565 of the base portion 501 to the end 591 of the inclined portion is lower than the height Ha of the screw seat 562 that protrudes from the surface 565.

[0101] With this positional relationship, when the flexible printed circuit board 600 is fastened to the base part 501 using the screws 200 , the FPC contact pattern 606 of the flexible printed circuit board 600 is pressed against the contact pattern 572 of the convex part 570 .

[0102] Furthermore, the multiple FPC contact patterns 606 and multiple protrusions 570 are arranged in a circular shape at equal intervals from the screw holes 560. With this configuration, by fastening and fixing the flexible printed circuit board 600 and the circuit member 500 together using the screws 200 at the center of the circle, the contact points can be brought into contact with each other with uniform contact pressure, and the flexible printed circuit board 600 and the circuit member 500 are stably connected.

[0103] With the above-described configuration, it is possible to configure contact points that can be brought into contact with a uniform contact pressure, and the flexible printed circuit board 600 and the circuit member 500 are stably connected. [Example]

[0104] Hereinafter, the third embodiment will be described with reference to Figures 9 to 12. In the description of the third embodiment, the description of the matters common to the first embodiment will be omitted, and the differences from the first embodiment will be mainly described.

[0105] FIG. 9 shows a perspective view of the circuit member 500 of this embodiment as seen from the rear.

[0106] The base portion 501 of the circuit member 500 is a member formed by resin molding and has high rigidity. On the surface of the base portion 501, pattern wiring 510 is formed by MID (Molded Interconnect Device) technology, and an electric circuit is formed.

[0107] The base portion 501 of the circuit member 500 has pattern wiring 510 formed on the first surface 566 by metal plating, and wired along a desired path.

[0108] The base portion 501 has a second surface 567 formed thereon that is recessed from the first surface 566. The contact portion 550 is formed on the second surface 567. Electrical signals on the base portion 501 of the circuit member 500 are collected at the contact portion 550 by the pattern wiring 510 and transmitted to the flexible printed circuit board 600 that is electrically connected to the contact portion 550.

[0109] A wall portion 568 forming a step is formed between the first surface 566 and the second surface 567, and a C-surface 569 is formed on the wall portion 568.

[0110] Screw holes 560 are formed in the contact portion 550, and screw seats 562 are formed around the holes 560, protruding from the second surface 567 of the base portion 501. A plurality of circular protrusions 570 are formed at equal intervals from the screw holes 560. In other words, the screw holes 560, the screw seats 562, and the plurality of protrusions 570 are formed on the second surface 567. The protrusions 570 protrude from the second surface 567 of the base portion 501. Metal plating is formed on the surface of the protrusions 570 using MID technology, forming a contact pattern 572. The contact pattern 572 is connected to the pattern wiring 510 described above, and the two are electrically connected.

[0111] Further, a shape 556 is formed on the second surface 567, and the shape 556 is a cutout shape with a portion cut out. The shape 556 is used for positioning with a flexible printed circuit board 600, which will be described later.

[0112] FIG. 10 is a diagram illustrating a flexible printed circuit board 600 of this embodiment.

[0113] The flexible printed circuit board 600 is a flexible substrate, and has a structure in which a wiring pattern made of copper foil is sandwiched between a base film made of an insulating film such as polyimide and a coverlay film, and the two films are bonded together using a thermosetting adhesive.

[0114] A hole 601 is formed in the flexible printed circuit board 600, and an FPC contact pattern 606 is formed around the hole. The FPC contact pattern 606 is formed by opening a coverlay film 605 and exposing the copper foil. The FPC contact pattern 606 comes into contact with the contact portion 550 of the circuit member 500 described above, thereby electrically connecting to the contact portion 550 and transmitting an electrical signal. The FPC contact pattern 606 is also wired to an end 610 of the flexible printed circuit board 600 by a wiring pattern (not shown), and an electrical signal is transmitted to a substrate (not shown).

[0115] Furthermore, flexible printed circuit board 600 is formed with a convex portion (second convex portion) 630 having substantially the same shape as notch shape 556, which is used for positioning with circuit board 500. Notch shape 556 and convex portion 630 form a positioning mechanism. Reinforcement material (reinforcement portion) 609 is formed on the opposite side of FPC contact pattern 606. Reinforcement material 609 is a member made of polyimide or glass epoxy resin, etc., and is formed at least in the area where FPC contact pattern 606 is formed.

[0116] 11A and 11B are diagrams illustrating a circuit member 500 and a flexible printed circuit board 600 according to this embodiment. Fig. 11A is a perspective view showing the configuration of the circuit member 500 and the flexible printed circuit board 600 according to this embodiment, and Fig. 11B is a perspective view illustrating the connection state of the circuit member 500 and the flexible printed circuit board 600 according to this embodiment.

[0117] An outer edge 631 of the flexible printed circuit board 600, which has approximately the same shape as the wall portion 568, is guided by the C-face 569 and fits into a predetermined position. At this time, a convex portion 630 of the flexible printed circuit board 600 fits into a shape 556 formed on the second surface 567 of the base portion 501, and the position in the rotation direction around the hole portion 601 is determined. Furthermore, a single screw 200 is inserted into the hole portion 601 of the flexible printed circuit board 600 in the direction of arrow B, and is fastened to the screw hole 560 of the base portion 501 in the direction of arrow B, whereby the flexible printed circuit board 600 is fastened and fixed to the circuit member 500.

[0118] When the flexible printed circuit board 600 and the base part 501 are fastened and fixed with the screws 200, the FPC contact pattern 606 of the flexible printed circuit board 600 and the contact pattern 572 of the circuit member 500 come into contact with each other and are electrically connected, thereby transmitting each electrical signal.

[0119] FIG. 12 is a diagram illustrating the connection state between the circuit member 500 and the flexible printed circuit board 600 of this embodiment.

[0120] With the above-described configuration, the outer edge 631 of the flexible printed circuit board 600 fits within the wall 568 formed on the base portion 501 of the circuit member 500, and further, the convex portion 630 fits within the shape 556 formed on the second surface 567 of the base portion 501. This determines the position in the rotation direction around the hole 601. At this time, there is a gap of distance j between the wall 568 of the shape 556 formed on the base portion 501 and the convex portion 630 of the flexible printed circuit board 600.

[0121] Furthermore, when the flexible printed circuit board 600 and the circuit member 500 are fastened and fixed by the screws 200, the FPC contact pattern 606 of the flexible printed circuit board 600 and the contact pattern 572 of the circuit member 500 come into contact with each other. At this time, the FPC contact pattern 606 covers the contact pattern 572. There is a distance k between the end of the FPC contact pattern 606 and the end of the contact pattern 572 in the rotational direction around the hole 601. The distance j is smaller than the distance k.

[0122] With the above-described configuration, even if the flexible printed circuit board 600 rotates when it is fastened to the base portion 501 with the screws 200, the movement amount is limited to the distance j. This prevents the flexible printed circuit board 600 and the circuit member 500 from becoming disconnected.

[0123] Furthermore, the mounting direction of the flexible printed circuit board 600 relative to the circuit member 500 and the fastening direction of the screws 200 are the same. Furthermore, the C-face 569 has a guide shape. This makes the mounting work easier, and even when applied to an automated robotic assembly machine, no complicated mechanical device is required.

[0124] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist of the present invention. [Explanation of symbols]

[0125] 1. Electronic equipment (imaging devices) 500 Circuit Components 600 boards 200 Fastening members 510 Conductive Pattern 501 base 560,562 Fastened part 570 Convex 572 First contact pattern 601 Hole 606 Second contact pattern

Claims

1. An electronic device having a circuit member, a substrate, and a fastening member for fixing the substrate to the circuit member, The circuit member is a base portion on which a conductive pattern is formed; a fastening portion provided on the base portion and to which the fastening member is fixed; The base portion includes a plurality of protrusions arranged in a substantially circular shape with the fastened portion as the center, a first contact pattern is formed on each of the plurality of protrusions; a hole into which the fastening member is inserted is formed in the substrate; The substrate is a plurality of second contact patterns arranged on the substrate in a substantially circular shape centered on the hole so as to face the first contact pattern, When the fastening member is fixed to the fastened portion through the hole portion, the first contact pattern and the second contact pattern come into contact with each other, the fastened portion includes a convex portion formed on the base portion, The electronic device according to claim 1, wherein the first contact pattern formed on each of the plurality of protrusions is located at a higher position than the protrusion.

2. the electronic device further includes a positioning mechanism for positioning the substrate relative to the circuit member; The electronic device described in claim 1, characterized in that the positioning mechanism comprises an engaging portion provided on either the base portion or the substrate, and an engaged portion provided on the other of the base portion or the substrate, which engages with the engaging portion to position the substrate relative to the circuit member.

3. 3. The electronic device according to claim 1, wherein the substrate includes a reinforcing portion in an area where the plurality of second contact patterns are formed.

4. the fastening member is a screw, 4. The electronic device according to claim 1, wherein the fastening portion comprises a screw hole formed in the base portion and the convex portion formed around the screw hole.

5. The electronic device according to any one of claims 1 to 4, characterized in that each of the plurality of convex portions has a portion extending radially from the center of an approximately circular shape centered on the fastened portion, protruding from the surface of the base portion, and has a curved shape having a curvature along the radial direction.

6. The electronic device according to any one of claims 1 to 4, characterized in that the portions of the plurality of convex portions extending radially from the center of the approximately circular shape centered on the fastened portion protrude from the surface of the base portion and have a surface shape inclined along the radial direction.

7. 7. The electronic device according to claim 1, wherein the plurality of protrusions includes at least three protrusions.

8. the base portion includes a first surface, a second surface recessed relative to the first surface, and a wall portion formed between the first surface and the second surface; the conductive pattern is directly formed on the first surface, the second surface is provided with the fastened portion and the plurality of protrusions, 8. The electronic device according to claim 1, wherein the substrate includes an outer edge portion having substantially the same shape as the wall portion.

9. The wall portion has a C-surface formed thereon, The electronic device according to claim 8 , wherein the outer edge is guided by the C-surface and fits within the second surface.

10. The second surface has a notch formed therein, the substrate has a second protrusion having substantially the same shape as the notch, 10. The electronic device according to claim 8, wherein the second protrusion fits into the notch, thereby positioning the substrate relative to the circuit member.

11. the second contact pattern is in contact with the first contact pattern so as to cover the first contact pattern; The electronic device described in claim 10, characterized in that the distance between the cutout-shaped wall portion and the second convex portion is smaller than the rotational distance around the hole portion between the end of the second contact pattern and the end of the first contact pattern corresponding to the end of the second contact pattern.

12. The electronic device according to claim 1 , wherein the fastening member is a single fastening member.

13. 13. The electronic device according to claim 1, wherein the mounting direction of the substrate and the fastening direction of the fastening member are the same with respect to the circuit member.

Images