JP2017116613A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic apparatus with which it is possible to optimize an extra length of a flexible printed board attached to a rotary hinge mechanism by a simple method without requiring costs.SOLUTION: The electronic apparatus comprises an apparatus body (1), a display unit (20) rotatably provided on the rear side of the apparatus body in an opening/closing direction via a hinge mechanism (30), and a flexible printed board (65) for electrically connecting the apparatus body and the display unit. The hinge mechanism (30) is provided with a protective member (75) for protecting the flexible printed board (65) and having a flexible part (76c) formed therein. The extra length of the flexible printed board (65) changes in accordance with the rotation of the hinge mechanism (30), and when the flexible part (76c) is subjected to a greater-than-prescribed load due to a reduction in the extra length, the flexible part (76c) is bent.SELECTED DRAWING: Figure 7

Description

  The present invention relates to an electronic device having a hinge mechanism. Specifically, the present invention relates to an electronic apparatus having a flexible printed board having flexibility for wiring the inside of an electronic apparatus having a hinge mechanism.

  2. Description of the Related Art Conventionally, digital cameras that record image signals, image information, and the like output from an image sensor as data files have been widely used. A digital camera (hereinafter referred to as a “photographing device”) forms an optical image on an image sensor with a photographing lens and compresses the image data obtained by photoelectric conversion with the image sensor, for example, image data in a file format such as JPEG. Is given.

  A display device such as a liquid crystal display (LCD) is provided on the rear surface of the photographing device, and is used for confirming a subject image to be photographed and for reproducing and displaying the photographed image. In some imaging apparatuses, a display unit having a display device is rotatably supported by a hinge mechanism with respect to the imaging apparatus body. By rotating the display unit, the display unit of the display unit can be viewed in an optimum state even when the position of the photographing apparatus with respect to the photographer is changed. In addition, by enabling the display unit to be rotated 180 ° upward, the display unit of the display unit is directed to the front side of the photographing apparatus body, so that the photographer can take a picture while checking the photographer himself / herself on the display unit. It is possible to provide a suitable position. A photographing apparatus having a function capable of rotating the display unit by 180 ° in this way is generally known from Patent Document 1.

  In such an electronic apparatus, it is common to connect the display unit and the photographing apparatus with a flexible printed board having flexibility, which is a kind of electrical wiring board. However, if the display unit can be rotated, the length required for the flexible printed circuit board varies depending on the rotation angle of the display unit. Therefore, depending on the rotation angle, an extra length is generated in the flexible printed circuit board, and slackening occurs. In some cases, the slack may protrude from the main body of the photographing apparatus. If the photographer touches or hooks, there is a concern about inadvertent damage or disconnection. On the other hand, if the flexible printed circuit board is shortened, the length of the flexible printed circuit board may be insufficient depending on the rotation angle, which may cause disconnection of the flexible printed circuit board or breakage of connectors. For this reason, the length of the flexible printed circuit board cannot be shortened simply. Therefore, in Patent Document 1, when a surplus length occurs in the flexible printed circuit board, a wire spring is used to accommodate the surplus length in the apparatus.

JP-A-2015-144363

  However, in patent document 1, a wire spring was needed and the additional cost and arrangement space were needed.

  The present invention has been made in view of such problems of the prior art, and the extra length of the flexible printed circuit board attached to the rotary hinge mechanism is set to the rotation angle of the display unit by a simple method without cost. It is an object of the present invention to provide an electronic device that can be optimized regardless.

In order to achieve the above object, an electronic apparatus according to the present invention provides:
The device main body (1), the display unit (20) provided on the back side of the device main body via a hinge mechanism (30) so as to be rotatable in the opening / closing direction, and the device main body and the display unit are electrically connected. A flexible printed circuit board (65),
The hinge mechanism (30) includes a protective member (75) for protecting the flexible printed circuit board (65) having the flexible portion (76c) formed thereon,
The flexible printed circuit board (65) has a surplus length that changes according to the rotation of the hinge mechanism (30), and when the load on the flexible section (76c) exceeds a predetermined value due to a decrease in the surplus length, the flexible section (76c) ) Is bent.

  According to the electronic device of the present invention, it is possible to optimize the extra length of the flexible printed circuit board attached to the rotary hinge mechanism by a simple method without incurring costs.

Perspective view of the photographing device Exploded perspective view of imaging device Deployment perspective view of hinge mechanism Perspective view of substrate and flexible printed circuit board The figure which shows an imaging device when a display unit exists in a 1st position The figure which shows an imaging device when a display unit exists in a 2nd position. The figure which shows an imaging device when a display unit exists in a 3rd position.

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

  The first embodiment of the present invention will be described below with reference to FIGS.

  FIG. 1 is a perspective view of the photographing apparatus of the present invention. FIG. 1A shows a front perspective view of the photographing apparatus 1.

  A photographing optical system lens barrel unit 2 (hereinafter referred to as a barrel unit) that forms a subject image on an imaging element is fixed to the photographing apparatus 1. The lens barrel unit 2 is a collapsible zoom lens and is retracted in the photographing apparatus 1 when being carried.

  An imaging element (not shown) such as a CCD or a CMOS image sensor that photoelectrically converts an optical image to generate image data is mounted behind the lens barrel unit 2.

  The photographing apparatus 1 is mounted with a main board (not shown), an auxiliary board (not shown) and the like on which a processing circuit for converting image data generated by an image sensor (not shown) into digital information is mounted.

  Reference numeral 3 denotes a built-in strobe unit that automatically raises the light emission window and emits light when the subject is not bright enough during photographing.

  Reference numeral 4 denotes a release button, which can be pressed in two stages. When the release button 4 is pressed halfway, a shooting preparation operation (photometry operation, distance measurement operation, etc.) is started. When the release button 4 is fully depressed in the second stage, the subject is photographed and the image data of the subject image is recorded on a built-in recording medium (not shown).

  Reference numeral 5 denotes a rotary operation type zoom lever, which is attached to the outer periphery of the release button 4. The zoom lever 5 is an operation unit that receives an operation input by an operator. When the zoom lever 5 is rotated clockwise as viewed from the top surface of the photographing apparatus 1, the zoom lens performs a zooming operation toward the Tele side (direction in which the angle of view becomes narrower), and conversely when rotated counterclockwise, the photographing lens. Performs a zoom operation on the Wide side (direction in which the angle of view widens).

  Reference numeral 6 denotes a power button, which is provided beside the zoom lever 5.

  Reference numeral 7 denotes a microphone hole that takes sound into a built-in microphone, and is provided above the barrel unit 2.

  Reference numeral 8 denotes a mode setting dial, which is supported so as to be rotatable with respect to the photographing apparatus 1. A plurality of marks (not shown) corresponding to various shooting modes are printed on the top surface of the mode setting dial 8, and by aligning the index of the shooting device with this mark, a still image shooting mode corresponding to the mark is printed. In addition, settings such as a moving image shooting mode and a captured image reproduction mode can be performed.

  A main battery (not shown) serving as a power source and a recording medium (not shown) for recording a photographed subject image are incorporated below the photographing apparatus 1. The main battery may be a single use primary battery or a rechargeable secondary battery.

  FIG. 1B shows a rear perspective view of the photographing apparatus of the present invention.

  A power supply / signal input / output jack (not shown) is provided on the side surface of the photographing apparatus 1 and is covered with a jack cover 11 for protecting the jack. By opening the jack cover 11, the input / output jacks are exposed, and various cables can be inserted and removed.

  A display unit 20 provided with a display device (LCD) 21 such as a liquid crystal is provided on the rear surface of the photographing device 1. The display device 21 is used for confirming a subject image to be photographed and for reproducing and displaying the photographed image. The display unit 20 is attached to the photographing apparatus 1 via a hinge mechanism 30 (details will be described later) so as to be rotatable in the vertical direction.

  Reference numeral 12 denotes an operation button group, which is provided beside the display unit 20. The cross button arranged at the center of the operation button group 12 can be pushed into four places, up, down, left and right, and one center part. This function is used when instructing functions such as changing the display form and switching to the playback screen.

  FIG. 2 is an exploded perspective view of the photographing apparatus, and FIG. 2A is an exploded perspective view of the display unit 20, the hinge mechanism 30, and the back cover 13.

  The display device 21 includes a protective window 21b, a capacitive touch panel (not shown) in which an input operation is performed when the photographer touches, a display panel (not shown), and a bezel 21d formed of a sheet metal. Has been. The protective window 21b is a panel that protects the display panel and the touch panel from scratches and dirt. Generally, tempered glass is used, and the thickness is about 0.5 to 1.0 mm. As the protective window material, a transparent resin such as an acrylic resin or a polycarbonate having a high light transmittance can be used. The outer shape of the protective window is larger than that of the display panel and protects the whole. A touch panel (not shown) is a capacitive type, and wiring of the touch panel is formed by ITO (Indium Tin Oxide) which is a transparent conductive film. Generally, it is made of glass, but may be a plastic substrate as long as it is transparent and can withstand temperatures such as annealing of ITO. As the transparent resin, for example, acrylic, polycarbonate or the like can be used. The bezel 21d is configured on the opposite side of the display surface.

  The display device 21 is bonded to the exterior cover 22 by a double-sided double-sided tape (not shown) formed along the outer shape of the protective window 21b. The exterior cover 22 is an external part that covers the periphery of the display device 21, and a coating process or a graining process is applied to the surface to form an external surface. The adhesive strength of double-sided tape with a square shape is high, and it is desirable to be strong against impact. This is to prevent the display device 21 from being lifted and peeled off due to an impact such as a drop, and further, cracking due to the display device 21 jumping out of the outer cover 22. Further, it is possible to eliminate the fear of disconnection of the flexible printed circuit board connected to the display panel or damage to the connectors due to the display device 21 floating.

  Reference numeral 64 denotes a substrate, which is arranged on the bezel 21d on the back side of the display device 21, and is fixed to the bezel 21d by a double-sided tape (not shown).

  A flexible printed board 65 is connected to the board 64 by a connector 66c mounted on the board 64 (details will be described later).

  Reference numeral 24 denotes a rear light-shielding cover, which is formed of a mold resin member and blocks light leaking from the display panel in the rear direction. The rear light shielding cover 24 is assembled to the outer cover 22 from the direction opposite to the direction in which the display device 21 is assembled, and is fixed in a state of being sandwiched between the outer cover 22 and the hinge device 30.

  Reference numeral 27 denotes a magnet which is housed in a recess 22a formed in the exterior cover 22 and is fixed by adhesion. The magnet 27 is used as a magnetic field generating unit, and magnetic flux is detected by a magnetic sensor (not shown) disposed in the photographing apparatus 1 and functions as a display screen changeover switch of the display unit 20.

  A magnetic sensor generally uses a giant magnetoresistance (GMR) element or a semiconductor Hall element as an element for detecting magnetism. A GMR element is a device that detects a magnetic field parallel to a main surface by using a magnetoresistive effect, and has an property that electrical resistance increases as the magnetic field increases (specifically, nickel, iron, and cobalt are mainly used). Component). The GMR sensor is formed by incorporating this GMR element into the determination circuit. In this embodiment, a threshold value is set for the GMR element, a magnetic field that changes depending on the position of the magnet 27 is detected by the GMR sensor, and the display screen of the display unit 20 is switched.

  The display unit 20 is configured to be rotatable through the hinge mechanism 30 from the state shown in FIG. 1B (0 ° state) to 180 °. When it is detected that the display unit 20 is rotated by a predetermined angle or more, the display unit 20 displays The screen is switched from the normal state to an image that is vertically and horizontally reversed. The display screen transitions while maintaining the inversion of the image until it is rotated 180 ° from the detected angle. This state is suitable for so-called self-portrait shooting where the photographer takes a picture of himself because the shooting direction of the shooting optical system and the direction of the display screen are in the same direction.

  A protective member 75 protects the flexible printed circuit board 65. The protection member 75 is a member formed of mold resin, and has holes 76a and 76b. The holes 76a and 76b are fixed to holes 31d and 31e formed in the base plate 31, respectively, with screws (not shown).

  FIG. 2B is a perspective view of the expanded state of 75 parts of the protection member.

  In the drawing, the flexible printed circuit board 65 is partially displayed for convenience of explanation. Further, in order to show the protective member 75 in detail, only the protective member 75 is enlarged and displayed in the lower right part of the range surrounded by a broken line in FIG. 76c is a flexible part, and is connected with a thin arm from both ends so as to bend with a small load. Although details will be described later, the central portion 76d of the flexible portion 76c protrudes from both ends. A hole 76e through which the flexible printed circuit board 65 is inserted is formed below the flexible portion 76c. The flexible printed circuit board 65 is inserted through the hole 76 e and wired between the base plate 31 and the protection member 75. Reference numeral 13 denotes a back cover. A hole 13c is formed in the back cover 13, and a flexible printed circuit board 65 is inserted into the hole 13c so that the wiring is connected to the inside of the photographing apparatus 1.

  Reference numeral 30 denotes a hinge mechanism, and the stand plates 38 and 39 which are a part of the hinge mechanism 30 are fixed to the back cover 13 of the photographing apparatus 1 by fastening screws (not shown). The back cover 13 is a member formed by pressing a metal material such as aluminum. Similarly, an arm plate 32, which is a part of the hinge mechanism 30, is externally fixed to a mounting portion formed on the exterior cover 22 by screw fastening (not shown). As described above, the display unit 20 is fixed to the main body of the photographing apparatus 1 via the hinge mechanism 30.

  FIG. 3 is an exploded perspective view of the hinge mechanism 30 of the present invention.

  Reference numeral 31 denotes a base plate. In the drawing, the rotation axis A (31a) is defined as the hinge rotation axis disposed above the photographing apparatus 1, and the rotation axis B (31b) is defined as the hinge rotation axis disposed below. . Reference numerals 38 and 39 denote the above-described stand plates, which are provided with rotation shaft holes (38b and 38b) on the standing walls of the left and right stand plates 38 and 39, respectively, and are formed coaxially with the rotation shaft B (31b).

  Reference numeral 32 denotes the above-described arm plate. A rotation shaft hole (32a) is provided in the standing wall of the arm plate 32, and is formed coaxially with the rotation shaft A (31a).

  The support pins B40 and 41 are inserted into the rotating shaft B (31b) of the base plate 31 together with the stand plates 38 and 39 and the click plates B42 and 43, respectively, and are fixed by caulking. Thereby, the base plate 31 is rotatably connected to the stand plates 38 and 39. The base plate 31 receives the rotational frictional resistance force from the click plates B42 and 43, and can hold the friction at each rotational position.

  The support pins A46 and 47 are inserted into the base plate rotation axis A (31a) together with the arm plate 32 and the click plates A48 and 49, and are fixed by caulking. Thereby, the arm plate 32 is rotatably connected to the base plate 31. The arm plate 32 receives rotational frictional resistance from the click plates A48, 49, and can hold friction at each rotational position. The base plate 31, the arm plate 32, and the stand plates 38 and 39 are parts formed by pressing a metal material, and are configured to have high strength with respect to the rotation operation.

  The hinge device 30 is configured as described above, and the display unit 20 is attached to the photographing device 1 main body via the hinge mechanism 30 so as to be rotatable in the vertical direction.

  FIG. 4 is a perspective view of the substrate 64 and the flexible printed circuit board 65.

  The board 64 is formed in a double-sided board configuration and is mounted with connectors 66a and 66b, to which flexible printed boards (not shown) wired from the display device 21 are connected. The electrical signal of the display device 21 is transmitted to the flexible printed circuit board 65 by the connection of the connector 66c and the connection terminal portion 68a of the flexible printed circuit board 65 after passing through the electronic circuit on the circuit board 64. Further, the connection terminal portion 68b at the other end of the flexible printed circuit board 65 and a main board (not shown) configured in the photographing apparatus 1 are connected to transmit an electric signal of the display device 21 to the main board. ing. The flexible printed circuit board 65 is formed with a single-sided board configuration.

  The flexible printed circuit board 65 is formed with a first folded portion 67a and a second folded portion 67b. Furthermore, the flexible printed circuit board 65 is configured to have positioning holes 69a and 69b.

  The flexible printed circuit board 65 has an electric signal pattern for the display device 21 extending from the connection terminal portion 68a to the connection terminal portion 68b. Some electric signals wired from the display device 21 are differential signals for the differential transmission method. Among the signal patterns formed on the flexible printed circuit board 65, the differential signal pattern is formed near the center of the flexible printed circuit board, and the impedance matching is performed so that the differential signal pattern satisfies a predetermined differential impedance specification. Formed to go.

  With reference to FIGS. 5 to 7, the operation of the flexible printed circuit board 65 when the display unit 20 rotates with respect to the photographing apparatus 1 will be described.

  FIG. 5 is a diagram illustrating a first position of the display unit 20, FIG. 5A is a rear perspective view of the photographing apparatus 1, and FIG. 5B is a cross-sectional view of the photographing apparatus 1.

  The first position of the display unit 20 is a position used when storing or photographing a front subject. When the display unit 20 is in the first position, the second folded portion 67b of the flexible printed board 65 is folded on the front side (upper side in the drawing) with respect to the rotation axis B (31b). For this reason, the path length of the flexible printed circuit board 65 is shortened, and an extra length is generated in the flexible printed circuit board 65. For this reason, slack has occurred in the first folded portion 67a. However, since the flexible printed circuit board 65 is not exposed to the outside at the first position and the photographer does not touch the slack, there is no fear of inadvertent damage or disconnection. The flexible printed circuit board 65 is bent at the first folded portion 67a and is inserted into the hole 76e below the protruding portion 76d of the flexible portion 76c provided in the protection member 75. The flexible printed circuit board 65 is inserted into the hole 13c formed in the back cover 13 through the base plate 31 and the protective member 75, and thereby connected to the inside of the photographing apparatus 1.

  FIG. 6 is a diagram illustrating a second position of the display unit, and FIG. 6A is a rear perspective view of the photographing apparatus 1.

  From the state where the display unit is in the first position, when a finger is placed on the lower part of the exterior cover 22 of the display unit 20 and rotated about 180.degree. In the direction of the arrow around the rotation axis A (31a) of the hinge mechanism 30, The display screen of the display unit 20 is directed to the front side of the photographing apparatus 1. This position is suitable for so-called selfies.

  FIG. 6B is a cross-sectional view of the photographing apparatus 1.

  As the display unit 20 rotates from the first position to the second position, the flexible printed circuit board 65 is bent in the reverse direction at the first folded portion 67a. At this time, although the flexible printed circuit board 65 is slack, the flexible printed circuit board 65 is wired in the first folded portion 67a by the exterior cover 22 in a U-shape, so the hinge mechanism is the first. The extra length is reduced compared to the position of. However, when the display unit is in the second position, the flexible printed circuit board 65 is exposed to the outside and is touched by the photographer. At this time, the protruding portion 76d provided on the protection member 75 is provided at a position that obstructs the shortest path of the flexible printed circuit board 65 (projecting in the Z direction in the figure), and the path length as shown in FIG. 6B. Is earned, the occurrence of slack is prevented, and the extra length is optimized.

  As described above, it is possible to prevent the photographer from inadvertently being damaged or disconnected.

  FIG. 7 is a diagram illustrating a third position of the display unit, FIG. 7A is a rear perspective view of the photographing apparatus 1, and FIG. 7B is a cross-sectional view of the photographing apparatus 1.

  This is the position rotated from the second position of the display unit 20 in the direction of the arrow in the figure around the rotation axis B (31b) of the hinge mechanism 30. Although it is a position that is not often used during normal photographing, the second folded portion 67b of the flexible printed circuit board 65 is extended compared to the second position by rotating the rotation axis B (31b) from the second position, so that it is flexible. In this state, the extra length of the printed circuit board 65 is minimized. Since there is a risk of disconnection of the flexible printed circuit board 65 or breakage of the connectors, it is necessary to prevent the flexible printed circuit board 65 from being short at this position. However, the protruding portion 76d provided on the protective member 75 is provided at a position that obstructs the shortest path of the flexible printed circuit board 65, and the path length is long, so that the length of the flexible printed circuit board 65 is insufficient. ing. At this time, the projecting portion 76d is deformed in the −Z direction in the figure, whereby the path length of the flexible printed circuit board 65 is shortened, and the shortage of the flexible printed circuit board 65 is solved.

  The flexible portion 76 of the protection member 75 is formed with arms that are narrower at both ends than the central projecting portion 76d. For this reason, when the display unit 20 is in the third position, the flexible portion 76c can be deformed by a force about the tension of the flexible printed circuit board 65.

  From the above, the insufficient length of the flexible printed circuit board 65 is absorbed by the deformation of the flexible portion 76c, and the extra length is optimized. As described above, disconnection of the flexible printed circuit board 65, breakage of connectors, and disconnection are prevented. Further, it is possible to minimize the extra length of the flexible printed circuit board 65 when the display unit is in the second position.

  When the display unit is in a state other than the first to third positions, the surplus length of the flexible wiring board 65 is smaller than the first position and larger than the third position, and the description is omitted.

  With the above configuration, it is possible to optimize the surplus length of the flexible printed circuit board attached to the rotary hinge mechanism by a simple method without incurring costs regardless of the rotation angle of the display unit.

1 photographing device, 13 back cover, 20 display unit, 21 display device,
24 Back light shielding cover, 30 Hinge mechanism, 31 Base plate, 31a Rotating shaft A,
32 arm plate, 65 flexible printed circuit board, 67a first folded portion,
75 protective member, 76c flexible part, 76d protrusion

Claims (2)

The device main body (1), the display unit (20) provided on the back side of the device main body via a hinge mechanism (30) so as to be rotatable in the opening / closing direction, and the device main body and the display unit are electrically connected. A flexible printed circuit board (65),
The hinge mechanism (30) includes a protective member (75) for protecting the flexible printed circuit board (65) having the flexible portion (76c) formed thereon,
The flexible printed circuit board (65) has a surplus length that changes according to the rotation of the hinge mechanism (30), and when the load on the flexible section (76c) exceeds a predetermined value due to a decrease in the surplus length, the flexible section (76c) ) Is bent. The flexible part (76c) provided on the protective member (75) has a projecting part (76d) in which the part in contact with the flexible printed circuit board (65) protrudes toward the flexible printed circuit board (65) from both ends. The electronic device according to claim 1, wherein the electronic device is formed.