JP2010049177A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus structured such that an operator can easily assemble an biasing member without using any tool or the like when assembling the biasing member, pressing force (contact force) of the biasing member to a conductive member is made stable, and it is hardly influenced by external noise such as static electricity. <P>SOLUTION: An image capturing apparatus includes a front cover 1, a battery case 21, a ground sheet metal 25, and a battery cover unit 26. In the battery cover unit 26, a torsion coil spring 33 has conductivity, and the first end 33b thereof is engaged with a slider plate 32 and the second end 33c thereof is engaged with the battery case 21, and also biases a battery cover 31 to a battery chamber in an opening direction. A contact part 33d pressing the ground sheet metal 25 so as to be electrically connected thereto is provided at the second end 33c of the torsion coil spring 33. A direction where the contact part 33d of the torsion coil spring 33 presses the ground sheet metal 25 is made different from a charge direction where the torsion coil spring 33 obtains biasing force acting on the battery cover 31. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electronic device capable of electrical conduction between a device main body and a lid member attached to the device main body so as to be opened and closed.

  2. Description of the Related Art Conventionally, an imaging apparatus such as a digital camera provided with an electrical component that is driven by power supply has been provided with a battery case for storing a battery to which a battery lid is attached so as to be opened and closed. As a battery lid opening / closing mechanism provided in the imaging apparatus, a mechanism that performs an opening / closing operation by rotating the battery lid about a rotation axis is often used. At that time, a torsion spring may be used as means for urging the battery lid in the opening direction.

  The following techniques have been proposed for assembling the torsion spring (see, for example, Patent Document 1). In Patent Document 1, the inner diameter portion of the coil portion of the torsion spring is held by the outer shape portion (circumferential wall portion) of the rotating shaft, and one arm (fixed portion) of the torsion spring is hooked on a locking rib or hole and temporarily held. On the other hand, a configuration is disclosed in which the other arm (actuating portion) is hooked on the locking portion of the main body.

  FIG. 19 is a perspective view showing a state in which a battery lid of an imaging apparatus according to a conventional example is closed. FIG. 20 is a perspective view illustrating a state where the battery cover of the imaging device is opened. 19 and 20 only show parts related to the opening and closing of the battery lid.

  19 and 20, when the battery cover 200 is slid by operating the lock release lever of the imaging device (digital camera), the battery cover 200 is in the state shown in FIG. 19 by the biasing force of the torsion coil spring 203 having conductivity. Automatically rotate to the state of FIG. The battery chamber 204 made of non-conductive resin has a role as a main structure of the imaging device. The conductive metal chassis 201 and the battery chamber 204 are positioned and fixed to each other at a location not shown. The conductive slider plate 202, which is a component of the battery lid 200, is supported by a shaft member with respect to the battery chamber 204, and is always attached in the opening direction (the state of FIG. 20 is open) by the torsion coil spring 203. It is configured to be supported.

  Imaging devices such as digital cameras and various electronic devices have various considerations so that even when external noise, that is, static electricity enters from the outside, the device is not damaged or abnormal operation occurs. In particular, when static electricity is applied to electrically floating metal parts (metal parts not connected to the ground), after a certain amount of static electricity has been charged, secondary electrical discharge occurs on other electrical parts or printed wiring boards. There is. Unexpected electrical noise generated at this time may cause damage or abnormal operation of the device.

As described above, in the imaging apparatus, the conductive slider plate 202 that is a component of the battery lid 200 is brought into contact with the conductive metal chassis 201 via the conductive torsion coil coil spring 203. It is configured to be electrically connected.
JP 2000-9202 A

  However, the method for assembling the torsion spring described in Patent Document 1 has the following problems. When assembling the torsion spring, it is necessary to bend the arm on the side where the torsion spring is not temporarily held against the spring pressure and hook it on the engaging portion of the main body. Therefore, the assembling worker has to assemble the torsion spring using a tool such as tweezers, and there is a problem in terms of assembling workability.

  On the other hand, the battery lid opening / closing mechanism of the imaging apparatus (digital camera) shown in FIGS. 19 and 20 has the following problems. In a mechanism that opens and closes by rotating the battery lid 200, one end 203a of the torsion coil spring 203 is inserted into a groove formed by the metal chassis 201 and the battery chamber 204 and engaged with the apparatus main body. ing. However, there is a problem that the insertion of the end portion 203a of the torsion coil spring 203 is troublesome and takes time and labor for assembly work.

  Further, in order to electrically connect the slider plate 202 and the metal chassis 201, the end 203 a of the torsion coil spring 203 is brought into contact with the inner wall surface of the metal chassis 201. In this case, the pressing force (contact force) of the end 203a of the torsion coil spring 203 against the metal chassis 201 uses the biasing force of the torsion coil spring 203 that biases the battery cover 200 in the opening direction. Therefore, there is a problem that the pressing force (contact force) changes between the closed state and the opened state of the battery cover 200 and is not stable.

  An object of the present invention is to enable easy assembly without the use of a tool or the like by the operator when the urging member is assembled, to stabilize the pressing force (contact force) of the urging member against the conductive member, and to prevent external charges such as static electricity. An object is to provide an electronic device having a structure that is not easily affected by noise.

  In order to achieve the above-described object, the present invention provides an electronic device including a storage unit that includes a main body member and a cover member that covers an open portion of the main body member. A lid member that is pivotally supported via a pivot shaft and that can be opened and closed with respect to the storage portion; a conductive member that is conductive and attached to the cover member; And an urging member that urges the lid member in the opening direction with respect to the storage portion, with the other end engaged with the body member and the other end engaged with the lid member, A contact portion that is electrically connected by pressing the conductive member is formed on the one end portion of the biasing member, and the contact portion of the biasing member presses the conductive member; and The urging member is different from the charge direction for obtaining the urging force acting on the lid member. And characterized in that.

  According to the present invention, the direction in which the contact portion of the urging member presses the conductive member is different from the charge direction for obtaining the urging force that acts on the lid member. Therefore, it is possible to set the contact force with respect to the conductive member separately from the turning force (biasing force) with respect to the main body member in the urging member. Further, when the urging member and the lid member are assembled to the electronic device main body, no urging force is generated in the urging member. This makes it possible for the operator to perform simple assembly without using tools, etc. when assembling the urging member, stabilizes the pressing force (contact force) on the conductive member, and is less susceptible to external noise such as static electricity. It is possible to provide an electronic device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  First, before describing the battery lid holding opening and closing mechanism of the imaging apparatus according to the embodiment of the present invention, the overall configuration of the imaging apparatus will be described with reference to FIGS.

  FIG. 2 is an exploded perspective view of the components of the imaging apparatus according to the present embodiment as viewed from the front side. FIG. 3 is an exploded perspective view when the components of the imaging apparatus are viewed from the back side.

  2 and 3, the imaging device (camera) includes a front cover 1, a rear cover 3, a metal chassis 6, a lens barrel unit 11, a battery case 21, a ground metal plate 25, a battery lid unit 26, and the like. Details of the battery lid unit 26 constituting the battery lid holding opening / closing mechanism will be described later.

  The housing of the imaging device is roughly divided into two cover configurations, a front cover 1 and a rear cover 3. The front cover 1 (cover member) is a member that covers the front side of the imaging apparatus, and the rear cover 3 is a member that covers the back side of the imaging apparatus. In the present embodiment, both the front cover 1 and the rear cover 3 are formed of a resin member (for example, PC (polycarbonate)). In addition, in order to improve the strength of the front cover 1 and the rear cover 3, the front cover 1 and the rear cover 3 may be formed of a material containing a reinforcing material such as glass fiber.

  A decorative ring 2 is bonded to the front cover 1 to enhance the appearance design. The front cover 1 is provided with a finder objective window 1a. The front cover 1 is attached with a conductive ground metal plate 25 (conductive member). The ground metal plate 25 is configured to contact an end portion of a torsion coil spring 33 (see FIG. 15 and the like), which will be described later, and also contact the metal chassis 6.

  The rear cover 3 is provided with a large rectangular hole 3a. A substantially colorless and transparent window member 4 is adhered and fixed to the hole 3 a of the rear cover 3 with a double-sided tape so as to close the hole 3 a from the outside of the rear cover 3. In the present embodiment, the window member 4 uses PMMA (acrylic) in terms of transparency and strength. In addition, as a forming material of the window member 4, there is an option of PC (polycarbonate) if the workability is important, but there is a side that the surface strength is slightly weak. In addition, if strength is emphasized, there is an option of tempered glass, but there are problems of high cost and damage.

  The back surface of the window member 4 is subjected to blind printing in a frame shape, and a double-faced tape is attached to the portion that is blind-printed in a square shape, and then adhered and fixed to the rear cover 3. As long as the adhesive strength can be maintained, it is not necessary to bond the four sides of the window member 4, and two or three sides may be used. Further, the window member 4 is provided with an antireflection coat, a hard coat for curing the surface, an antifouling coat for facilitating removal of dirt, an antistatic coat for suppressing adhesion of dust due to static electricity, and the like.

  A jack cover 110 for covering the external power connector 53 and the USB connector 54 mounted on the main wiring board 51 is provided on the side of the rear cover 3. The jack cover 110 is made of a relatively soft resin, and its hinge portion is configured to be easily bent.

  Further, a strap base 113 is fitted from the inner wall surface side of the rear cover 3 toward the outer wall surface side (appearance side). The strap base 113 is configured to be fastened together with the front cover 1 and the rear cover 3 together with an external screw from the rear. Note that the strap base 113 is formed of resin or die casting having relatively high strength. The strap base 113 is provided with a string-through hole for passing a wrist strap for preventing an accidental drop of the imaging apparatus.

  The metal chassis 6 is a member for increasing the rigidity of the imaging apparatus main body, and fixes various units such as the lens barrel unit 11 and the finder unit 14 and exterior covers such as the front cover 1 and the rear cover 3. The metal chassis 6 is often made of SUS (stainless steel) having a high strength, but may be a general steel material if the need for strength is not so high. The metal chassis 6 has a relatively low surface resistance because it contacts the ground metal plate 25, the printed wiring board, etc., and is electrically connected.

  The lens barrel unit 11 is a unit including a lens barrel that holds a photographing lens and the like. A gear unit 13 equipped with a zoom motor for driving the lens barrel is integrally assembled with the lens barrel unit 11. The lens barrel unit 11 is fixed to the metal chassis 6 with three screws 12. The finder unit 14 is a unit used for determining the photographing range, and is fixed to the lens barrel unit 11 with screws from the upper surface thereof.

  The battery case 21 is for holding a battery (not shown: for example, an AA type dry battery), and is fixed to the metal chassis 6 by screws 22a and 22b. The battery case 21 is provided with an opening formed by removing a part of the wall. The open part of the battery case 21 is covered with the front cover 1 during assembly. The front cover 1 is also provided with a part of the function of the battery case 21, and the front cover 1 and the battery case 21 are combined to form a battery chamber (housing portion).

  Two battery contact pieces (for + pole and -pole) made of leaf springs (see FIG. 10) are arranged above the battery case 21. Each of the two battery contact pieces is inserted through a through hole provided in the battery case 21 and is configured to be connected to the main wiring board 51 by soldering. Further, the battery case 21 is integrally formed with a tripod seat portion exposed to the outside of the imaging device and a portion that pivotally supports the battery lid 31. As described above, the battery case 21 is formed of PC (polycarbonate) containing glass fibers because there are many portions that require relatively high strength.

  The battery lid unit 26 (lid member) is rotatably supported (axially supported) on the battery case 21 (main body member) via a rotation shaft, and is configured to be openable and closable with respect to the battery case 21 (FIG. 6). When the battery lid unit 26 is opened (see FIG. 6), the battery and an external memory (recording medium) described later can be attached and detached. The battery lid unit 26 includes a battery lid 31, a slider plate 32 that is a sheet metal for opening and closing, a torsion coil spring 33, a resin inner member 34, a metal battery contact piece 35, and an insulating material that prevents a short circuit due to reverse loading. A guard member 36 and a lock lever 37 are provided (see FIG. 10). Details of the battery lid unit 26 will be described later.

  The strobe unit 41 is a unit that is fixed to the metal chassis 6 with screws 45 from the side, and includes a strobe light emitting unit 42. A strobe wiring board 43 on which a strobe circuit is mounted is fixed to the back side of the strobe light emitting unit 42 of the strobe unit 41 by screwing, and a strobe capacitor 44 is fixed. The strobe unit 41 is disposed above the gear unit 13 assembled to the lens barrel unit 11 and realizes an efficient layout.

  On the main wiring board 51, a CPU, a memory, an image processing LSI, and a power circuit are mounted, and a memory card slot 52 for storing an external memory for storing video and audio, an external power connector 53, and a USB connector 54 are mounted. ing. The main wiring board 51 is screwed to the metal chassis 6 by screws 55a and 55b, and is fixed to the auxiliary metal fitting 65 by screws 55c. The auxiliary metal fitting 65 is positioned with respect to the battery case 21 and fixed with screws.

  A microphone (hereinafter referred to as a microphone) 66 is disposed on the front side of the battery case 21. The microphone 66 is covered with a rubber microphone bush, and is connected to the main wiring board 51 by a lead wire. The microphone bush placed on the microphone 66 is compressed by the front cover 1 and has a function of shielding noise inside the imaging apparatus main body and improving the sound collection efficiency.

  On the upper surface flexible wiring board 61, a release switch, a power switch, a light emitting diode (hereinafter referred to as an LED) for AF auxiliary light, and a dial pattern for mode detection corresponding to the rotation position of the mode dial described later are mounted. An operation wiring board 71 is connected to one end portion of the upper surface flexible wiring board 61 and is electrically connected to the main wiring board 51 through the operation wiring board 71. A strobe wiring board 43 is connected to the other end of the upper surface flexible wiring board 61.

  The top plate 62 is bonded to the upper surface flexible wiring board 61 with a double-sided tape, and is installed for the purpose of improving the strength of the upper surface flexible wiring board 61. The top plate 62 also serves as an electromagnetic shield for the upper surface flexible wiring board 61. The top plate 62 is in contact with a side auxiliary metal fitting 65 and an LCD holder 122 made of metal, which will be described later, and is fixed by screws.

  The speaker 68 is fixed to the speaker holder 69 with a double-sided tape. The lead wire of the speaker 68 is connected to the operation wiring board 71. A donut-shaped elastic body is attached to the front surface of the speaker 68. The elastic body attached to the speaker 68 is pressed against the rear cover 3 to prevent sound leakage from the speaker 68 and improve acoustic performance.

  In the operation wiring board 71, switches and LEDs are mounted on the surface on the back side of the imaging device, and a board-to-board connector is mounted on the surface opposite to the mounting surface. The operation wiring board 71 is electrically connected to the main wiring board 51 via a board-to-board connector. The operation wiring board 71 is configured to be grounded to the attachment fitting 75 and the auxiliary fitting 65 and screwed with screws 76 a and 76 b from above the resin inner member 56. Positioning of the operation wiring board 71 with respect to the main wiring board 51 is determined only by a board-to-board connector, and there is no other thing by positioning holes or positioning axes. This is for preventing double contact and damage to the contact portion of the board-to-board connector.

  The purpose of fixing the operation wiring board 71 to the inner member 56 with the screws 76a and 76b is to fix the operation wiring board 71 positioned by the board-to-board connector only in the optical axis direction of the imaging apparatus. The screws 76a and 76b are tightened with the inner member 56 interposed so as not to give torque at the time of screw tightening to the operation wiring board 71. Thereby, the operation wiring board 71 can be fixed well without applying a load to the board-to-board connector.

  The rear cover 3 is integrally formed with a positioning attachment portion for various operation buttons 82, a hole 3 b serving as an eyepiece window portion of the finder unit 14, and a sound hole 3 c of the speaker 68. One of the various operation buttons 82 arranged on the back side of the imaging device is a light emitting button 82a having a light guide member 83 attached to the center thereof. The light emitting button 82 a is configured such that the tact switch 72 mounted on the operation wiring board 71 can be pressed by the light guide member 83.

  An LED 73 is disposed below the tact switch 72. Light emitted from the LED 73 is guided to the surface of the light emitting button 82 a through the light guide member 83. The other buttons (cross buttons) are hung by resin arms of various operation buttons 82 made of resin, and are configured to be able to press a switch mounted on the operation wiring board 71. The playback button 82b is pressed when displaying an image that has been taken by the imaging apparatus on the display unit. The playback button 82b is pressed when the imaging apparatus is changed from a recording mode (to be described later) to a playback mode.

  For the mode dial 63, still image shooting, moving image shooting, and various scene modes are assigned according to the rotation position. For example, when the imaging apparatus is in the recording mode, the recording mode is set by rotating the mode dial 63. Can be changed. The mode dial 63 is stopped by being urged by a click spring (not shown), and is configured to be rotatable to the next rotation position with a constant torque.

  Further, a contact brush that interlocks with the rotation of the mode dial 63 and a brush holder (not shown) welded to the contact brush are positioned on the mode dial 63 and fixed by screws. As the mode dial 63 is rotated by the operator's operation, the contact brush short-circuits the mode detection dial pattern of the upper surface flexible wiring board 61. As a result, it is possible to determine on the imaging apparatus main body side at which rotational position the mode dial 63 is stopped.

  The front cover 1 holds a zoom lever 102, a release button 103, and a power button 104. When the zoom lever 102, the release button 103, and the power button 104 held by the front cover 1 are operated in a state where the imaging device is assembled, the corresponding electronic components (switches) mounted on the upper surface flexible board 61 are moved. Configured to push.

  The LCD unit 121 is a display unit composed of an LCD panel having two glass components and a backlight unit having LEDs as a light source. A flexible wiring board (FPC) 121a connected to the LCD panel by an ACF (Anisotropic Conductive Film) extends from a substantially central portion of the LCD unit 121 near the main wiring board 51. The extended FPC 121 a passes through a hole (not shown) formed in a part of the LCD holder 122 and is connected to the main wiring board 51. It has been experimentally obtained that extending the FPC 121a from the side of the LCD unit 121 is not easily affected by interference with signals of the imaging system.

  The engagement between the LCD unit 121 and the LCD holder 122 is performed by fitting a claw provided in a protruding state from the LCD unit 121 into a hole of the LCD holder 122. The upper bezel 121b and the LCD holder 122, which are constituent members of the LCD unit 121, are connected to the ground (electrical connection) by the leaf spring portion 122a partially provided on the LCD holder 122 contacting the upper bezel 121b. I'm taking it.

  The LCD holder 122 is made of a relatively strong sheet metal such as SUS, and is formed in a shape that covers the bottom surface and four side surfaces of the LCD unit 121. The standing wall portion configured to cover the four side surfaces of the LCD unit 121 in the LCD holder 122 is formed slightly higher than the thickness of the LCD unit 121. Thereby, the external force applied to the rear cover 3 is transmitted to the LCD holder 122 instead of the LCD unit 121.

  The LCD holder 122 is fixed by being positioned with respect to the metal chassis 6 and fastened by two screws. Most of the back surface of the LCD holder 122 (the surface opposite to the surface facing the LCD unit 121) is grounded (surface contact) with the metal chassis 6. On the other hand, the portion of the back surface of the LCD holder 122 that covers the main wiring board 51 is provided with attachment portions for attaching the battery case 21 to the LCD holder 122 at the upper end portion and the lower end portion. It is in a state. In order to reinforce these strength deficiencies, hemming bending (180 degree bending) is applied to the standing wall portion on the main wiring board 51 side of the LCD holder 122 to improve the strength.

  Next, the opening / closing operation of the battery lid unit 26 constituting the battery lid holding opening / closing mechanism of the imaging apparatus will be described with reference to FIGS. 4, 5, and 6.

  FIG. 4 is a partial perspective view showing a state where the battery lid unit is closed. FIG. 5 is a partial perspective view showing a state in which the battery lid unit is slid. FIG. 6 is a partial perspective view showing a state in which the battery lid unit is opened.

  4, 5, and 6, when the battery lid unit 26 is opened, the operation is performed by the operator and the operation of the battery lid holding opening / closing mechanism in the closed state → manual unlocking → manual slide → automatic rotation → opening. It becomes the order of the state. First, when the operator performs unlocking by performing an operation of moving the lock lever 37 of the battery lid unit 26 in the closed state of FIG. 4 in the direction of arrow A, the battery lid unit 26 is in a slidable state. Become.

  When the operator actually slides the battery lid unit 26 from the closed state of FIG. 4, the battery lid unit 26 is in the state of FIG. FIG. 5 shows a state in which the battery lid unit 26 is slid in the arrow B direction. When the battery cover unit 26 finishes sliding, the battery cover unit 26 rotates in the direction of arrow C around the shaft member 40 (see FIG. 14: described later) from the state of FIG. 5 by the biasing force of the torsion coil spring 33. FIG. 6 shows the open state.

  That is, the battery lid unit 26 is configured to automatically jump from the state shown in FIG. 5 to the state shown in FIG. 6 by a biasing force of a torsion coil spring 33 (described later) by the above-described operation of the operator. In the state of FIG. 6, the battery can be replaced with the battery case 21 and the external memory (recording medium) can be replaced.

  The operation for closing the battery lid unit 26 is the reverse of the operation for opening the battery lid unit 26. The operator rotates the battery lid unit 26 in the state of FIG. In this state, the battery lid unit 26 is pushed with the finger in the direction opposite to the arrow B direction. When the battery lid unit 26 is moved from the state of FIG. 5 to the state of FIG. 4 (closed position), the lock lever 37 is automatically returned from the position of FIG. 5 to the position of FIG. 4 by the urging force of the compression coil spring 38 (see FIG. 10). . As a result, the battery lid unit 26 is restricted from sliding, so that the battery lid unit 26 does not open unless the lock lever 37 is operated.

  Next, the battery lid unit 26 constituting the battery lid holding opening / closing mechanism of the imaging apparatus will be described in detail with reference to FIGS. 7, 8, and 9.

  FIG. 7 is a perspective view of the battery lid unit. FIG. 8 is a top view of the battery lid unit. FIG. 9 is a front view of the battery lid unit.

  7, 8, and 9, each drawing shows a state in which the slider plate 32 is slid in a direction (arrow direction) away from the battery lid 31 of the battery lid unit 26.

  FIG. 10 is an exploded perspective view of the battery lid unit.

  In FIG. 10, the battery lid unit 26 includes a battery lid 31, a slider plate 32, a torsion coil spring 33, an inner member 34, a battery contact piece 35, a guard member 36, and a lock lever 37.

  The battery lid 31 is made of an insulating member made of resin, and includes guide ribs 31a and 31b, a click crest 31c, and a movement restricting boss 31d. In the present embodiment, the battery lid 31 uses PC (polycarbonate) because it receives the load of the battery contact piece 35 when the battery is inserted into the battery case 21 and requires strength. In some cases, glass fibers are added to PC to further improve the strength. The battery lid 31 is configured such that the claw portion can be engaged / released with respect to the imaging apparatus main body.

  The slider plate 32 (lid member) includes a curling portion 32a, a shaft hole portion 32b, an engagement hole 32c, a movement restricting hole 32d, standing wall rail portions 32e and 32f, a click spring portion 32g, a concave portion 32h, and an entry space 32i. Yes. The slider plate 32 is composed of a highly strong sheet metal member having electrical conductivity. In the present embodiment, the slider plate 32 functions as a hinge part when the battery lid unit 26 is opened and closed, and thus is formed of SUS (stainless steel) to increase the rigidity of the battery lid unit 26. In order to further increase the strength of the slider plate 32, it is conceivable to add a heat treatment such as quenching.

  The torsion coil spring 33 includes a coil portion 33a, a first end portion 33b, and a second end portion 33c. Furthermore, the second end portion 33c includes a contact portion 33d, a first portion 33e, and a second portion 33f (see FIG. 15). The torsion coil spring 33 has conductivity, one end engages with the battery case 21, the other end engages with the slider plate 32, and opens the slider plate 32 with respect to the battery case 21. Energize in the direction. The torsion coil spring 33 is formed by forming a piano wire or a SUS wire. FIG. 10 shows both the state in which the torsion coil spring 33 is incorporated in the slider plate 32 and the state before the torsion coil spring 33 is incorporated in the slider plate 32.

  The slider plate 32 is provided with two curling portions 32a. The curling portion 32a of the slider plate 32 is a portion where a shaft hole portion 32b for inserting a shaft member 40 described later is formed. The engagement hole 32 c of the slider plate 32 is a part for inserting and engaging the first end portion 33 b of the torsion coil spring 33.

  The contact portion 33d of the torsion coil spring 33 is formed into a curl shape by bending the tip end portion of the second end portion 33c of the torsion coil spring 33 inward (by bending into a shape having a curvature). . The purpose of providing the contact portion 33d on the torsion coil spring 33 is as follows. The first purpose is to stably establish an electrical connection when the contact portion 33d of the torsion coil spring 33 is brought into contact with the ground metal plate 25. The second purpose is to prevent the assembling worker from being injured by the sharp portion at the tip when the assembling worker is engaged with the engaging portion of the imaging apparatus body while displacing the portion of the torsion coil spring 33. It is to do.

  The lock lever 37 is a member that regulates the sliding movement of the battery lid 31 and the slider plate 32, and includes a shaft portion into which the compression coil spring 38 can be inserted. An operator can operate the lock lever 37 by exposing a part of the lock lever 37 from a hole formed in the battery lid 31. The compression coil spring 38 has a role of always urging the lock lever 37 in a certain direction. At the time of assembly, the compression coil spring 38 is assembled to the lock lever 37, and the lock lever 37 and the compression coil spring 38 are assembled so as to be placed on the battery lid 31.

  The battery contact piece 35 is made of a sheet metal made of a copper alloy having a high conductivity and a wide elastic region. The surface of the battery contact piece 35 is plated for the purpose of preventing rust and improving the conductivity. The guard member 36 is made of a resin member that is an insulator. The boss protruding from the guard member 36 is fitted into the hole of the battery contact piece 35, and the guard member 36 is fixed to the battery contact piece 35 by performing heat caulking, ultrasonic welding, or the like. The guard member 36 is disposed for the purpose of preventing the battery contact piece 35 from contacting the battery when a cylindrical battery such as an AA battery is reversely loaded into the battery case 21.

  The inner member 34 is made of an insulating resin. The inner member 34 is fixed to the battery contact piece 35 by fitting two bosses protruding from the inner member 34 into the holes of the battery contact piece 35 and performing heat caulking, ultrasonic welding, or the like. The inner member 34 functions to isolate and insulate the battery contact piece 35 that is a conductor and the slider plate 32 that is a conductor. As will be described later, when static electricity enters from the gap of the imaging device, the slider plate 32 receives the static electricity and is guided to the ground metal plate 25 of the imaging device body through the torsion coil spring 33. Thereby, static electricity is not applied to the battery contact piece 35.

  Next, a method for incorporating the torsion coil spring 33 into the slider plate 32 in the battery lid unit 26 will be described.

  The first end portion 33 b of the torsion coil spring 33 is inserted into the engagement hole 32 c of the slider plate 32, and the coil portion 33 a of the torsion coil spring 33 is interposed between the two curling portions 32 a of the slider plate 32. insert. Since the gap between adjacent portions of the coil portion 33a and the curling portion 32a is sufficiently small and the first end portion 33b is engaged with the engagement hole 32c, the torsion coil spring 33 is provided with the slider plate 32. It is not easy to fall out of.

  Next, a method for incorporating each component in the battery lid unit 26 will be described.

  First, the compression coil spring 38 is inserted into the shaft portion of the lock lever 37 and placed on the battery lid 31 while the compression coil spring 38 is slightly compressed and charged. The lock lever 37 is provided with a guide portion and a movement restricting portion so that the lock lever 37 can slide with respect to the battery cover 31 in the direction of arrow DE in FIG. Next, the slider plate 32 assembled with the torsion coil spring 33 is placed on the battery lid 31. At this time, the standing wall rail portions 32e and 32f of the slider plate 32 are fitted and guided by the guide ribs 31a and 31b protruding from the battery lid 31, respectively. As a result, the slider plate 32 can slide in the direction of arrow FG in FIG.

  The movement restriction boss 31d of the battery lid 31 is inserted into the movement restriction hole 32d of the slider plate 32, whereby the movement amount of the slider plate 32 in the arrow FG direction with respect to the battery lid 31 is restricted. Further, when the slider plate 32 moves with respect to the battery lid 31, the click spring portion 32g of the slider plate 32 gets over the click peak portion 31c of the battery lid 31, so that the movement has a feeling of moderation (click feeling).

  After the slider plate 32 assembled with the torsion coil spring 33 is placed on the battery lid 31, the inner member 34 incorporating the battery contact piece 35 and the guard member 36 is partially engaged with the battery lid 31. Finally, the screws 39a and 39b are tightened. Thereby, the battery lid unit 26 is completed. The completed state is shown in FIG. 7, FIG. 8, and FIG. At this point, the torsion coil spring 33 is sandwiched between the slider plate 32 and the inner member 34, and the first end portion 33b of the torsion coil spring 33 is engaged with the engagement hole 32c of the slider plate 32. Therefore, it will not fall out.

  Next, the mechanism of the lock lever 37 and the slider plate 32 in the battery lid unit 26 will be described.

  As described above, the movement of the slider plate 32 relative to the battery cover 31 is restricted by the lock lever 37. When the battery cover 31 is closed with respect to the imaging apparatus main body, the lock lever 37 is in the position moved in the direction of arrow E in FIG. 10, and at this time, the slider plate 32 is in the position moved in the direction of arrow G (this State is the initial position). In this state, the convex portion 37a of the lock lever 37 is accommodated in the concave portion 32h of the slider plate 32, and the slider plate 32 cannot move in the arrow F direction.

  When the operator slides the lock lever 37 in the arrow D direction, the convex portion 37a of the lock lever 37 is disengaged from the concave portion 32h of the slider plate 32, so that the slider plate 32 can move in the arrow F direction. The movement of the slider plate 32 is performed by the operator pressing (sliding) the battery lid 31 with a finger. When the operator moves the slider plate 32 in the direction of the arrow F and the convex portion 37a of the lock lever 37 is once removed from the concave portion 32h of the slider plate 32, the convex portion 37a of the lock lever 37 enters the entry space 32i of the slider plate 32. Get in.

  Accordingly, the lock lever 37 cannot move in the arrow E direction although it is biased in the arrow E direction by the compression coil spring 38. If the battery lid 31 is pulled out in the direction of arrow G by the operator, the engagement between the imaging device main body and the claw portion of the battery lid 31 is released, and the battery lid 31 rotates by the action of the torsion coil spring 33. It is configured to start (see FIG. 6).

  When closing the battery cover 31 with respect to the image pickup apparatus main body, the operation is the reverse of the above-described operation of opening the battery cover 31 with respect to the image pickup apparatus main body. When the battery cover 31 is completely closed with respect to the imaging apparatus main body, the convex portion 37a of the lock lever 37 enters the concave portion 32h of the slider plate 32 again, and the movement of the slider plate 32 in the direction of the arrow FG is restricted, and the movement is impossible. It becomes.

  When the battery lid unit 26 is incorporated into the imaging apparatus main body, the slider plate 32 is pulled out in the direction of arrow F in FIG. 10 (see FIGS. 7, 8, and 9). 9 indicates a state in which the slider plate 32 is pushed into the battery lid 31. If this state (the slider plate is not in a solid line state), the second end portion 33 c of the torsion coil spring 33 may come into contact with the battery lid 31. In that case, when the battery lid unit 26 is assembled to the imaging apparatus main body, the coil portion 33a of the torsion coil spring 33 is displaced from the center, and it is difficult to insert the shaft member 40 into the shaft hole portion 32b of the slider plate 32.

  Next, the attachment state of the torsion coil spring 33 in the battery lid unit 26 will be described with reference to FIGS. 11, 12, and 13.

  FIG. 11 is a partial front view of the battery case. FIG. 12 is a partial top view of the battery case. FIG. 13 is a partial perspective view of the battery case.

  11, 12, and 13, in order to make it easy to understand the state of the torsion coil spring 33, the battery case 21, the slider plate 32, and the torsion coil spring 33, which are the main structures of the imaging device main body, are limited. It is shown. The battery case 21 is made of a resin member and includes shaft insertion portions 21c and 21d for holding a shaft member 40 described later, a shaft insertion hole 21b for inserting the shaft member 40, and a second end portion 33c of the torsion coil spring 33. Engaging spring hook portions 21a (engaging portions) are integrally formed. In addition, the surface covered with the front cover 1 is open | released, in order to make an assembly operation (spring application work) easy for the spring application part 21a of the battery case 21.

  The two curling portions 32a of the slider plate 32 are inserted between the shaft insertion portions 21c and 21d of the battery case 21, and are guided by these insertion portions. Thereby, the battery lid unit 26 is smoothly rotated. Further, the first end 33 b of the torsion coil spring 33 is engaged with the engagement hole 32 c of the slider plate 32. The second end portion 33 c of the torsion coil spring 33 is displaced in the direction of the two-dot chain line in FIG. 11 after the shaft member 40 (see FIG. 14) is inserted into the shaft hole portion 32 b of the slider plate 32. Engage with the spring hook 21a.

  The contact portion 33d of the torsion coil spring 33 is provided at the tip of the second portion 33f of the torsion coil spring 33 (see FIG. 15) and is engaged with the spring hook portion 21a of the battery case 21. It has become. The contact portion 33d of the torsion coil spring 33 is configured to be electrically connected by pressing a ground sheet metal 25 incorporated later.

  The ground metal plate 25 is composed of a thin metal plate having conductivity, and is electrically connected to the main wiring board 51 via a metal chassis 6 that is a mechanical ground member. The ground metal plate 25 will be described later. The contact force between the ground metal plate 25 and the torsion coil spring 33 varies depending on the charge amount of the second end portion 33c of the torsion coil spring 33 to the ground metal plate 25, the wire diameter of the torsion coil spring 33, and the L dimension. Is easy. The L dimension is a distance from the spring hook portion 21 a of the battery case 21 to the contact portion 33 d of the torsion coil spring 33.

  As described with reference to FIG. 6, the battery lid unit 26 automatically rotates and jumps up by the urging force of the torsion coil spring 33. The urging force for rotating the battery lid unit 26 and the contact force of the torsion coil spring 33 with respect to the ground metal plate 25 can be set separately. Therefore, the contact force between the torsion coil spring 33 and the ground metal plate 25 can be properly maintained.

  Thereby, the slider plate 32, the shaft member 40, and the torsion coil spring 33 made of metal can be electrically connected to the metal chassis 6 that is a mechanical ground member, and are electrically floating (connected to the ground). No) Metal parts can be eliminated. As a result, a battery lid holding opening and closing mechanism that is resistant to static electricity is obtained.

  Next, attachment of the battery lid unit 26 and the imaging apparatus main body in the imaging apparatus according to the present embodiment will be described with reference to FIGS. 1 and 14.

  FIG. 1 is a partially developed perspective view showing a state before the battery lid unit of the imaging apparatus according to the present embodiment is attached to the apparatus main body. FIG. 14 is a partial perspective view showing a state in which the battery lid unit is attached to the imaging apparatus main body.

  1 and 14, the battery case 21 is firmly fastened to the metal chassis 6 with screws 22a and 22b as described above. The battery case 21 and the metal chassis 6 are the main structures of the imaging device main body. A method for incorporating the battery lid unit 26 into the battery case 21 will be described. First, the curling portions 32 a and 32 a of the slider plate 32, which is a constituent member of the battery lid unit 26, are inserted between the shaft insertion portions 21 c and 21 d of the battery case 21. At this time, the torsion coil spring 33 is not displaced at all so as to generate an urging force.

  In the inserted state, the shaft insertion hole 21b of the battery case 21, the shaft hole part 32b of the slider plate 32, and the center of the inner diameter part of the coil part 33a of the torsion coil spring 33 are substantially coincident with each other. The metal shaft member 40 is inserted into the member insertion location. Since the centers of the shaft member insertion locations substantially coincide with each other, the assembly process related to the insertion of the shaft member 40 is very simple and requires no labor. In FIG. 14, the state which inserted the shaft member 40 in the shaft member insertion location is shown.

  Finally, the second end portion 33c of the torsion coil spring 33 is displaced in the direction of the arrow indicated by the two-dot chain line in FIG. 14 and engaged with the spring hooking portion 21a of the battery case 21, thereby torsion coil spring. The attachment of 33 is completed. Note that the shaft member 40 inserted into the shaft member insertion portion is covered with the front cover 1 and the rear cover 3 to be assembled later with respect to the battery lid unit 26, and thus cannot be removed.

  Next, the second end portion 33c of the torsion coil spring 33 of the battery lid unit 26 will be described in detail with reference to FIG.

  FIG. 15 shows a torsion coil spring.

  In FIG. 15, the torsion coil spring 33 includes the coil portion 33a, the first end portion 33b, and the second end portion 33c as described above. Further, the second end portion 33c includes a contact portion 33d bent to have a curvature, a first portion 33e, and a second portion 33f. In the drawing, the center of the coil portion 33 a of the torsion coil spring 33, that is, the axial direction of the rotation shaft is indicated by a one-dot chain line, which coincides with the axial center of the shaft member 40.

  The first portion 33e of the torsion coil spring 33 extends in the direction perpendicular to the center of the coil portion 33a, that is, the axial direction of the rotation axis of the slider plate 32. Further, the second portion 33f of the torsion coil spring 33 is bent from the end of the first portion 33e toward the front cover 1 to be assembled later. The contact portion 33d of the torsion coil spring 33 is formed at the end of the second portion 33f.

  As described above, the reason why the second end portion 33c of the torsion coil spring 33 is constituted by the first portion 33e, the second portion 33f, and the contact portion 33d is as follows. This is because the shape of the charged state when pressed is a space-saving shape.

  The reason why the contact portion 33d of the torsion coil spring 33 is bent with a curvature is that sliding resistance is set so that the contact portion 33d is smoothly displaced when the torsion coil spring 33 is charged from the direction of the arrow H. This is to suppress.

  The reason why the tip of the contact portion 33d of the torsion coil spring 33 is rounded is that the second end portion 33c of the torsion coil spring 33 is heard at the time of assembly as described with reference to FIG. This is to prevent injury when the operator touches when joining.

  The torsion coil spring 33 is configured to have the following two urging forces. The first biasing force of the torsion coil spring 33 is a biasing force that rotates the battery cover 31 about the rotation axis in the opening direction. The second biasing force of the torsion coil spring 33 is a biasing force that returns when the contact portion 33d of the second end portion 33c of the torsion coil spring 33 is pressed from the direction of the arrow H.

  In the present embodiment, the direction of the second urging force is different from that of the first urging force. The second urging force is configured to generate the urging force in the same direction (or substantially the same direction) as the axial direction of the rotation center axis of the battery lid 31 (slider plate 32) related to the first urging force. Yes. In the present embodiment, the urging directions and urging forces of the first urging force and the second urging force can be set separately. Thereby, the contact force of the torsion coil spring 33 with respect to the front cover 1 to be described later can be made constant and stable irrespective of the open / close state of the battery cover 31.

  Next, the ground metal plate 25 which is a conductive member attached to the front cover 1 of the imaging apparatus will be described with reference to FIG.

  FIG. 16 is a perspective view when the front cover unit is viewed from the inside of the imaging apparatus main body.

  In FIG. 16, the ground metal plate 25 is configured as a thin metal plate having conductivity, and includes a contact portion 25a and a protruding portion 25b. The ground metal plate 25 is positioned and fixed with respect to the front cover 1. The ground metal plate 25 is elastically in contact with the decorative ring 2 that has been subjected to a surface treatment having conductivity such as plating through a contact portion 25a. Further, the ground metal plate 25 is stably electrically connected by being fixed with an exterior screw in a state where the protruding portion 25b is in contact with the metal chassis 6 to be assembled later. As will be described in detail later, the contact portion 33d of the second end portion 33c of the torsion coil spring 33 comes into contact with the ground metal plate 25 and is electrically connected.

  Next, a state where the torsion coil spring 33 of the battery lid unit 26 is in contact with the ground metal plate 25 will be described with reference to FIGS. 17 and 18.

  FIG. 17 is a partial front view of the imaging apparatus main body. 18 is a cross-sectional view taken along the line JJ in FIG.

  17 and 18, only members related to the present invention are shown in FIG. 17, and in FIG. 18, the rotation axis of the slider plate 32 is indicated by a one-dot chain line. Further, regarding the second end portion 33c of the torsion coil spring 33, a free state before the front cover 1 is assembled and a charge state after the front cover 1 is assembled are indicated by broken lines. When the front cover 1 is assembled, the second end portion 33 c of the torsion coil spring 33 is charged (displaced) in the direction of the arrow K which is substantially the same as the axial direction of the rotating shaft of the slider plate 32.

  The torsion coil spring 33 presses the contact portion 33d of the second end portion 33c of the torsion coil spring 33 from the direction of the arrow B in FIG. A biasing force that sometimes returns) occurs. As a result, the torsion coil spring 33 stably contacts and is electrically connected to the ground metal plate 25.

  As will be described repeatedly, the second urging force of the torsion coil spring 33 is the first urging force in the direction of the slider plate 32 (the urging force that rotates the battery lid 31 about the rotation axis in the opening direction). ) And is directed in a direction different from the rotational direction. Furthermore, the second urging force is in the same direction (or substantially the same direction) as the axial direction of the rotation shaft of the slider plate 32 as described above. That is, the direction in which the torsion coil spring 33 presses the ground metal plate 25 by the contact portion 33 d is different from the charge direction in which the torsion coil spring 33 obtains an urging force acting on the slider plate 32.

  With the above-described configuration, the torsion coil spring 33 can have the urging force of the torsion coil spring 33 in a direction different from the rotation direction and the rotation direction of the battery lid 31. Therefore, it is possible to set the contact force of the torsion coil spring 33 with respect to the conductive ground sheet metal 25 provided on the front cover 1 separately from the turning force (biasing force) of the battery lid 31. As a result, it is possible to provide an imaging apparatus that constantly stabilizes the contact force of the torsion coil spring 33 with respect to the ground metal plate 25 and is less susceptible to external noise such as static electricity.

  As described above, according to the present embodiment, the following configurations, operations, and effects are achieved. When the battery lid 31 and the torsion coil spring 33 are incorporated into the image pickup apparatus main body, and when the shaft member 40 is inserted into the shaft member insertion portion of the battery case 21, the slider plate 32, and the torsion coil spring 33, the torsion coil spring. 33 is configured not to generate an urging force. As a result, the center of the inner diameter portion of the shaft insertion hole 21b of the battery case 21, the shaft hole portion 32b of the slurder plate 32, and the coil portion 33a of the torsion coil spring 33 can be easily aligned. The shaft member 40 can be inserted without difficulty.

  Further, when the second end portion 33c of the torsion coil spring 33 is engaged with the spring hook portion 21a of the battery case 21, the surface covered with the front cover 1 of the spring hook portion 21a is opened, so that the assembly worker However, it is possible to perform the springing operation without requiring labor. Thereafter, the open portion of the spring hook portion 21a of the battery case 21 is covered with the front cover 1 so that the second end portion 33c of the coil spring 33 is reliably engaged with the spring hook portion 21a. It becomes possible to prevent the coil spring 33 from falling off. As a result, the battery lid 31 and the torsion coil spring 33 are pivotally supported by the shaft member 40 with respect to the imaging apparatus main body.

  Further, the direction in which the contact portion 33 d of the torsion coil spring 33 presses the ground metal plate 25 attached to the front cover 1 is different from the charge direction in which the torsion coil spring 33 obtains an urging force acting on the battery lid 31. It is configured to make it. Therefore, it is possible to set the contact force with respect to the ground metal plate 25 separately from the rotational force (biasing force) with respect to the battery lid 31 in the torsion coil spring 33. Thereby, the contact force with respect to the ground metal plate 25 is always stabilized, and it becomes possible to make it less susceptible to external noise such as static electricity.

  Further, since the contact portion 33d at the tip of the second portion 33f connected to the end of the first portion 33e of the torsion coil spring 33 is bent into a shape having a curvature, when the operator touches the contact portion 33d, This makes it possible to improve the assembly workability. Further, in the structure in which the ground metal plate 25 is pressed by the contact portion 33d of the torsion coil spring 33, it becomes possible to maintain a stable contact pressure in a space-saving manner, and a stable electrical connection between the torsion coil spring 33 and the ground metal plate 25 can be achieved. Connection is possible.

  In summary, the torsion coil spring 33 can be simply assembled without using a tool or the like when the torsion coil spring 33 is assembled, and the pressing force (contact force) of the torsion coil spring 33 against the ground metal plate 25 is stabilized. It is possible to provide an imaging device having a structure resistant to electrostatic noise.

[Other Embodiments]
In the above embodiment, the battery lid opening / closing mechanism of the imaging apparatus (camera) is taken as an example, but the present invention is not limited to this. The present invention can be applied to a video camera including a lid member that can be opened and closed with respect to a device main body and various electronic devices.

It is a partial expansion perspective view which shows the state before attaching the battery cover unit of the imaging device which concerns on embodiment of this invention to an apparatus main body. It is a disassembled perspective view at the time of seeing the component of an imaging device from the front side. It is a disassembled perspective view at the time of seeing the component of an imaging device from the back side. It is a fragmentary perspective view which shows the state which closed the battery cover unit. It is a fragmentary perspective view which shows the state which made the battery cover unit slide. It is a fragmentary perspective view which shows the state which opened the battery cover unit. It is a perspective view of a battery cover unit. It is a top view of a battery cover unit. It is a front view of a battery cover unit. It is a disassembled perspective view of a battery cover unit. It is a partial front view of a battery case. It is a partial top view of a battery case. It is a fragmentary perspective view of a battery case. It is a fragmentary perspective view which shows the state which attached the battery cover unit to the imaging device main body. It is a figure which shows a torsion coil spring. It is a perspective view at the time of seeing a front cover unit from the inside of an imaging device main body. It is a partial front view of an imaging device main body. It is sectional drawing which follows the arrow JJ line | wire of FIG. It is a perspective view which shows the state which closed the battery cover of the imaging device which concerns on a prior art example. It is a perspective view which shows the state which opened the battery cover of the imaging device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front cover 21 Battery case 21a Spring hook part 21b Shaft insertion hole 21c, 21d Shaft insertion part 25 Ground metal plate 25a Contact part 25b Protrusion part 26 Battery cover unit 31 Battery cover 32 Slider plate 32a Curling part 32b Shaft hole part 32c Engagement hole 32d Movement restriction hole 32e, 32f Standing wall rail part 32g Click spring part 32h Recess 32i Enter space 33 Torsion coil spring 33a Coil part 33b First end part 33c Second end part 33d Contact part 33e First part 33f First part 33f Part 2

Claims (6)

In an electronic device including a storage unit configured by a main body member and a cover member that covers an open portion of the main body member,
A lid member having electrical conductivity, supported rotatably on the main body member via a rotation shaft, and capable of opening and closing the storage unit;
A conductive member having electrical conductivity and attached to the cover member;
A biasing member that is electrically conductive and has one end engaged with the main body member and the other end engaged with the lid member, and biases the lid member in the opening direction with respect to the storage portion. A member, and
A contact portion that is electrically connected by pressing the conductive member is formed at the one end of the biasing member,
An electronic apparatus, wherein a direction in which the contact portion of the urging member presses the conductive member is different from a charge direction in which the urging member obtains an urging force acting on the lid member.   The electronic apparatus according to claim 1, wherein a direction in which the contact portion of the biasing member presses the conductive member is a direction that is equal to an axial direction of the rotation shaft of the lid member. The main body member is formed with an engaging portion with which the one end of the biasing member is engaged,
The electronic device according to claim 1, wherein the engaging portion of the main body member is open on a side covered with the cover member. A first portion that extends in a direction orthogonal to the axial direction of the pivot shaft of the lid member on the one end portion of the biasing member, and an end of the first portion that extends from the end of the first portion to the cover member And a second portion that is bent toward the
The electronic device according to claim 1, wherein the contact portion of the biasing member is formed at an end of the second portion.   The electronic device according to claim 4, wherein the contact portion of the biasing member is bent into a shape having a curvature.   The electronic device according to claim 1, wherein the electronic device includes an imaging device.

Images