JP6448399B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic apparatus including an imaging device such as a digital camera provided with a connector on which a plug is removably attached.

  In an electronic device such as a digital camera, a connector on which a plug can be inserted and removed is mounted on the printed circuit board, and the printed circuit board is placed inside the electronic device so that the plug insertion port of the connector is exposed from the hole formed in the exterior member. It is known to place.

  In such an electronic device, a force is applied to the connector due to the twist after the plug is inserted, and an excessive load is applied to the soldered portion between the connector and the printed circuit board, and the soldered portion is cracked.

  Therefore, a technique has been proposed in which slits are formed on both sides of the connector mounting portion of the board and the board is bent to prevent cracking of the soldered portion between the connector and the printed board due to the twisting force after the plug is inserted. (Patent Document 1). In addition, a technique has been proposed in which a metal plate having a reinforcing portion is screwed to a substrate and a chassis, and the amount of connector movement is regulated by receiving a twisting force after insertion of the plug by the reinforcing portion (Patent Document 2).

JP 2003-234547 A JP 2011-165345 A

  However, in Patent Document 1, since the slits are formed on both sides of the connector mounting portion of the board, the board mounting area is reduced and the board is enlarged.

  On the other hand, in Patent Document 2, since the board on which the connector is mounted is fixed to the chassis from the back side of the camera body, the back cover, the sheet metal, etc. must be removed when the connector is cracked by solder. The maintenance work is troublesome. In addition, since the connector is mounted on the main board on which the image processing IC, the booster circuit, etc. are mounted, when the connector is damaged, it is necessary to replace the main board together, resulting in high maintenance costs. .

  Accordingly, the present invention can suppress the breakage of the joint between the board and the connector due to the twisting force after inserting the plug, and can easily replace the board even when the board or the connector is broken. An object is to provide an electronic device with excellent performance.

In order to achieve the above object, an electronic device according to the present invention includes a board on which a connector on which a plug is removably mounted is mounted, a holding member that holds the board and is detachably fastened to the chassis. the substrate on which the connector is mounted, the holding member, and provided with a cover for covering openably an opening in which the chassis is exposed, the holding member includes a fixing portion to which the substrate is fixed, the fixed A fastening portion that is arranged orthogonal to the portion and is detachably fastened to the chassis, wherein the fastening portion is fastened in the same direction as the plug insertion / removal direction with respect to the chassis. When a force in a direction substantially perpendicular to the substrate is applied to the plug inserted into the connector, the plug is elastically deformed with a fastening position with respect to the chassis as a fulcrum.

  According to the present invention, it is possible to prevent the joint portion between the board and the connector from being damaged by the twisting force after the plug is inserted, and to perform the maintenance that allows the board to be easily replaced even if the board or the connector is damaged. An electronic device with excellent performance can be provided.

(A) is the perspective view which looked at the camera main body of the digital camera which is an example of embodiment of the electronic device of this invention from the front side (object side), (b) looked at the camera main body shown to (a) from the back side. FIG. It is a right view of a camera body. (A) is a perspective view of the USB connector, HDMI (registered trademark) connector, and LAN connector mounting portion as viewed from the front side of the camera body, and (b) is the USB connector, HDMI connector, and LAN connector mounting portion of the camera body. It is the perspective view seen from the rear surface direction. It is a figure which shows the expansion | deployment shape of a LAN communication board | substrate. It is a perspective view which shows a mode that the holding member to which the interface board and the LAN communication board were attached is assembled | attached to a main body chassis. It is a disassembled perspective view around the side cover of the camera body. It is a perspective view which shows the state which inserted the plug of the USB cable in the USB connector of the camera body. 7A is a cross-sectional perspective view taken along the line AA of FIG. 7 when a twisting force is applied to the front side of the camera body in the z direction with respect to the plug, and FIG. FIG. 8 is a cross-sectional perspective view taken along the line AA in FIG. 7 when a rearward side is subjected to a twisting force. FIG. 9 is a diagram showing a comparison of the magnitude of the force in the pulling-out direction of the USB cable with respect to the inclination angle when the interface board is inclined due to the twisting force of the plug in FIG. 8.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1A is a perspective view of a camera body of a digital camera which is an example of an embodiment of an electronic apparatus according to the present invention as viewed from the front side (subject side), and FIG. 1B is a camera shown in FIG. It is the perspective view which looked at the main body from the back side.

  As shown in FIGS. 1A and 1B, the digital camera according to the present embodiment includes an exterior of the camera body 1 by a front cover 2, an upper cover 3, a side cover 4, a terminal cover 5, and a rear cover 6. Is forming. An interchangeable lens unit (not shown) is detachably mounted on the front side of the camera body 1.

  The front cover 2, the upper cover 3, and the rear cover 6 are detachably screwed to the main body chassis 11 (see FIG. 5). The side cover 4 is detachably screwed to the front cover 2 and the rear cover 6, and the terminal cover 5 is screwed to the side cover 4 so that it can be opened and closed. The terminal cover 5 is formed of an elastic material such as an elastomer, and the terminal cover 5 is opened as shown in FIG.

  FIG. 2 is a right side view of the camera body 1. In FIG. 2, the terminal cover 5 is not shown. As shown in FIG. 2, an opening 41 for terminal installation is formed in a portion of the side cover 4 covered with the terminal cover 5. In the opening 41, one or more connectors, in this embodiment, a microphone plug connector 7, a headphone connector 13, a USB connector 14, an HDMI connector 15, and a LAN connector 16 are arranged. These connectors 13 to 16 are exposed to the outside by opening the side cover 4 or the terminal cover 5 so that plugs can be inserted and removed.

  The microphone plug connector 7 plays a role of adding audio data to moving image data at the time of moving image recording when a plug of a microphone as an external accessory is detachably attached. The headphone connector 13 is attached so that a plug of a headphone cable can be inserted and removed, thereby outputting an audio signal of a captured moving image to external headphones.

  The LAN connector 16 performs wired network communication of photographed image data and the like by attaching a plug of a LAN cable so that it can be inserted and removed. The USB connector 14 is used for communication with a PC or the like having a USB terminal when a USB cable plug is detachably attached. The HDMI connector 15 is connected to a digital TV or the like having an HDMI terminal by attaching an HDMI cable plug so that the plug can be inserted and removed, and transmits a video / audio signal to the digital TV.

  Next, the USB connector 14, the HDMI connector 15, and the LAN connector 16 will be described as an example with reference to FIGS. FIG. 3A is a perspective view of mounting portions of the USB connector 14, the HDMI connector 15, and the LAN connector 16 as viewed from the front side of the camera body 1. FIG. 3B is a perspective view of mounting portions of the USB connector 14, the HDMI connector 15, and the LAN connector 16 as viewed from the rear surface direction of the camera body 1. 3 and 5 to 9, for convenience of explanation, the plug insertion direction of each connector 14, 15, 16 is the x direction, the direction perpendicular to the bottom surface of the camera body 1 is the y direction, and the light of the camera body 1 is lighted. The axial direction is the z direction.

  As shown in FIG. 3A, the USB connector 14 and the HDMI connector 15 are surface-mounted on an interface board 9 made of a material such as FR4 (Flame Retardant Type 4). The interface board 9 is fastened in the z direction by screws 201 and 202 to flat fixing portions 105 and 106 provided on both sides in the y direction of the metallic holding member 10 having conductivity. The screws 201 and 202 electrically connect the ground signal of the interface board 9 to the holding member 10.

  The holding member 10 extends in the y direction from the vicinity of the screw 202 to the vicinity of the LAN connector 16 along the side surface portion 141 of the USB connector 14 and the side surface portion 151 of the HDMI connector 15. An elastic member 12 is provided between the side surface parts 141 and 151 and the holding member 10. The elastic member 12 is a conductive gasket formed by winding a conductive nonwoven fabric around a foamed resin material, and electrically connects the side surface portions 141 and 151 and the holding member 10.

  As shown in FIGS. 3A and 3B, the holding member 10 has two fastening portions 101 and 102 formed by bending both end portions in the y direction in the z direction substantially orthogonal to the y direction. doing. The two fastening portions 101 and 102 are formed in a planar shape and fastened to the main body chassis 11 (see FIG. 5) by screws 211 and 212 in the x direction, that is, the same direction as the plug insertion / removal direction.

  The main body chassis 11 is formed of a metal material or a conductive resin material, and is electrically connected to the connectors 14, 15, and 16 together with the elastic member 12 to enhance ground connection. Further, a harness connector 17 is surface-mounted on the interface board 9, and the harness connector 17 is connected to another board by a wire harness or the like.

  FIG. 4 is a diagram illustrating a developed shape of the LAN communication board 33. As shown in FIG. 4, the LAN communication substrate 33 is a so-called rigid flexible substrate in which rigid substrate portions 331, 332, 333, 334 and flexible substrate portions 335, 336, 337 are integrated. A LAN connector 16 for performing LAN communication with an external device is mounted on the rigid board portion 331. Board-to-board connectors 18 and 19 are surface-mounted on the rigid board portions 333 and 334, respectively.

  When assembling the LAN communication board 33 to the holding member 10, as shown in FIG. 3, the rigid board portion 331 is fastened to the holding member 10 in the z direction by screws 221 and 222, and the rigid board portion 332 is fastened to screws 231 and 232. To fasten the holding member 10 in the x direction.

  FIG. 5 is a perspective view showing a state in which the holding member 10 to which the interface board 9 and the LAN communication board 33 are attached is assembled to the main body chassis 11. As shown in FIG. 5, the holding member 10 to which the interface board 9 and the LAN communication board 33 are attached is fastened to the main body chassis 11 with screws 211 and 212. The board-to-board connectors 18 and 19 of the rigid board portions 333 and 334 are connected to other boards in the same manner as the harness connector 17. Thereby, the USB communication data and the LAN communication data are communicated with the other board via the interface board 9 and the LAN communication board 33, and the operation setting of the camera body 1 and the storage of the photographed image are performed.

  Incidentally, as described above, the plugs of the corresponding cables are removably attached to the USB connector 14, the HDMI connector 15, and the LAN connector 16 mounted on the interface board 9 and the LAN communication board 33 of the camera body 1. . Here, if the user inadvertently applies a z-direction twisting force with the cable plug inserted into the connector, the connector or the board may be damaged, or a soldered portion that is a joint between the connector and the board may be cracked. There is a possibility.

  For example, when a USB cable plug is inserted into the USB connector 14 of the camera body 1 and the cable is caught in the cable, excessive stress is temporarily applied to the USB connector 14 or the interface board 9, and the USB connector 14 is connected to the USB connector 14 from the interface board 9. Will peel off.

  Next, with reference to FIG. 6, the maintenance procedure when the connector or the board is damaged or the soldered portion that is the joint between the connector and the board is cracked will be described. FIG. 6 is an exploded perspective view around the side cover 4 of the camera body 1.

  First, the screws 42 that fasten the side cover 4 to the front cover 2 and the rear cover 6 are removed, and the side cover 4 and the main body chassis 11 are separated. In the opening formed by removing the side cover 4, the interface board 9 on which the connector is mounted, the holding member 10, and the main body chassis 11 are disposed so as to be able to be inserted and removed from the opening.

  Next, the wire harness connecting the interface board 9 and the other board is removed from the harness connector 17 (FIG. 3B), and the board-to-board connectors 18, 19 connecting the LAN communication board 33 and the other board. Remove. The harness connector 17 and the board-to-board connectors 18 and 19 are both connected by press-fitting both connectors, and can be easily detached by using a simple tool such as a fingertip or tweezers.

  Thereafter, the two screws 211 and 212 that fasten the holding member 10 and the main body chassis 11 are removed. As described above, since the interface board 9 and the LAN communication board 33 are attached to the holding member 10, the boards 9 and 33 can be removed from the camera body 1 at the same time by removing the screws 211 and 212. it can. When the holding member 10 is removed from the main body chassis 11, only the holding member 10, the interface board 9, and the LAN communication board 33 are configured as shown in FIG.

  For this reason, when the USB connector 14, the HDMI connector 15, or the interface board 9 is damaged, the screws 201 and 202 may be removed to replace the interface board 9. Further, when the LAN connector 16 or the LAN communication board 33 is damaged, the screws 221, 222, 231, 232 may be removed and the LAN communication board 33 may be replaced. The method for attaching a new board to the camera body 1 when replacing the board is performed in the reverse order of the above procedure.

  As described above, even when the connector or the board is damaged or the soldered portion that is the joint between the connector and the board is cracked, it is necessary to remove the exterior parts other than the side cover 4 and the other board inside the camera body 1. Absent. For this reason, it is possible to perform maintenance by exchanging the substrates by a simple method.

  Next, referring to FIGS. 7 to 9, the behavior of the holding member 10 and the interface board 9 when a z-direction twisting force is applied to the plug with the cable plug inserted into the connector of the camera body 1. explain.

  FIG. 7 is a perspective view showing a state where the plug of the USB cable 8 is inserted into the USB connector 14 of the camera body 1. In the state of FIG. 7, when a twisting force is applied in the z direction to the plug of the USB cable 8, the z direction twisting force acts as a force for peeling the USB connector 14 from the interface board 9 shown in FIG. 3. To do. Here, the z-direction twisting force corresponds to the twisting force in a direction substantially orthogonal to the interface board 9.

  FIG. 8A is a cross-sectional perspective view taken along the line AA of FIG. 7 excluding the side cover 4 when a twisting force is applied to the front side of the camera body 1 in the z direction with respect to the plug of the USB cable 8. is there. As shown in FIG. 8A, when a z-direction twisting force is applied to the front side of the camera body 1 with respect to the plug of the USB cable 8, the twisting force is applied to the elastic member 12 from the side surface portion 141 of the USB connector 14. It acts on the contact part 103 with the elastic member 12 of the holding member 10 via.

  As described above, the holding member 10 has the fastening portion 102, and this fastening portion 102 forms a cantilever-shaped portion 104 having a fastening position between the body chassis 11 and the screw 212 as a fixed end. ing. For this reason, the z-direction twisting force applied to the front side of the camera main body 1 with respect to the plug of the USB cable 8 is transmitted to the cantilever-shaped portion 104 via the contact portion 103, and the main body chassis 11 of the screw 212 is connected. The cantilever beam-shaped portion 104 is elastically deformed with the fastening position as a fulcrum. As a result, the interface board 9 is inclined toward the front side of the camera body 1 in the z direction.

  FIG. 8B is a cross-sectional perspective view taken along line AA of FIG. 7 excluding the side cover 4 when a twisting force is applied to the rear surface side of the camera body 1 in the z direction with respect to the plug of the USB cable 8. is there. In this case as well, the z-direction twisting force acts as a force for peeling the USB connector 14 from the interface board 9 shown in FIG.

  As shown in FIG. 8B, when a z-direction twisting force is applied to the rear surface side of the camera body 1 with respect to the plug of the USB cable 8, the twisting force is applied to the elastic member 12 from the side surface portion 141 of the USB connector 14. It acts on the contact part 103 with the elastic member 12 of the holding member 10 via. In the same manner as described above, the z-direction twisting force acting on the contact portion 103 is transmitted to the cantilever-shaped portion 104, and the cantilever-shaped portion 104 uses the fastening position of the screw 212 with the main body chassis 11 as a fulcrum. Elastically deforms. As a result, the interface board 9 is inclined to the rear side of the camera body 1 in the z direction.

  The main body chassis 11 is provided with a stopper portion 110. When the holding member 10 is elastically deformed by a certain amount, the contact portion 103 of the holding member 10 contacts the stopper portion 110. Thereby, the holding member 10 is prevented from being plastically deformed.

  FIG. 9 is a diagram showing a comparison of the magnitude of the force in the pulling-out direction of the USB cable 8 with respect to the inclination angle when the interface board 9 is inclined due to the twisting force of the plug in FIG. As shown in FIG. 9, the inclination angle of the interface board 9 increases in accordance with the vector α of the twisting force. However, as the inclination from the initial state increases, the force vector γ in the disconnecting direction of the USB cable 8 increases.

  As the twisting force applied to the USB connector 14 increases, the ratio of the removal direction vector γ to the peeling force vector β applied to the joint between the USB connector 14 and the interface board 9 increases. As a result, the USB cable 8 can be easily pulled out, and it is possible to suppress breakage of a soldered portion, which is a joint portion between the USB connector 14 and the interface board 9, and consequently breakage of the USB connector 14 and the interface board 9.

  Similarly, when the plug is inserted into the HDMI connector 15 and a twisting force is applied to the plug, the holding member 10 is elastically deformed so that the HDMI cable is easily disconnected. As a result, it is possible to suppress breakage of the soldered portion, which is a joint between the HDMI connector 15 and the interface board 9, and consequently breakage of the HDMI connector 15 and the interface board 9.

  As described above, in the present embodiment, it is possible to suppress damage to the soldered portion, which is the joint portion between the substrate 9 and the connectors 14 and 15, due to the twisting force after the plug is inserted. In addition, even if the board 9 or the connectors 14 and 15 are damaged, it is possible to provide a camera with excellent maintainability that can easily replace the board.

  The configuration of the present invention is not limited to that exemplified in the above embodiment, and the material, shape, dimensions, form, number, arrangement location, and the like can be changed as appropriate without departing from the scope of the present invention. It is.

DESCRIPTION OF SYMBOLS 1 Camera main body 4 Side cover 5 Terminal cover 8 USB cable 9 Interface board 10 Holding member 11 Main body chassis 14 USB connector 15 HDMI connector 16 LAN connectors 101, 102 Fastening part 105, 106 Fixing part

Claims (4)

A board on which a connector on which a plug is removably mounted is mounted;
A holding member that holds the substrate and is detachably fastened to the chassis;
With the substrate on which the connector is mounted, the holding member, and a cover covering openably an opening for the chassis exposed,
The holding member includes a fixing portion to which the substrate is fixed, and a fastening portion that is arranged orthogonal to the fixing portion and is detachably fastened to the chassis.
The fastening portion is fastened in the same direction as the plug insertion / extraction direction with respect to the chassis,
An electronic apparatus characterized in that when a force in a direction substantially orthogonal to the substrate is applied to the plug inserted into the connector, the plug is elastically deformed with a fastening position with respect to the chassis as a fulcrum.   The electronic device according to claim 1, wherein the fastening portion is fastened to the chassis with a screw.   The electronic device according to claim 1, wherein the fastening portion is formed in a cantilever shape with respect to the fixed portion.   4. The electronic device according to claim 1, wherein the connector, the holding member, and the chassis are formed of a conductive material and are grounded to the substrate. 5. machine.

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