JP2013080815A - Substrate support structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a substrate support structure which can prevent breakage of a substrate due to a load imposed when attaching or detaching an external device.SOLUTION: A substrate support structure comprises: a connector 15 for holding an external device 100 provided on a mounting surface of a circuit board 20; and a screw 31, a boss 32 and a foam material spacer 34 for supporting the circuit board 20 with keeping one end (movable end) in a plane direction in a swingable state in a thickness direction, at another end (fixed end). The screw 31 can be screwed in the boss 32. The boss 32 is inserted in a through hole 22 provided on the circuit board 20 and having a diameter larger than that of the boss 32. The screw 31 ia screwed in the boss 32 until the screw 31 contacts the mounting surface, and the circuit board 20 is sandwiched in the thickness direction and fixed by the screw 31 and the foam material spacer 34 provided on a rear face of the circuit board 20.

Description

  The present invention relates to a substrate support structure having a connector for mounting an external device.

  In recent years, an increasing number of users listen to music on mobile devices. Accordingly, an increasing number of audio devices have a connector for connecting a portable device and can output music data stored in the portable device. In such an audio device, for example, as described in Patent Document 1, since the connector is inclined and provided, it may be necessary to attach and detach the portable device with respect to the horizontal direction.

JP 2009-110645 A

  Since the connector is mounted on the circuit board with solder or the like, the force applied when the portable device is inserted into the connector may cause the solder between the connector and the circuit board to peel off, resulting in poor contact. This problem becomes prominent when the portable device is attached and detached while being tilted as described in Patent Document 1.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a substrate support structure that can prevent the substrate from being damaged by a load applied when an external device is attached or detached.

  A substrate support structure according to the present invention includes a substrate, a support portion that supports the substrate, and a connector portion that protrudes in the thickness direction of the substrate and is provided on one surface of the substrate and mounts an external device. The support part has a rigid body and an elastic body, sandwiches the board in the thickness direction with the rigid body and the elastic body, and supports the connector part mounted on the board so as to be swingable in the thickness direction. Features.

  In this configuration, since the connector part for mounting the external device is provided on a part of the swingable board, the load applied to the board via the connector part when the external device is attached / detached is caused by the swing of the board. It is reduced. As a result, it is possible to prevent the substrate from being damaged when the external device is attached or detached.

  Further, in this configuration, since the substrate is sandwiched and supported by the rigid body and the elastic body, the substrate can be stabilized while allowing a part of the substrate to swing. For example, when the front surface side of the substrate is a rigid body and the back surface side is an elastic body, when the substrate swings to the back surface side, the load applied between the back surface of the substrate and the support portion can be reduced by the elastic body, The wobbling of the substrate that is swung by the rigid body can be suppressed. As a result, the possibility of damage to the board portion can be reduced as in the case where the board is fixedly supported by the support section, while the board is stabilized by pinching and fixing between the rigid body and the elastic body, so that an external device is attached to the connector section. It becomes easy.

  In the substrate support structure according to the present invention, the substrate has a hole penetrating in the thickness direction, the rigid body has a smaller diameter than the hole, a column part inserted into the hole, and a larger diameter than the hole, It has an engaging part engaged with the said pillar part, The said board | substrate is inserted | pinched and supported by the said engaging part and the said elastic body, It is characterized by the above-mentioned.

  In this configuration, since the hole of the substrate into which the column part is inserted has a larger diameter than the column part, a gap is generated between the substrate and the column part. For this reason, the substrate can be swung by the difference between the hole of the substrate and the diameter of the column portion.

  The board | substrate support structure which concerns on this invention WHEREIN: The said connector part is provided so that the protrusion direction from the said board | substrate may incline with respect to the normal line direction of the one surface of the said board | substrate.

  In this configuration, even when an external device is attached to and detached from the connector part with a deviation from the protruding direction of the connector part, the load applied between the board and the connector part can be absorbed by the swinging of the board. Damage to the part can be prevented.

  The substrate support structure according to the present invention further includes a prevention unit that prevents the one end portion of the substrate from swinging a predetermined angle or more.

  In this configuration, the substrate can be prevented from being damaged by swinging beyond the movable range.

  In the substrate support structure according to the present invention, the support portion supports the substrate at at least two points.

  In this configuration, the swinging substrate can be stabilized with a small number of fulcrums.

  According to the present invention, by providing the connector portion to which the external device is mounted on a part of the swingable substrate, it is possible to reduce the load applied to the substrate through the connector portion when attaching and detaching. It is possible to prevent the substrate from being damaged during attachment / detachment.

The perspective view of the audio apparatus which concerns on embodiment. Explanatory drawing of the connector with which a circuit board is mounted | worn. The figure which shows the circuit board at the time of seeing from the upper direction of an audio apparatus. 3A is a cross-sectional view taken along line IVA-IVA in FIG. 3, FIG. 3B is a cross-sectional view taken along line IVB-IVB in FIG. 3, and FIG. 4C is a cross-sectional view taken along line IVC-IVC in FIG. The schematic diagram which shows the motion of the circuit board at the time of inserting an external device in a connector. The schematic diagram which shows the motion of the circuit board at the time of extracting an external device from a connector. The circuit board at the time of seeing an audio apparatus from the downward direction is shown. 7A is a cross-sectional view taken along line VIIA-VIIA in FIG. 7, FIG. 7B is a cross-sectional view taken along line VIIB-VIIB in FIG. 7, and FIG. 8C is a cross-sectional view taken along line VIIC-VIIC in FIG.

(Embodiment 1)
Hereinafter, a substrate support structure according to a first embodiment of the present invention will be described with reference to the drawings. In the following embodiments, an audio apparatus provided with a substrate support structure according to the present invention will be described as an example.

  FIG. 1 is a perspective view of an audio apparatus according to this embodiment.

  The audio apparatus 1 includes a housing 10 having a substantially rectangular parallelepiped shape and a corner portion having an R shape. A speaker 9 and a dial 8 for adjusting the volume and the like are provided on one surface of the housing 10 (hereinafter, this surface is referred to as a front surface). Although not shown, a connector for connecting a power cable or the like is provided on the rear surface of the housing 10.

  On the upper surface of the housing 10, an operation panel 7 such as a power button and a mounting portion 14 for mounting the external device 100 are provided. The mounting portion 14 is a space having an opening on the upper surface of the housing 10, and a connector 15 for connecting the external device 100 is provided inside. The external device 100 is a device having a memory for storing sound data, and examples thereof include a portable music player, a PDA (Personal Digital Assistant), and a mobile phone. When the external device 100 is attached to the connector 15 and a reproduction start operation is accepted, the audio device 1 acquires sound data stored in the external device 100 and emits sound from the speaker 9.

  FIG. 2 is an explanatory diagram of the connector 15 attached to the circuit board.

  The connector 15 is provided on the mounting surface of the circuit board 20 disposed inside the housing 10 below the mounting portion 14 and is exposed from the bottom surface of the mounting portion 14 so that the external device 100 can be mounted. Yes. The circuit board 20 has the other end (hereinafter referred to as a fixed side end) so that one end (hereinafter referred to as a movable side end) in the depth direction of the substrate plane swings in the thickness direction of the substrate (broken arrow in the figure). In the vicinity, the head of the screw 31 inserted into the boss 32 and the foam material spacer 34 are sandwiched and supported. The screw 31, the boss 32, the foam material spacer 34, etc. will be described in detail later. The connector 15 is mounted at a position on the movable side end side from the position where the circuit board 20 is supported by screws 31 or the like. The connector 15 is provided on the circuit board 20 in a state where the connector 15 is inclined about 15 degrees from the normal direction n of the mounting surface of the circuit board 20. In the present embodiment, the circuit board 20 is assumed to be horizontally arranged when the audio device 1 is horizontally installed. Therefore, the external device 100 connected to the connector 15 is attached to the connector 15 in a state inclined about 15 degrees from the vertical direction.

  FIG. 3 is a diagram illustrating the circuit board 20 when viewed from above the audio device 1. 4A is a cross-sectional view taken along line IVA-IVA in FIG. 3, FIG. 4B is a cross-sectional view taken along line IVB-IVB in FIG. 3, and FIG. 4C is a cross-sectional view taken along line IVC-IVC in FIG. Indicates. 4A and 4B, the housing 10 is omitted.

  The circuit board 20 has a substantially rectangular shape including long sides and short sides, and is supported at a certain distance from a part of the housing 10 forming the mounting portion 14. Hereinafter, the direction along the long side of the circuit board 20 is defined as the width direction of the circuit board 20, and the direction along the short side is defined as the depth direction of the circuit board 20. One end of the circuit board 20 in the depth direction is the above-described movable side end, and the other end is the fixed side end. The circuit board 20 has a recessed portion 20A formed at the fixed side end. The recess 20A is provided with a connector (not shown) having a flexible cable, for example, and is connected to another circuit board in the audio apparatus 1 or the like.

  Two through holes 22 and two through holes 23 are formed in the circuit board 20. The two through holes 22 are formed in the vicinity of the two corners on the fixed side end portion side, and the center is located on a straight line along the width direction of the circuit board 20. The two through holes 23 are formed in the vicinity of the two corners on the movable side end portion side, and the center is located on a straight line along the width direction of the circuit board 20. Further, the through holes 22 and 23 are located on a straight line whose center is along the depth direction of the circuit board 20.

  The through holes 22 and 23 have the same diameter, and have a diameter slightly larger than the diameter of cylindrical bosses 32 and 33 to be described later. The diameters of the through holes 22 and 23 are set in consideration of the swing range in which the circuit board 20 is not damaged when the movable side end of the circuit board 20 swings up and down, and the diameters of the bosses 32 and 33. . More specifically, when the movable side end of the circuit board 20 swings up and down, the through holes 22 and 23 are inclined at the center axis with respect to the axial direction of the bosses 32 and 33. At this time, a space is provided around the bosses 32 and 33, and the diameters of the through holes 22 and 23 are set so that the inner wall surfaces of the through holes 22 and 23 do not contact the bosses 32 and 33.

  A rigid support plate 30 that supports the circuit board 20 is provided below the circuit board 20. The support plate 30 may be a part of the housing 10 or may be a member different from the housing 10. Bosses 32 and 33 are integrally formed on the support plate 30 at positions corresponding to the through holes 22 and 23 of the circuit board 20 to be supported. The bosses 32 and 33 have an internal hollow cylindrical shape, and the hollow portion of the boss 32 is a screw hole of the screw 31. The boss 32 is inserted into the through hole 22 from the back side of the circuit board 20. The boss 33 is inserted into the through hole 23 from the back side of the circuit board 20.

  A screw 31 is inserted into the boss 32 inserted into the through hole 22. The screw 31 has a head portion larger than the diameter of the through hole 22 and a shaft portion that can be screwed into the hollow portion of the boss 32. The shaft portion of the screw 31 is screwed into the boss 32 so that the head portion comes into contact with the mounting surface of the circuit board 20. In addition, a cylindrical foam spacer (elastic body) 34 is provided around the boss 32 so as to be in contact with the back surface of the circuit board 20. The foam material spacer 34 is made of, for example, chloroprene rubber foam. The circuit board 20 is sandwiched and fixed between the foam spacer 34 and the head of the screw 31 screwed into the boss 32. The foam spacer 34 is also provided around the boss 33 inserted into the through hole 23 so as to contact the back surface of the circuit board 20.

  Hereinafter, the movement of the circuit board 20 supported by the above-described configuration when the external device 100 is attached / detached will be described.

  FIG. 5 is a schematic diagram showing the movement of the circuit board 20 when the external device 100 is inserted into the connector 15. FIG. 5 is a view corresponding to the cross-sectional view of FIG. 4C, and the housing 10 is omitted.

  When the external device 100 is inserted into the connector 15, downward stress is applied to the circuit board 20. At this time, the circuit board 20 is fixed at the fixed side end, and the connector 15 is provided on the movable side end side from the center of the circuit board 20 in the depth direction. The movable side end pivots downward (back side) around the center. The through hole 23 has a larger diameter than the boss 33, and a gap is formed around the boss 33. For this reason, even if the movable side end portion is slightly rotated downward, the inner wall surface of the through hole 23 does not come into contact with the boss 33, and a load is applied between the through hole 23 and the boss 33. There is no possibility that 20 itself will bend and break.

  Further, since the foam material spacer 34 is provided around the through hole 23 on the back surface side of the circuit board 20, the force that the movable side end of the circuit board 20 that rotates downward presses downward is foaming. It is absorbed by the contraction of the material spacer 34. Thereby, in contrast with the case where the back surface of the circuit board 20 is directly fixed by a rigid body or the like, it is possible to reduce the possibility that the circuit board 20 is damaged by the force from the upper side (force when the external device 100 is attached).

  Further, when the movable side end rotates downward, the circuit board 20 tends to move somewhat upward (on the mounting surface side). At this time, as in the case of the through hole 23 and the boss 33, since a gap is formed around the through hole 23, the inner wall surface of the through hole 22 does not contact the boss 32, and the circuit board 20 penetrates. There is no possibility that the hole 22 is damaged. Further, although the mounting surface of the circuit board 20 is fixed by the head of the screw 31, the mounting surface of the circuit board 20 is contracted by contraction of the foam spacer 34 provided around the through hole 22 on the back surface side of the circuit board 20. Since the load applied between the screw 31 and the head of the screw 31 is absorbed, the possibility of damage to the circuit board 20 can be reduced.

  FIG. 6 is a schematic diagram showing the movement of the circuit board 20 when the external device 100 is removed from the connector 15.

  When pulling out from the connector 15 of the external device 100, upward stress is applied to the circuit board 20. At this time, the movable side end of the circuit board 20 rotates upward (mounting surface side). As in the case of FIG. 5, since a gap is formed around the boss 33, the inner wall surface of the through hole 23 does not come into contact with the boss 33 even if the movable side end is slightly rotated upward. There is no possibility that the circuit board 20 is damaged. In addition, since the circuit board 20 is not fixed from the mounting surface side in the vicinity of the movable side end portion, there is no load applied to the mounting surface in the vicinity of the movable end portion that rotates upward, and the circuit board 20 is damaged. There is no fear.

  In the present embodiment, the circuit board 20 is prevented from turning upward by the mounting portion 14 of the housing 10 so that the movable side end of the circuit board 20 does not turn upward by a predetermined angle or more. That is, the mounting portion 14 constitutes a prevention portion according to the present invention. As a result, the movable side end of the circuit board 20 may rotate too much upward, causing the circuit board 20 to bend and bend, or the electrode pattern provided on the circuit board 20 to be disconnected and the connector part to be damaged. Can be prevented.

  Further, when the movable side end portion rotates upward, the circuit board 20 tends to slightly rotate the fixed side end portion downward. At this time, since a gap is formed around the through hole 23, the inner wall surface of the through hole 22 does not contact the boss 32, and the through hole 22 portion of the circuit board 20 is not damaged. Further, since the load applied between the mounting surface of the circuit board 20 and the head of the screw 31 is absorbed by the foam material spacer 34 that is in contact with the back surface of the circuit board 20, there is a risk of damage to the circuit board 20. Can be reduced.

  As described above, it is possible to prevent the circuit board 20 from being damaged by the load applied when the external device 100 is attached to and detached from the connector 15 mounted on the circuit board 20. Further, since the mounting surface of the circuit board 20 is fixed by the head of the rigid screw 31, the movable side end of the circuit board 20 can swing, but the circuit board 20 is stably fixed. .

  In addition, since the connector 15 is mounted to be inclined with respect to the mounting surface of the circuit board 20, when the audio device 1 is installed horizontally, the user tilts the external device 100 about 15 degrees from the vertical direction. However, it is difficult for the user to grasp how much the external device 100 needs to be inclined. For this reason, the external device 100 may be inserted / removed in an inclined state with respect to the insertion / removal direction of the connector 15 (a direction inclined about 15 degrees from the normal direction n).

  In this case, for example, if the circuit board 20 is fixedly supported at the four points of the through holes 22 and 23, a large load is applied between the connector 15 and the circuit board 20, and the connector 15 is damaged or the connector 15 and the circuit are connected. There is a risk of poor connection between the substrates 20. Therefore, in this embodiment in which one end portion (movable side end portion) of the circuit board 20 can swing up and down, even if the external device 100 is inclined with respect to the connector 15, the circuit board 20 swings. Thus, the load on the connector 15 can be reduced, and damage and the like can be prevented.

(Embodiment 2)
Below, Embodiment 2 of the board | substrate support structure which concerns on this invention is demonstrated with reference to drawings. In the first embodiment, the circuit board 20 is supported by the support plate 30 disposed on the back side of the circuit board 20. In the present embodiment, the circuit board 20 is mounted using a part of the housing 10. Supports the surface side. Below, the same code | symbol is attached | subjected about the member similar to Embodiment 1, and description is abbreviate | omitted.

  FIG. 7 shows the circuit board 20 when the audio device 1 is viewed from below. 8A is a cross-sectional view taken along line VIIA-VIIA in FIG. 7, FIG. 8B is a cross-sectional view taken along line VIIB-VIIB in FIG. 7, and FIG. 8C is a cross-sectional view taken along line VIIC-VIIC in FIG. Indicates.

  Bosses 12 and 13 are integrally formed in the housing 10 at positions that coincide with the through holes 22 and 23 of the circuit board 20 that are arranged to face each other. The bosses 12 and 13 have a cylindrical shape and are inserted into the through holes 22 and 23 from the mounting surface side of the circuit board 20. The diameters of the through holes 22 and 23 and the bosses 12 and 13 are the same as those in the first embodiment.

  A screw 31 is inserted into the boss 12 inserted into the through hole 22. The shaft portion of the screw 31 is screwed into the boss 12 so that the head portion contacts the back surface of the circuit board 20. A foam spacer 34 is provided around the boss 12 so as to come into contact with the mounting surface of the circuit board 20. The circuit board 20 is sandwiched and fixed between the foam spacer 34 and the head of the screw 31 screwed into the boss 12. The foam spacer 34 is also provided around the boss 13 inserted in the through hole 23 so as to contact the mounting surface of the circuit board 20.

  Even when the circuit board 20 is supported with such a configuration, the load on the circuit board 20 when the external device 100 is attached to and detached from the connector 15 can be reduced as in the first embodiment. As a result, damage to the connector 15 or the circuit board 20 can be suppressed.

  Note that the specific configuration of the audio device 1 can be appropriately changed in design, and the actions and effects described in the above-described embodiment are merely a list of the most preferable actions and effects resulting from the present invention. The actions and effects of the invention are not limited to those described in the above embodiment.

  For example, although the connector 15 is mounted on the mounting surface side of the circuit board 20, the mounting surface of the connector 15 may be a surface on the wiring pattern side of the circuit board 20. Further, the circuit board 20 may have a rounded corner, and the shape can be changed as appropriate. The inclination angle of the connector 15 with respect to the circuit board 20 may not be 15 degrees, may be inclined by 15 degrees or more, or may be perpendicular to the board plane.

1-Audio device 10-Case 14-Mounting part 15-Connector 20-Circuit board 22, 23-Through hole 30-Support plate (support part)
31-Screw 32, 33-Boss 34-Foam spacer 22, 23-Through hole 100-External device

Claims (5)

A substrate,
A support for supporting the substrate;
A connector portion that protrudes in the thickness direction of the substrate and is provided on one surface of the substrate, and for mounting an external device;
With
The support part is
Having a rigid body and an elastic body,
The substrate is sandwiched between the rigid body and the elastic body in the thickness direction, and a connector portion mounted on the substrate is supported so as to be swingable in the thickness direction.
Substrate support structure characterized in that The substrate has a hole penetrating in the thickness direction,
The rigid body is
A diameter smaller than the hole and inserted into the hole; and an engagement portion larger in diameter than the hole and engaged with the pillar;
Have
The substrate is
Sandwiched between and supported by the engaging portion and the elastic body,
The substrate support structure according to claim 1. The connector part is
The protruding direction from the substrate is provided inclined with respect to the normal direction of one surface of the substrate.
The substrate support structure according to claim 1, further comprising: A prevention unit for preventing the substrate from swinging more than a predetermined angle;
The substrate support structure according to claim 1, further comprising: The support portion supports the substrate at at least two points.
The substrate support structure according to claim 1, wherein the substrate support structure is a substrate support structure.

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