JP3604589B2 - Electronic device having a recording medium insertion port - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electronic device in which a nose having a recording medium insertion port is attached to a front portion of a housing, and particularly to an electronic device in which a circuit board provided on the housing side of the nose can have an area as large as possible. Equipment related.
[0002]
[Prior art]
FIG. 9 is a partial perspective view showing a conventional in-vehicle electronic device.
The housing 1 has a box shape formed of a metal plate. The housing 1 has a size of 1 DIN and is buried in a dashboard or the like in a vehicle cabin. A nose 2 made of a synthetic resin is attached to a front portion of the housing 1. An opening 3 is formed in the nose 2, and an operation member such as a push button is arranged on a front surface 2 a of the nose 2 in a portion other than the opening 3.
[0003]
In the housing 1, a protruding moving part 6 protruding forward from the opening 3 is provided. The protruding moving portion 6 includes a moving member 4 and an apparatus main body 5 rotatably connected to the moving member 4 by a shaft 4a. When the device is not used, the moving member 4 is moved inside the housing 1, and the device main body 5 is stored in the housing 1 in a horizontal posture.
[0004]
When the button for the projecting operation is pressed, the moving member 4 moves forward from the opening 3 toward the front of the housing 1. Further, the device main body 5 supported by the moving member 4 rotates in the direction of the arrow with the shaft 4a as a fulcrum, and the device main body 5 assumes a standing posture. The device main body 5 is provided with a display screen such as a liquid crystal panel and operation members, and the display screen and the operation members are directed toward the front of the housing 1 when the device main body 5 is in a standing posture.
[0005]
The nose 2 has an insertion opening 7 below the opening 3, through which a recording medium such as an MD, a CD, or a cassette tape is inserted. A drive mechanism for driving the recording medium inserted from the insertion port 7 is housed in the housing 1.
[0006]
[Problems to be solved by the invention]
In a nose 2 of this type of electronic device, a circuit board is attached to the housing 1 side. Switches and variable resistors corresponding to a large number of operating members arranged on the front surface 2a of the nose 2 are mounted on this circuit board. Further, on the circuit board, conductive patterns are densely formed in a region excluding the switches and the variable resistors.
[0007]
As shown in FIG. 9, when the insertion opening 7 of the recording medium is opened in the nose 2, it is necessary to form a concave portion corresponding to the insertion opening 7 in the circuit board. Further, the nose needs to be provided with a support frame for supporting the opening / closing door at the insertion opening from the housing side. For mounting the support frame, the circuit board is further extended from the recess. It is necessary to form a notch.
[0008]
As a result, the width of the circuit board is partially reduced. In a place where the width dimension is narrow, it is necessary to detour the conductor pattern, and it becomes very difficult to design the wiring of the conductor pattern on the circuit board. In particular, as shown in FIG. 9, in the case where both the opening 3 for projecting the projecting moving portion 6 from the nose 2 and the insertion opening 7 for the recording medium are formed, the vertical dimension of the circuit board is extremely large. If a notch for attaching the support frame is provided in the circuit board, the circuit board becomes partially extremely thin, and wiring design of the conductor pattern becomes extremely difficult.
[0009]
The present invention is to solve the above-mentioned conventional problems, and in a case where a support frame for supporting a door is attached to a nose, a width dimension of a circuit board adjacent to the support frame can be used as widely as possible. It is an object of the present invention to provide an electronic device having a recording medium insertion opening as described above.
[0010]
[Means for Solving the Problems]
The present invention provides a housing accommodating a drive mechanism for a recording medium, a nose attached to a front portion of the housing, an insertion opening for a recording medium formed in the nose, and a door for opening and closing the insertion opening. A circuit board attached to the housing side of the nose,
The nose has an opening communicating with the insertion port, and a support frame for supporting the door is attached from the housing side, and the circuit board extends to a position overlapping a part of the support frame. It is characterized by having.
[0011]
For example, a recess corresponding to the insertion opening is formed in the circuit board, and a peripheral portion of the recess overlaps a part of the support frame.
[0012]
In the case where the support frame for supporting the door is provided inside the insertion opening of the nose as described above, conventionally, the circuit board is attached so as to avoid the support frame. Therefore, the width dimension of the circuit board has become narrower, and it has been necessary to form the circuit pattern so as to bypass the conductor pattern of the circuit board at the narrow portion. However, in the present invention, the width dimension of the circuit board is made as large as possible by extending the circuit board to a position overlapping the support frame. Therefore, the conductor pattern can be routed on the circuit board with a relatively large margin.
[0013]
For example, on the outer periphery of the support frame, a mounting portion for mounting on a nose is formed so as to protrude, and the circuit board extends to a position overlapping the mounting portion.
[0014]
Conventionally, in the circuit board, a large notch was formed to avoid the mounting portion, but in the present invention, since the mounting portion and the circuit board overlap, the notch of the circuit board can be reduced, In some cases, the notch need not be formed. Therefore, the layout design of the conductor pattern on the circuit board can be given a margin.
[0015]
For example, an insertion hole is formed in the attachment portion, and a protrusion extending from the nose extends to a housing side through a notch or hole formed in the circuit board, and the protrusion is inserted into the insertion hole. In this state, the peripheral portion of the notch or hole of the circuit board overlaps with the mounting portion.
[0016]
Alternatively, a mounting hole is formed in the mounting portion, and a mounting screw inserted into the mounting hole and a hole or notch formed in the circuit board is screwed to the nose to fix the circuit board and the support frame. And a peripheral portion of the hole or the cutout of the circuit board overlaps with the mounting portion.
[0017]
Alternatively, a peripheral portion of the concave portion of the circuit board is sandwiched between a nose and a support frame, and an edge surface of the concave portion is substantially flush with an inner surface of the insertion port and an inner surface of an opening of the support frame. It may be extended.
[0018]
According to the present invention, the conductor formed on the circuit board can be extended to a position overlapping with a part of the support frame (or a position approaching a part of the support frame), so that the layout design of the conductor has a margin. Can have.
[0019]
For example, a protrusion moving portion that protrudes from the inside of the housing to the front of the housing is provided, and the nose has a size that covers a front portion of the housing in a region excluding a protrusion region of the protrusion moving portion. .
[0020]
In the case where the protruding region of the protruding moving portion is provided in the front part of the housing as described above, the nose must be made thinner, and the circuit board becomes narrower. In such a device, when a part of the support frame and the circuit board are overlapped, the conductor can be easily routed on the circuit board.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is an exploded perspective view showing a structure of a front part of a housing of an in-vehicle electronic device according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a state in which the device main body is turned to a standing posture in front of the housing. , FIG. 3 is an exploded perspective view showing the nose from the housing side, FIG. 4 is a rear view showing a part of the nose from the housing side, FIG. 5 is a rear view of the support frame, and FIG. 6 is a cross section taken along line VI-VI in FIG. FIG. 7 is a sectional view taken along line VII-VII of FIG.
[0022]
The in-vehicle electronic devices shown in FIG. 1 and the following have a box-shaped housing 11. In the figure, a housing 11 is bent in a U shape from a metal plate, and has a ceiling plate 12 and side plates 13, 13 bent at right angles from both sides of the ceiling plate 12. A bottom plate (not shown) is assembled to the bottom of the housing 11, and the bottom plate and the side plates 13, 13 are fixed with screws or the like. As shown in FIG. 1, at the front edge of the ceiling plate 12, a two-folded portion 12a is formed by partially folding a metal plate constituting the housing 11 into two.
[0023]
In the housing 11, a protruding moving part 20 is provided at a portion that is offset toward the ceiling plate 12 so as to protrude and move. Correspondingly, the upper region of the front part of the housing 11 is the projecting region 16 of the projecting moving part 20 (see FIG. 1). Further, in an area below the area in which the protruding moving section 20 moves in the housing 11, a disk drive mechanism for driving an MD (mini disk) as a recording medium, a circuit for driving a disk, a tuner, an amplifier And various electronic circuits such as a power supply circuit.
[0024]
A guide member 30 for guiding the projecting moving portion 20 is provided inside the side plates 13, 13 of the housing 11. A nose 40 that covers an area other than the projecting area 16 of the projecting moving section 20 is attached to a front portion of the housing 11.
[0025]
The protruding moving unit 20 is supported by a moving member 21 that moves within the housing 11, a supporting member 22 (see FIG. 2) that further moves inside the moving member 21, and a connecting shaft 25 supported by the supporting member 22. And the device main body 23.
[0026]
As shown in FIG. 1, the guide member 30 is a guide rail whose section is bent into an L-shape by a metal plate. The guide member 30 has a guide surface 31 extending parallel to the ceiling plate 12 and a bent portion 32 bent at a right angle from the guide surface 31. Further, the protrusion 33 protruding from the guide surface 31 is fitted to the side plate 13 so that the guide member 30 is positioned.
[0027]
Two rollers 24 are rotatably supported on the outer surface of the moving member 21. The rollers 24 roll between the guide surface 31 of the guide member 30 and the ceiling plate 12 of the housing 11. I do.
[0028]
In the stored state shown in FIG. 1, the tip 21 a of the moving member 21 and the upper surface 23 b of the device main body 23 slightly protrude forward from the housing 11. In this state, when the operation button 26 provided on the upper surface 23b of the device main body 23 is pressed, the motor starts. By the power of the motor, the moving member 21 first protrudes a short distance forward of the housing 11 and stops. Further, the support member 22 moves forward in the moving member 21 by the power of the motor. At this time, the device main body 23 connected to the support member 22 projects forward of the housing 11 in a horizontal posture. Further, the device main body 23 rotates upward with the connection shaft 25 as a fulcrum, and assumes a standing posture shown in FIG.
[0029]
As shown in FIG. 2, a display screen 27 is provided on a decorative surface 23a of the device main body 23. A frame 29a made of synthetic resin or the like is fitted around the outer periphery of the display screen 27, and a pair of ridges 29, 29 are integrally formed on the frame 29a so as to protrude. The projections 29, 29 have a function of protecting the decorative surface 23 a and the display screen 27 when the device main body 23 moves inside and outside the housing 11. Further, a concave portion 23c is formed in the decorative surface 23a, and an operation knob 28 as an operation member is disposed in the concave portion 23c.
[0030]
As shown in FIG. 1, the nose 40 is formed of a synthetic resin, and is installed at the front of the housing 11.
[0031]
The nose 40 has a main body 41 covering an area other than the protruding area 16 at the front of the housing 11, and side frame parts 42, 42 provided integrally on both sides of the main body 41. ing. On the front surface of the main body 41, an insertion port 46 is opened for inserting a recording medium such as an MD into the disk drive mechanism in the housing 11 and discharging the MD or the like from the disk drive mechanism. Various operation members 47 are arranged on the front surface of the main body 41.
[0032]
The side frame portions 42, 42 have projecting portions 42a, 42a extending above the main body portion 41. Ribs 42b1 are integrally formed on the distal ends 42b of the side frame portions 42, 42 and project in an L-shape in a direction in which the side frame portions 42 and 42 face each other. As shown in FIG. 1, plate-like insertion protrusions 43 extending in the direction of the housing 11 are integrally formed on the protrusions 42 a of the side frame portions 42, 42. A support piece 44 extending in the direction of the housing 11 is integrally formed on the side frame portions 42, 42. The support piece 44 is provided with a mounting hole 44a.
[0033]
When the nose 40 is installed at the front of the housing 11, the insertion protrusion 43 is inserted into a gap between the inner surface of the side plate 13 of the housing 11 and the bent portion 32 of the guide member 30. The support piece 44 is installed on the outer surface of the side plate 13 of the housing 11, and a mounting screw 45 is inserted into the mounting hole 44 a and screwed into a female screw hole 13 a formed in the side plate 13.
[0034]
As shown in FIG. 3, a rectangular tubular frame 51 is integrally formed in the main body 41 of the nose 40, and the insertion port 46 is formed in the frame 51. On the housing 11 side of the frame portion 51, a pair of protrusions 52, 52 is formed to project from the lower edge side. On both side pieces of the frame portion 51, projecting pieces provided with engaging holes 53, 53 are provided. Further, a hole 54 is formed on the upper edge side of the frame portion 51.
[0035]
A support frame 55 for rotatably supporting the door 48 is attached to the frame portion 51 from the housing 11 side. The support shafts 48 a of the door 48 are rotatably inserted into support holes (not shown) provided in the support frame 55. As shown in FIGS. 6 and 7, the door 48 located near the boundary between the frame portion 51 and the support frame 55 is rotatable both inside (1) and outside (2) of the housing 11. And is held at a neutral position shown in FIGS. 6 and 7 by a spring (not shown). When an MD, which is a recording medium, is inserted through the insertion slot 46, the door 48 is pushed by the MD and opens inward (1). When the MD is loaded into the drive mechanism in the housing 11, the door 48 is set to the neutral position. To return. When the MD is ejected from the inside of the housing 11, the door 48 is pushed by the MD, and the door 48 turns outward (2).
[0036]
As shown in FIGS. 3 and 5, the support frame 55 has an opening 55 a communicating with the insertion port 46. On the lower surface of the support frame 55, first mounting portions 55b, 55b are integrally formed so as to protrude, and insertion holes 55c, 55c are opened in the mounting portions 55b, 55b. A second mounting portion 55d is integrally formed on the lower surface of the support frame 55 so as to protrude, and a mounting hole 55e is formed in the mounting portion 55d.
[0037]
In addition, locking projections 55f, 55f are integrally formed on both sides of the support frame 55. As shown in FIG. 3, a projection 55g is integrally formed on the upper edge of the support frame 55 on the side facing the nose 40.
[0038]
A circuit board 57 is attached to the nose 40 on the housing 11 side. Support columns 58, 58 and a support column 59 extending toward the housing 11 are integrally formed inside the main body 41 of the nose 40. Correspondingly, mounting holes 57a, 57a and mounting holes 57b are formed in the circuit board 57.
[0039]
In FIG. 4, the circuit board 57 is shown with hatching. As shown in FIGS. 3 and 4, the circuit board 57 is formed with a concave portion 61 for avoiding the frame portion 51. The recess 61 is formed in a size that matches the outer peripheral surface of the frame 51 formed in the nose 40. A pair of notches 61a, 61a are formed in the inner edge of the recess 61. As shown in FIG. 4, the notches 61 a, 61 a are formed with a minimum size that allows the protrusions 52, 52 projecting from the frame 51 to pass through.
[0040]
A large number of switches (or switch elements) 62 are arranged on the front surface (the surface on the nose 40 side) 57c of the circuit board 57 as electronic functional components. Although not shown in FIG. 1, a large number of operation knobs 47a are arranged on the front surface of the main body 41 of the nose 40, and as shown in FIGS. Can be pressed.
[0041]
On the front surface 57c of the circuit board 57, a plurality (many) of conductor patterns 63 that are electrically connected to the contacts of the switch 62 are formed. The conductor pattern 63 is formed so as to avoid the switch 62. As shown in FIG. 3, in the circuit board 57, the width dimension of the board is extremely narrow in a portion where the concave portion 61 and the notch 61a are formed. Therefore, the conductor pattern 63 is wired to a position very close to the peripheral portion of the concave portion 61 and the peripheral portion of the notch 61a. A conductor pattern 63 is also formed between the recess 61 and the mounting hole 57b.
[0042]
Next, an operation of attaching the door 48, the support frame 55, and the circuit board 57 to the nose 40 will be described.
[0043]
First, the mounting holes 57a, 57a and 57b of the circuit board 57 are aligned with the supporting columns 58, 58 and 59 on the nose 40 side. At first, mounting screws are inserted into mounting holes 57a, 57a formed on both sides of the circuit board 57, and are screwed to the support columns 58, 58. Thus, the circuit board 57 is attached. At this time, as shown in FIG. 4, the recess 61 of the circuit board 57 matches the outer surface of the frame 51 of the nose 40, and the projections 52, 52 integrally projecting from the frame 51 are provided with the notches 61 a, The projections 52, 52 pass through the cutouts 61a, 61a and extend to the rear side of the circuit board 57.
[0044]
Next, a support frame 55 for supporting the door 48 is attached. The support frame 55 is inserted into the concave portion 61 of the circuit board 57, and the support frame 55 is abutted against the frame portion 51. The inner surface of the opening 55a of the support frame 55 and the inner surface of the insertion port 46 of the nose 40 are connected. It is attached so as to be continuous all around or partly. At this time, the locking projections 55f on both sides of the support frame 55 are locked in the locking holes 53 on the nose 40 side. The projection 55g is fitted into the hole 54 on the nose 40 side.
[0045]
When the support frame 55 is mounted on the frame portion 51, as shown in FIGS. 4 and 6, the projections 52, 52 projecting from the circuit board 57 to the rear side are formed by first mounting portions 55b, 55b of the support frame 55. 55b are inserted into the insertion holes 55c, 55c. At this time, the peripheral portions of the notches 61a, 61a of the circuit board 57 overlap the first mounting portions 55b, 55b.
[0046]
As shown in FIGS. 4 and 7, a second mounting portion 55 d extending below the support frame 55 is also stacked on the back side of the circuit board 57. The mounting hole 55e formed in the second mounting portion 55d and the mounting hole 57b formed in the circuit board 57 coincide with each other. As shown in FIG. 7, in this state, a mounting screw 65 is inserted into the mounting hole 55e and the mounting hole 57b, and is screwed into a female screw hole at the tip of the support column 59 on the nose 40 side.
[0047]
As described above, the support frame 55 is positioned by the concave and convex fitting of the first mounting portions 55b, 55b and the like, and is fixed by screwing the second mounting portion 55d. At this time, the edge of the circuit board 57 extends to a position overlapping the first attachment portions 55b, 55b, and also extends to a position overlapping the second attachment portion 55d. Therefore, in the portion where the support frame 55 is mounted, it is possible to minimize the reduction in the vertical width of the circuit board 57, and it is possible to allow the wiring area of the conductor pattern 63 to have a margin.
[0048]
That is, the conductor pattern 63 can be formed at a position approaching the notch 61a and in a region overlapping with the first attachment portion 55b, and at a portion overlapping with the second attachment portion 55d, the edge of the concave portion 61 is attached to the second attachment portion 55d. The conductor pattern 63 can be formed also in a region between the hole 57b. Therefore, the layout design of the conductor pattern 63 on the front surface 57c of the circuit board 57 can be facilitated.
[0049]
Particularly, in this embodiment, since the projecting moving portion 20 (the device main body 23) is provided so as to protrude in the housing 11 having a limited size of 1 DIN size, the vertical direction of the main body portion 41 of the nose 40. Width dimension is small. Further, since the insertion opening 46 is formed in the main body portion 41 having the small width, the concave portion 61 must be formed in the circuit board 57, and the width of the circuit board 57 is formed in the portion where the concave portion 61 is formed. Is very narrow. Since the conductor pattern 63 is formed in this narrow area so as to avoid the switch 62, the conductor pattern 63 must be formed densely.
[0050]
In the above embodiment, the circuit board 57 is extended to the position where the circuit board 57 overlaps the first mounting portion 55b and the second mounting portion 55d, so that the width of the circuit board can be made as large as possible. Can afford.
[0051]
Next, FIG. 8 is a sectional view of a nose showing another embodiment of the present invention.
[0052]
In this embodiment, the edge surface 61b of the concave portion 61 of the circuit board 57 shown in FIG. 3 extends to a position sandwiched between the frame portion 51 of the nose 40 and the support frame 55. The edge surface 61b is substantially flush with the inner surface of the insertion slot 46 and the inner surface of the opening 55a of the support frame 55.
[0053]
In this embodiment, since the edge surface 61b of the circuit board 57 is close to the internal passage of the insertion port 46, the conductor pattern 63 can be formed close to the edge surface 61b, and the design margin of the conductor pattern can be further reduced. Can be caused.
[0054]
【The invention's effect】
As described above, in the present invention, when a recording medium insertion port is formed in the nose, and a support frame for supporting the door is attached to the insertion port, a part of the support frame and the circuit board are overlapped to form a circuit. The substrate can be used in a wide width dimension, and a margin can be given to the formation of the conductor pattern.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a structure of a front part of a housing of an in-vehicle electronic device according to an embodiment of the present invention;
FIG. 2 is a perspective view showing a state in which the device main body is turned to a standing posture in front of the housing,
FIG. 3 is an exploded perspective view showing a nose from a housing side;
FIG. 4 is a partial rear view showing the nose from the housing side;
FIG. 5 is a rear view showing a support frame;
FIG. 6 is a sectional view taken along line VI-VI of FIG. 4;
FIG. 7 is a sectional view taken along line VII-VII of FIG. 4;
FIG. 8 is a sectional view showing a nose according to another embodiment;
FIG. 9 is a partial perspective view showing a front part of a conventional in-vehicle electronic device;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Housing 12 Ceiling board 12a Folding part 13 Side plate 20 Projection moving part 21 Moving member 22 Support member 23 Equipment main body 27 Display screen 30 Guide member 40 Nose 41 Main part 46 Insertion opening 48 Door 51 Frame part 52 Projection 55 Support frame 55b First mounting portion 55c Inserting hole 55d Second mounting portion 55e Mounting hole 57 Circuit boards 57a, 57b Mounting holes 58, 59 Support pillar 61 Recess 61a Notch 61b Edge 62 Switch 63 Conductor pattern

Claims (8)

A housing accommodating the drive mechanism for the recording medium, a nose attached to the front of the housing, an insertion opening for the recording medium formed in the nose, a door for opening and closing the insertion opening, and a housing for the nose. And a circuit board attached to the body side,
On the nose, a support frame that has an opening communicating with the insertion port and supports the door is attached from the housing side, and the circuit board extends to a position overlapping a part of the support frame. An electronic device characterized by the following. The electronic device according to claim 1, wherein a recess corresponding to the insertion port is formed in the circuit board, and a peripheral portion of the recess overlaps a part of the support frame. The electronic device according to claim 1, wherein an attachment portion for attaching to a nose is formed to project from an outer periphery of the support frame, and the circuit board extends to a position overlapping with the attachment portion. An insertion hole is formed in the mounting portion, and a protrusion extending from the nose extends to a housing side through a notch or hole formed in the circuit board, and the protrusion is inserted into the insertion hole. 4. The electronic device according to claim 3, wherein a peripheral portion of the notch or the hole of the circuit board overlaps the mounting portion. A mounting hole is formed in the mounting portion, and a mounting board inserted into a hole or a cutout formed in the mounting hole and the circuit board is screwed to the nose to fix the circuit board and the support frame. 4. The electronic device according to claim 3, wherein a peripheral portion of the hole or the cutout of the circuit board overlaps with the mounting portion. A peripheral portion of the concave portion of the circuit board is sandwiched between a nose and a support frame, and an edge surface of the concave portion extends to a position substantially flush with an inner surface of the insertion port and an inner surface of an opening of the support frame. The electronic device according to claim 2. 7. The electronic device according to claim 1, wherein a conductor formed on the circuit board extends to a position overlapping a part of the support frame. A protruding moving portion that protrudes and moves from the inside of the housing to the front of the housing is provided, and the nose is sized to cover a front portion of the housing in a region excluding a protruding region of the protruding moving portion. The electronic device according to claim 1.

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