JP2002311971A - Electronic music box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic music box which is stored in a thin and easily assembled case. SOLUTION: The electronic music box has at least a semiconductor memory element 106 which stores musical note signals and has a function to reproduce a music based on the stored musical note signals, a processor 105, a sound generator 110, a circuit board 10 on which an amplifier 111 is installed, a speaker 7 and a battery 3. The box is provided with a square case main body 1 in which an opening section is provided on the bottom surface and supporting sections 11 of one side are formed to hold the board 10 at the four corners of the inner side, a square frame body 2 on which supporting sections 21 of the other side are formed to hold the board 10 at the opposing positions of the sections 11 of the body 1, has a mounting section 25 of a battery case 4 and has engaging sections 23 and 24 on both sides and a cover body 5 which has locking sections 51 and 52 to engage with the sections 23 and 24 of the body 2. The board is held between the case main body and the frame body and the body 5 is made freely attachable to an detachable from the frame body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic music box, and more particularly to an electronic music box housed in a thin and easily assembled case.

[0002]

2. Description of the Related Art An electronic music box has conventionally been used as a device for sending a music or the like by electronic sound to the other party during a so-called call hold, in which the other party is temporarily waited during a telephone call. There are many. However, other than such a method of use, like a conventional mechanical acoustic music box, it is being used as a single electronic music box, and as an electronic music box according to the invention of the present applicant, Japanese Patent Application Laid-Open No. 10-161686. And JP-A-11-21
No. 2584. The former electronic music box is composed of an electronic music box circuit including an electronic circuit including a memory circuit or the like in which a musical note generated by electronic sound is stored, a speaker, and the like, and a cardboard made of cardboard for accommodating the electronic circuit board and the like. It relates to an electronic music box composed of a case.

Further, the latter electronic music box provides an electronic music box capable of arbitrarily rewriting music by means of a note signal from a note signal generating device constituting music provided outside, and a music note signal of music. The present invention relates to an electronic music box in which a memory device to be stored can be provided externally so that different music can be heard by exchanging the memory device.

[0004]

The former electronic music box has good sound quality of the music to be played, and is cut out of cardboard and assembled by bending. There are advantages such as not being required. However, since it is necessary to decorate the appearance by attaching colored paper or the like to the cardboard case after assembly, it is suitable for small-quantity production, but there is a problem that the cost increases as the production volume increases. In addition, there is a problem that it is difficult to reduce the size, especially the thickness, from the point of assembly accuracy because of the bending process.

Further, the latter electronic music box relates to a circuit configuration of the electronic music box based on a novel idea, and does not particularly refer to a case for storing the electronic music box. Can be stored in a case. Therefore, in a conventional electronic music box, an effective and specific electronic music box housed in a plastic case is not known. The electronic music box according to the present invention uses a plastic case suitable for mass production and achieves a reduction in thickness. The circuit configuration of the electronic music box will be described based on the electronic music box circuit disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 11-212584.

[0006]

SUMMARY OF THE INVENTION An electronic music box according to the present invention is a semiconductor memory device capable of arbitrarily writing and reading a note signal corresponding to a note constituting music, and a note signal generator for serially generating the note signal. A processing device that stores the note signal transmitted from the device in the semiconductor memory element at a predetermined timing, reads the note signal stored in the semiconductor memory element, converts the note signal into note data, and outputs the note data; A printed circuit board equipped with a sound generator that converts the note data output from the device into a sound signal and outputs the signal, a speaker that converts the output of the sound generator into sound, and a battery that supplies power to each circuit. An electronic music box having an opening on the lower surface, and the speaker on the upper surface facing the opening. A case body comprising a rectangular box-shaped body having a speaker mounting portion provided with a sound emission hole and having one support portion sandwiching the printed circuit board at four inner corners, and mounted inside the case body. That is, at a position facing each of the support portions of the case body,
A second columnar supporting portion for holding the printed circuit board is formed, a mounting portion for a battery case accommodating the battery, and a rectangular frame having engaging portions on both sides; and a lower surface of the case body A lid having a locking portion that engages with both engaging portions of the frame, wherein the speaker is fixed to the inside of the upper surface of the case body, and the battery case is mounted on the frame. The printed circuit board is sandwiched between the support portion of the case main body and the support portion of the frame body in a state where the frame body is fixed, and the support portion of the frame body and the support portion of the case main body are fixed. Then, the frame and the printed circuit board are fixed to the case main body, and the locking portion of the lid is engaged with the engaging portion of the frame, and the lid is detachably attached to the frame. It is characterized by having been constituted.

[0007]

FIG. 1 is an exploded perspective view of an electronic music box according to the present invention, which has a cutout in a part. In FIG. 1, 1 is a case body, 2 is a frame, and a battery case 4 in which a battery 3 is stored is mounted. Reference numeral 5 denotes a lid, and reference numeral 6 denotes an assembling screw. Only one of the necessary four screws is described. Reference numeral 10 denotes a circuit board on which main circuit components of the electronic music box are mounted, which are connected to the speaker 7 and the terminal 8 of the battery case 4 by a lead wire 9, respectively.

Next, each component will be described with reference to FIGS. The circuit configuration of the electronic music box is as shown in FIG.
A jack 101 is provided on the circuit board 10, and a musical note signal of music is inputted as serial data from a plug 104 through a transmission line 103 from an external note signal generator 102. The note signal is stored in a semiconductor memory device 106 such as an EEPROM at a predetermined timing by a clock signal through a processing device 105 including a CPU. The jack 101 is connected to the plug 1 as shown in FIG.
When the plug 04 is inserted, the signal line 107 of the jack 101 is connected to the signal line of the plug 104, so that writing to the semiconductor memory element 106 is enabled. At this time, the control line 108 is separated from the ground. When the plug 104 is not inserted, the control line 108 of the jack 101 is grounded as shown in FIG. 8B, and the note signal stored in the semiconductor memory element 106 can be read. become.

The operation of the electronic music box is controlled by a switch 109.
Is turned on, the battery 4 is connected and power is supplied,
The note signal stored in the semiconductor memory element 106 is read out at a predetermined timing, and 8-bit note data (D _{0 to} D ₇ ) and data / command (D
/ C) to the sound generator 110 via data lines (D _{0 to} D ₇ , A ₀ ) and write signals to the sound generator 110 via write signal lines (WE, CS). The sound generator 110 converts the sound data based on the note data (D _{0 to} D ₇ ), the data / command (D / C) and the write signal into a sound signal, and outputs the sound signal.
Is to transmit music.

[0010] The volume of the electronic music box is adjusted by a volume 112 integrated with a switch 109 provided at the front stage of the audio amplifier 111, and the tone is sequentially controlled by, for example, a pressing operation section 116 of a push button type switch 113. It can be changed to multiple types of sounds such as music box, organ, piano, crystal and so on. In addition,
At four corners of the circuit board 10, positioning holes 114 for fixing the circuit board 10 to the case body 1 are provided.

Next, an assembly structure of the electronic music box of the present invention will be described. As shown in FIGS. 2A and 2B, the case main body 1 is a rectangular box having an opening bottom on the lower surface, and the circuit board 1 extends downward from the upper surface of the four inside corners thereof.
One supporting portion 11 for holding the “0” is provided. The support portion 11 is formed in a columnar shape, and a small hole 12 having a required depth is provided at a lower end thereof. A plurality of sound emitting holes 13 of the speaker 7 are provided on the upper surface of the case body 1,
A hole 14 for projecting a switch 109 and an operation knob 115 of a volume 112 provided on the circuit board 10 and a hole 15 for slightly projecting a tip of a push-down switch 116 of a push button type switch 113 are provided. . On the inner side of the upper surface, a guide portion 16 for fixing and arranging the speaker 7 is provided.
Is provided, and the peripheral portion of the speaker 7 is fixed with an adhesive or the like. On one side surface of the case body 1, an insertion opening 17 for the plug 104 into the jack 101 provided on the circuit board 10 is provided.

As shown in FIGS. 3A and 3B, the frame 2
It is formed in a rectangular frame shape, and the circuit board 1
The other supporting portion 21 for holding 0 is provided upright. Each support portion 21 has an insertion hole 22 for the screw 6.
Is provided, and the circuit board 10 is connected to the support portion 11 of the case body 1.
After being sandwiched between the support member 21 of the frame body 2 and the support member 21, it is fixed by the screw 6. The tip of the screw 6 is a tapping screw, and is fixed so as to bite into the small hole 12 of the support portion 11. One of the left and right opposing portions of the frame 2 (left side in the drawing) is provided with a locking hole 23 for locking a hooking portion 51 of the lid 5 described later, and the other (right side in the drawing) is provided. A notch 24 for fitting an elastic fitting portion 52 of the lid 5 described later is provided. Further, a battery case fixing portion 25 having a step for fixing the battery case 4 is provided at the upper and lower opposing portions of the frame 2, respectively.
The battery case 4 is fixed with an adhesive or the like.

As shown in FIGS. 4A and 4B, the lid 5
The rectangular flat plate has a basic shape, and as described above, the hooking portion 51 that is locked in the locking hole 23 provided in one of the frame bodies 2 has a required width and has an inward inversion. It is formed in an L-shape, and its tip is to be locked in the locking hole 23 of the frame 2. The elastic fitting portion 52 fitted into the notch portion 24 provided on the other side of the frame body 2 has a required width and is formed in an inverted U shape having one end fixed to the flat plate portion. Have been. As shown in the partial perspective view of FIG.
Locking projections 5 locked on notches 24 on both sides on the tip side
3, the width of the leading end portion 54 is slightly reduced, and a pressing portion 55 slightly protruding in the width direction of the lower end portion is formed.

The pressing portion 55 presses the pressing portion 55 with a fingertip when the lid 5 is removed from the state where the lid 5 is mounted on the frame 2, narrows the inverted U-shaped portion, and The portion 53 can easily release the locked state from the notch 24 of the frame 2. Note that the foremost portion 54 is configured not to protrude below the lower surface of the lid 5. The external view of the assembled state of the electronic music box according to the present invention i described above,
It will look like the perspective view shown in FIG.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment of the electronic music box of the present invention described above shows a basic configuration example, and various fixing means can be employed in detail. In the above embodiment,
As means for holding the circuit board 10 between the case body 1 and the frame body 2, the circuit board 10 is held by screws 6 and the frame body 2 is fixed to the case body 1. The insertion hole 22 or the small hole 1 of the counterpart support portion is provided in either the portion 11 or the support portion 21 of the frame 2.
A protrusion (not shown) that can be press-fitted into the cover 2 may be provided.

In this case, as shown in a schematic view in FIG. 6, an engaging recess 26 is provided in at least the opposite frame portion of the outer peripheral portion of the frame member 2 and the frame member 2 is provided on the inner surface of the case body 1. An engagement projection 27 corresponding to the recess 26 is provided, and the engagement projection 2 of the case body 1 is held while the circuit board 10 is sandwiched.
The engagement recess 26 of the frame 2 may be fitted into the frame 7.
Further, the projecting portion (not shown) provided on one of the support portion 11 of the case body 1 and the support portion 21 of the frame body 2 is inserted into the insertion hole 22 or the small hole 12 of the counterpart support portion. At the time of press fitting or fitting, fixing may be performed using an adhesive. Thus, each of the support portions 1 of the case body 1 and the frame 2
When the parts 1 and 21 are fixed to each other by press-fitting means or adhesive means, assembly can be performed without using any screws 6.

The support portions 11 at the four corners provided on the case body 1 are each formed in a columnar shape. However, the support portions 11 may be formed in a rectangular column shape, or may be formed integrally with the wall surface without being independent at the four corners. And the circuit board 1
0 switch for power supply and volume 1
An operation knob 115 that is also used as the button 12 or a push-down operation section 116 of the tone color adjustment switch 113 may be provided so as to protrude from the side surface of the case body 1.

[0018]

According to the electronic ogor of the present invention, as described above, a circuit board on which electronic components such as a music storage unit and a playback unit are mounted is mounted between a case body and a frame on which a battery case is mounted. While holding, this frame is fixed to the case body,
In addition, since the lid that closes the bottom is fixed to the frame, the structure of the electronic music box can be made thinner, assembling is easy, work efficiency can be improved, and costs can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of an electronic music box of the present invention.

FIG. 2 is a bottom view and an AA cross-sectional view of one embodiment of a case body of the electronic music box of the present invention.

FIG. 3 is a top view and a sectional view taken along the line BB of an embodiment of the frame of the electronic music box of the present invention.

FIG. 4 is a top view, a front view, and a partial perspective view of a main locking portion of an electronic music box cover according to an embodiment of the present invention.

FIG. 5 is a perspective view showing one embodiment of an assembled state of the electronic music box of the present invention.

FIG. 6 is a schematic diagram for explaining means for fixing the case body and the frame of the electronic music box of the present invention.

FIG. 7 is a block circuit diagram of one embodiment of a circuit configuration of the electronic music box of the present invention.

FIG. 8 is a connection diagram showing one embodiment of a connection relationship between a plug and a jack when a musical note signal is input to the electronic music box of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Case main body 2 Frame 3 Battery 4 Battery case 5 Lid 6 Screw 7 Speaker 8 Battery connection terminal of battery case 9 Connection line 10 Circuit board 11 Circuit board support part of case main body 12 Small hole of support part 11 13 Speaker release Sound hole 14 Hole for projecting switch / volume control knob 15 Hole for projecting operation part of tone adjustment switch 16 Speaker placement guide 17 Plug insertion hole for jack 21 Circuit board support for frame 22 Support 21 insertion hole 23 locking hole 24 notch portion 25 battery case fixing portion 26 engaging concave protrusion of frame body 27 engaging convex portion of case body 51 hook portion 52 fitting portion 53 locking protrusion 54 pressing portion 55 Forefront part 101 Jack 102 Musical note signal generator 103 Transmission line 104 Plug 105 Processing unit 106 Semiconductor memory device 107 Signal Line 108 control lines 109 supply switches 110 Sound generator 111 audio amplifier 112 volume 113 pushbutton type switch 114 positioning holes 115 volumes of the operation knob 116 push-button switch of the depressing operation portion

Claims (3)

[Claims] 1. A semiconductor memory device which can arbitrarily write and read a note signal corresponding to a note constituting music, and a predetermined note signal transmitted from a note signal generator which serially generates the note signal. A processing device for storing the note signal stored in the semiconductor memory element at the timing, converting the note signal stored in the semiconductor memory element into note data, and outputting the note data; and outputting the note data output from the processing apparatus as a sound signal. A printed circuit board equipped with a sound generator that converts and outputs
An electronic music box including a speaker for converting an output of the sound generator into sound and a battery for supplying power to each of the circuits. An electronic music box having an opening at a lower surface, and a speaker at an upper surface facing the opening. A case body comprising a rectangular box-shaped body having a speaker mounting portion provided with sound holes and one supporting portion for sandwiching the printed circuit board at four inner corners, and mounted inside the case body; Wherein the other column-shaped support portion for sandwiching the printed circuit board is formed at a position facing each of the support portions of the case main body, and has a mounting portion for a battery case for housing the battery. And a rectangular frame having engagement portions on both sides, and a lid that closes a lower surface of the case body and has a locking portion that engages with both engagement portions of the frame. Of the case body The printed circuit board is sandwiched between the support portion of the case body and the support portion of the frame in a state in which the speaker is fixed to the inner side of the upper surface, and the battery case is fixed to the frame. The frame and the printed circuit board are fixed to the case body by fixing the support portion and the support portion of the case body to each other, and the locking portion of the lid is the engagement portion of the frame body. An electronic music box, wherein the lid is detachably mounted on the frame by engaging with the electronic music box. 2. A screw hole is provided in each of said column-shaped support portions of said frame body, and a screw hole is provided in each of said support portions of said case main body. 2. The printed circuit board and the frame body are fixed to the case body by screws inserted from the frame body side while holding the printed circuit board between the support part of the frame body and the support part. 3. Electronic music box. 3. A fitting projection is provided at an end of each of said support portions of said case body or said columnar support portion of said frame, and said columnar support portions or said support portions of said case body. A fitting hole into which the fitting protrusion is fitted is provided at a tip end of the printed circuit board, and the printed circuit board is sandwiched between each of the support portions of the case body and the support portion of the frame body. The electronic music box according to claim 1, wherein the printed board and the frame are fixed to the case body by press-fitting or the adhesive with the fitting hole.