JP2003264381A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the assembling of an upper case 1 and a lower case 2 or the repair checking of an electronic apparatus (electronic musical instrument) wherein the upper case 1 and the lower case 2 are structured so as to embrace each other and an upper side circuit board 11 of the upper case 1 side is connected with a lower side circuit board 2 of the lower case 2 side. <P>SOLUTION: The end of a connection cable 13 connected with the upper side circuit board 11 is held by an uprighted segment 121 formed in a shielding member 12. An aperture 10 is formed in the bottom of the lower case 2, and an aperture 22a is formed in a shielding member 22. A notch 221 is formed in the shielding member 22 of the lower case 2 side. The lower case 2 is mounted on the upper case 1. The uprighted segment 121 and the connection cable 13 are arranged in the notch 221 of the shielding member 22. A contact terminal 13a of the connection cable 13 is connected with a connector 21a of the lower side circuit board 21 by inserting the hand from the aperture parts 10, 22a. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a case body having a structure in which an upper case and a lower case are bound together, and an upper case mounting member such as a circuit board on the upper case side and a circuit board on the lower case side. The present invention relates to an electronic device that is connected to a lower case mounting member.

[0002]

2. Description of the Related Art Conventionally, there is an electronic keyboard instrument as an electronic device as described above. An upper circuit board for arranging operation switches and a display device on the panel surface is attached to the upper case of the electronic keyboard instrument. Further, a lower circuit board constituting a main control circuit, a tone generator circuit, an input / output circuit, etc. is attached to the lower case. The upper circuit board and the lower circuit board are connected by a connection cable.

When assembling such an electronic keyboard instrument, the upper case side and the lower case side are individually assembled, the upper circuit board and the lower circuit board are connected by a connecting cable, and then the upper case is turned upside down. Place it on a workbench, cover it with a lower case, and fix screws from the lower case side to assemble the upper and lower cases. When disassembling the product for repair or inspection, place it on the work table with the upper case side down and remove the screws from the lower case side to separate the lower case from the upper case.

[0004]

However, when connecting the upper circuit board and the lower circuit board, the upper case and the lower case are arranged side by side and connected by a connecting cable, and then the lower case is placed on the upper case. It is necessary to lengthen the connection cable in order to facilitate the work of mounting the. Particularly, in the case of a large-sized electronic keyboard musical instrument (musical instrument having 76 keys or more), both the upper case and the lower case are heavy, so that the assembling work becomes large and the connecting cable needs to have a sufficient length. For example, if the length of the connecting cable is not long enough, the connecting cable may be pulled while moving the lower case, and the connecting cable is easily cut by the inertia of the heavy lower case and the upper case.

However, if the connection cable is long, it is necessary to carefully store the connection cable in the case body even when the lower case is attached, and there is a problem that the work is time-consuming. Also, when removing the lower case from the upper case during repair inspection, it is necessary to pull out the connection cable at the same time, but be careful not to entangle the connection cable with other parts or to give tension to the connection cable. It was necessary, and there was a problem that it took time to work.
The connection cable does not necessarily connect the circuit boards to each other, but includes the built-in electronic devices and the circuit boards or the built-in electronic devices provided in the upper case and the lower case (these are referred to as “upper case mounting member” and “lower case”). It is called "case attachment member".)
The same applies to the case of connecting.

According to the present invention, the upper case and the lower case are combined together to form a case body, and the upper case-side upper case mounting member and the lower case-side lower case mounting member are connected to each other. It is an object to facilitate the assembly work or repair / inspection work of the upper case and the lower case in the equipment.

[0007]

An electronic device according to claim 1 of the present invention is an electronic device in which an upper case and a lower case are combined together to form a case body, and an electric power supply attached to the upper case is provided. And a lower case mounting member which is mounted on the lower case and which needs to be electrically supplied, and a connection which is provided on the upper case mounting member and electrically connects to the lower case mounting member. A member, a connecting member provided on the lower case mounting member and electrically connected to the upper case mounting member, and in the vicinity of the connecting member on the case side in at least one of the upper case and the lower case. After opening and connecting the upper case and the lower case by tying and coupling, the connecting member of the upper case and the connecting member of the lower case are electrically connected from the opening. Characterized in that the so that.

The "upper case mounting member" and the "lower case mounting member" are the "built-in electronic equipment" and "circuit board" as described above. Further, both the upper case side and the lower case side connection members are, for example, one of a "connector" fixed to a circuit board and the other of a connection cable drawn from another circuit board connected to this "connector". "Terminal"
(It does not matter whether or not a connector is provided).

According to the electronic device of the first aspect of the present invention configured as described above, the connecting member such as the connector can be connected and disconnected through the opening. Therefore, at the time of assembly, the upper case and the lower case are tied together. A connector or the like may be connected through the opening, and when disassembling, the upper case and the lower case may be separated after removing the connector or the like through the opening. Therefore, the length of the cable can be minimized, and the assembling work and repair / inspection work become extremely easy.

According to a second aspect of the present invention, in an electronic device in which an upper case and a lower case are bound together to form a case body, the electronic device is mounted on the upper case and requires electrical supply. A member, a lower case mounting member that is mounted on the lower case and needs to be electrically supplied, a connecting member that is provided on the upper case mounting member and electrically connects to the lower case mounting member, and the lower case A connection member provided on the attachment member for making an electrical connection to the upper case attachment member, a connection auxiliary member for assisting a coupling work of the both connection members, and at least one of the upper case and the lower case. And an opening opened in the vicinity of the connection member on the case side, the connection auxiliary member holds the connection member of the case, and holds the upper case and the lower case. After Align bonded, via the connection supporting member from said opening, characterized in that so as to electrically connect the connecting member of the connecting member and the lower case of the upper case.

According to the electronic device of the second aspect configured as described above, the same operational effect as that of the first aspect can be obtained. Further, for example, if an opening is formed in the lower case, the connection assisting member is configured so that the connecting member of the upper case (the connecting member of the case in which the opening is not opened) is located near the opening of the lower case. Since the connection member on the lower case side is held in the vicinity of this opening, the connection member on the lower case side held by the connection auxiliary member can be easily connected to the connection member on the upper case side. It can be confirmed, and as a result, the assembling work becomes easier. Further, since the connection auxiliary member can be held by the connection auxiliary member even when disassembled, the work is facilitated.

The opening may be closed with a lid after the wiring of the connecting member is connected.

One of the connecting members is a connecting cable and the other is a connector (terminal side), and the connecting assisting member is formed by a standing piece of a frame standing from the inside toward the opening. The connection cable may be slidably held by the upright piece, and the connection cable may be guided by the upright piece when the connection member is connected to assist the connection. This facilitates connection work. As for the method of holding the connection cable by this standing piece, the connecting cable may be fastened by wrapping a string or band around the standing piece with an appropriate force, or the standing piece itself may have a C-shaped horizontal cross section. The connection cable may be fitted therein in the shape of.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 is a perspective view of essential parts of the keyboard-type electronic musical instrument (electronic device) of the embodiment. FIG. 3 shows a state in which the electronic musical instrument is turned upside down, and a case body of the electronic musical instrument has a structure in which an upper case 1 and a lower case 2 made of synthetic resin are bound together. A first opening 10 and a second opening 20 are formed on the bottom surface of the lower case 2, and the first opening 10 and the second opening 20 are aligned with each opening. The shaped lids 10A and 20A are fitted respectively. A shield member, which will be described later, is provided in the upper case 1 and the lower case 2, and the lids 10A and 20A are provided.
Shield plates 10A-1 and 20A-1 such as a thin iron plate or an aluminum plate for shielding the openings of the shield member corresponding to the openings 10 and 20 are attached to the back surface of the. In the lower case 2, the openings 10, 2
On the front side of 0 (player side, the same applies hereinafter), there is formed an inner part 30 which is a fixed part of the keyboard device exposed on the panel surface side of the upper case 1 which is not shown in the drawing.

FIG. 1 is a sectional view showing the state in which the upper case 1 and the lower case 2 are separated together with their schematic structure, and FIG. 2 is a sectional view showing the state in which the upper case 1 and the lower case 2 are assembled together with their schematic structure. 1 and 2 correspond to the cross section taken along the line AA of FIG. 3, and show the vicinity of the first opening 10. FIG. 4 is a sectional view taken along the line BB of FIG. 1 and 2, illustration of the front side of the electronic musical instrument (left side of the figures) is omitted.

Inside the upper case 1, an upper circuit board (upper case mounting member) 11 for performing signal processing of operation switches and indicators (not shown) arranged on the panel surface 1A is provided on the boss 1.
It is screwed at a and 1a. Also, inside the upper case 1 inside the upper circuit board 11 (on the lower case 2 side)
A shield member 12 is provided in the. A connection cable (connection member) 13 made of a flat cable having flexibility is connected to the terminal 11a on the upper circuit board 11.
A contact terminal portion 13a is formed at the other end of the connection cable 13 by exposing the conductive member. The connection cable 13 is held by a band 121a on a standing piece (connection auxiliary member) 121 formed on the shield member 12 near the contact terminal portion 13a.

Inside the lower case 2, a main control circuit,
A lower circuit board (lower case mounting member) 21 that constitutes a sound source circuit or an input / output circuit, and a shield member 22 are provided. The lower circuit board 21 includes the upper circuit board 11
A connector (connecting member) 21a for inserting and connecting the connection cable 13 is attached for electrical connection with the.

Each of the shield members 12 and 22 is formed by pressing a thin iron plate or an aluminum plate or the like, and has a box shape including a substantially rectangular parallelepiped space having a rectangular bottom surface and four side surfaces surrounding the bottom surface. It is said that. Both bottom surfaces of the shield members 12 and 22 have substantially the same facing shape. Further, flanges 12a and 22a are provided around the ends of the four side faces and extend outwardly at substantially right angles to the side faces. The lower case 2 has an inner part 3 for fixing the keyboard device.
The shield member 22 is provided on the rear side of 0 (the side opposite to the performer).
The shield member 2 has an accommodating portion 2A having substantially the same shape as that of the shield member 2
2 is fitted and disposed in the accommodation portion 2A. And
The shield member 22 is fixed to the lower case 2 at its flange 22a by screws 6 and 6. Further, one end of the lower circuit board 21 is the flange 22 of the shield member 22.
It is fastened together with a screw 6 at a. Further, the shield member 22 on the lower case 2 side is cut and raised on the side (inside) opposite to the flange 22a to form a claw 22b (FIGS. 1 and 2).
Has been extended. Although not shown in the figure, a plurality of the claws 22b are formed.
Thus, the other end of the lower circuit board 21 is fixed to the shield member 22.

Further, the shield member 12 on the upper case 1 side
Is the boss 1b, 1 of the foot length of the upper case 1 and the flange 12a.
When the upper case 1 and the lower case 2 are assembled, the shield member 12 of the upper case 1 and the shield member 22 of the lower case 2 approach the flanges 12a, 22a when the upper case 1 and the lower case 2 are assembled. And are arranged to face each other. Thereby, the shield members 12, 2
2 are opposed to each other and substantially cover the lower circuit board 21. In addition, between the flanges 12a and 22a, approximately 2 to
The flanges 12a, 2 have a gap of about 3 mm.
Notches are appropriately provided in portions of 2a facing the screws 6 and 8 so as not to interfere with the heads of these screws 6 and 8.

An opening 22a is formed in the shield member 22 on the lower case 2 side at a position corresponding to the opening 10. 1 and 2, the shield member 1
The cross sections of 2 and 22 are shown by thick solid lines, and the openings 22a in the cross sections are shown by thick dashed lines. The opening 22a of the shield member 22 and the opening 10 of the lower case 2 are shown in FIG.
Although it is closed by the lid 10A shown in FIG. 2, the hand can be inserted from the bottom side of the lower case 2 to the lower circuit board 21 side through the openings 10 and 22a by removing the lid 10A. As shown in FIG. 4, a step 10a for receiving the peripheral edge of the lid 10A is formed on the peripheral edge of the opening 10,
The lid 10A is screwed to the lower case 2 at the position of the step 10a.

FIG. 5 shows the standing piece 121 of the shield member 12.
It is a perspective view which shows the vicinity of. The standing piece 121 of the shield member 12 is formed by cutting and raising a part of the flange 12a, and the shield member 22 on the lower case 2 side is raised by cutting and raising the flange 22a and the side surface portion. A cutout portion 221 that accommodates the installation piece 121 is formed. As a result, as shown by the alternate long and short dash line in FIG.
When the shield members 12 and 22 are opposed to each other (when assembled), a gap S is formed on a part of the flange 22 a of the shield member 22 outside the upright piece 121. The connection cable 13 and the contact terminal portion 13a held by the upright piece 121 are arranged in this gap S, and the connection cable 1
Part 3 and the contact terminal portion 13a are exposed to the lower circuit board 21 side near the connector 21a.

The band 121a for fixing the connection cable 13 to the standing piece 121 is, for example, a fastening band used for gathering cables of electrical appliances and the like and which does not return after fastening, and the connection cable 13 is set upright. Piece 121
It is fastened with appropriate force. In addition, FIG.
As shown in FIG. 5, the connection cable 13 is arranged on the upper case 1 side with some slack. Therefore, by pulling the connection cable 13, the connection cable 1
3 can be pulled out from the standing piece 121 to the lower circuit board 21 side, and its contact terminal portion 13a can be inserted and connected to the connector 21a.

FIG. 6 is a perspective view showing the vicinity of the second opening 20 as viewed from the lower case 2 side, and this second opening 20 is shown.
Inside, an upper circuit board (upper case mounting member) 11 'mounted on the upper case 1 and a lower circuit board (lower case mounting member) 21' mounted on the lower case 2 are provided. There is. A connection cable (connection member) 13 'is connected to the upper circuit board 11'.
A female connector 13a 'is attached to the other end of 3'. Further, a holder (connection auxiliary member) 111 formed of an elastic member such as rubber or plastic is attached to the upper circuit board 11 ', and the connection cable 13' is attached.
Are sandwiched and held by the holder 111. Further, a male connector (connecting member) for fittingly connecting the female connector 13a 'of the connection cable 13' to the lower circuit board 21 'for electrical connection with the upper circuit board 11'.
21a 'is attached. The opening 20
The shield members 12 and 22 are also provided inside of the upper circuit board 11 'and the lower circuit board 2 as well.
1'is housed in the shield members 12 and 22.

As described above, in the connection cable 13 'held by the holder 111, the female connector 13a' is the second one.
Is exposed to the lower circuit board 21 'side in the vicinity of the opening 20 and the male connector 21a', and this female connector 13a 'can be fitted and connected to the male connector 21a' of the lower circuit board 21 '. . The holder 111 holds the connection cable 13 'with an appropriate force, and by pulling the connection cable 13', the pull-out length can be adjusted as appropriate to facilitate connection.

As described above, according to the electronic musical instrument of this embodiment, in the electronic device in which the upper case 1 and the lower case 2 are tied together to form the case body, the upper case 1 has the same structure. The upper circuit circuit board 11 (11 ') (upper case mounting member) that is mounted and requires electrical supply;
The lower circuit board 21 (21 ′) (lower case mounting member) mounted on the lower case 2 and requiring electrical supply and the upper circuit board 11 (11 ′) are provided on the lower circuit board 21 (2 ′).
1 ') connection cable 13 (1) for electrical connection to
3 ') (connecting member) and a connector 21a (male connector 21a') (connecting member) provided on the lower circuit board 21 (21 ') and electrically connected to the upper circuit board 11 (11'). An opening 10 (20) opened near at least one of the upper case 1 and the lower case 2 near the connector 21a (male connector 21a ') on the case side.
And tie the upper case 1 and the lower case 2 together by tying them together, and then connect the connector 21a (male connector 21a ') of the upper case 1 and the connection cable 13 (13') of the lower case 2 through the opening 10 (20). It is designed to be electrically connected to and.

In addition, according to the second aspect, the standing piece 121 (holder) for assisting the coupling work of the connection cable 13 (13 ') and the connector 21a (male connector 21a') (both connecting members) is further provided. 111) (connecting auxiliary member), the standing piece 121 (holder 111) is provided with the opening 10
(20) The connection cable 13 (13 ') of the upper case 1 whose opening is not opened in the vicinity is held, and the opening 10 is formed after the upper case 1 and the lower case 2 are tied together. From (20) via the standing piece 121 (holder 111), the connector 21a (male connector 21a ') of the upper case 1 and the connection cable 13 of the lower case 2 are connected.
(13 ') is electrically connected.

With the above construction, when assembling the electronic musical instrument, the upper case 1 side and the lower case 2 side are respectively assembled, and the upper case 1 side is turned upside down and placed on a work table or the like, and the lower case 2 is placed thereon. Cover the side. The lid 1 of the lower case 2
0A and 20A are removed. Next, put a hand inside the opening 10 of the lower case 2 or inside the case, pull out the connection cable 13 held by the standing piece 121, and insert and connect the contact terminal portion 13a thereof into the connector 21a of the lower circuit board 21. To do. Also, put your hands through the opening 20 into the case,
The female connector 13a 'of the connection cable 13' is fitted and connected to the male connector 21a 'of the lower circuit board 21'. Then, the lid 10A is fitted in the first opening 10 and screwed, the lid 20A is fitted in the second opening 20 and screwed, and further, the lower case 2 is screwed to the upper case 1.
Therefore, when the lower case 2 is moved, the connection cable 13,
Since the lower case 2 can be placed on the upper case 1 without having to worry about the presence of 13 ', the assembling work becomes extremely easy. Further, when disassembling, the electronic musical instrument is turned upside down and placed on a workbench or the like, and the lower case 2 to the lid 1
Since the lower case 2 may be removed from the upper case 1 after removing the connecting cables 13 and 13 'by removing 0A and 20A, the disassembling work becomes very easy.

The lower circuit board 11 and the lower circuit board 1
The reference numeral 1'and the upper circuit board 21 'are circuit boards for high-frequency electronic equipment equipped with a microcomputer or the like.
Since these circuit boards are housed in the shield members 12 and 22, it is possible to prevent radio wave leakage of high frequency waves from these circuit boards. In addition, both shield members 12, 2
Although there is a gap between the two flanges 12a and 22a, since the flanges 12a and 22a have a certain width, leakage of high-frequency radio waves with little diffraction hardly occurs. Furthermore, the shield members 12 and 22 can be separately attached to the upper case 1 and the lower case 2, respectively.
Simultaneously with the assembling work of the lower case 2 and the lower case 2, both the shield members 12 and 22 can wrap the substrate, so that the assembling work becomes easy.

In the above embodiment, the connection cable 13 near the first opening 10 is the contact terminal portion 13a with the conductive member exposed at the end, but a connector may be attached. Needless to say. Also,
The connection cables 13 and 13 'as connection members may have any form such as a flat cable, a linear cable, or another cable.

Further, the band 121 is different from the standing piece 121.
Although the connecting cable 13 is held by a, for example, as shown in FIG. 7 (A), a standing piece 121 'having a C-shaped horizontal section (longitudinal length) is used, and the width direction of the connecting cable 13 (flat cable) is used. Using the elasticity of the
The connection cable 13 may be held by arranging the connection cable 13 so that the connection cable 13 is fitted in the a '. Also, FIG. 7 (B)
In the case of using the linear connecting cable 13 ″ as shown in FIG. 3, use the standing piece 121 ″ having a C-shaped horizontal cross section so that the connecting cable 13 ″ is fitted and held in the groove. Further, a U-shaped cross section may be used as well.

Further, in the embodiment, the upper circuit board mounted on the upper case as an upper case mounting member requiring electrical supply is an upper circuit board, and the lower case mounted on the lower case as a lower case mounting member requiring electrical supply is a lower circuit. Although the example applied to the board has been described, the upper case mounting member and the lower case mounting member may be other built-in electric devices such as a hard disk device and a CD-R device. That is, it goes without saying that the invention can also be applied to a structure in which these devices are connected to the circuit board.

Further, although the embodiment has been described by taking the electronic keyboard instrument as an example, it goes without saying that the present invention can be applied to various other electronic devices.

[0033]

According to the electronic device of the first aspect of the present invention, since the connecting member such as the connector can be connected and disconnected through the opening, it is good to connect through the opening when assembling the upper case and the lower case. However, at the time of disassembly, the upper case and lower case can be separated after removing the connecting member through the opening, so the length of the connecting cable, etc. can be minimized, and the assembly work and repair and inspection work are extremely difficult. It will be easier.

According to the electronic device of the second aspect, the same effect as that of the first aspect can be obtained, and the connection member held by the connection auxiliary member is arranged in the vicinity of the other connection member.
Both connecting members to be connected can be easily checked, and the assembling work is further facilitated, and the connection assisting member can hold the separated connecting member even at the time of disassembly, which facilitates the work. .

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which an upper case and a lower case are separated in a keyboard type electronic musical instrument of an embodiment of the present invention together with its schematic structure.

FIG. 2 is a cross-sectional view showing an assembled state of an upper case and a lower case in the keyboard electronic musical instrument of the embodiment of the present invention together with its schematic structure.

FIG. 3 is a perspective view of essential parts of the keyboard-type electronic musical instrument of the embodiment of the present invention.

FIG. 4 is a sectional view taken along the line BB of FIG.

FIG. 5 is a perspective view showing the vicinity of the standing piece of the shield member in the embodiment of the present invention.

FIG. 6 is a perspective view showing the vicinity of a second opening viewed from the lower case side according to the embodiment of the present invention.

FIG. 7 is a diagram illustrating another example of the standing piece in the embodiment of the present invention.

[Explanation of symbols]

1 ... Upper case, 2 ... Lower case, 10 ... First opening, 2
0 ... Second opening, 11, 11 '... Upper circuit board (upper case attachment member), 13, 13' ... Connection cable (connection member), 121 ... Standing piece (connection auxiliary member), 21, 21 '
... Lower circuit board (lower case mounting member), 21a ... Connector (connecting member), 21a '... Male connector (connecting member)

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4E360 AB02 AB12 AB17 AB20 BA02                       BA08 BC05 BD03 EA12 EA18                       EA27 ED17 ED27 GA47 GA53                       GB11                 5D378 EE01 SA10 SA12                 5E348 AA03 AA05 AA07 AA30 CC08                       CC09 CC10 EF03 EF04 EF12                       EF16

Claims (2)

[Claims] 1. An electronic device in which an upper case and a lower case are bound together to form a case body, and an upper case mounting member, which is mounted on the upper case and requires electrical supply, and which is mounted on the lower case. A lower case mounting member that needs to be electrically supplied, a connection member provided on the upper case mounting member and electrically connected to the lower case mounting member, and a connection member provided on the lower case mounting member and the upper case. A connecting member for making an electrical connection to a mounting member; and an opening opened in the vicinity of the connecting member on the case side in at least one of the upper case and the lower case. An electronic device, characterized in that after connecting the cases together, the connecting member of the upper case and the connecting member of the lower case are electrically connected from the opening. 2. An electronic device in which an upper case and a lower case are bound together to form a case body, and an upper case mounting member, which is mounted on the upper case and requires electrical supply, and which is mounted on the lower case. A lower case mounting member that needs to be electrically supplied, a connection member provided on the upper case mounting member and electrically connected to the lower case mounting member, and a connection member provided on the lower case mounting member and the upper case. A connection member for making an electrical connection to a mounting member, a connection auxiliary member for assisting a coupling operation of the both connection members, and a connection member on the case side in at least one of the upper case and the lower case. An opening opened in the vicinity, and the connection auxiliary member holds the connection member of the case, and after connecting the upper case and the lower case together, Via the connection supporting member from the mouth, the electronic device, characterized in that the connection member of the connection member and the lower case of the upper case so as to electrically connect.