JP2005195918A - Electronic musical instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic musical instrument which is operability and can be easily assembled. <P>SOLUTION: The electronic musical instrument is configured by providing an upper case 10a constituting an electronic keyboard device 10 with an aperture 16a thereon, providing the interior of the upper case 10a with a memory medium read/write device 20 in the state of exposing a slot 21 to the surface through the aperture 16a and fixing a circuit board 28 which transmits and receives a signal between itself and the memory medium read/write device 20 to the upper case 10a by using screws 27a and 27b together with the memory medium read/write device 20. Also, the upper case 10a has a projecting part 19 provided with a hole part 19a and the screws 27a and 27b are screwed into the hole part 19a of the projecting part 19, thereby fixing the memory medium read/write device 20 and the circuit board 28 to the upper case 10a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electronic musical instrument provided with a storage medium read / write device.

2. Description of the Related Art Conventionally, some electronic musical instruments, for example, automatic performance pianos, include a storage medium read / write device for storing performance information in a storage medium and a circuit board that transmits and receives signals between the storage medium read / write device. (For example, refer to Patent Document 1). In such an electronic musical instrument, the main body portion of the storage medium read / write device is molded integrally with the case constituting the main body of the electronic musical instrument, or is fixed to the case with screws. The circuit board is fixed to the case by screws separately from the storage medium read / write device.
Japanese Utility Model Publication No. 5-71893

  However, in the conventional electronic musical instrument described above, if the main body of the storage medium read / write device is molded integrally with the case, the structure of the panel is limited due to the mold opening direction of the molding die. There is a problem that the position and direction of the storage medium read / write device cannot be freely set. For this reason, electronic musical instruments tend to be inconvenient for the performer. For example, when the storage medium insertion port of the electronic musical instrument faces upward, there is a problem that dust enters the storage medium read / write device from the insertion port.

  In addition, if the case and the main body of the storage medium read / write device are configured as separate members in order to install the storage medium read / write device in a convenient location, the number of parts increases and the assembly process increases. There is a problem that the position adjustment work increases, the time required for assembly becomes long, and the work becomes troublesome. In addition, there is a problem that a connection cable for connecting the storage medium read / write device and the circuit board becomes long or difficult to arrange.

  The present invention has been made to address the above-described problems, and an object of the present invention is to provide an electronic musical instrument that is easy to use and easy to assemble.

  In order to achieve the above-described object, the configuration of the electronic musical instrument according to the present invention includes a storage medium read / write device having a recording medium insertion port, an opening, and the storage medium insertion port from the opening to the surface. A panel member to which the storage medium read / write device can be attached in an exposed state, and a circuit board that transmits and receives signals between the storage medium read / write device and at least one of the storage medium read / write device and the circuit board. The portion is fixed to the panel member using a common screw.

  In the electronic musical instrument of the present invention configured as described above, the member constituting the main body portion of the storage medium read / write device is configured separately from the panel member, and the storage medium read / write device and the circuit board are used using a common screw, It is fixed to the panel member. Therefore, the degree of freedom increases in the shape of the main body portion of the storage medium read / write device, the attachment position to the panel member, the attachment direction, and the like, and the formability of each member is improved, and the electronic musical instrument is formed in a convenient structure. be able to. Further, a small amount of screws for fixing the storage medium read / write device and the circuit board are required, and the assembling work is facilitated. Here, the main body portion of the storage medium read / write device is a member constituting the outer portion or the base portion.

  In this case, the same screw is used so that there is at least one portion where the storage medium read / write device and the circuit board are fixed to a predetermined portion of the panel member. According to this, only the part that can be fixed with the common screw of the storage medium read / write device and the circuit board is fixed with that screw, and the other parts that need to be fixed are fixed with other screws, etc. It is not necessary to form the storage medium read / write device and the circuit board in accordance with the shape of the other party. For this reason, the storage medium read / write device and the circuit board can be formed in shapes corresponding to the respective functions and the like.

  Another structural feature of the electronic musical instrument according to the present invention is that the storage member read / write device and the circuit board are fixed to the panel member by providing a mounting base on the panel member and screwing the screw to the mounting base. There is. This makes it easy to assemble an electronic musical instrument into a unit. In this case, it is preferable that the mounting base is constituted by a cylindrical protrusion formed by integral molding with the panel member, and a step portion for locking the screw is provided inside. As a result, an increase in the number of components can be prevented, and the dimensional accuracy of the circuit board mounting position can be improved. Further, the position adjustment becomes easy and the assembling work becomes easy.

  Hereinafter, an electronic musical instrument according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an electronic keyboard device 10 as an electronic musical instrument according to the embodiment. A keyboard 11 composed of a plurality of white keys 11a and black keys 11b is installed on the front side (performer side) of the upper surface of the electronic keyboard device 10, and a rear panel unit 12 is formed in the central part on the rear side. Has been. Speakers 13 a and 13 b are provided on both sides of the rear part of the electronic keyboard device 10.

  That is, the device body of the electronic keyboard device 10 is composed of an upper case 10a and a lower case 10b as panel members of the present invention. The upper case 10a is formed with a large opening 14a for exposing the keyboard 11 at the front, and openings 14b and 14c for spreading the sound generated by the speakers 13a and 13b on both sides of the rear without being shielded. It is comprised with the frame in which was formed. A net member is attached to the openings 14b and 14c. A window portion 14d is provided at the center of the rear panel portion 12 formed at the center of the rear portion of the upper case 10a. And the display panel 12a is installed in the window part 14d of the rear panel part 12, and various operation elements 12b, a switch 12c, etc. are provided in the both sides. The upper case 10a and the lower case 10b are each formed by integrally molding a resin material.

  In addition, a music stand 15 is provided in an upright state at the center of the rear end of the upper surface of the electronic keyboard device 10. And the rear part side part of the opening part 14a in the upper case 10a is formed in the inclined surface 16 which the back side became high, and the opening part 16a which concerns on this invention is formed in the right side part from the center in the inclined surface 16 slightly. . The storage medium read / write device 20 is installed in the opening 16a with the insertion port 21 exposed on the surface. The insertion slot 21 is an opening for inserting a storage medium made of a card such as smart media (not shown) into the storage medium read / write device 20.

  As shown in FIG. 2, a keyboard 11 is installed on the front of the upper surface of the lower case 10b (inside the electronic keyboard device 10), and speakers 13a and 13b are installed on both sides of the rear. And the frame-shaped rib part 17 which protruded upwards in the rear side part in the upper surface of the lower case 10b was formed in the grid | lattice form, and the boss which comprises the attachment base which concerns on this invention along the frame-shaped rib part 17 Shaped protrusions 18 are formed at predetermined intervals.

  Each protrusion 18 is formed in a tapered cylindrical shape, and a step (not shown) for locking a screw is formed therein. Moreover, the hole 18a for engaging a screw is formed in the front end side part of each protrusion 18, respectively. As shown in FIG. 3, a hole 19a for engaging a screw is also provided on the lower surface of the upper case 10a (FIG. 3 shows a state in which the upper case 10a is turned upside down). The cylindrical boss-shaped protrusions 19 are provided at predetermined intervals. And as shown in FIG. 4, the engaging parts 17a and 17b which consist of a protrusion are formed in the both sides of the opening part 16a in the inclined surface 16. As shown in FIG.

  The storage medium read / write device 20 is configured as shown in FIG. 5, and includes a main body 22 having an insertion port 21 and a circuit board 23. The main body 22 is configured by molding a resin material, and includes an insertion portion 24 located in the center and attachment portions 25 and 26 provided integrally on both sides of the insertion portion 24. The insertion portion 24 includes a bottom surface portion 24a, a substantially vertical surface portion 24b extending upward from the rear edge of the bottom surface portion 24a, and substantially triangular side surfaces 24c and 24d positioned on both sides of the bottom surface portion 24a and the substantially vertical surface portion 24b. It consists of And the front surface of the insertion part 24 is formed in the frame-shaped inclined surface along the inclined surface 16 of the upper case 10a, The center part is a recessed part.

  The insertion port 21 is configured by a horizontally long slit provided horizontally penetrating from the center of the front surface at the inner surface side portions of the side surface portions 24c and 24d facing toward the rear surface of the substantially vertical surface portion 24b. As shown in FIG. 6, a support plate portion 24 e for guiding the storage medium inserted into the insertion port 21 is formed along the lower edge of the insertion port 21 on the rear surface of the insertion unit 24. Yes.

  The attachment portion 25 has an overall shape of a substantially rectangular parallelepiped, a recess 25a is formed at the insertion portion 24 side portion in the front upper portion, and a protrusion 25b is formed in the outer portion at the rear upper portion. And the screw hole 25c penetrated up and down is formed in the center of the recessed part 25a, and the screw hole 25d penetrated up and down is formed in the center of the convex part 25b. Further, a positioning projection 25e and a screw hole 25f are formed side by side on the insertion portion 24 side portion on the upper surface of the attachment portion 25, and a positioning piece 25g extending vertically is formed on a substantially central portion on the front surface of the attachment portion 25. Is formed to protrude to the front side.

  The attachment portion 26 is formed in a shape in which the attachment portion 25 is symmetric and the length in the left-right direction is slightly shortened. The attachment portion 25 is provided with a recess 26a and a protrusion at positions corresponding to the respective portions of the attachment portion 25. 26b, screw holes 26c, 26d, positioning projections 26e, screw holes 26f, and positioning pieces 26g (provided on the outer portion of the front surface of the mounting portion 26) are formed. Respective screw holes 25c, 26c and the like provided in the attachment portions 25, 26 are formed so as to face the protrusion 19 when the main body 22 is assembled to the upper case 10a.

  The engaging portions 17a and 17b are provided at the mounting position of the storage medium read / write device 20 in the upper case 10a, and can be engaged with the positioning pieces 25g and 26g. Therefore, the assembly of the main body 22 to the upper case 10a is performed by engaging the positioning pieces 25g and 26g with the engaging portions 17a and 17b of the upper case 10a from the state shown in FIG. The same screws as 27a and 27b can be engaged with the corresponding screw holes 25c and 26c etc. and the hole 19a of the protrusion 19, respectively. FIG. 3 shows a state in which the storage medium read / write device 20 is attached to the upper case 10a.

  The circuit board 23 is composed of a board provided with a reading sensor for reading information of a storage medium inserted from the insertion port 21 of the main body 22, and a positioning hole that can be engaged with the protrusions 25e and 26e. Two screw holes 23c (one screw hole is not shown) formed so as to face 23a, 23b and screw holes 25f, 26f are provided. The circuit board 23 engages the holes 23a with the protrusions 25e, engages the holes 23b with the protrusions 26e, and aligns the screw holes 23c corresponding to the screw holes 25f and 26f, respectively. It is attached to the main body 22 by fixing with. In this case, the screws 27c and 27d are also engaged with the corresponding holes 19a of the protrusions 19, and the circuit board 23 as well as the main body 22 is fixed to the upper case 10a.

  The circuit board 23 is provided with connection terminals 23d. Above the circuit board 23, a circuit board 28 and a circuit board 29 according to the present invention for transmitting and receiving signals to and from the storage medium read / write device 20 are installed. The circuit boards 28 and 29 perform signal processing of the display panel 12a installed in the rear panel unit 12, various operators 12b, switches 12c, and the like. Further, screw holes 28a and 28b and screw holes 29a and 29b penetrating vertically are formed on both side portions of the front portion of the circuit boards 28 and 29, respectively. Further, the circuit board 29 is provided with a connection terminal 29 c that can be connected to the connection terminal 23 d of the circuit board 23.

  The front end portion of the circuit board 28 engages the screw 27a with the screw hole 28a and the screw hole 25d, and engages the screw 27b with the screw hole 28b and the screw hole 26d. It is fixed. The screws 27 a and 27 b also engage with the corresponding holes 19 a of the protrusions 19 to fix the circuit board 28 together with the storage medium read / write device 20 to the upper case 10 a. Further, a screw hole (not shown) is also provided in the rear side portion of the circuit board 28, and the rear side portion of the circuit board 28 is fixed to the corresponding protrusion 19 through the screw hole. . The circuit board 29 is also fixed to the corresponding protrusion 19 of the upper case 10a via a predetermined screw.

  The lower case 10b is provided with a circuit board (not shown) that constitutes a main control circuit, a sound source circuit, an input / output circuit, and the like. A screw hole is provided in a predetermined portion of the circuit board and is fixed to the corresponding protrusion 18 with a screw. In addition, the circuit board 23 and the like are provided with connection terminals similar to the connection terminals 23d and 29c, respectively, and the predetermined circuit board 23 and the like are connected to connection terminals of other circuit boards via connection cables. They are connected to each other by connecting. The upper case 10a and the lower case 10b are also fixed to each other by engaging screws in the holes 18a and 19a of the predetermined protrusions 18 and 19. In this case, predetermined members are respectively attached to the upper case 10a and the lower case 10b, and the case 10a and the lower case 10b in this state are fixed with screws.

  In this configuration, when the electronic keyboard device 10 is played, the power switch is turned on to operate the various operators 12b and the switch 12c, and the white key 11a and the black key 11b of the keyboard 11 are sequentially pressed. By doing this, you can sound musical sounds such as melodies and accompaniments. At that time, by inserting a storage medium storing various types of information from the insertion slot 21 and reading the information with the circuit board 23, the display panel 12a displays notes and lyrics based on the information. Can do. Therefore, the performer can perform while looking at the display panel 12a or performing while singing a song.

  As described above, in the electronic keyboard device 10 according to the present embodiment, the main body 22 of the storage medium read / write device 20 is configured separately from the upper case 10a, and the storage medium read / write device 20 and the circuit board 28 are used with screws 27a and 27b. And fixed to the upper case 10a. Therefore, a small amount of screws is required, and the assembling work of the storage medium read / write device 20 to the upper case 10a is facilitated. Further, since the main body 22 is arranged so that the insertion slot 21 is in the horizontal direction, dust or the like does not collect in the insertion slot 21 and the storage medium can be easily inserted and removed.

  In addition, since the main body 22 is molded separately from the upper case 10a, the molding becomes easy even if it is set to a complicated structure. Further, since the storage medium read / write device 20 and the circuit board 28 are fixed to the upper case 10a only by using the common screws 27a and 27b, only the front end portion of the circuit board 28 is used. It is not necessary to form the circuit board 28 and the circuit board 28 in accordance with the shape of the other party, and the storage medium read / write device 20 and the circuit board 28 can be shaped according to their functions.

  Further, in the electronic keyboard device 10 according to the present embodiment, the upper case 10a is provided with the protrusion 19 provided with the hole 19a, and the lower case 10b is provided with the protrusion 18 provided with the hole 18a. , 19 are engaged with screws 27a, 27b and the like to fix the members together. For this reason, it becomes easy to assemble the electronic keyboard device 10 as a unit. In addition, this improves the dimensional accuracy of the mounting position of each member, facilitates position adjustment, and enables accurate assembly. Furthermore, since the projections 18 and 19 are provided with stepped portions for locking the screws, the screws 27a and 27b and the like can be inserted deep into the projections 18 and 19, and the screws 27a and 27 The length such as 27b can be set short. Thereby, the attachment strength between each member becomes strong.

  Further, the present invention is not limited to the above-described embodiment, and can be modified as appropriate. For example, in the above-described embodiment, the circuit board 23 and the circuit board 28 are fixed to the main body 22 of the storage medium read / write device 20 using screws 27a and 27b. The circuit board can be fixed to the main body 22 using the screw holes 25c and 26c. Further, the storage medium read / write device can be enlarged so that another circuit board can be attached to the upper case together, or the entire circuit board can be fixed.

In the above-described embodiment, the storage medium read / write device 20 is fixed to the upper case 10a. However, the storage medium read / write device 20 may be fixed to the lower case 10b. Furthermore, a fixing portion of each member may be sandwiched between a head and a nut such as the screws 27a and 27b using nuts that can be screwed into the screws 27a and 27b. Further, the protrusions 18 and 19 are not limited to a cylindrical shape, and may be configured by a flat base portion or the like. Furthermore, in the above-described embodiment, the electronic musical instrument is the electronic keyboard device 10, but the electronic musical instrument according to the present invention is not limited thereto, and may be an electronic musical instrument provided with a storage medium read / write device and a circuit board. .

It is a perspective view which shows the electronic keyboard apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows the upper surface of a lower case. It is a perspective view which shows the lower surface of an upper case. It is the schematic which shows the state which attaches a storage-medium reading / writing apparatus to an upper case. It is a perspective view which shows the state which attaches a circuit board to a storage medium reading / writing apparatus. It is the perspective view which shows the state which looked at the main body of the storage medium reading / writing apparatus from back.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Electronic keyboard apparatus, 10a ... Upper case, 10b ... Lower case, 16a ... Opening part, 18, 19 ... Projection part, 18a, 19a ... Hole part, 20 ... Storage medium read / write device, 21 ... Insertion port, 22 ... Main body 23, 28 ... circuit board, 23c, 28a, 28b ... screw hole, 24 ... insertion part, 27a, 27b ... screw.

Claims (2)

A storage medium read / write device having a recording medium insertion slot;
A panel member having an opening, and capable of attaching the storage medium read / write device in a state where the storage medium insertion port is exposed on the surface from the opening;
A circuit board for transmitting and receiving signals to and from the storage medium read / write device,
An electronic musical instrument, wherein at least one portion of the storage medium read / write device and the circuit board is fixed to the panel member using a common screw. 2. The electronic musical instrument according to claim 1, wherein a mounting base is provided on the panel member, and the storage medium read / write device and the circuit board are fixed to the panel member by screwing the screw onto the mounting base.

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