JPH0125987Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] This invention is a keyboard instrument casing that allows easy installation of a keyboard, maintenance, inspection, and replacement of electrical parts such as switches, and is convenient for storing writing instruments, etc. Regarding body structure.

[Prior art]

Keyboard instruments such as general pianos, electronic organs, keyboards, music synthesizers, etc. are equipped with a large number of keys, and the front end of the keys is protected by a mouth bar. In this case, in the case of a piano, the mouth bar is fixed to the front end of the upper surface of the shelf, and in the case of an electronic keyboard instrument such as a keyboard, the mouth bar is formed on the front surface of the instrument body integrally formed of plastic or the like. Further, the mouth bar has the function of receiving the front end of a lid that is openable and closable on the main body of the musical instrument and protects the keyboard section.

However, since the conventional opening bar is provided so as to protrude upward from the surface on which the key is installed, the opening bar gets in the way when installing the key, making it impossible to horizontally move it from the front to the rear and install it diagonally upward. It was necessary to assemble it in a tilted state, which made the assembling work troublesome. Furthermore, since electronic keyboard instruments generally have a key switch located below the keys, the arrangement, maintenance, inspection, etc. of the key switch are as troublesome as in the case of keys.

[Summary of the idea]

This idea was made in view of the above-mentioned points, and it is possible to solve the above-mentioned disadvantages with an extremely simple structure in which the mouth bar is provided so that it can be opened and closed freely, and when opened, it functions as a receptacle for writing instruments, etc. The present invention provides a keyboard instrument that can also be provided with the following functions.

This invention will be described in detail below based on embodiments shown in the drawings.

〔Example〕

Figures 1 to 4 show an embodiment of this invention applied to a keyboard, with Figure 1 being a perspective view of the exterior when the lid is opened, Figure 2 being an enlarged sectional view taken along the line of Figure 1;
FIG. 3 is a sectional side view of the main part with the lid closed, and FIG. 4 is a diagram showing the music stand housed in the lid. 1st
In Figures to Figure 3, the keyboard, which is designated as a whole by reference numeral 1, has a shallow box-shaped musical instrument body 2 that is long in the left-right direction and is formed by integrally combining an upper case 2A and a lower case 2B, and a musical instrument body 2, respectively. It includes a mouth bar 20 and a lid body 30 that are arranged to be openable and closable, and together form a musical instrument housing.

Both ends of the musical instrument main body 2 form speaker storage sections 3A and 3B, respectively, and these storage sections 3A and 3
A plurality of fins 4 and a speaker slit 5 are formed on the upper surface of B. Further, the front half and front end of the upper surface of the musical instrument main body 2 are open between the two speaker storage sections 3A and 3B, and a pair of left and right clapboards 6a, 6b and a large number of white keys 7 are located in this open section.
A keyboard section 8 is formed by disposing a keyboard 7 consisting of keys 7a and 7b.

Each of the white keys 7a (same as the black keys 7b) has a protrusion 9 integrally provided on the rear end surface as shown in FIG.
By inserting and engaging into the hole 11 of the keyboard frame 10, the keyboard frame 10 is arranged so as to be freely rotatable in the vertical direction, and is always given a clockwise return habit by the spring 12. In addition, each white key 7a
is integrally equipped with an actuator 13 and a substantially hook-shaped stopper 14 vertically disposed on its lower surface, and by engaging the tip of this stopper 14 into another hole 15 formed in the keyboard frame 10, the keyboard frame 10 can be moved vertically. It is allowed to rotate by a small angle and is normally held almost horizontally, and when a key is pressed, it rotates downward in the counterclockwise direction in FIG. 2 against the spring 12, and the actuator 13 moves toward the keyboard frame. The key switch 16 attached to the back side of the key 10 is operated to electrically generate a musical tone corresponding to the key 7a.

The mouth bar 20, which characterizes this invention, is disposed on the front end surface of the keyboard section 8 so as to be openable and closable, and is formed in a substantially inverted L shape, so that the vertical portion 20a
and a horizontal portion 20b, the lower end of which is connected to the shaft 2 on the inner surface of the front end portion of the speaker storage portions 3A, 3B.
2, and when the keyboard 1 is stored or transported, it is closed as shown by the solid line in FIG. At the same time, the lid body 30 is held when the lid is closed, and the shaft 22 is held when playing.
The lower case 2B is opened approximately 270 degrees counterclockwise with the center of rotation as shown by the dashed line 23 in FIG.
It is configured to be stored along the lower surface 25 of the front end. In this case, if it is placed on its back in front of the instrument body 2 as shown by the two-dot chain line 26 in the figure, it can be used as a container for small items such as pencils and erasers, which is convenient when composing music.

The lid 30 is formed into a hollow plate shape and is disposed at the rear end of the upper surface of the musical instrument main body 2 so as to be openable and closable in the vertical direction. Various electrical components 32 such as a tone selection switch 32a and a volume adjustment slide volume 32b.
The operation panel 31 is formed by arranging a large number of . Further, a printed circuit board 33 on which a musical tone forming circuit, a control circuit, etc. are printed and wired is disposed inside the lid body 30.
3 and the electrical component 33 and the key switch 16
are electrically connected. The shaft 35 of the lid body 30 is formed hollow, and has a cord therein for connecting the printed circuit board 33 and the key switch 16, and a cord for connecting the printed circuit board 33 and an external terminal (not shown) of the musical instrument main body 2. Various types of cords 37 (see FIG. 3) such as cords 37 (see FIG. 3) are wired and led out into the instrument body 2 through an opening at one end. Therefore, there is no need to provide a cord insertion hole in the lid 30 itself, and the cord 37 does not move up and down when opening and closing, making it possible to prevent connection failures, disconnections, etc.

The rear end (lower end side when the lid is opened) of the lid 30 is inserted into a substantially semicircular recess 38 formed at the rear end of the upper surface of the upper case 2A, and both ends of the shaft 35 are By being rotatably supported by bearing holes (not shown) formed in the left and right side walls of the recess 38 that face each other, the surface of the lid 30 is rotated as shown in FIG. 2 during performance. The operation panel 31 is set and held at an angle that is most easily viewed by being opened until the lower end abuts against the upper edge 38a of the rear end of the recess 38, and when the lid is closed, it abuts against the mouth bar 20 as shown in FIG. It is configured to cover the keyboard section 8.

Furthermore, a storage recess 51 for storing a music stand 50 and a music tray 52 are provided at the center of the front end surface of the lid body 30. As shown in FIG. 1, the music stand 50 is formed by connecting a plurality of connecting bars in a Japanese-shape shape with pins, and is disposed horizontally on the inner bottom surface of the storage recess 51, so that when the lid is closed, the music stand 50 is arranged horizontally on the inner bottom surface of the storage recess 51. It is configured to be folded in the direction of arrow A in the figure and completely stored in the storage recess 51 (see FIG. 4).

The music tray 52 is disposed on the inner edge of the front end surface of the lid body 30 via a hinge 54 so as to be openable and closable, and a music sheet 55 is placed against the music tray 52 and the music stand 50. When the storage recess 51 is stored, the storage recess 51 is covered.

Thus, keyboard 1 having such a configuration
According to the above, since the opening rod 20 is arranged to be openable and closable, if the opening rod 20 is left open when the keyboard 7 is assembled, the keyboard 7 can be horizontally moved from the front to the rear along the upper surface of the keyboard frame 10. It is possible to assemble the device while it is in progress, making the assembling process easier.
Further, in this embodiment, an example is shown in which the key switch 16 is disposed on the lower surface of the keyboard frame 10, but if the key switch 16 is disposed on the upper surface of the frame 10 corresponding to the lower surface of the front end of the keyboard 7, for example, You can maintain the key switch by simply opening the rod 20 without removing the keyboard 7.
Inspections can be made, particularly the distance between the keyboard 7 and the key switch 16 in the initial position, and more accurate adjustments can be made.

Further, the opening bar 20 protects the keyboard 7 together with the lid body 30 when the keyboard 1 is stored, and when opened during playing, it also functions as a storage for small items such as writing instruments, thereby preventing the writing instruments from rolling or falling. .

Although the above embodiment has been described for the case where it is applied to a keyboard, this invention is not limited to this, and can be applied to all keyboard instruments that have a large number of keys and whose front side is protected by a mouth bar. It's something you get.

Further, in the embodiment described above, the mouth bar 20 is formed into a substantially inverted L shape, but the shape itself is not specified at all, and may be in an inverted J shape, for example.

[Effect of idea]

As explained above, the casing structure of the keyboard instrument according to this invention has a mouth bar that can be opened and closed on the front of the instrument body, which protects the front of the keys by closing it when stored, and a lid that covers the keyboard part. It is configured to receive the front end of the instrument and open toward the front of the instrument body when playing, so it is easy to install and remove keys, install electrical parts such as key switches, and perform maintenance, inspection, and adjustment work. In addition, when opened, the mouthpiece can be used as a container for small items such as writing instruments, and its practical effects are extremely large.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of this invention applied to a keyboard, with Figure 1 being a perspective view of the exterior when the lid is opened, Figure 2 being an enlarged sectional view taken along the line of Figure 1;
FIG. 3 is a sectional side view of the main part with the lid closed, and FIG. 4 is a diagram showing the music stand housed in the lid. DESCRIPTION OF SYMBOLS 1...keyboard, 2...musical instrument body, 7...keyboard, 8...keyboard part, 20...mouth bar, 30...lid body, 31...operation panel, 32...electrical parts, 3
5...Rotation axis, 37...Cord, 38...Recess.

Claims (1)

[Scope of utility model registration request] a musical instrument body having a keyboard section having a plurality of keys arranged; a lid body disposed on the musical instrument body so as to be openable and closable and covering the keyboard section when the lid is closed; and a lid body located just in front of the keys. It is arranged so that it can be opened and closed freely against the
A casing structure for a keyboard instrument, comprising a mouth bar that opens in front of the keyboard part during performance, protects the front surface of the keys when stored, and receives the front end of the lid body.