JP2515930Y2 - Electronic keyboard instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to an electronic keyboard instrument equipped with a keyboard such as an electronic piano or a synthesizer.

“Prior Art” The applicant of the present invention has proposed a lid for a keyboard in accordance with “Application No. 63-138722”.

FIG. 4 and FIG. 5 show the structure of the lid proposed previously. The lid proposed previously divides the lid into two parts, the front part and the rear part, rotatably supports the front lid half 1 with respect to the musical instrument body 3 by the lever 4, and the rear end of the rear lid half 2. Is supported by a slide guide mechanism 5 provided inside the musical instrument body 3, and the front lid half 1 is opened so that the rear lid half 2 is housed inside the musical instrument body 3, and the lid is closed. The structure is such that it does not significantly project from the upper surface of 3.

"Problems to be solved by the invention" In the electronic musical instrument using the keyboard lid proposed above, the speaker 6 is provided at the rear half of the lid 2 and the musical instrument body 3 as shown in FIG.
Is arranged at a position between the bottom plate 7 and the bottom plate 7.

The sound emitted from the speaker 6 is emitted to the outside through a sound emission hole 8A (FIG. 6) formed in the front panel 8.

The front panel 8 is a member provided to cover the gap 9 formed between the open lid half 1 and the keyboard 9 so as to cover the inside of the musical instrument body 3 from the front.

The gap between the lower end of the lid half 1 in the open state and the keyboard 9 is small. For this reason, the size of the rising portion of the front panel 8 becomes small, which causes a problem that a large number of sound emitting holes 8A cannot be formed as shown in FIG.
The drawback is that the sound emitted from the sound source cannot be emitted sufficiently forward.

The purpose of this invention is to eliminate this drawback and to propose an electronic keyboard instrument in which the area of the sound output hole can be wide.

"Means for Solving the Problem" According to the present invention, in the electronic keyboard musical instrument having a structure in which the lid is divided into a front portion and a rear portion, the rear lid half is in a state in which the position of the speaker provided in the instrument main body is accommodated in the instrument main body The structure is selected between the body and the ceiling plate of the main body of the musical instrument, and a sound emission hole is formed in the front lid half.

According to the structure of the present invention, the speaker is arranged behind the front lid half in the open state, and as a result, the sound emitted from the speaker is formed by forming the sound emission hole in the front lid half. Can be emitted to the outside.

At this time, especially the front lid half has a larger area than the front panel, so that a large number of sound emission holes can be formed.

Therefore, the sound emitted from the speaker can be effectively extracted to the outside, and a loud instrument sound can be obtained.

"Embodiment" FIGS. 1 and 2 show an embodiment of the present invention. Fourth
The parts corresponding to those in FIG. 5 and FIG. 5 are designated by the same reference numerals, and the duplicate description thereof will be omitted.
The speaker 6 is disposed between the rear lid half 2 and the ceiling plate 11 of the musical instrument body 3 which are housed inside.

For this reason, the slide guide mechanism 5 for guiding the rear end side of the rear lid half 2 is tilted largely backward toward the back of the musical instrument body 3 and the lid half 2 is housed inside the musical instrument body 3. Then, the rear end of the lid half 2 is largely lowered, whereby a storage space for the speaker 6 is obtained between the lid half 2 and the ceiling plate 11.

The speaker 6 is attached to the baffle plate 12 and is arranged between the ceiling plate 11 and the rear lid half 2 in the housed state.
Reference numeral 13 denotes a printed circuit board on which an electronic circuit is mounted.

In this embodiment, the rear lid half 2 is made of a resin plate such as an acrylic plate, an aluminum extruded material 2A is attached to the rear edge of the lid half 2, and rollers 5A are attached to both ends of the extruded material 2A. A case where the slide guide mechanism 5 is configured by engaging the rollers 5A with rails 5B attached to the inner walls on both sides of the musical instrument body 3 and guiding the rollers 5A by the rails 5B is shown.

Further, an aluminum extrusion mold material 2B is attached to the front edge of the lid half body 2 to reinforce the lid half body 2, and a hinge 14 is connected to this extrusion mold material 2B and is connected to the front lid half body 1 through the hinge 14. To do. In this example, the hinge 14 is a resin material in which a linear thin portion is formed, and the flexibility of the thin portion is used as a hinge.

In this example, the front lid half 1 is formed of an extruded aluminum material. This extruded shape member projects downward so as to cover the front end surface of the keyboard 9 when the lid half 1 is in the closed position (Fig. 1), and projects forward when the lid half 1 is in the open position (Fig. 2), A member 1B having a U-shaped cross section is formed integrally with this member. A member with a U-shaped cross section
When 1B is in the closed position (Fig. 1), the outer surface 1C of the bottom portion forming the concave groove formed in a U-shaped cross section is arranged in a position parallel to the keyboard, and the open position (Fig. 2). ), The outer surface 1C of the bottom portion forming the concave groove is turned to a posture in which it faces forward.

The portion forming the surface 1C of the member 1B substantially forms the front lid half 1 and the sound emitting hole 1D is formed in this portion.

The state of formation of the sound output hole 1D is shown in FIG. In this example the surface
A case where a plurality of protrusions 1E are formed in 1C and a sound emission hole 1D is formed between the protrusions 1E is shown. By forming the ridges 1E in this way, the sound emission holes 1D are hard to see, and a design effect that looks good can be obtained.

A screw threaded portion 1F is provided on the extrusion mold material that constitutes the front lid half 1.
The lever 4 is fixed to both sides by screwing a screw 15 shown in FIG.

A bunching metal 16 bent in a U-shape is fitted in the concave groove portion of the extruded mold material forming the lid half body 1 to prevent the concave groove portion from being directly visible when the concave groove portion faces upward. I am trying to do it.

[Advantage of Device] As described above, according to the device of the present invention, since the sound emission hole 1D is formed in the front lid half 1 of the lid which is divided into two and has a two-fold structure, the sound emission hole 1D is formed. Can be formed in large numbers.
That is, the width (vertical width) of the lid half 1 is larger than the width of the vertical portion of the front panel 8 shown in FIG.

Therefore, the area of the sound output hole 1D can be made several times larger than the conventional one. Therefore, the sound of the speaker 6 provided inside the musical instrument body 3 can be efficiently emitted to the outside, and the volume can be increased.

[Brief description of drawings]

1 and 2 are sectional views showing an embodiment of the present invention.
FIG. 3 is an exploded perspective view for explaining the structure of the main part of the present invention, FIGS. 4 and 5 are sectional views for explaining the conventional technique, and FIG. 6 shows problems of the conventional technique. It is a perspective view for explaining. 1,2: Lid half, 1D: Sound emission hole, 3: Instrument body, 4: Lever, 5:
Slide guide mechanism, 6: speaker, 7: bottom plate, 8: front panel, 9: keyboard, 11: ceiling plate.

Claims (1)

(57) [Scope of utility model registration request] 1. A lid for covering an upper surface of a keyboard is divided into two parts, a front part and a rear part, and the two half parts are connected to each other by a hinge. It is supported by levers attached to both sides of the lever half so as to rotate, and the rear end of the rear lid half is slidably supported by a slide guide mechanism provided inside the musical instrument body. An electronic keyboard musical instrument comprising a keyboard lid configured to be housed inside the instrument body when the upper surface is opened, wherein the rear lid half is inside the instrument body. An electronic keyboard instrument in which a speaker is arranged between a position where the instrument is housed and a ceiling plate of the instrument body, and a sound emission hole is provided in the front lid half.