JPH0143756Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] This invention is an electronic musical instrument that has a simplified structure, can secure a wider field of view below the keyboard, and improves the operability of petal keyboards, expression pedals, etc. Regarding.

[Prior art]

Various electronic musical instruments have been proposed in the past in which the keyboard section can be adjusted to an appropriate height according to the height of the player, and one example of such electronic musical instruments is one constructed as shown in Fig. 1. There is. That is, 1
is the pedal box as the lower body, 2 is the pillar 3
A keyboard section 4 as an upper body is disposed above the pedal box 1 in a height-adjustable manner, and 4 is a large number of pedal keyboards arranged in parallel on the front of the pedal box 1. It consists of The height adjustment mechanism of the keyboard section 2 includes a structure in which the support column 3 is divided into two parts, and an upper support column 3B that is vertically installed on the lower surface of the keyboard section 2 along a lower support column 3A that is installed upright on the pedal box 1. It can be moved up and down.

Such electronic musical instruments can be easily played by children, etc., and when transported with the keyboard section 2 lowered, the center of gravity is lowered, resulting in better stability, preventing accidents such as falls, and requiring less storage space. It has excellent advantages such as

However, since all such conventional electronic musical instruments are configured to vertically move the keyboard section 2, when the keyboard section 2 is lowered as shown by the chain line, the front surface 2a of the keyboard section 2 This obstructs the view below the keyboard, making it difficult to visually recognize the pedal keyboard 4, which poses a problem in terms of playability.

[Summary of the idea]

This idea was made in view of the above-mentioned points, and consists of a lower main body that is installed on the floor and has a lower support that slopes toward the player, and a keyboard that is arranged on the upper surface and fits into the lower support. The upper body can be adjusted by providing an upper body having a slidable upper column and a height adjustment mechanism that can adjust the height of the upper body by adjusting the amount of engagement between the lower column and the upper column. To provide an electronic musical instrument that can secure a wide field of view below an upper body even when lowered, and allows even children, etc., to operate a pedal keyboard etc. reliably.

〔Example〕

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

FIG. 2 is a partially cutaway front view showing an embodiment of the electronic musical instrument according to the invention, FIG. 3 is a side view, and FIG. 4 is an enlarged sectional view of the main part. Components in the figure that are the same as those in FIG. 1 are designated by the same reference numerals, and their explanations will be omitted. In these figures,
A column 10 that supports the keyboard section 2 almost horizontally is a lower column 1 that is erected toward the rear of the center of the upper surface of the pedal box 1 and tilted forward at an appropriate angle (for example, 70 degrees).
0A, and the lower support 10 is located at the center of the bottom surface of the keyboard section 2.
It is composed of an upper support column 10B that is vertically installed and inclined rearward at the same angle as A. The lower support column 10
A and the upper support 10B are both formed into a rectangular tube shape,
The upper support column 10B is slidably fitted to the outer periphery of the upper end of the lower support column 10A. A height adjustment mechanism 11 for the keyboard section 2 is incorporated inside these support columns 10A and 10B.

As shown in FIG. 4, the height adjustment mechanism 11 includes a worm 13 located above the inside of the lower support column 10A, and a worm wheel 14 that meshes with the worm 13.
5 indicates the left and right side plates 1 forming the lower support column 10A.
Elongated holes 17a formed in 6a and 16b, respectively.
It is rotatably supported by shaft holes 19a and 19b formed at the lower ends of left and right side plates 18a and 18b, respectively, which protrude from 17b and constitute the upper support column 10B. A handle 20 is attached to one end of this shaft 15. On the other hand, the worm wheel 14 has a threaded rod 2 screwed into a threaded hole formed in the middle of the upper surface of the lower support 10A.
This threaded rod 21 is fitted and fixed to the lower end of the threaded rod 21.
The upper end is rotatably supported by a shaft hole 23 formed in the upper surface of the upper support 10B, and axial movement is restricted and prevented by a pair of flanges 24a and 24b.

Note that the long holes 17a and 17b are connected to the lower support 10.
A is formed in the longitudinal direction, and the threaded rod 21 is disposed along the axis of the lower strut 10A and the upper strut 10B.

In such a configuration, when the handle 20 is rotated by hand, the rotation is transmitted to the threaded rod 21 via the shaft 15, the worm 13, and the worm wheel 14, so that the threaded rod 21 rotates and simultaneously moves in the axial direction. Therefore, the upper support column 10B also moves up and down together with the threaded rod 21, changing the height of the keyboard section 2. At this time, the keyboard section 2 is connected to the lower support column 10A.
Since it tilts and moves vertically along the axis, when it goes down as shown by the chain line in FIG. 3, it shifts backward by Δd compared to when it is set and held in the upper position. As a result, the field of view below the keyboard is expanded by an angle θ compared to when the keyboard is simply lowered vertically.
make visual recognition easy and reliable. Therefore, these erroneous operations are reduced, and a good performance can be enjoyed. In addition, since the height adjustment mechanism 11 is configured by the worm 13 and the worm wheel 14, the keyboard section 2 will not move unless the handle 20 is turned.
does not naturally lower due to its own weight, etc., and can maintain an appropriate height.

FIG. 5 is a front view of an electronic musical instrument showing another embodiment of this invention. In this embodiment, the keyboard section 2 is supported so as to be movable diagonally up and down by a pair of left and right columns 31 and 32 that are erected on the pedal box 1 at an appropriate angle to the front, and the height thereof is adjusted. It is configured as follows. In this case, the height adjustment mechanism is a handle 20 provided on the bottom surface of the keyboard section 2.
The rotation is transmitted to the upper struts 31b and 32b of each strut 31 and 32 through a suitable rotation transmission mechanism (not shown) consisting of a combination of a gear train, a threaded rod, etc., and the upper struts 31b and 32b are moved up and down simultaneously. Just do it.

Incidentally, in each of the above embodiments, the height of the keyboard section 2 is adjusted by manual operation of the handle 20, but this invention is not limited to this in any way. Of course, the height may be adjusted using a hydraulic cylinder or the like.

[Effect of idea]

As explained above, the electronic musical instrument according to this invention has an upper body disposed above the lower body, a lower column tilted forward, and a lower column that is slidably fitted into the lower column, and a keyboard is disposed on the upper surface. Since the upper support is configured to be raised and lowered by a height adjustment mechanism, the upper main body can be shifted rearward when the upper main body is lowered. Therefore, the field of view below the upper body is wider than when the upper body is lowered vertically, making it easier and more reliable to visually recognize the pedal keyboard, etc., and improving operability.

[Brief explanation of the drawing]

Figure 1 is a side view showing an example of a conventional electronic musical instrument;
Fig. 2 is a partially cutaway front view showing an embodiment of the electronic musical instrument according to this invention, Fig. 3 is a side view of the instrument, Fig. 4 is an enlarged cross-sectional view of the main parts of the instrument, and Fig. 5 is this. FIG. 3 is a front view of an electronic musical instrument showing another embodiment of the invention. 1... Pedal box (lower body), 2... Keyboard section (upper body), 4... Pedal keyboard, 10...
Support column, 10A...Lower support column, 10B...Upper support column, 11...Height adjustment mechanism, 13...Warm,
14... Worm wheel, 20... Handle,
21...Threaded rod.

Claims (1)

[Scope of Claim for Utility Model Registration] A lower main body that is installed on the floor and has a lower support that slopes toward the player, and an upper support that has a keyboard on its upper surface and is slidable to fit into the lower support. An electronic musical instrument, comprising: an upper body; and a height adjustment mechanism capable of adjusting the height of the upper body by adjusting the amount of engagement between the lower support and the upper support.