JP3401119B2 - Electronic keyboard instrument stand - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stand for supporting a main body of an electronic keyboard musical instrument having a keyboard such as an electronic piano.

[0002]

2. Description of the Related Art Conventionally, the stand of this type of musical instrument is shown in FIG.
As shown in, a pair of left and right gable bases a, a, side plates b extending upward from the bases a, and a back plate c provided between the side plates are formed into a substantially U-shaped planar shape. A keyboard instrument body d such as an electronic piano is supported above. Usually, the wife base a
Is made of acrylonitrile-butadiene-styrene copolymer resin (ABS resin), and the side plate b has a thickness of 30-40.
A particle board having a thickness of about 9 mm and a back plate c made of a particle board having a thickness of about 9 mm are used. For the assembly, as shown in FIG. 2, the alignment protrusion e and the screw holes f, f are provided on the upper surface of the gable base a, and the positioning holes g and the mounting holes h provided on the lower surface of the side plate b are associated with them. Then, the side plate b is further fixed to the side plate b with a mounting bracket j of the back plate c, a pedal base mounting bracket k, and a shelf fixing bracket l for fixing the lower shelf of the electronic keyboard instrument body d. Are mounted and assembled as shown in FIG. A round nut m is embedded from the side of the side plate b in order to fix the screw i that penetrates the gable base a to the side plate b. On the pedal base mounting bracket k, a pedal base n formed by V-cutting a wooden plate such as a particle board and bent into a substantially U shape as shown in FIG. 4 is fixed to the side plate b with a screw o, and the back plate c is a screw. It is fixed to the mounting bracket j of the side plate b and the pedal base n with o. The pedal base n
Prior to this assembly, the reinforcing members q, q are adhered to the inner surface of the bend of the pedal as shown in FIGS.
Is assembled. After the assembly of the stand is completed, the electronic keyboard musical instrument body d is fixed to the shelf fixing metal fitting l.

[0003]

The conventional stand has to use the thick side plate b as described above in order to have strength, and such a thick side plate b is applied not only to the material itself but also to the wood mouth. Since it is necessary to attach a decorative film, it is expensive, and in order to attach the side plate b, the wife base a is preliminarily attached.
The positioning protrusion e is provided on the side plate, and the side plate b is provided with the positioning hole g, the mounting hole h, and the round nut m. Preliminary work is required, and more mounting brackets are required. The workability is poor, the material cost is high, and the number of steps is large, which causes the cost to be high. Further, since many metal fittings are attached to the side plate b, it is necessary to secure a wall thickness for screwing in, and it is difficult to reduce the wall thickness.

It is an object of the present invention to provide a stand for an electronic keyboard musical instrument, which can use thin side plates and back plates, has a small number of assembling steps, has good workability, is inexpensive, and has a good appearance.

[0005]

According to the present invention, a horizontal U-shaped cross section surrounds three sides by flat side plates extending upward from a pair of left and right gable bases and flat back plates arranged between the side plates. In a stand for supporting an electronic keyboard instrument configured as described above, a pair of stanchions having vertical grooves for holding a side plate and a back plate are erected and fixed on each gable base, and the side plate and the back plate are placed in the vertical grooves of the stanchions. The above-mentioned object was achieved by fitting the side edges of the. The above object can be achieved even more specific probability by the structure according to claims 2 to 8.

[0006]

[Operation] A pair of stanchions are screwed to the prepared pair of gable bases with the vertical grooves facing each other, and the side edges of the flat side plates are attached to the facing vertical grooves between the stanchions of each gable base. Plug in,
The side plates are fixed by screwing the upper end fittings to the upper ends of the columns. The pedal base is stretched over the support member previously attached to each gable base and screwed, and then the side edge of the flat back plate is inserted into the vertical groove of the back column of each gable base, and the side edge is Assemble to a stable stand by screwing it to the column. Since the supporting column supports the load and it is not necessary to screw it to the side plate itself, and since there is no need to attach a metal fitting to the side plate, it is not necessary to take the thickness necessary for attaching the screw, so use a thin and inexpensive side plate. You can In addition, since the back plate and the shelf of the electronic keyboard instrument main body are not required to have a stopper or a round nut, preliminary work for opening the prepared hole is eliminated, and the number of steps can be reduced.

By forming a vertical groove on the side surface of the support column by changing the directions of the openings to 90 ° with respect to each other,
Since the support pillar is shared and the number of parts is reduced, and the positioning projection formed in the vertical groove of the metal hollow pillar supports the side end surface of the side plate or the back plate as in claim 3, the assembly size is constant. It is possible to prevent the vertical groove from being deformed by the insertion of the side plate or the back plate. Further, with the structure of claim 4 or 5, the work of forming the pilot hole is not necessary, and the stand is formed by connecting the upper ends of the columns to each other with one metal upper end fitting as in claim 6. Can be integrated to obtain the required strength.

[0008] The material of the pedal base provided between the pair of toe blocks, by a metal aluminum extrusion material or the like having such a configuration according to claim 7, pedal base is also facilitated assembly less expensive. Further, the pedal base is the same as in claim 8.
As described above, by using the supporting member made of a metal material having a substantially U-shaped cross section, it can be firmly fixed on the gable base.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an electronic piano will be described. In FIGS. 7 to 9, reference numeral 1 is a pair of left and right gable bases 2, 2 and a flat plate shape extending upward from each gable base 2.
The side plates 3,3 and a flat plate disposed between the side plates 3,3
2 shows a stand for an electronic keyboard musical instrument surrounded by a back plate 4 and having a U-shaped horizontal cross section . The gable base 2 is formed into a square rod shape by providing a screw hole 5 with, for example, an ABS resin or a medium-quality fiber board, and two columns 6 and 6 are fixed to the upper surface of each gable base 2 with screws 7. As the side plate 3 and the back plate 4, a particle board, a synthetic resin honeycomb plate, a transparent plate or the like is used.

As shown in FIG. 9 , the pillar 6 is a hollow rectangular pillar 6a made of an extruded aluminum material, and the adjoining peripheral surface of the pillar 6 is changed in the direction of 90 ° to change the thickness of the side plate 3 and the back plate 4. Vertical grooves 8 and 9 having an opening having a width substantially equal to that of the side plate 3 are fitted in one of the vertical grooves 8 and the side edge of the back plate 4 is fitted in the other vertical groove 9. I tried to wear it. The depth of each of the vertical grooves 8 and 9 is narrower than the width of the opening due to chamfering in manufacturing, so that, for example, when the side plate is fitted, the side edge of the side plate is deformed or the vertical grooves 8 and 9 are formed. The face plates 8a, 9a forming the above are deformed, the fitting end position of the side plate is not fixed, and the situation that the dimensions are not constant occurs, but in order to prevent this, the inside of each vertical groove 8, 9 has Positioning ridge 1 extending in the length direction
0 and 11 are formed, and when the side plate 3 or the like is fitted, the end surface of the side plate 3 abuts on the ridges 10 and 11 so that the side plate or the like can be accurately positioned. In addition, the peripheral surface 6b of the hollow pillar 6a
The vertical groove 9 for the back plate, into which the back plate 4 is fitted, has its opening direction oriented in the width direction of the hollow column 6a and the peripheral surface 6b.
A groove 12 for fixing a back plate extending in the length direction of the hollow column 6a is provided on the peripheral surface 6b which is formed along the opening and is located in front of the opening in the longitudinal groove 9. After the plate 4 was fitted, the back plate 4 was fixed to the hollow column 6a by penetrating the back plate 4 and screwing a screw 13 thicker than the groove width into the screw fixing groove 12. Further, ribs 15 and 15 formed of a cylindrical ridge having screw threaded holes 14 whose peripheral surface is partially broken are provided at positions facing the inner surface of the hollow portion of the hollow column 6a.
Are formed in the length direction of the hollow column 6a, and the screw 7 through which the gable base 2 is inserted and the screw 18 through which the upper end metal fitting 17 is inserted are provided at both end faces of the hollow column 6a. It was fixed to. The upper end fitting 17 is attached to the upper ends of the two columns 6 standing on each gable base 2 to maintain the distance between the columns 6 and to fix the electronic keyboard instrument body to the stand 1. It has mounting holes 16 and 16 for fixing the shelf board of the keyboard musical instrument body. The pillar 6 may be formed in a solid cross-sectional shape as shown in FIG.

An electronic keyboard instrument is provided with a pedal base 20 for mounting a pedal 19. The pedal base 20 is made of an aluminum extruded material having a substantially L-shaped cross section having an upper surface 20a and a front surface 20b as shown in FIG. It is made of metal, and a groove 22 for fixing and fixing the pedal unit 21 and a groove 23 for fixing the back plate 4 are formed on the inside of the upper surface located on the folding side, and two projections are formed on the inside of the front surface. A positioning stopper 24 for defining the position of the pedal unit 21 in the front-rear direction is formed. Reference numeral 26 denotes a pedal lead-out notch formed on the front surface 20b. The pedal bases 20 are fixed to the left and right wife bases 2 respectively.
It is attached so as to be stretched over a U-shaped channel-shaped support member 25 as shown in FIG.

In the above-mentioned embodiment, the two screw pillars 6a are respectively attached to the gable bases 2 and 2 with the side plate vertical groove 8 and the back plate fixing screw fixing groove 12 facing each other. 7, the support member 25 is screwed and the both side edges of the side plate 3 are fitted into the vertical grooves 8 from above and inserted, and then the upper end fittings 17 are screwed into the two hollow columns 6a. Fix it. Then, both ends of the pedal base 20 having an L-shaped cross section in which the pedal unit 21 is assembled are fixed to the respective support members 25, 25, and the back plate 4 is provided in the vertical groove 9 for the back plate of the hollow pillar 6a at the rear of each gable base 2, 2. The side edges of the hollow columns 6a are respectively fitted to adjust the height thereof, the screws 13 are penetrated through the back plate 4 and screwed into the screw fixing grooves 12 of the hollow pillars 6a, and the recesses 23 of the pedal base 20 are formed. Also, by fixing with screws, the stand 1 is completed. The hollow pillar 6
The shape of a is sufficient for one kind, and the positions of the vertical grooves 8 and 9 thereof are set to positions suitable for mounting the side plate 3 and the back plate 4 by replacing or rotating the hollow pillar 6a upside down. The side plates 3 and the back plate 4 are fitted in the vertical grooves 8 and 9
Since the positioning protrusions 10 and 11 are constant, the members can be assembled with a constant size without being deformed. The stand 1 is
Since the main body of the electronic keyboard instrument is supported by the columns 6, and no load is applied to the side plates 3 and the back plate 4 , thin and inexpensive side plates 3 and back plates 4 can be used, and the columns 6 are fixed with screws. No pre-processing is required and the number of mounting brackets is small, so the number of assembly steps can be reduced. Further, since the pedal base 20 is also manufactured by extrusion molding, there is no need to go through complicated steps such as cutting and bonding of a reinforcing material as in the conventional case, and the manufacturing is easy and inexpensive to obtain. It should be noted that it is optional to apply a design to the peripheral surfaces of the wife base 2 and the columns 6, the side plate 3, the back plate 4, and the surface of the pedal base 20 by appropriate means, for example, attaching a decorative film, printing, chemical treatment, or the like. is there.

[0013]

As described above, according to the present invention, a pair of stanchions having vertical grooves for holding the side plate and the back plate are erected and fixed on the pair of left and right gable bases of the stand for supporting the electronic keyboard instrument. Since the side edges of the side plate and the back plate are fitted in the vertical grooves of the lever, there is an effect that a relatively inexpensive material can be used as a constituent member and that the number of assembling steps can be reduced and the stand can be easily manufactured in a short time. The columns can be shared, the number of parts can be reduced, the assembly can be performed easily and accurately, and the back plate can be easily attached. Further, according to the structure of claim 5, the gable base and the upper end metal fitting can be attached to the support pillar without requiring pre-processing, and the support base can be connected and the electronic keyboard musical instrument main body can be simultaneously mounted by the upper end metal fitting, and the pedal base is claimed. With the configuration of Item 7, the pedal unit and the back plate can be easily attached at low cost, and the support member of Claim 8 is provided, so that the side plate can be thinned because screwing to the side plate is unnecessary. It is possible to reduce the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a conventional electronic keyboard instrument.

FIG. 2 is an exploded perspective view of a side plate portion of the electronic keyboard instrument stand of FIG.

FIG. 3 is an exploded perspective view of the electronic keyboard instrument stand of FIG.

FIG. 4 is a perspective view of a main part of the pedal base of FIG.

5 is a sectional view taken along line 5-5 of FIG.

6 is a right side view of FIG.

FIG. 7 is an overall perspective view of an embodiment of the present invention.

FIG. 8 is a right side view in which a part of the embodiment of the present invention is cut away.

9 is an enlarged sectional view taken along line 9-9 of FIG.

10 is a cross-sectional view of a modified example of the column shown in FIG.

11 is a perspective view of a main part of the pedal base of FIG. 7. FIG.

FIG. 12 is a perspective view of the support member of FIG.

[Explanation of symbols]

1 stand 2 gable base 3 side plate 4 back plate 6 support 6a
Hollow columns 7, 13, 18 Screws 8, 9 Vertical grooves 10,
11 Positioning Strip 12 Screw Stop Groove 14 Screw Screw Wearing Hole 15
Rib 17 Upper end bracket 19 Pedal 20
Pedal base 20a Upper surface 20b Front surface 21
Pedal unit 22 Groove 23 Groove 24
Positioning stopper 25 Support member

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G10H 1/32 G10B 3/00 F16M 11/00 A47B 91/00-91/16

Claims (8)

(57) [Claims] 1. A flat plate extending upward from a pair of left and right gable bases.
In a stand that supports an electronic keyboard musical instrument that has a horizontal cross-section that is substantially U-shaped and that surrounds three sides with a plate-shaped side plate and a flat plate-shaped back plate that is placed between each side plate, hold the side plate and back plate on each wife base. A stand for an electronic keyboard instrument, characterized in that a pair of struts having vertical grooves for use therein are erected and fixed, and side edges of the side plate and the back plate are fitted into the vertical grooves of the struts. 2. A side plate vertical groove having a width substantially equal to the thickness of the side plate and a back plate vertical groove having a width substantially equal to the thickness of the back plate are formed on the side surface of the support column. 9 opening directions
The device is formed by changing its direction to 0 °.
The electronic keyboard instrument stand described in. 3. The pillar according to claim 1, wherein the pillar is a hollow pillar made of metal, and a positioning protrusion extending in the longitudinal direction is formed in the vertical groove of the hollow pillar. A stand for electronic keyboard instruments. 4. The hollow pillar is formed as a substantially square pillar, and the vertical groove for the back plate is formed so that the opening direction thereof is the width direction of the hollow pillar and is along one peripheral surface of the hollow pillar. 4. The electronic keyboard according to claim 3 , further comprising a screw fixing groove for fixing the back plate, the groove being provided along the back plate vertical groove on the peripheral surface in front of the opening of the back plate vertical groove. Musical instrument stand. 5. The stand for an electronic keyboard musical instrument according to claim 3, wherein ribs having screw-threaded holes are provided on both end surfaces inside the hollow portion of the hollow column. 6. The stand for an electronic keyboard instrument according to claim 1, wherein the upper ends of a pair of stanchions erected on each of the gable bases are connected to each other by a single metal upper fitting. 7. A between the pair of toe blocks, top and a metal pedal foundation substantially L-shaped cross-section having a front, a pedal unit mounting fixed on the upper surface inside the recessed groove and said back plate fixed for A pedal base having a groove formed therein and having a positioning stopper for the pedal unit formed of a ridge formed on the inside of the front surface of the pedal base .
The electronic keyboard musical instrument stand according to any one of 6 above . 8. The stand for an electronic keyboard instrument according to claim 7, wherein the pedal base is fixed on the gable base via a supporting member made of a metal material having a substantially U-shaped cross section.