JP2005128051A - Structure for mounting stand to keyboard instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide structure for mounting a stand to a keyboard instrument with which the mounting of the stand to a main body of the keyboard instrument is easily and quickly performed and also with which totter in the longitudinal direction of the main body of the keyboard instrument to the stand can be suppressed. <P>SOLUTION: The structure for mounting the stand to the keyboard instrument is equipped with: mounting metal fixtures 31 each of which has a stand-side mounting part 33 which is fixed at each upper end part of a pair of right and left stand main bodies 21, 21 and a piano main body-side mounting part 35 which has mounting holes 35a and on which a piano main body 2 is placed; mounting screws 36 which are inserted into the mounting holes 35a from below and also which are screwed into the bottom part of the piano main body 2; hooking metallic parts 12 which are fixed at a position laterally separated from the mounting metal fixture 31 on top faces of the pair of the right and left stand main bodies 21, 21 and one of right and left end parts of the bottom face of the piano main body 2; and hook receptacle metallic parts 32 which are fixed at top faces of the pair of the right and left stand main bodies 21, 21 and at the other of the right and left end parts of the bottom face of the the piano main body 2 and which are engaged with the hooking metallic parts 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is applied to, for example, an electronic piano, and relates to a keyboard instrument stand mounting structure for mounting a stand on the bottom surface of a musical instrument body.

  Conventionally, as this type of keyboard instrument stand mounting structure, for example, the one described in Patent Document 1 already filed by the present applicant is known. In this stand mounting structure, the stand and the musical instrument main body are configured as follows. That is, the stand has a pair of left and right side plates provided at a predetermined interval in the left-right direction, and a pair of front and rear attachments is provided at the inner upper end of each side plate at a predetermined interval in the front-rear direction. A bracket is attached. That is, a total of four mounting brackets are attached to this stand. Each mounting bracket is formed in a substantially L shape by bending a metal plate of a predetermined shape, etc., and is attached to a vertically long side plate fixing portion screwed to the side plate and bent horizontally from the upper end thereof. The shelf plate fixing portion extends and has a female screw. On the other hand, the instrument body has a shelf at the bottom, and two sets of attachment holes having two rectangular and circular through holes that are slightly separated from each other in the front-rear direction at the left and right ends of the shelf. Are provided at intervals in the front-rear direction. That is, a total of four sets of mounting holes are provided in the shelf board.

  The stand is attached to the instrument body as described above as follows. That is, first, the stand is installed on a horizontal place such as a floor. Next, the instrument body is brought close to the stand from above, and the four mounting brackets at the upper end of the stand are respectively inserted into the rectangular through holes of the four sets of mounting holes from below the shelf board, and the instrument body is placed on the stand. Placed on. In this case, the shelf fixing portion of each mounting bracket is located slightly above the upper surface of the shelf. Thereafter, the instrument body is slightly slid forward with respect to the stand, and the female screw of each mounting bracket is matched with the circular through hole of each mounting hole of the shelf board. Then, each of the four male screws is inserted into the circular through hole of each mounting hole from below the shelf board, and is screwed into the female thread of each mounting bracket using a tool such as a screwdriver. Thereby, the attachment of the stand to the instrument body is completed.

  In such a conventional stand mounting structure, when the stand is mounted on the musical instrument main body, the four mounting brackets on the stand side must be simultaneously inserted into the four rectangular through holes on the musical instrument main body side. Therefore, it is complicated to insert the mounting bracket into each through hole, and it takes time to mount the stand. In addition, when the stand is attached to the instrument main body using the four mounting brackets as described above, the instrument main body is mounted in the front-rear direction because the instrument main body is screwed at two positions on the left and right ends. There is almost no shaking. However, each mounting bracket has a side plate fixing portion provided along the side plate of the stand, so that when the lateral force is applied to the instrument body, the side plate fixing portion of the mounting bracket bends in the left and right direction. There is a problem that the main body wobbles in the left-right direction with respect to the stand. In view of the above, there is room for improvement in the stand mounting structure.

  The present invention has been made to solve the above-described problems, and can easily and quickly attach the stand to the musical instrument main body, and can suppress wobbling of the musical instrument main body relative to the stand in the left-right direction. It is an object of the present invention to provide a keyboard instrument stand mounting structure.

JP 2002-221962 A

  A keyboard instrument stand mounting structure according to claim 1 of the present invention is a keyboard instrument stand mounting structure for mounting a stand having a pair of left and right legs to the bottom surface of the instrument body, and each of the pair of left and right legs. A mounting bracket having a leg mounting part fixed to the upper end of the instrument, and a main body mounting part having a mounting hole extending laterally from the leg mounting part and penetrating in the vertical direction and on which the instrument body is placed And a male screw inserted into the mounting hole of the mounting bracket from below, screwed into the bottom of the instrument body, the upper surface of each of the pair of left and right legs, and the left and right ends of the bottom surface of the instrument body On the other hand, it is fixed to the other one of the left and right end portions of the bottom surface of the instrument body, and the hook bracket fixed at a position away from the mounting bracket in the left-right direction, the pair of left and right leg portions, Hook holder that engages with the hook metal fitting Characterized in that it comprises a bracket, a.

  According to this configuration, when the stand is attached to the instrument body, first, the hook metal fitting fixed to either the upper surface of each of the pair of left and right legs and the left and right ends of the bottom surface of the instrument body, The musical instrument main body is assembled to the stand so as to engage with the hook metal fitting fixed to the other side and to place the musical instrument main body on the main body attachment portions of the left and right mounting metal fittings. Then, the male screw is inserted into the mounting hole of each mounting bracket from below and screwed into the bottom of the instrument body. Thereby, the attachment of the stand to the instrument body is completed. In the stand mounting structure having the above configuration, in addition to screwing using the left and right mounting brackets, the left and right hook brackets fixed at positions away from the mounting bracket in the left-right direction are respectively engaged with the hook receiving brackets. Since the stand is connected to the instrument body and attached, the wobbling of the instrument body with respect to the stand in the left-right direction can be suppressed. In addition, when attaching the stand to the instrument body, the hook bracket is engaged with the hook bracket so that the instrument body and the stand can be positioned in the horizontal direction easily and properly. Installation can be done easily and quickly.

  According to a second aspect of the present invention, in the keyboard instrument stand mounting structure of the first aspect, the hook metal fitting and the hook receiving metal fitting are configured to engage with each other in the front-rear direction, and each has a stopper portion that abuts against each other. And a female screw that is provided at each of the left and right ends of the bottom surface of the instrument body and that fits into the mounting hole of the mounting bracket when the stoppers abut against each other and into which the male screw is screwed. Features.

  According to this configuration, since the hook metal fitting and the hook metal fitting are configured to engage with each other in the front-rear direction, the stopper portions of both metal fittings can be moved in the front-rear direction by completely engaging these metal fittings with each other. Abut. When the two stoppers are in contact with each other, the female screws provided at the left and right ends of the bottom surface of the instrument body match the mounting holes of the mounting bracket, so that the instrument body and the stand are positioned in the front-rear direction. The male screw can be easily screwed into the female screw through the mounting hole. Thereby, attachment of the stand to a musical instrument main body can be performed still more easily and rapidly.

  The invention according to claim 3 is the keyboard instrument stand mounting structure according to claim 2, wherein the female screw has a plurality of retaining projections on the outer peripheral surface and is embedded in the bottom of the instrument body via the plurality of projections. It is characterized by being a nut.

  According to this configuration, by embedding a so-called demon nut having a plurality of retaining projections on the outer peripheral surface in the bottom of the instrument main body, the female screw for screwing the male screw can be easily and firmly attached to the bottom of the instrument main body. The stand can be firmly attached to the instrument body by screwing the male screw into such a nut.

The electronic piano to which the stand attachment structure by one Embodiment of this invention is applied is shown, (a) is a front view, (b) is a right view. (A) And (b) is a figure which expands and shows the inside of the dashed-dotted line circle | round | yen of FIG. 1 (a) and (b), respectively. The hook metal fitting is shown, (a) is a top view, (b) is a right view, (c) is a rear view. The mounting bracket is shown, (a) is a plan view, (b) is a right side view, and (c) is a rear view. The hook metal fitting is shown, (a) is a top view, (b) is a right view, (c) is a rear view.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an electronic piano to which a keyboard instrument stand mounting structure according to an embodiment of the present invention is applied. FIGS. 2 (a) and 2 (b) are respectively shown in FIGS. 1 (a) and 1 (b). While enlarging the inside of a dashed-dotted line circle | round | yen, it has broken and shown a part. As shown in these drawings, the electronic piano 1 (keyboard instrument) includes a piano body 2 (musical instrument body) and a stand 3 that supports the piano body 2 from below. In this electronic piano 1, the stand 3 is attached at both the left and right ends of the lower surface of the piano body 2, and their attachment structures are symmetrical with each other. It will be described with reference to the drawing showing the right-side mounting structure.

  The piano body 2 has an outer shell case composed of a shelf plate 4, a pair of left and right arms 5, 5, an upper case portion (not shown), and the like that constitute the bottom portion. Although not shown in the figure, in the front half of the piano body 2 (the left half of FIG. 1B), a large number of white keys and black keys are arranged side by side in the left-right direction. On the upper case part of the right half part of the figure, a control panel having various switches and the like is provided. Further, a keyboard lid 6 is provided on the upper portion of the piano body 2 so as to be rotatable about the rear end portion. The keyboard cover 6 covers the keyboard and the upper case when closed, and can be used as a music stand when opened. .

  Mounting nuts 11, 11 (to be described later) into which mounting screws 36 to be described later are screwed at predetermined positions at both left and right ends of the shelf board 4 at a predetermined distance from each other in the front-rear direction (left-right direction in FIG. 2B). (Female thread) is fixed. Each mounting nut 11 is a so-called demon nut having a plurality of retaining protrusions 11 a on the outer peripheral surface and a flange 11 b on the upper end, and is substantially flush with the lower surface of the shelf plate 4 and the upper surface of the shelf plate 4. It is attached to the shelf 4 in a state of being embedded from above so that the flange 11b comes into contact therewith.

  Hook fittings 12 and 12 are attached to the left and right ends of the bottom surface of the shelf board 4 at predetermined positions away from the attachment nut 11 in the left and right direction, respectively. As shown in FIG. 3, each hook metal fitting 12 is formed in an approximately L shape by bending a metal plate having a predetermined shape, etc., and an attachment portion for attaching the hook metal fitting 12 itself to the shelf board 4. 13 and a hook portion 14 that bends and extends at right angles from the end portion of the mounting portion 13 and engages with a hook receiving member 32 described later. Two mounting holes 13 a and 13 a are formed in the mounting portion 13, and the hook metal fitting 12 is screwed to the lower surface of the shelf plate 4 through these mounting holes 13 a and 13 a. Thus, in a state where the hook metal fitting 12 is attached to the shelf board 4, the hook portion 14 extends forward by approximately twice the length of the attachment portion 13 in the front-rear direction.

  On the other hand, as shown in FIG. 1A, the stand 3 includes a pair of left and right stand bodies 21 and 21 (leg portions) disposed at a predetermined interval in the left-right direction, and extends in the left-right direction. The cross member 22 attached between the upper parts of the main bodies 21 and 21 is assembled integrally. Each stand main body 21 is formed in a vertically long box shape, and a speaker 23 electrically connected to the piano main body 2 is built in the upper part. In addition, an opening / closing door 24 that is rotatable about an axis extending in the vertical direction is attached to the front surface of each stand body 21 via a hinge (not shown), and below the speaker 23 in the stand body 21, A storage space 25 is provided for storing musical scores and headphones.

  Further, a mounting bracket 31 and a hook receiving bracket 32 are mounted at predetermined positions on the upper surface of each stand body 21 with a space in the left-right direction.

  As shown in FIG. 4, the mounting bracket 31 is formed in a stepped shape by bending a metal plate having a predetermined shape, and the stand side mounting portion 33 for mounting the mounting bracket 31 itself to the stand main body 21. (Leg part mounting part), a standing part 34 that is bent and extended at a right angle from the end part thereof, and a stand side mounting part that is bent at a right angle from an end part of the standing part 34 opposite to the stand side mounting part 33 33 is formed of a piano main body side mounting portion 35 (main body mounting portion) that extends to the opposite side of 33 and is screwed to the shelf plate 4 of the piano main body 2.

  The stand side mounting portion 33, the standing portion 34, and the piano main body side mounting portion 35 are all formed in a horizontally long rectangular shape and are connected to each other at the long side portion. Two mounting holes 33a and 33a are formed in the stand side mounting portion 33, and the mounting bracket 31 extends in the front-rear direction through these mounting holes 33a and 33a. Screwed in place. The piano body-side mounting portion 35 is formed to be slightly longer than the stand-side mounting portion 33 and the upright portion 34, and at the same distance as the mounting nuts 11 and 11 from each other in the front-rear direction. Mounting holes 35a, 35a.

  On the other hand, as shown in FIG. 5, the hook receiving metal 32 is formed in a substantially U shape by bending a metal plate having a predetermined shape, and the hook receiving metal 32 itself is attached to the stand main body 21. Stand side mounting portion 37, a standing portion 38 that bends and extends at a right angle from the end portion thereof, and a stand side mounting portion that is bent at a right angle from the end portion of the standing portion 38 opposite to the stand side mounting portion 37. The hook receiving portion 39 extends in the same direction as 37 and engages with the hook metal fitting 12.

  All of the stand side mounting portion 37, the upright portion 38, and the hook receiving portion 39 are formed in a horizontally long rectangular shape and are connected to each other at the long side portion. Two attachment holes 37a, 37a are formed in the stand side attachment portion 37, and the hook receiving metal 32 extends in the front-rear direction through the attachment holes 37a, 37a and has a U-shaped opening. Screwed in a predetermined position on the upper surface of the stand main body 21 so as to face inward of the stand 3. In addition, the hook receiving portion 39 has a length approximately half that of the stand-side mounting portion 37 and the standing portion 38, and is continued from the front half of the standing portion 38. The through hole 39a formed in the front end portion of the hook receiving portion 39 is for inserting a tool when the front end portion of the hook receiving metal fitting 32 is screwed.

  Next, in the electronic piano 1 configured as described above, a procedure for attaching the stand 3 to the piano body 2 will be briefly described.

  First, as shown in FIG. 1, the stand 3 is installed in a state where it stands on a horizontal place such as the floor F. Next, the piano body 2 is placed on the stand 3. In this case, the left and right hook fittings 12, 12 of the piano body 2 are positioned behind the left and right hook receptacles 32 of the stand 3, more specifically, behind the hook receptacle 39 of the hook receptacle 32. The piano body 2 is placed. As a result, the piano body 2 has the bottom shelf 4 with the piano body side mounting portions 35 and 35 of the left and right mounting brackets 31 and 31 of the stand 3 and the hook receiving portions 39 and 39 of the left and right hook receiving brackets 32 and 32. And placed in a state of being supported from below.

  Next, the piano body 2 is slid forward. In this case, the hook portion 14 of the hook metal fitting 12 is guided to the standing portion 38 of the hook receiving metal fitting 32 and moves forward so as to enter the lower side of the hook receiving portion 39 of the hook receiving metal fitting 32. Then, the front end 12 a (stopper portion) of the bent portion between the mounting portion 13 and the hook portion 14 of the hook metal fitting 12 abuts on the rear end 39 b (stopper portion) of the hook receiving portion 39 of the hook metal fitting 32. Thus, when the front end 12a of the hook metal fitting 12 is in contact with the rear end 39b of the hook receiving metal fitting 32 and the hook metal fitting 12 is completely engaged with the hook receiving metal fitting 32, the left and right sides of the piano main body 2 side are respectively left and right. The two mounting nuts 11, 11 match the two mounting holes 35 a, 35 a of the left and right mounting brackets 31, 31 on the stand 3 side. Thereafter, the mounting screw 36 (male screw) is inserted into the two mounting holes 35a and 35a of each mounting bracket 31 from below and screwed into the mounting nuts 11 and 11, respectively. Thus, the work for attaching the stand 3 to the piano body 2 is completed.

  As described above in detail, according to the present embodiment, in addition to screwing using the left and right mounting brackets 31, 31, the left and right mounting brackets fixed at positions separated from the mounting brackets 31, 31 in the left-right direction. Since the stand 3 is connected and attached to the piano body 2 by engaging the hook fittings 12 and 12 with the hook receiving pieces 32 and 32, respectively, wobbling of the piano body 2 in the left-right direction with respect to the stand 3 can be suppressed. it can. Further, when the stand 3 is attached to the piano body 2, the left and right hook fittings 12, 12 are completely engaged with the left and right hook receiving fittings 32, 32, respectively. Positioning in the front-rear and left-right directions can be performed easily and appropriately, and each mounting nut 11 can be matched with the mounting hole 35 a of the mounting bracket 31, so that each mounting screw 36 is attached to the mounting nut via the mounting hole 35 a of the mounting bracket 31. 11 can be easily screwed. Thereby, the stand 3 can be easily and quickly attached to the piano body 2, and the stand 3 can be firmly attached to the piano body 2.

  In addition, this invention can be implemented in various aspects, without being limited to the said embodiment described. For example, in the embodiment, the hook metal fitting 12 is attached to the piano body 2 side, while the hook metal fitting 32 is attached to the stand 3 side. However, the relationship between the hook metal fitting 12 and the hook metal fitting 32 attachment positions may be reversed. . That is, the hook fitting 12 may be attached to the stand 3 side and the hook receiving piece 32 may be attached to the piano body 2 side.

  Further, when the left and right hook receiving brackets 32, 32 of the stand 3 are attached on the left and right stand bodies 21, 21 of the stand 3, they may be attached slightly obliquely so as to approach each other toward the front. . In this case, the hook portions 14 of the left and right hook brackets 12 can be brought into contact with the standing portions 38 of the left and right hook brackets 32 in a state where the hook bracket 12 is completely engaged with the hook brackets 32, respectively. It becomes. Thereby, when the stand 3 is attached to the piano body 2, the left and right positioning of the piano body 2 and the stand 3 can be more accurately performed, and the stand 3 is attached to the piano body 2 in a state where the stand 3 is attached. The wobbling in the left-right direction of the piano body 2 can be greatly suppressed.

  In addition, the configuration of the details of the piano body 2 and the stand 3 shown in the embodiment, as well as the mounting bracket 31, the hook bracket 12, and the hook bracket 32 are merely examples, and as appropriate within the scope of the present invention, Can be changed.

Explanation of symbols

1 Electronic piano (keyboard instrument)
2 Piano body (instrument body)
3 Stand 4 Shelf 6 Keyboard lid 11 Mounting nut (Female thread, nut)
11a Protrusion 12 Hook fitting 14 Hook part 21 Stand body (leg part)
31 Mounting bracket 32 Hook bracket 33 Stand side mounting part (Leg mounting part)
35 Piano body side mounting part (Main body mounting part)
35a Mounting hole 36 Mounting screw (Male thread)

Claims (3)

A keyboard instrument stand mounting structure for mounting a stand having a pair of left and right legs to the bottom of the instrument body,
The instrument body has a leg mounting portion fixed to the upper end of each of the pair of left and right legs, a mounting hole extending laterally from the leg mounting portion and penetrating in the vertical direction. A mounting bracket having a main body mounting portion,
A male screw inserted into the mounting hole of the mounting bracket from below and screwed into the bottom of the instrument body,
A hook fitting fixed to a top surface of each of the pair of left and right legs and each of left and right ends of the bottom surface of the musical instrument main body at a position separated in the left-right direction from the mounting bracket;
A hook receiving bracket that is fixed to the upper surface of each of the pair of left and right leg portions and the other of the left and right end portions of the bottom surface of the instrument body, and engages with the hook fitting;
A keyboard instrument stand mounting structure characterized by comprising: The hook metal fittings and the hook receiving metal fittings are configured to engage with each other in the front-rear direction, and have stopper portions that contact each other,
A female screw that is provided at each of the left and right ends of the bottom surface of the musical instrument body and that fits into the mounting hole of the mounting bracket when the stoppers abut each other and into which the male screw is screwed; The keyboard instrument stand mounting structure according to claim 1.   3. The keyboard according to claim 2, wherein the female screw is a nut embedded in a bottom portion of the musical instrument main body through the plurality of protrusions and having a plurality of retaining protrusions on an outer peripheral surface. Instrument stand mounting structure.

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