JP5851174B2 - Instrument or speaker support - Google Patents

Description

  The present invention relates to a musical instrument or speaker support.

  For example, musical instruments and speakers such as piano, organ, harpsichord, marimba, drum set, koto, keyboard harmonica, guitar, etc., when installed directly on the floor or stand, etc., impedes the freedom of vibration during performance and use. As a result, there is a problem that distortion occurs in sound wave vibration generated from these musical instruments and speakers.

  In order to solve this problem, the inventors of the present application have proposed support devices for these instruments and speakers in Patent Documents 1 and 2.

  In Patent Document 1, a load carrying member that forms a support point of a musical instrument or a speaker while maintaining a predetermined separation distance from a floor or a base above the base plate, a sound quality adjusting member embedded in the support point, and A support made up of is disclosed.

  In Patent Document 2, a base plate, a bridge portion that forms a support point for a musical instrument or a speaker while maintaining a predetermined spacing from the floor or the base above the base plate, and the bridge portion toward the floor or the base. A support having an arcuate leg portion extending is disclosed.

Japanese Patent No. 2593404 JP-A-11-194760

  Of course, in these instruments and speakers, the sound quality is very important for the original purpose of listening to music, and it is desirable that the adjustment range of the sound quality be wide. Therefore, it is desirable that there are various adjustment methods for sound quality. However, in the case of a musical instrument, the sound quality can only be adjusted directly to the internal components of the musical instrument. In the case of a speaker, the sound quality can only be adjusted by an amplifier after the start of use. .

  In view of the above circumstances, an object of the present invention is to provide a support that aims to adjust the sound quality of a musical instrument or a speaker according to the user's preference.

As a means for solving the above-mentioned problems, the musical instrument or speaker support of the present invention is a support having a support portion on which a flat support surface for supporting the musical instrument or the speaker is formed, and supports the musical instrument or the speaker. In this state, the support surface is inclined with respect to a horizontal plane, and a support member having the support portion, a base plate that is a separate body from the support member, and interposed between the support member and the base plate. and a spacer, the supporting member and of the mutual opposing two surfaces opposite the base plate includes at least one of the opposing surfaces is a curved surface, by the spacers, the contact position of the opposing two surfaces on the curved surface can be changed with it, and wherein the angle of inclination of the supporting surface can be changed.

  With the support tool of this configuration, since the support surface is inclined while the instrument or speaker is supported, the force received by the instrument or speaker from the support surface as a reaction against the load of the instrument or speaker is a horizontal component ( Horizontal component). Therefore, when this support is used, the instrument or the speaker receives a horizontal component force, so that the level of vibration in the horizontal direction changes. Therefore, it is possible to change the degree of vibration in the horizontal direction by changing the inclination angle of the support surface of the support tool to be used. Thereby, the sound quality of the musical instrument or the speaker can be changed. That is, the sound quality of the musical instrument or the speaker can be adjusted by using the support tool of this configuration.

In addition, sound transmitted from a musical instrument or speaker to a floor or a stand adversely affects sound quality by interfering with sound emitted from the musical instrument or speaker into the air. On the other hand, if the vibration in the horizontal direction of the musical instrument or speaker is reduced by this support, the sound caused by the vibration in the horizontal direction is lower than that in the case of using a support in which the support surface is not inclined. It is possible to suppress transmission to the table. Moreover, the inclination angle of the support surface can be changed with a simple configuration. Further, since the inclination angle of the support surface is changed by changing the contact position of the two opposing surfaces on the curved surface, the inclination angle of the support surface changes continuously and steplessly. Therefore, it is possible to finely adjust the inclination angle of the support surface.

In the above configuration, the opposing surfaces of the support member side of the opposing two surfaces is, the are formed in the support portion, the support portion of one end free ends der Rutotomoni, the other end of said support portion, said It may be fixed to an attachment portion fixed to the base plate via a spacer .

  In the above configuration, the support portion has a portion where the opposing surface on the support portion side includes a curved surface, and the distance between the curved surface and the support surface gradually decreases toward the free end toward the free end. You may have.

  In the case of the support device having this configuration, in a portion where the distance between the curved surface and the support surface in the support portion of the support device gradually decreases toward the free end toward the free end, the position where the load is applied to the support surface is the free end. The closer the load is, the greater the elastic deformation (bending) of the support portion even when the same load is applied. Depending on the degree of elastic deformation of the support portion, vibration of a specific frequency generated in the musical instrument or the speaker is amplified or attenuated. Therefore, the sound quality can be changed also by adjusting the position where the load is applied on the support surface.

  ADVANTAGE OF THE INVENTION According to this invention, the support tool aiming at adjusting the sound quality of a musical instrument or a speaker according to a user's liking can be provided.

It is a perspective view which shows the support tool of the musical instrument or speaker which concerns on embodiment of this invention. It is a figure which shows the support tool of the musical instrument or speaker which concerns on embodiment of this invention, Comprising: (A) is a top view, (B) is a side view. It is a figure which shows the supporting member of the support tool of the musical instrument or speaker which concerns on embodiment of this invention, Comprising: (A) is a top view, (B) is a side view. It is a figure which shows the baseplate of the support tool of the musical instrument or speaker which concerns on embodiment of this invention, Comprising: (A) is a top view, (B) is a side view. It is the XX sectional view taken on the line of FIG. It is a figure which shows the caster attached to the leg of a piano, Comprising: (A) is a caster which has prevailed recently, (B) is a figure which shows the caster which has prevailing conventionally. It is a front view which shows the piano of the state which is not supported by the musical instrument or speaker support of this invention, (A) is a figure before a deformation | transformation, (B) is a figure which shows after a deformation | transformation. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the piano of the state supported by the musical instrument or speaker support of this invention, Comprising: (A) is a front view, (B) is a top view. It is a figure which shows the support tool of the musical instrument or speaker which concerns on other embodiment of this invention, Comprising: (A) is a top view, (B) is a side view. It is a figure which shows the modification of the musical instrument or the support tool of a speaker of FIG. 9, Comprising: (A) is a top view, (B) is a side view. It is a top view which shows the usage example of the musical instrument or the support tool of a speaker of FIG. It is a front view of the piano which shows the usage example of the support tool of the musical instrument or speaker of FIG. It is a figure which shows the support tool of the musical instrument or speaker which concerns on other embodiment of this invention, Comprising: (A) is a top view, (B) is a side view. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the speaker of the state supported by the musical instrument or the support tool of the speaker of this invention, Comprising: (A) is a front view, (B) is a top view.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  1 and 2 show a musical instrument or speaker support according to an embodiment of the present invention. The support 1 of the present embodiment is particularly suitable for supporting the leg of a grand piano. In the following description, it will be described as supporting the leg of a grand piano. As shown in FIGS. 1 and 2, the support 1 includes a support member 2 and a base plate 3 that is a separate body from the support member 2 as main components. The support member 2 is attached to the base plate 3 with bolts 4.

  As shown in FIG. 3, the support member 2 is rectangular in plan view, and includes a support portion 5 for supporting the piano legs and an attachment portion 6 for attaching the support member 2 to the base plate 3. . In the support portion 5, one end in the longitudinal direction is a free end 5 a and the other end in the longitudinal direction is a fixed end 5 b fixed to the attachment portion 6. On the lower side of the support member 2, the support portion 5 protrudes below the attachment portion 6.

  The upper side of the support member 2 is a single flat surface, but the upper side of the support portion 5 is a support surface 5c for supporting a piano leg. The lower side of the support portion 5 is configured by a curved surface 5d. In the support portion 5, after the distance between the curved surface 5d and the support surface 5c gradually increases from the fixed end 5b toward the free end 5a, Gradually smaller. More specifically, as the transition from the fixed end 5b toward the free end 5a, the distance between the curved surface 5d and the support surface 5c gradually increases from the fixed end 5b to the middle, and from the middle to the free end 5a. Gradually decreases. That is, the support portion 5 has a portion where the distance between the curved surface 5d and the support surface 5c gradually decreases toward the free end 5a toward the free end 5a. The distance between the fixed end 5b and the curved surface 5d and the support surface 5c is the largest on the fixed end 5b side from the center of the fixed end 5b and the free end 5a. Further, a stopper 5 e protruding upward is formed at the free end 5 a of the support portion 5. The mounting portion 6 has a rectangular parallelepiped shape, and is formed with a hollow hole 6 a for inserting the bolt 4.

  An annular body 8 is attached to the upper side of the support member 2 with screws 7. The annular body 8 is for defining a position for supporting a piano leg on the support surface 5c. That is, the piano leg is supported by the support surface 5 c inside the annular body 8. The stopper 5e described above is provided to prevent the piano leg from dropping from the support 1 when the piano leg does not fit properly inside the annular body 8 during installation of the support 1 or the like. . A pair of side plates 8a extending along the side surfaces on both sides of the support member 2 are provided below the annular body 8, and the pair of side plates 8a extends along the longitudinal direction of the support member. A long hole 8b is formed at the same position. A female screw hole is formed in the side surface of the support member 2, and a male screw portion of the screw 7 inserted through the long hole 8 b of the side plate 8 a is screwed. The head of the screw 7 is in contact with the side plate 8a via a washer, and thereby the annular body 8 is fixed. If the screw 7 is loosened, the annular body 8 can be moved with respect to the support member 2 while being guided by the elongated hole 8b of the side plate 8a. Therefore, the position of the annular body 8 relative to the support member 2 can be changed. it can. Thereby, the position which supports the leg of a piano on the support surface 5c can be changed.

  The support member 2 and the annular body 8 are made of metal in the present embodiment, but are not particularly limited thereto, and may be made of resin, wood, or the like as long as they have a certain degree of rigidity. . However, the support surface 5c is preferably made of metal because rigidity is particularly required.

  As shown in FIG. 4, the base plate 3 has a shape like a ginkgo leaf in a plan view and has a function of stabilizing the posture of the support 1 with respect to the floor. The base plate 3 has a flat portion 3a having a uniform thickness and an upper side and a lower side being flat, and a pair of positioning portions 3b formed above the flat portion 3a for positioning the support portion 5 of the support member 2. It is formed between the pair of positioning portions 3b and includes a protruding portion 3c protruding above the positioning portion 3b. The positioning portion 3b has a rectangular parallelepiped shape, and its side surface faces the side surface of the support portion 5 in the support member 2 via a predetermined gap. The protrusion 3c has a rectangular parallelepiped shape, and the upper side thereof is a part facing the lower side of the attachment part 6 of the support member 2, and a bolt hole 3d is formed.

  The bolt 4 is inserted into the flaw hole 6 a of the mounting portion 6 of the support member 2, and the male screw portion 4 a is screwed into the bolt hole 3 d of the base plate 3. The support member 2 is fixed to the base plate by the head 4c of the bolt 4 that contacts the upper side of the support member 2 via the washer 4b, and the spacer 9 interposed between the mounting portion 6 of the support member 2 and the protruding portion 3c of the base plate 3. 3 is fixed. However, in a state where the support 1 supports the leg of the piano, the load transmitted from the support member 2 is applied to the head 4c side of the bolt 4 and thereby the support member 2 is fixed. Not necessary.

  As shown in FIG. 5, the curved surface 5 d of the support portion 5 of the support member 2 contacts the upper surface of the flat portion 3 a of the base plate 3 at the contact position P. At the contact position P, the curved surface 5d of the support portion 5 is in line contact with the upper side surface of the flat portion 3a of the base plate 3 with a straight line extending in the width direction. By changing the degree of screwing of the bolt 4 with respect to the bolt hole 3d and the thickness of the spacer 9, the height of the mounting portion 6 of the support member 2 can be changed. As the height of the mounting portion 6 of the support member 2 is increased, the contact position P where the curved surface 5d comes into line contact moves on the curved surface 5d from the fixed end 5b side to the free end 5a side. As the contact position P moves from the fixed end 5b side to the free end 5a side of the support portion 5, the inclination angle of the support surface 5c becomes steep. In other words, the inclination angle of the support surface 5c of the support portion 5 can be changed by changing the contact position P on the curved surface 5d. At this time, since the curved surface 5d is in contact with the flat surface (the upper surface of the flat portion 3a), the inclination angle of the support surface 5c of the support portion 5 changes continuously and steplessly. Therefore, the inclination angle of the support surface 5c can be finely adjusted. Thereby, the support surface 5c of the support part 5 can make an inclination angle into 0 degree-30 degrees with respect to the horizontal. Note that, in FIG. 5, the inclination angle is made larger and the curvature of the curved surface 5 d is made larger than those in FIGS. 1 and 2 so that it can be easily understood that the support surface 5 c is inclined. .

  With the support 1 having the above configuration, the following effects can be enjoyed.

  When the support surface 5c supporting the leg of the grand piano is tilted while supporting the leg of the piano, the force received by the piano from the support surface 5c as a reaction against the load of the piano is a horizontal component ( Horizontal component). Therefore, if this support tool 1 is used, since the piano receives a horizontal component, the degree of vibration in the horizontal direction changes. Therefore, it is possible to change the degree of the horizontal vibration by changing the inclination angle of the support surface 5c of the support 1 to be used. Thereby, the sound quality of the piano can be changed. That is, if the support tool 1 is used, the sound quality of the piano can be adjusted.

  In addition, sound transmitted from the piano to the floor interferes with sound emitted from the piano into the air, and adversely affects sound quality. On the other hand, if the horizontal vibration of the piano is reduced by the support 1, the sound due to the horizontal vibration is generated on the floor as compared to the case where the support 5 c is not inclined. It is possible to suppress transmission.

  In addition, the inventors' experiments have shown that in the case of a piano, horizontal vibration causes a particularly high frequency component of sound generated from the piano. Therefore, it is possible to adjust the amount of the high frequency component of the sound generated from the piano by changing the inclination angle of the support surface 5c of the support 1 to be used.

  Further, at a portion where the distance between the curved surface 5d and the support surface 5c in the support portion 5 of the support 1 shown in FIG. 5 gradually decreases toward the free end 5a toward the free end 5a, a position where a load is applied on the support surface 5c. The closer to the free end 5a, the greater the elastic deformation (bending) of the support portion 5 even when the same load is applied. Depending on the degree of elastic deformation of the support portion 5, the vibration of a specific frequency generated in the piano is amplified or attenuated. Therefore, the sound quality can be changed also by adjusting the position where the load is applied on the support surface 5c.

  When the high frequency contained in the sound is small, the sound quality becomes soft, and when the high frequency is high, the sound quality becomes hard. In FIG. 5, at a portion where the distance between the curved surface 5d and the support surface 5c in the support portion 5 gradually decreases toward the free end 5a toward the free end 5a, the position where the load is applied on the support surface 5c approaches the free end 5a. The sound quality becomes softer. If the piano is supported by the support surface 5c in the vertical direction of point P in FIG. 5, the sound quality of the piano becomes hard. When the thickness of the support portion 5 (distance between the curved surface 5d and the support surface 5c in the support portion 5) becomes thicker, the sound quality becomes harder, and when the thickness becomes thinner, the sound quality becomes softer. Moreover, if the material of the support part 5 is hard, sound quality will become hard, and if the material of the support part 5 is soft, sound quality will become soft.

  Moreover, since the support surface 5c inclines and the lower end of the leg of a piano is a circular plane, when the support surface 5c supports a piano leg directly with the support surface 5c, the support surface 5c is a piano. Since the point contact is often made to the leg, the piano is not unnecessarily restrained. As a result, the original sound emitted from the piano is not unduly suppressed. Moreover, it can suppress that an extra sound is transmitted to a floor from a piano.

  In the above description, it is assumed that nothing is attached to the leg of the grand piano. However, as shown in FIG. 6, casters 10 and 11 are usually attached to the leg L of the grand piano G. Yes. The leg L of the piano G may be directly supported by the support 1 with the casters 10 and 11 removed, but for convenience of movement of the piano G, the casters 10 and 11 may be supported with the casters 10 and 11 attached. preferable.

  The caster 10 shown in FIG. 6 (A) has been widely used recently, and is rotatably attached by fitting the pivot 10a to the leg L of the piano G. A wheel 12 is rotatably mounted between a pair of mutually parallel side plates 10c extending laterally from an inverted frustoconical column portion 10b on which the pivot shaft 10a is formed. On the other hand, the caster 11 shown in FIG. 6 (B) has been widely used in the past, and is rotatably attached by fitting the pivot 11a to the leg L of the piano G. A wheel 12 is rotatably mounted between a pair of mutually parallel side plates 11c extending obliquely downward from a rectangular substrate 11b on which a pivot 11a is formed. In any of the casters 10 and 11, the central axes of the pivots 10a and 10b are coaxial with respect to the central axis O of the leg L of the piano G, and the wheels in plan view with respect to the central axis O of the leg L of the piano G. 12 is out of contact. Thereby, when the piano G moves, the casters 10 and 11 are likely to be oriented along the moving direction, and the piano G can be easily moved.

  When the caster 10 shown in FIG. 6A is supported by the support tool 1, the support tool 1 is installed so that the support surface 5c of the support tool 1 abuts on the lower end of the column portion 10b. Since the lower end of the column portion 10b is also a circular plane, the support surface 5c often makes point contact with the column portion, so that the same effect as described above can be obtained. Further, as shown by a two-dot chain line in FIG. 6A, an abutting member C having an outer surface composed of a convex curved surface projecting downward is attached to the lower end of the column portion 10b. The support 1 may be arranged so that the support surface 5c contacts the member C. In this case, since the support surface 5c always makes point contact with the contact member C, the same effects as described above can be stably enjoyed. In addition, a lubricant such as oil may be applied to the contact portion between the support surface 5c and the contact member C. Thereby, since the piano G becomes easy to vibrate, sound quality can be changed.

  A specific example in which the sound quality of the piano G is adjusted by the support 1 described above will be described below. As shown in FIG. 7A, the leg L of the piano G initially extends along the vertical direction. However, as shown in FIG. 7A, when the ground contact portion of the casters 10 and 11 is located outside the center axis O of the leg L of the piano G, the ground contact portion of the wheel 12 of the casters 10 and 11 is the piano. Since it is displaced with respect to the central axis of the leg L of G, a force that opens the leg L of the piano G into a letter C acts as shown by a white arrow. If left in this state for a long time, as shown in FIG. 7B, the leg L of the piano G changes to a letter C due to aging. If it will be in this state, it will become difficult for the piano G to vibrate in the horizontal direction, and, thereby, the sound quality of the piano G will become different from the original.

  To solve this problem, as shown in FIG. 8A, a horizontal component force is applied to the leg L of the piano G in a direction opposite to the force that opens the leg L of the piano G into a C shape. If the support 1 of this embodiment is installed in each leg L, the leg L of the piano G will extend along the vertical direction, so that the sound quality is adjusted and the sound quality of the piano G is the original one. Close to. In addition, in FIG. 8, the support tool 1 is shown typically.

  For ease of understanding, FIG. 7 and FIG. 8 (A) have described the case where only two legs L of the piano G are displayed and simply opened into a C-shape, but in actuality, FIG. 8 (B) As shown, the grand piano G has three legs L. Therefore, since the force acting on the leg L of the piano G is complicated, the direction of the arrangement of the support 1 that supports each leg L and the inclination angle of the support surface 5c of the support 1 are set so that the desired sound quality can be obtained. Need to fine tune.

  Although the horizontal component force with respect to the piano G which is an effect peculiar to the support tool 1 of this embodiment generate | occur | produces when the support surface 5c of the support tool 1 inclines, as part of adjustment of this horizontal component force, it is horizontal. Of course, the support 1 may be used in a state where there is no component force, that is, a state in which the inclination angle of the support surface 5c is 0 ° (the support surface 5c is horizontal).

  In the said embodiment, although the inclination angle of the support surface 5c of the support tool 1 was changeable, this invention is not limited to this, Even if the inclination angle of the support surface 5c of the support tool 1 is fixed. Good. An example of the support 1 in which the inclination angle of the support surface 5c is fixed is shown in FIG. The support 1 includes a support member 2 and a base plate 3 to which the support member 2 is fixed as main components.

  The support member 2 has a base end fixed to the base plate 3 and extends upward in a substantially arc shape, a support portion 5 extending obliquely downward from the tip of the arc portion 2a, and a support portion 5 And a reinforcing portion 2b that extends obliquely downward from the tip of the base and abuts against the arc portion 2a to reinforce the strength of the support portion 5. A flat support surface 5c is formed on the upper side of the support portion 5, and the support surface 5c is inclined at an angle θ with respect to the horizontal. The angle θ is, for example, 1 ° to 5 °. The base plate 3 has a disk shape and has a function of stabilizing the posture of the support 1 with respect to the floor. The support member 2 is formed, for example, by bending a strip-shaped metal piece, and is fixed to the metal base plate 3 by welding or the like, for example. This support tool 1 has a characteristic that, when a load is applied to the support surface 5c, the arc portion 2a is elastically deformed, so that it is difficult to prevent vertical vibrations of a musical instrument or a speaker. Moreover, since it is a simple structure compared with the support tool 1 of the said embodiment, manufacturing cost can be suppressed.

  The support 1 is suitable for supporting a piano G to which a caster 11 shown in FIG. 6B is attached, for example. In this case, as shown by a two-dot chain line in FIG. 6B, the support surface 5c is brought into contact with the corner between the lower end surface and the side surface of the substrate 11b of the caster 11. Since the substrate 11b of the caster 11 is rectangular, the support surface 5c is in line contact with the substrate 11b of the caster 11. Thereby, the effect similar to the case where the support surface 5c of the support tool 1 mentioned above makes point contact with respect to the leg L of the piano G can be enjoyed. Note that when the casters 10 and 11 are attached to the legs L of the piano G, the wheels 12 are not supported by the support surface 5 c of the support 1. This is because, when the wheel 12 is supported by the support 1, the contact portion with the support surface 5 c of the wheel 12 is shifted from the center axis O of the leg L of the piano G in plan view. This is because there is a possibility that a force that spreads the character or the like, or that the wheel 12 takes an unexpected behavior.

  A modification of the support 1 illustrated in FIG. 9 is shown in FIG. In the support 1 illustrated in FIG. 10, the arc portion 2 a of the support member 2 in the support 1 of FIG. 9 extends further upward in a circular arc shape from the fixed end fixed to the base plate 3. It is a thing. The support 1 includes a support 5 extending obliquely downward from the tip of the arc portion 2a on the side opposite to the support 5 of the support 1 in FIG. 9 (B side in the figure), and the support 5 has a reinforcing portion 2b that extends downward from the tip of 5 and the tip abuts against the base plate 3 to reinforce the strength of the support portion 5. A flat support surface 5c is also formed above the support portion 5 on the B side, and the support surface 5c is inclined at an angle θ with respect to the horizontal. This angle θ is also, for example, 1 ° to 5 °. In the support 1, since there are two support surfaces 5 c having different heights, the mode of support by one support 1 can be diversified. Of course, the inclination angle θ may be different between the A side and the B side.

  For example, as shown in FIG. 11, there are three support tools 1 in FIG. 10, and a piano or a speaker is supported by a support surface 5 c on the B side. In this case, it is preferable that each support tool 1 is restrained by being tied to each other with a wire such as a wire W. Thereby, it can suppress that the support tool 1 remove | deviates from support object by shaking, such as an earthquake. Further, the sound quality can be changed by the tension of the wire such as the wire W. In this case, in each support tool 1, for example, as shown by a dotted line in FIG. 10B, if a wire such as a wire W is engaged with a fixing portion of the arc portion 2 a with respect to the base plate 3, The support 1 can be fixed to each other.

  FIG. 12 shows a state in which the leg L shown in FIG. 7 (B) supports the piano G whose shape is changed to a letter C by the support 1 in FIG. The angle between the support surface 5c on the B side of the support 1 and the center line of the leg L (support angle of the support 1) is such that α on the left side is an obtuse angle and β on the right side is 90 °. In FIG. 12, the left side of the piano G is a portion that generates a low tone, and the right side of the piano G is a portion that generates a high tone.

  When the support angle of the support tool 1 changes, the effect of suppressing the high frequency of the support tool 1 changes. For example, as shown in the figure, if the support angle α is an obtuse angle, the effect of suppressing the high frequency of the support 1 is great. Therefore, the sound becomes softer. On the other hand, as shown in the figure, when the support angle β is 90 °, the effect of suppressing high frequency is reduced. Therefore, the sound becomes harder. When the support angle is 90 ° and the support surface 5c is in point contact or line contact with the object to be supported as shown by a two-dot chain line in FIG. 6, the effect of suppressing high frequency is further reduced. In this case, if a lubricant such as oil is applied to the contact line or contact point of the support surface 5c, the effect of suppressing high frequency is minimized.

  Further, if the support angle α is an obtuse angle, the sound output is delayed. On the other hand, if the support angle β is 90 °, the sound comes out quickly. Therefore, there is a time difference between the low sound output and the high sound output depending on the mounting method. Thereby, the low-pitched sound and the high-pitched sound are separated, and each sound is easily recognized. The greater the support angle α, the slower the sound output, and the greater the degree of separation between low and high sounds in the way of attachment. That is, the degree of separation between the low-pitched sound and the high-pitched sound varies depending on the support angle α.

  As shown in FIG. 12, the caster 10 of the piano G is placed on the support 1 so that the wheel 12 is fitted to the arc portion 2 a of the support 1 via a gap. Thereby, when a shake such as an earthquake occurs, it is possible to suppress the caster 10 from being displaced with respect to the support 1 due to interference between the wheel 12 and the arc portion 2a.

  Furthermore, an example of the support 1 in which the inclination angle of the support surface 5c is fixed is shown in FIG. The support 1 also includes a support member 2 and a base plate 3 to which the support member 2 is fixed as main components. In the support 1, the support member 2 includes two arc portions 2 a extending in a substantially arc shape whose base ends are fixed to the base plate 3, and a support portion 5 that connects the distal ends thereof. The curvatures of the two arc portions 2a are different from each other. A flat support surface 5c is formed on the upper side of the support portion 5, and the support surface 5c is inclined at an angle θ with respect to the horizontal. This angle θ is, for example, 1 ° to 3 °.

  The support 1 having the support surface 5c shown in FIGS. 9, 10, and 13 with a fixed inclination angle is suitable for supporting the speaker S as shown in FIG. 14, for example. In addition, in FIG. 14, the support tool 1 is shown typically. In this case, as shown by a solid line in FIG. 14B, the support 1 may be disposed on each side of the rectangular lower end surface of the speaker S, or below the speaker S as shown by a two-dot chain line. The support 1 may be disposed at each corner of the end face. In any case, the support 1 is arranged so that the horizontal component force by the support surface 5c is directed toward the center of the speaker S in plan view. In this arrangement, the vibration of the speaker S in the horizontal direction is reduced. When the support 1 is arranged on each side of the lower end surface of the speaker S, the support surface 5c is in line contact with each side, and when arranged at each corner, the support surface 5c is relative to each corner. Point contact. Note that the speaker S is preferably supported by at least three or more supports 1.

  The sound quality of the speaker S can be changed by an amplifier. However, as described above, according to the support 1, the difference in sound quality can be made by supporting the lower portion of the speaker S with the inclined support surface 5c. Moreover, as shown in FIG. 14, if the support tool 1 is restrained mutually by tying with the wire W etc., it can prevent that the support tool 1 remove | deviates from the speaker S by shaking, such as an earthquake. Moreover, the sound quality of the speaker S can be changed continuously and steplessly by adjusting the tension of the wire such as the wire W.

  As described with reference to FIGS. 8, 11, and 14, the support device 1 of the present invention is usually used in a plurality, but a part of the support device 1 is a support device other than the present invention, that is, a support surface that is not inclined. It is good also as a support tool which has.

  The present invention is not limited to the above embodiment, and various modifications are possible within the scope of the technical idea. For example, in the above embodiment, the support 1 is used for the grand piano G and the speaker S, but other musical instruments such as an upright piano, organ, harpsichord, marimba, drum set, koto, keyboard harmonica, guitar, etc. May be used for

DESCRIPTION OF SYMBOLS 1 Support tool 2 Support member 3 Base plate 4 Bolt 5 Support part 5a Free end 5b Fixed end 5c Support surface 5d Curved surface G Grand piano P Contact position S Speaker

Claims (3)

A support device having a support portion on which a flat support surface for supporting a musical instrument or a speaker is formed,
In a state where a musical instrument or a speaker is supported, the support surface is inclined with respect to a horizontal plane,
A support member having the support portion, a base plate that is a separate body from the support member, and a spacer interposed between the support member and the base plate ,
Of the two opposing surfaces of the support member and the base plate, at least one of the opposing surfaces includes a curved surface,
By the spacers, the contact position can be changed in the opposite two surfaces on the curved surface, support the instrument or speaker, characterized in that the angle of inclination of the supporting surface can be changed. The opposing surface on the support member side of the two opposing surfaces is formed on the support part,
The instrument or speaker support according to claim 1 , wherein one end of the support portion is a free end, and the other end of the support portion is fixed to an attachment portion fixed to the base plate via the spacer. .   The opposing surface of the two opposing surfaces includes a curved surface, and the supporting portion has a portion where a distance between the curved surface and the supporting surface gradually decreases toward the free end toward the free end. The instrument or speaker support described.

Images