JP3445114B2 - Grand piano music stand tilting mechanism - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a music stand tilting mechanism for a grand piano. 2. Description of the Related Art As shown in FIG. 5, a music stand tilting mechanism for a conventional grand piano has a music stand a having a main holding rod b ₁ ,
b ₁ , the left and right plates b ₂ , b _2, and the original stand b ₃ , b ₃ , mounted on a music stand supporting portion b, which can be raised and lowered by a hinge c, and attached to the back surface by a hinge d. called, inclined at any angle by supporting member e made of a rectangular frame member of the upper end opening to said Torii engages in one of the present lifting Motoki b _3, b ₃ which is formed on a plurality of grooves f And stand upright. In addition, g is a side left and right plate fixed to the inner wall of the case side plate (not shown) and supporting the music stand supporting member by engaging the permanent holding left and right plates b ₂ , b ₂ with the grooves. [0003] In order to play a piano having a music stand tilting mechanism having the above-described configuration, the music stand a is raised and fixed at a predetermined angle with one hand. cause music stand a, it is necessary to engage the member e supported by the other hand to the present lifting Motoki b _3, b ₃ of the groove f, also lodging a music stand a, under the large roof of the case , It is necessary to hold the music stand a with one hand and remove the supporting member e with the other hand from the groove f of the original wood b ₃ , b ₃ . That is, it is necessary to operate the music stand with two hands. SUMMARY OF THE INVENTION It is an object of the present invention to provide a music stand tilting mechanism for a grand piano which can easily raise and lower the music stand with one hand. SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a music stand having a lower end movably mounted on a music stand supporting member, and a music stand mounted on the back of the music stand. An inclination setting first member having a long hole in which a plurality of grooves are formed in a vertical direction on an inner surface of the music stand side, and having a guide plate opposed to the plurality of grooves in an intermediate portion of the long hole; A support plate having one end swingably attached to the back surface of the music stand below the first inclination setting member and the other end slidable on the music stand support member, and an intermediate portion of the upper surface of the support plate Has a rod-shaped body which is swingably mounted at one end and which is inserted into a long hole of the first member for inclination setting and which can be engaged with the groove at the other end, and is turned in the direction of the music stand by a weak rotation force of a spring. 2nd for tilt setting to be energized
The second member for inclination setting is urged in the direction of the music stand by a weak rotational force of a spring to engage the rod with one of the plurality of grooves, and a free end of the support plate is provided. Is in contact with the music stand support member, the music stand is in an upright state at a desired inclination angle, the music stand is further raised, and the rod-shaped body is moved along one surface of the guide plate. wherein the Killing music stand from the bottom of the plurality of grooves from moving downward, <br/> said rod-like body that has moved to the other surface from one surface of the guide plate along the other surface of the guide plate moves upward, music stand by engaging the top of the groove, characterized in that set to be in the inclined state. When the music stand is raised with one hand from the lying state, the rod-shaped body of the music stand inclination setting second member is disengaged from the uppermost groove of the music stand inclination setting first member and is guided by one surface of the guide plate. If the movement is stopped at an arbitrary angle, the rod-shaped body urged in the direction of the music stand by the spring force engages with the corresponding groove of the first member, and the music stand becomes an arbitrary angle. It is set to the state of standing up. When lodging a music stand, after subtracting the music stand in front, defeating the rear, the rod-shaped body is guided on the other surface of the guide plate after moving it down the above its lowest part out of the groove And the music stand engages with the uppermost groove, so that the music stand is in an overturned state. An example of a music stand tilting mechanism of a grand piano according to the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a music stand, 2 denotes a main holding rod 2
a, 2a, a music stand supporting member comprising a left and right holding plate (not shown, but the same as a conventional one) and a lower plate 2b; and 3, a music stand inclination setting first member fixed to the back surface of the music stand 1. , 4
One end is attached to the back of the music stand 1 below the first member 3 by a hinge 5, and the other end is a support plate slidable on the lower plate 2b of the music stand support member 2, and 6 is a support plate. 4 is a second member for setting the inclination of the music stand, which is attached by a spring hinge 7 to an intermediate portion of the music stand 4 and is urged by a weak spring force in the direction of the music stand 1, wherein the music stand 1 is the first member 3, The two members 6 and the support plate 4 stand on the music stand supporting member 2 in a state of being inclined at an arbitrary angle, and can be stored under the large roof in a lying state. The structure will be described in more detail. As shown in FIG. 2, the first inclination setting member 3 comprises an L-shaped plate 3a and an inverted L-shaped plate 3b. When the plate 3a is bonded to the inverted L-shaped plate 3b, a long hole 8 is formed. A plurality of grooves 10 are formed in the inner surface 9 of the L-shaped plate piece 3a in the vertical direction, and a guide plate 12 has an inner surface on a protruding wall 11 formed at the right end of the inverted L-shaped plate piece 3b. 1
3 and is arranged in the middle of the elongated hole 8. As shown in FIG. 3, the second inclination setting member 6 includes an L-shaped plate piece 14 and a bar-like body 15 having one end fixed to a narrow portion above the plate piece and extending horizontally. And consists of The rod 15 is provided in the groove 10 of the first member 3.
The second member 6 is inserted and arranged in the elongated hole 8 of the first member 3 in a state where the second member 6 is attached to the support plate 4 by a spring hinge 7. As shown in FIG. 1, when the music stand 1 stands up near the maximum inclination angle, the bar 15 of the second member 6
Are engaged with the lowermost portion 10a of the groove 10 by a weak spring force of the spring hinge 7, for example, so that the support plate 4 abuts on the lower plate 2b and is supported. When the music stand 1 falls down as shown in FIG. 4, the music stand 1 is raised further by one hand. At that time,
The rod 15 is guided by one surface of the guide plate 12 from the lowermost groove 10a and moves downward as indicated by an arrow in FIG. 2A, and then the music stand 1 is lowered. , Guide plate 12
Is guided by the other side the rod-like body 15 is moved upward, and
Further, it is engaged with the uppermost groove 10b, so that it falls down. When the music stand 1 is raised with one hand in order to raise the music stand 1 from a lying state to an arbitrary inclination angle, the rod 15 escapes from the uppermost groove 10 b and is placed on one surface of the guide plate 12. is guided to move downward, when it reaches the desired tilt angle, when released, the rod-shaped member 15 engages the groove 10 in the vicinity at the rotational force by the weak spring of the spring hinge 7, music stand 1 Is supported by the music stand support member 2 at this inclination angle. The present invention has the effect that the music stand can be easily raised and lowered with one hand.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1A and 1B are a perspective view and a side view of a music stand tilting mechanism of a grand piano according to the present invention in a state where the music stand is upright. FIGS. 2A and 2B are a perspective view and an exploded perspective view of a first inclination setting member. FIG. 3 is a perspective view of a second inclination setting member. FIG. 4 is a side view of the music stand tilting mechanism of the grand piano according to the present invention in a state where the music is lying down. FIG. 5 is a perspective view of a music stand tilting mechanism of a conventional grand piano. [Description of reference numerals] 1 music stand 2 music stand support member 3 first member for tilt setting 4 support plate 6 second member for tilt setting 7 spring hinge 8 long hole 10 groove 11 protrusion Wall 12: guide plate 14: plate piece 15: rod-shaped body

Claims (1)

(57) [Claims 1] A music stand whose lower end is undulatingly mounted on a music stand support member, and which is attached to the back surface of the music stand and has a plurality of vertically extending inner surfaces on the music stand side. A first member for setting an inclination having a long hole in which a plurality of grooves are formed, and a guide plate facing the plurality of grooves in an intermediate portion of the long hole, and one end being located below the first member for setting the inclination. A support plate slidably mounted on the back surface of the music stand, the other end slidably mounted on the music stand support member, and one end slidably mounted on an intermediate portion of the upper surface of the support plate. A second member for tilt setting, which has a rod-shaped body inserted into a long hole of the first member for tilt setting and engageable with the groove at an end, and is biased in the direction of the music stand by a weak rotation force of a spring; Wherein the second member for inclination setting is urged in the direction of a music stand by a weak rotation force of a spring, and Engages one of the plurality of grooves, by the free end of the supporting plate comes into contact with the music stand support member, ready to music stand is erected at a desired tilt angle, further upright music stand Moving the rod-like body below the lowermost portion of the plurality of grooves along one surface of the guide plate and then lowering the music stand, thereby moving the rod from one surface of the guide plate to the other surface. /> Symbol rod-like body along the other surface of the guide plate is moved upward, the music stand of grand piano music stand by engaging the top of the groove, characterized in that was set to the inclined state Tilt mechanism.