JP2015068895A - Keyboard lid device for keyboard instruments - Google Patents

Abstract

The present invention provides a keyboard lid device for a keyboard instrument that can flatten the entire top surface of the keyboard instrument when the keyboard lid is closed, thereby obtaining a clean and good appearance. A keyboard lid device for a keyboard instrument, which is provided on an upper part of a musical instrument body having a performance section including a keyboard and which closes the performance section and opens to an exposed state. A plate-like back roof 21 that is immovably provided in a horizontal state at the rear of the musical instrument main body 1, and is located on the front side of the back roof 21, and the upper surface of the back roof 21 is flush with the performance section 4 closed. A keyboard lid 23 that is movable between a closed position and an open position that is located above the back roof 21 and that opens the playing unit 4, and the keyboard lid 23 is rotated between the closed position and the open position. A hinge 22 connected to the back roof 21 in a possible state, and the hinge 22 is disposed below the upper surface of the keyboard lid 23 and the back roof 21 when the keyboard lid 23 is in the closed position. Yes. [Selection] Figure 1

Description

  The present invention is applied to a keyboard instrument such as an electronic piano, and relates to a keyboard lid device for a keyboard instrument that opens and closes a performance unit including the keyboard while the keyboard lid rotates.

  Conventionally, as a keyboard lid device for this kind of keyboard musical instrument, for example, the one described in Patent Document 1 already filed by the present applicant is known. This keyboard lid device is applied to an upright piano or the like, and includes a back roof and a keyboard lid that is pivotably connected to a front end portion of the rear roof via a hinge and opens and closes the keyboard. The keyboard lid device includes a rotary damper and a link mechanism that connects the keyboard damper to the rotary damper, thereby braking the keyboard lid that rotates in the closing direction.

  FIG. 3A shows the conventional keyboard lid device described above. As shown in the figure, in this keyboard lid device 41, a hinge 44 is provided between the front end face of the back roof 42 (left end face in the figure) and the rear end face (right end face in the figure) of the keyboard lid 43. It is attached in a state of being sandwiched. As shown in FIG. 3B, the hinge 44 includes a back roof side fixing plate 45 and a keyboard lid side fixing plate 46 in which cylindrical connecting cylinders 45a and 46a are formed at one end portion (the upper end portion in the figure). And a connecting shaft 47 that is loosely inserted into the connecting cylinders and connects both the fixing plates 45 and 46. In this hinge 44, the back roof side fixing plate 45 is screwed to the front end surface 42a of the back roof 42 by a screw 48, and the keyboard side fixing plate 46 is attached to the rear end surface 43a of the keyboard lid 43 and the back roof 42 side. The screw 49 is longer than the screw 48 (hereinafter referred to as “long screw”) 49.

  More specifically, with respect to the keyboard-side fixing plate 46 of the hinge 44, the above-described long screw 49 and the metal plate 50 having the screw hole 50a are used in order to firmly fix this to the keyboard lid 43. . That is, the metal plate 50 is embedded in a predetermined position of the keyboard lid 43, and a hole 43b extending from the rear end surface 43a to the metal plate 50 is formed in the keyboard lid 43. The long screw 49 is connected to the rear end surface 43a of the keyboard lid 43. Screw into the screw hole 50a of the metal plate 50 from the side through the hole 43b. As a result, the keyboard lid 43 is clamped between the keyboard side fixing plate 46 of the hinge 44 and the metal plate 50, and the keyboard lid 43 is firmly connected to the back roof 42 via the hinge 44. Then, the keyboard lid 43 is rotated about the hinge 44 and opened as shown in FIG. 4 when the front end is lifted.

JP 2003-177738 A

  In the above keyboard lid device, when the keyboard lid 43 is closed, as shown in FIG. 3, the upper surface of the keyboard lid 43 and the upper surface of the back roof 42 are horizontal and flush with each other. However, in this case, since the connecting shaft 47 of the hinge 44 and the connecting cylinders 45a and 46a of the two fixing plates 45 and 46 connected to the hinge 44 protrude from the space between the keyboard cover 43 and the back roof 42, the appearance is good. I can't say that. Further, when a piano user closes the keyboard lid 43 and spreads a musical score, notes, etc. and performs writing, the portion protruding above the hinge 44 may become an obstacle.

  The present invention has been made to solve the above-described problems, and can make the entire upper surface of a keyboard instrument flat when the keyboard lid is closed, thereby obtaining a clean and good appearance. An object of the present invention is to provide a keyboard lid device for a keyboard instrument.

  In order to achieve the above object, the invention according to claim 1 is a keyboard instrument provided on an upper part of a musical instrument main body having a performance unit including a keyboard, which is closed in a state of covering the performance unit and opened in an exposed state. The back cover and the upper surface of the keyboard cover device are located on the front side of the back roof, which is fixed in a horizontal state at the rear of the instrument body, and the performance section is closed. A keyboard cover that can be moved between a closed position that is flush with the open position that is located above the back roof and that opens the performance part, and this keyboard cover can be rotated between the closed position and the open position The hinge is connected to the back roof, and the hinge is arranged below the upper surface of the keyboard cover and the back roof when the keyboard cover is in the closed position.

  According to this configuration, the keyboard lid device is provided on the upper part of the musical instrument main body having the performance section including the keyboard. The back roof of this keyboard lid device is formed in a plate shape, and is provided in a stationary state at the rear part of the instrument body. The keyboard lid of the keyboard lid device is connected to the back roof via a hinge, and opens and closes the performance section while rotating between the closed position and the open position. Said hinge is arrange | positioned below the upper surface of a keyboard cover and a back roof when a keyboard cover is located in a closed position. For this reason, when the keyboard lid is located at the closed position, unlike the conventional case, the hinge does not protrude from the upper surfaces of the keyboard lid and the back roof, and the entire upper surface of the keyboard instrument can be made flat. Thereby, in the keyboard lid device in a state where the keyboard lid is closed, a clean and good appearance can be obtained.

  The invention according to claim 2 is the keyboard lid device of the keyboard instrument according to claim 1, wherein the hinge includes a back roof side fixing plate fixed to a front end surface of the back roof and a lower surface connected thereto, and a back of the keyboard lid. A keyboard cover side fixing plate fixed to the end surface on the roof side and the lower surface continuous therewith, and a connecting shaft that extends horizontally and connects the back roof side fixing plate and the keyboard side fixing plate to each other so as to be rotatable. At the end of the back cover side of the keyboard cover, it is formed so as to be connected to the upper surface of the keyboard cover and protrude toward the back roof side, and when the keyboard cover is in the closed position, the back roof side fixing plate and the keyboard cover side The cover part which covers the upper part of the site | part connected with the connection shaft of the fixing plate is provided.

  According to this configuration, the back roof side fixing plate of the hinge is fixed to the front end surface of the back roof and the two surfaces of the lower surface connected thereto, while the keyboard cover side fixing plate is connected to the end surface on the back roof side of the keyboard cover and Since the fixing plates are fixed to the two lower surfaces, the hinges can be firmly fixed to the back roof and the keyboard cover as compared with the case where the fixing plates are fixed to a single surface. In addition, since the cover portion is provided at the end on the back roof side of the keyboard lid, when the keyboard lid is in the closed position, the hinge cannot be seen from the user side in front of the keyboard instrument. In addition, the gap between the keyboard lid and the back roof can be reduced, and thereby a better appearance can be obtained in the keyboard lid device.

  The invention according to claim 3 is the keyboard lid device of the keyboard instrument according to claim 2, wherein the upper part of the front end of the back roof is interfered with the cover of the keyboard lid when the keyboard lid is rotated to the open position. An escape portion cut out so as to avoid is provided.

  According to this configuration, since the escape portion is provided at the upper front end of the back roof, when opening the keyboard cover, the keyboard cover is opened widely without causing the cover of the keyboard cover to interfere with the back roof. can do.

BRIEF DESCRIPTION OF THE DRAWINGS In the electronic piano to which the keyboard cover apparatus by one Embodiment of this invention is applied, it is a figure which shows the state by which the performance part is closed, (a) is a side view which shows the external appearance and the inside of a piano main body, (b). It is a figure which expands and shows the hinge of a keyboard cover apparatus, and its circumference | surroundings. In the electronic piano of FIG. 1, it is a figure which shows the state by which the performance part is open | released, (a) And (b) is the side view and figure similar to FIG. 1, respectively. It is a figure which shows the conventional keyboard cover apparatus, (a) is a side view, (b) is a figure which expands and shows the hinge of a keyboard cover apparatus, and its periphery. FIG. 4 is a diagram showing a state in which the keyboard lid is opened in the keyboard lid device of FIG. 3.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a piano body in which a keyboard lid device according to an embodiment of the present invention is applied to an electronic piano. As shown in FIG. 1A, the piano main body 1 (musical instrument main body) has an outer case 2 that forms the outer periphery of the piano main body 1 and a front side (left side of FIG. 1A) in the outer case 2. A performance unit 4 including the installed keyboard 3 and a keyboard lid device 5 provided at the top of the piano body 1 are closed to cover the performance unit 4 and open to an exposed state.

  The outer case 2 has a horizontally-long rectangular shelf 11 whose planar shape extends in the left-right direction (the front and back direction in FIG. 1 (a)), and a mouth stick provided upright at the front end and the rear end of the shelf 11, respectively. 12 and a back plate 13, and left and right side plates (not shown) erected on both ends of the shelf plate 11 in the left-right direction.

  The performance unit 4 is provided with a keyboard 3 having a large number of white keys 3a and black keys 3b arranged side by side in the left-right direction, and is tilted forward and downward above the keyboard 3 so that various performance related performances are provided. An operation panel 6 having a plurality of switches, buttons, etc. (none of which are shown) for executing the functions is used.

  The keyboard lid device 5 includes a back roof 21 provided at the rear portion of the piano body 1, and a keyboard lid 23 connected to the front end portion of the back roof 21 via a hinge 22. Each of the back roof 21 and the keyboard lid 23 is made of a wood material and is made of a plate material having a predetermined thickness. The back roof 21 is formed in a horizontally long rectangular plane shape, and is placed on the upper surfaces of the left and right side plates and the back plate 13 in a horizontal state and fixed immovably. In addition, the front half of the back roof 21 is cut off at the upper half, and when the keyboard cover 23 is opened, a relief part for avoiding interference with a cover part 23a described later of the keyboard cover 23. 21a is provided.

  On the other hand, the keyboard lid 23 has substantially the same lateral width as that of the back roof 21 and a depth dimension that is significantly longer than that of the back roof 21, and the planar shape is formed in a horizontally-long rectangular shape. A plate-like front 24 having a predetermined height is connected to the front end of the lower surface of the keyboard lid 23 via a hinge 25. Further, a cover portion 23a is provided on the upper rear end of the keyboard lid 23 so as to protrude a predetermined length toward the rear back roof 21 side and cover the connecting shaft 33 and the connecting cylinders 31a and 32a, which will be described later, of the hinge 22. .

  The hinge 22 includes a back roof side fixing plate 31 fixed to the front end portion of the back roof 21, a keyboard lid side fixing plate 32 fixed to the rear end portion of the keyboard lid 23, and both of these fixing plates 31 and 32. The connecting shaft 33 and the like are connected to each other so as to be rotatable. Both the fixing plates 31 and 32 are made of a predetermined metal plate, extend a predetermined length in the left-right direction, and have a side shape formed in an L shape. The connecting shaft 33 is loosely inserted into cylindrical connecting cylinders 31 a and 32 a provided at one end portions of the fixed plates 31 and 32, respectively. The back roof side fixing plate 31 of the hinge 22 is screwed to the front end surface 21b of the back roof 21 and the lower surface 21c connected thereto by screws 34 and 34, respectively. On the other hand, the keyboard side fixing plate 32 of the hinge 22 is screwed to the rear end surface 23b of the keyboard lid 23 and the lower surface 23c connected thereto by screws 35 and 35, respectively. These screws 34 and 35 are screwed into a plurality of locations at appropriate intervals along the length direction of the fixing plates 31 and 32 (front and back direction in FIG. 1).

  Although not shown, the piano body 1 is provided with a keyboard lid opening / closing mechanism having a predetermined rotary damper and link, and the keyboard lid 23 is rotated to the fully open or fully closed position by the opening / closing mechanism. It is designed to brake immediately before starting.

  In the keyboard lid device 5 configured as described above, the keyboard lid 23 is closed when the performance unit 4 is covered (the position shown in FIG. 1) and opened when the performance unit 4 is exposed. It opens and closes while rotating around the hinge 22 (connection shaft 33) between the position (the position shown in FIG. 2). When the keyboard cover 23 is located at the closed position, as shown in FIG. 1, the upper surfaces of the keyboard cover 23 and the back roof 21 are horizontal and flush with each other, and the cover 23a at the rear end of the keyboard cover 23 is provided. The connecting shaft 33 of the hinge 22 and the connecting cylinders 31a and 32a are covered. On the other hand, when the keyboard lid 23 is located at the open position, as shown in FIG. 2, the cover portion 23 a at the rear end of the keyboard lid 23 is accommodated in the escape portion 21 a provided at the upper front end of the back roof 21. Thereby, the keyboard lid 23 does not interfere with the back roof 21.

  As described above in detail, according to the present embodiment, the hinge 22 that connects the keyboard lid 23 to the back roof 21 is more than the upper surface of the keyboard lid 23 and the back roof 21 when the keyboard lid 23 is in the closed position. Located on the lower side. For this reason, when the keyboard cover 23 is located at the closed position, the hinge 23 does not protrude from the upper surfaces of the keyboard cover 23 and the back roof 21 unlike the conventional case, and the entire upper surface of the electronic piano can be made flat. Thereby, in the keyboard lid device 5 in a state where the keyboard lid 23 is closed, a clean and good appearance can be obtained.

  Further, the back roof side fixing plate 31 of the hinge 22 is fixed to the two surfaces of the front end surface 21b and the lower surface 21c of the back roof 21, while the keyboard cover side fixing plate 32 is the rear end surface 23b and the lower surface 23c of the keyboard cover 23. Therefore, the hinge 22 can be firmly fixed to the back roof 21 and the keyboard lid 23 as compared with the case where the fixing plates 31 and 32 are respectively fixed to a single surface. Since the cover 23a is provided at the upper rear end of the keyboard lid 23, the hinge 22 should not be seen from the user side in front of the electronic piano when the keyboard lid 23 is closed. In addition, the gap between the keyboard lid 23 and the back roof 21 can be reduced, and thereby a better appearance can be obtained in the keyboard lid device 5.

  Furthermore, since the escape portion 21 a is provided at the upper front end of the back roof 21, the keyboard cover 23 can be enlarged without causing the cover portion 23 a of the keyboard cover 23 to interfere with the back roof 21 when the keyboard cover 23 is opened. Can be opened.

  In addition, this invention can be implemented in various aspects, without being limited to the said embodiment described. For example, in the embodiment, the case where the keyboard cover device of the present invention is applied to an electronic piano has been described. However, the present invention is not limited to this, and can be applied to an upright piano and a grand piano as well as an electronic organ. Is possible. The detailed configuration of the keyboard lid device 5 shown in the embodiment is merely an example, and can be appropriately changed within the scope of the gist of the present invention.

1 Piano body (instrument body)
3 Keyboard 4 Performance part 5 Keyboard lid device 21 Back roof 21a Escape part 21b Front roof end face 21c Back roof bottom face 22 Hinge 23 Keyboard lid 23a Cover part 23b Keyboard lid rear end face 23c Keyboard lid bottom face 31 Back roof side fixing Plate 31a Connection tube 32 on the back roof side fixing plate Keyboard cover side fixing plate 32a Connection tube 33 on the keyboard cover side fixing plate Connection shaft 34 Screw 35 on the back roof side Screw on the keyboard cover side

Claims (3)

A keyboard lid device for a keyboard instrument that is provided on an upper part of a musical instrument main body having a performance unit including a keyboard, is closed in a state of covering the performance unit and is opened in an exposed state,
A plate-like back roof provided immovably in a horizontal state at the rear of the instrument body;
A closed position that is located on the front side of the back roof and in which the upper surface is flush with the back roof in a state where the performance section is closed, and an open position that is located on the upper side of the back roof and opens the performance section. Keyboard lid that can be moved between,
A hinge that connects the keyboard lid to the back roof in a rotatable state between the closed position and the open position;
A keyboard lid device for a keyboard instrument, wherein the hinge is disposed below the upper surface of the keyboard lid and the back roof when the keyboard lid is in the closed position. The hinge is
A back roof side fixing plate fixed to the front end surface of the back roof and the lower surface connected thereto;
A keyboard cover side fixing plate fixed to an end surface of the back cover side of the keyboard cover and a lower surface connected thereto;
A connecting shaft that extends horizontally and connects the back roof side fixing plate and the keyboard side fixing plate to each other in a rotatable manner;
An end of the keyboard cover on the back roof side is formed so as to be continuous with the upper surface of the keyboard cover and project toward the back roof side, and when the keyboard cover is located at the closed position, 2. A keyboard lid device for a keyboard instrument according to claim 1, further comprising a cover portion that covers an upper portion of the side fixed plate and a portion of the keyboard lid side fixed plate connected by the connecting shaft.   The upper part of the front roof is provided with a relief part cut out so as to avoid interference with the cover part of the keyboard cover when the keyboard cover rotates to the open position. The keyboard lid device for a keyboard instrument according to claim 2, wherein the keyboard lid device is a keyboard instrument.

Images