JP2004302419A - Electronic keyboard musical instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a keyboard musical instrument having a structure with a large flexibility in design without generating restrictions caused by a front panel which is fixed in an upright condition. <P>SOLUTION: The electronic keyboard musical instrument is provided with a keyboard which is to be played and operated, front and back covers which are divided and located in the front and the back in a closed condition, a cover unit which opens the top of the keyboard while the front and the back covers are folded in an open condition and a musical instrument body which stores the keyboard and a musical sound generating means. Top sections of the front and the back covers are respectively coupled by hinge sections in a freely rotative manner. The back end section of the front cover is supported by turnably supporting sections fixed to the main body turnably at the portions below the hinge sections. The back cover is turnably supported by guiding mechanisms provided on side plates along the front and the back directions. A top plate provided on the main body is arranged so as to be located below the tip end section of the front cover which is in an open condition. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electronic keyboard instrument such as an electronic piano and an electronic organ.

  If the keyboard cover is made large, a force is required at the time of opening and closing, and there is a problem in safety at the start and end of opening and closing. One of them is disclosed in Japanese Patent Application Laid-Open No. H11-175053 (Patent Literature 1), which has a structure in which, when the cover is opened, the cover turns and retreats. In this case, as shown in FIGS. 11A and 11B, a keyboard cover that extends substantially horizontally in a closed state is divided into a front cover 106a and a rear cover 106b, and both are connected by a hinge member 107. An arm 108 is provided on the front lid 106a and extends downward from the rear end at both side ends, and the arm is rotatably supported by a rotation shaft 114a. The rear end of the rear lid 106b is slidably supported by the mountain plate 103. Thus, when the keyboard cover is opened, the front cover 106a rotates about the pivot of the arm 108, and the movement of the front cover causes the rear cover 106b to slide rearward via the hinge member 107. Let it. Behind the keyboard cover, a front panel having substantially the same height as the depth dimension of the keyboard cover is fixed in an upright state, and when reaching the fully open position, the front cover is provided on the side panel so as to rise to the front panel side. It is supported in contact with the stopper 124.

  However, this keyboard instrument has a structure in which the front panel is fixed in an upright state and covers the upper portion of the instrument body, and the keyboard lid is set at the height of the front panel when opened. ing. Therefore, the front panel rises from the rear of the keyboard cover, and the top plate is located at a high position, which is bulky in the height direction, and gives a sense of oppression during the performance.

In addition, the position of the top plate is lowered to lower the front panel, or as a structure that enables the omitted structure, the entire keyboard cover is slidably supported in the front-rear direction, and the keyboard cover is moved rearward in the open state. Some of them were stored under the top plate, and others were slide lids that rolled back the keyboard lid in the open state. However, such a structure lacks a sense of quality of a rotary keyboard cover derived from an acoustic piano. Further, when the keyboard cover is opened, it is not a lifting operation as in the case of a rotary type, but an operation of pushing it under the top plate, which is disadvantageous in that the operability is poor.
JP-A-11-175053 (paragraphs 0016 to 0030, FIGS. 1 to 3)

  The present invention solves the above-mentioned problems, and provides an electronic keyboard instrument having a structure in which the height of the instrument body is reduced by suppressing the size above the keyboard lid to be low, and a pivotable keyboard lid can be provided. The purpose is to do.

  In order to achieve the above object, the present invention includes a keyboard to be operated and a front cover and a rear cover divided so as to be located side by side in a closed state, wherein the front cover and the rear cover are folded open. An electronic keyboard instrument comprising a cover unit that opens the upper part of the keyboard in a state, and an instrument body that houses the keyboard and musical sound generating means, wherein each of the front cover and the rear cover has its upper part turned by a hinge. The rear end of the front cover is rotatably supported, and a portion below the hinge portion is rotatably supported by a rotation support portion fixed in the instrument body, and the rear cover is provided on a side plate. The instrument is supported so as to be movable in the front-rear direction by the provided guide mechanism, and the top plate provided on the musical instrument main body is provided so as to be located below the front end of the front cover in an open state. Special It is desirable to provide an electronic keyboard musical instrument to be.

  As described above, in the electronic keyboard instrument according to the present invention, the portion from the keyboard to the top plate or the vicinity thereof is covered by the cover unit including the front cover and the rear cover. Therefore, the form of the range from the keyboard to the top plate or its vicinity can be freely determined by the front cover and the rear cover. Also, as the cover unit transitions from the closed state to the open state, the rear cover moves rearward, and in the open state, the front cover replaces the rear cover and covers a lower portion from near the front end of the top plate. be able to. In this case, even if the form of the range is determined in various ways, the front cover that has reached the open state covers the lower portion from near the front end of the top plate in place of the rear cover, so that it protrudes greatly upward from the top plate. There is no such thing. Thereby, an excellent design can be obtained without being restricted by the front panel fixed in the upright state. Further, the top plate is provided so as to be located below the front end portion of the front cover in an open state, so that the top plate is at a low position and the height of the entire instrument main body can be kept low. .

  In the electronic keyboard instrument, when the cover unit is in an open state, a functional member with electric wiring may be attached to the front cover so as to face the player. This eliminates the need to provide a space between the keyboard and the top plate for disposing functional components necessary for the electronic keyboard instrument, thereby reducing the length of the musical instrument in the depth direction, and also allowing the functional components to be placed in a non-functioning state. Can be protected. Also, functional members with electrical wiring may require inspection or adjustment during manufacturing or maintenance, but according to this structure, when the rear cover is turned forward by removing the top plate, etc. Since the rear of the front cover opens greatly, inspection and adjustment of the electric wiring portion can be easily performed through the opening. The keyboard lid on which the functional member is mounted often increases in thickness. However, according to the structure of the present invention, even when the cover unit is opened, the thickness of the front cover comes out forward or the rear cover becomes thicker. In other words, there is no need for a storage space of the same thickness. The upper part of the front cover and the rear cover are rotatably connected to each other by a hinge part, and the rear end part of the front cover has a part below the hinge part by a rotation support part fixed in the instrument body. Due to the structure that it is supported rotatably. That is, even when the thickness of the keyboard cover is increased, when the open cover is reached, the front cover rotates so as to move the upper surface in the closed state rearward around the pivot support point, and the rear cover also rotates. And move backward. Therefore, the thickness of the front cover causes a rearward moving portion in the open state, but the rear cover moves rearward with this, so that there is no need for an accommodation space for the thickness behind. . The upper surface of the front cover in the closed state moves rearward when shifting to the open state, so that the thickness of the front cover does not come forward.

  The functional member may be a speaker and may be built in a front cover. This allows the player to directly and accurately listen to the music sound from the speaker built into the front cover, not from the rear speakers of the instrument body or external speakers at other places, when playing with the cover unit opened. . In addition, since the speaker is built in the front cover, the upper portion is covered by the front cover in the closed state. Therefore, there is a problem in a case where a speaker is mounted upward on a fixed portion of a musical instrument body or the like and covered with a net made of cloth or the like, that is, dust penetrates from the net and accumulates on a diaphragm or a vibrating portion, which is not good for sanitation. In addition, it is possible to solve the problem that the function of the speaker may be hindered. Further, the functional member may include an electronic display unit such as a liquid crystal display in addition to the speaker.

  Further, the present invention provides an electronic keyboard musical instrument having a plurality of operators on a musical instrument body, a cover unit covering the operators, and an upper surface of the musical instrument body comprising the cover unit and a top plate, wherein the cover unit is A front cover and a rear cover that are divided so as to be located side by side in the closed state, and the front cover and the rear cover are hinged so as to open the upper side of the operation element in a folded open state. The front cover is rotatably connected, and the front cover is rotatable by a rotation support portion in the musical instrument main body on both outer sides of the plurality of operators, and the rotation support portion is separated from the hinge portion. A rear end portion of the rear cover, which is located below, has a buffer that allows movement of the rear cover when the opening and closing operation of the cover unit is performed about the hinge portion and the rotation support portion as a rotation center. Is rotatably supported on one end of a link member which acts as a timber, the other end of the link member also provides an electronic keyboard instrument, characterized by being supported near the bottom of the top plate in the instrument.

  That is, the link member functions as a guide member at the rear portion of the rear cover, but the components required for the function of the guide member are operated by mutual rotational motion, so that sliding friction when accompanied by a sliding operation is reduced. Absent. Therefore, it is advantageous to realize smooth opening and closing of the cover unit.

  The present invention also provides an electronic keyboard musical instrument having a plurality of operators on a main body of a musical instrument, a cover unit for covering the operators, and a load reducing means for reducing a load of the cover unit due to its own weight when the cover unit is opened and closed. In the above, the cover unit includes a front cover and a rear cover that are divided so as to be located side by side in the closed state, and the front cover and the rear cover open the operation element in a folded open state. The front cover is rotatably supported by a hinge portion, and the front cover is rotatably supported by a rotation support portion in the musical instrument main body at both outer ends of the plurality of operators. Is located below the hinge portion, and the load reducing means increases resistance to approaching the cover unit as it approaches the fully open or fully closed position. And an elastic member coupled to the front cover at one end coupled to the instrument body and at the other end separated from the hinge in a direction transverse to the longitudinal direction of the hinge. We also provide keyboard instruments.

  Thus, the force required to support the free end of the front cover can be made more uniform over the range of rotation, and is particularly required when the cover unit approaches the fully open or fully closed position. A significant increase in front cover support force can be avoided. In particular, the front cover to which the functional member is attached often increases in weight, and accordingly the front cover supporting force required when approaching the fully open position or the fully closed position also increases. The benefits are great.

  As described above, according to the electronic keyboard instrument of the present invention, the height of the instrument main body can be reduced by suppressing the size above the keyboard lid to be low, and the rotary keyboard lid can be provided. It is possible to provide an electronic keyboard instrument having a structure that solves the above problems.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings used for description, the same or similar parts are denoted by the same reference numerals, and description thereof may be omitted.
(1st Embodiment)
1 to 4 show a first embodiment in which the present invention is applied to an electronic keyboard instrument. 1 to 3 are longitudinal side views of the electronic keyboard instrument 1, wherein FIG. 1 shows a cover unit also serving as a keyboard cover closed, FIG. 2 shows an open state, and FIG. 3 shows an intermediate state between them. I have. FIG. 4 partially shows a state where the cover unit of the electronic keyboard instrument 1 is opened.

  The electronic keyboard instrument 1 includes a white key 3 and a black key 4, electronic circuits (not shown) for generating and controlling musical tones, and the like. The case 10 includes a shelf plate 5 forming a bottom portion, a mouthpiece 6 covering a front end surface on the player side, a back plate 7 standing upright on a back portion, side plates 8 on both right and left sides, and a top plate 9 covering an upper surface. , A speaker box 14 accommodating the main speaker 13, legs 19 extending downward from the shelf 5, and the like. The speaker box 14 is attached to the lower surface of the shelf 5 at the center in the key arrangement direction, and the legs 19 are connected to the front ends of the shelf 5 and the center of the rear. In this case 10, an electronic circuit for generating and controlling a musical tone, a switch, a controller, a power supply, a connection terminal and the like for the electronic circuit are mounted.

  The keyboard and its rear part are covered by a cover unit 30. The cover unit 30 includes a front cover 31 and a rear cover 32, which are divided into front and rear parts and are foldably connected to each other. Cover the front end of the keyboard and open the upper part of the keyboard in the folded open state.

  The front cover 31 and the rear cover 32 are rotatably connected to each other by hinges 33 at the upper portions thereof. The hinge portion 33 is in the form of a hinge extending continuously between the left and right ends of the front cover 31 and the rear cover 32. However, the hinge portion may be formed in various forms such as a flexible member extending between the front cover 31 and the rear cover 32 and rotatably connecting the front cover and the rear cover.

  The front cover 31 has a thickness for accommodating functional members such as the speaker 34, and the hinge portion 33 is attached to a position serving as a rear upper end in a closed state. Is supported by the side plate 8 via the rotating device 40. More specifically, in the closed state, the front cover 31 includes an upper wall 31a located on the upper surface, a front wall 31b hanging down from the tip thereof, and a lower wall 31c located on the lower surface, and these cover the entire keyboard. It extends in the key arrangement direction with the length. The lower wall 31c functions as a control panel on which various control elements for setting tone control parameters such as tone and effect when the lid is opened and various parameters for automatic performance and play assist are set. A liquid crystal display 31k used at the time of setting an operation element is disposed at the center in the left-right direction. The upper wall 31a and the lower wall 31c, and the front wall 31b and the lower wall 31c are mutually connected by connecting members 31e and 31f, respectively.

  The lower wall 31c extends rearward from the upper wall 31a in the closed state, and has a fitting hole 31h as a rotation fulcrum for the rotation device 40 provided on the side plate 8 at both ends of its rear end. The mounting plate 31g is fixed. In detail, the fitting hole 31h of the mounting plate 31g is held on the front cover 31 side, and a rectangular shaft 42 protruding inward from the rotation support portion 41 of the rotation device 40 provided on the side plate 8. The front cover 31 is rotatable with respect to the main body.

  The rear cover 32 moves in conjunction with the rotation of the front cover 31. A guide mechanism 50 for guiding the operation of the rear cover 32 is provided on the main body side. The guide mechanism 50 is provided with a guide groove 51 provided in the side plate slightly below the top plate 9 directly or via another member and extending substantially horizontally, and an introduction groove 52 communicating from the guide groove 51 to the top end of the top plate. . At the rear end portion of the rear cover 32, an introduction groove 52 is provided which extends from the guide groove 51 to the upper end of the top plate, and a support plate 54 for supporting an engaging pin 53 fitted in the guide groove 51 is attached. When the front cover 31 is opened and closed, the guide groove 51 functions as a sliding guide for the engagement pin 53, and guides the back and forth movement of the rear cover 32. Instead of the above arrangement, the mounting members in the guide mechanism 50 and the rear cover 32 may be reversed, and the guide groove 51 may be provided in the rear cover 32 and the engaging pin 53 may be provided in the side plate 8. Further, the guide groove 51 can be formed by various paths for guiding the movement of the rear cover 32 via an engagement pin 53 as an engagement member. For example, if the route to be guided is linear, the operating range of the rear cover 32 is also linear. In this way, the route to be guided can be set in a desired form, so that the operation can be rationalized and the instrument body can be made compact.

  The side plate 8 is further provided with a turning device 40 that serves as a turning fulcrum when the front cover 31 opens and closes. The rotation device 40 has a well-known damper function including a shaft 42 that protrudes from the side plate 8 and rotates, and a rotation support portion 41 embedded in the side plate 8 and rotatably supporting the shaft 42. . In the rotation device 40, when the shaft 42 rotates in the rotation support portion 41, resistance is given to the rotation of the shaft 42 by the contact resistance of the internal member of the rotation support portion 41, and the rotation operation is slowed down. Is done. On the other hand, the front cover 31 is provided with a mounting plate 31g as a rotating piece, and the shaft 42 is fitted in the fitting hole 31h. A suitable resistance is given to the turning operation of. The action of slowing down the operation is such that when the front cover 31 is closed, it acts strongly, so that the cover unit 30 can be prevented from being rapidly closed due to its weight.

  The rotation device 40 is provided below the hinge part 33. This allows the front cover 31 to move rearward along with the opening operation with the distance between the rotation support portion 41 and the hinge portion 33 as a radius, thereby opening the keyboard portion below the front cover 31 widely (see FIG. 2). . In order to increase the open range, it is desirable that the rotation device 40 be disposed below and behind the hinge portion 33. With this arrangement, in this example, in the closed state of the cover unit 30, the joint portion between the front cover 31a and the rear cover 31b is positioned above the keyboard, and in the open state, the front cover 31a and the rear cover 31b are positioned above the keyboard. Retract to the open position.

  In the cover unit 30, in the closed state, the connecting portion of the front cover 31 and the rear cover 32 is located above the keyboard, and in the open state, the front cover 31 and the rear cover 32 retreat to a position where the upper part of the keyboard is opened. It can be configured as follows. The front cover 31 and the rear cover 32 are rotatably supported by a hinge portion 33 and a rotation support portion 41 below the hinge portion 33. As a result, when the front cover is open, the top plate replaces the rear cover. Is configured to cover a lower portion from the vicinity of the front end. At this time, if the dimension in the front-rear direction in the closed state is large, the front cover 31 may protrude upward from the top plate 9 when opened. If the dimensions of the front cover 31 are determined so that the joint portion between the front cover 31 and the rear cover 32 is located above the keyboard, the dimensions of the front cover 31 are limited. It is possible to reliably adopt a configuration in which a portion below the front end of the top plate 9 is covered. Note that the fitting 31h as the rotation fulcrum is preferably below the hinge 33, and the hinge 33 is preferably before the rotation fulcrum.

  When the cover unit 30 reaches the open position, stoppers 61 and 62 are provided on the side plate 8 to stop the movement by coming into contact with a portion of the front cover 31 near the rotating device 40 and a portion of the rear cover 32 near the hinge portion 33. Is provided.

  The front cover 31 and the rear cover 32 are supported so as to open and close by the hinge portion 33, the rotating device 40, and the guide mechanism 50. As the cover unit transitions from the closed state to the open state, the rear cover 32 While moving backward, its front end is lowered. Thus, in the open state of the cover unit, the front cover 31 is configured to cover the lower portion from near the front end of the top plate instead of the rear cover 32.

  In this embodiment, a speaker 34 is further built in the front cover 31. For this reason, the upper wall 31a and the lower wall 31b of the front cover 31 are connected to each other by a connecting member 31e at an interval to form a housing space. The speaker 34 is fixed to a mounting plate 31i coupled to the lower wall 31b with screws or the like, is connected to a musical sound generating means in the case by a connection line (not shown), and emits sound together with the main speaker by operating a key or a control. It has become. The diaphragm of the speaker 34 faces the lower wall 31b, so that when the cover unit is opened, the sound radiation direction is directed to the player. However, the direction of the diaphragm of the speaker itself does not necessarily have to face the lower wall. For example, the speaker is arranged toward the upper wall 31a, passes through the space in the front cover 31, and faces the lower wall 31b, that is, the player's side. Sound radiation may be directed to the On the front cover 31, various functional members such as a speaker, a switch for tone control, a display such as a liquid crystal display, and the like are operably mounted on a panel surface (lower wall 31c). 1 and 2, broken lines 31m and 31n indicate wiring from the liquid crystal display 31k and the speaker 34 as the functional members, respectively. As is clear from the figure, the wirings 31m and 31n are disposed between the stoppers 61 and 62, and are disposed so as to be located in front of the hinge 33 when the lid is opened.

  As a result of incorporating the functional member, the front cover 31 is thicker than usual. In the open state, the front cover 31 is pivoted sufficiently rearward to reach the open state so that the thickness does not protrude toward the performer and does not impair the design or function. It is desirable to do. For this purpose, it is desirable that the hinge member 33 reach a position below the fulcrum by the rotating device 40 in the open state. This is particularly effective when the rear cover is greatly inclined rearward or substantially horizontal with respect to the substantially horizontal front cover in the closed state. When the cover unit 30 is in the closed state, the front cover 31a and the rear cover 31b are curved upward in a side view and are arranged substantially linearly, and when in the open state, the front cover 31a rotates rearward and It takes a position close to the cover 31b.

  In this example, a buffer mechanism 70 as shown is further provided for opening and closing the cover unit 30. The buffer mechanism 70 is provided at a rear portion of the cover unit 30 at both ends in the key arrangement direction, and provided with a locking portion 71, which locks one end of an elastic member 72 such as a tension coil spring. The end is locked to a pin 73 on the shelf 5. These arrangements are determined so that the amount of extension of the elastic member 72 is large when the cover unit 30 is opened and closed, and the amount of extension is small at an intermediate position. FIGS. 1 and 2 show the elastic member 72 with the cover unit 30 closed and opened, respectively. 3, the position of the elastic member 72 when the cover unit 30 is closed and in the open state is indicated by an imaginary line, and the position of the elastic member 72 at an intermediate position is indicated by a broken line. As described above, since the elastic force of the elastic member 72 acts greatly when the cover unit 30 is in the most opened state and in the completely closed state, the cover unit becomes larger in the opposite direction to its operation as it approaches the open position and the closed position. Receives elastic force. As a result, the cover unit is prevented from suddenly opening or closing due to its own gravity, and the danger of pinching a finger during opening and closing operations is avoided. In particular, when the weight of the lid body is increased by accommodating a functional member such as a speaker, the role of the buffer mechanism plays a large role.

  As described above, the elasticity of the elastic member 72 fulfills a damper function for opening and closing the cover unit. It is preferable that the damper function acts more strongly when the lid is closed. When the damper function is strongly applied when the lid is closed as described above, the amount of extension of the elastic member 72 is not symmetrical between when the lid is closed and when the lid is opened. However, the damper function of the rotating device 40 may be adjusted so that the damper function acts more strongly when the lid is closed. In this case, the amount of extension of the elastic member may be symmetrical when the lid is closed and when the lid is opened. That is, as shown in FIG. 3, the position of the elastic member 72 is substantially line-symmetrical when the lid is opened and when the lid is closed, and the elongation amount is also substantially the same.

  A locking member such as a pin 73 for supporting the elastic member is provided on the shelf plate 5 as shown in the drawing, or on the side plate 8, for example, directly or through another member at various places of the musical instrument body. Can be provided.

  In this embodiment, the rotating device 40 provided with the rotating support portion 41 is provided on the musical instrument main body case 10 side (the side plate 8 side). However, the present invention is not limited to this. . That is, a rotation device similar to the rotation device 40 may be fixed at the rear end of the front cover 31 as a rotation fulcrum, and a mounting plate similar to the rotation piece may be fixed to the instrument body case side.

  When the cover unit 30 is in the closed state, the front cover 31 and the rear cover 32 are arranged substantially linearly in a side view, and at least the rear cover of the front cover and the rear cover is substantially formed by a curved surface that is convex upward. The entire structure can be configured such that the front cover pivots rearward and assumes a position close to the rear cover when in the open state. According to such an embodiment, the range from the position above the keyboard cover covered by the cover unit to the top plate is formed in a substantially linear shape, and at least the rear cover of the front cover and the rear cover is upwardly convex. Since the entire surface is constituted by the curved surface, the overall height of the electronic keyboard instrument can be kept low.

(Second embodiment)
5 and 6 show a second embodiment in which the present invention is applied to an electronic keyboard instrument. FIG. 5 shows a state where the front cover is closed, and FIG. 6 shows a state where the front cover is opened. In an electronic keyboard instrument 1 'shown as this embodiment, the case of the instrument body includes a shelf plate 5, a mouthpiece 6, a back plate 7, a side plate 8, and a top plate 9 as in the previous example. However, in this embodiment, the front cover 12 forming the cover unit 20 covers the keyboard (white key 3, black key 4) and functions as a keyboard cover (lid), and the rear cover 11 is It is provided so as to be inclined upward from the rear end to the rear, and functions as a front plate that covers the surface of the instrument body on the player side. In addition, a hanging plate 10 that is shortly hung from the front end of the top plate 9 is provided.

  In the electronic keyboard instrument 1 ', the speaker 14 is housed inside the front cover 12 so that the sound emission surface faces the player when the lid is opened as an example of a functional member. The speaker 14 is connected to a tone control device in the case by a connection line (not shown), and emits sound together with a built-in speaker or an external speaker by operating a key or a control.

  By the way, in many conventional electronic keyboard musical instruments, a rear end portion of a keyboard lid is supported by a rotation shaft fixed to the main body of the musical instrument, and can be opened and closed by rotating around the rear end of the keyboard cover. Therefore, when a speaker is to be installed on the keyboard cover, a structure as shown in FIG. 12 is taken, for example. FIG. 12A shows the keyboard instrument 200 with the keyboard cover 201 closed. 203 and 204 are a white key and a black key, respectively. FIG. 12B shows a state in which the keyboard cover is opened. As shown, the keyboard lid 201 is supported by the front plate 202 in a substantially upright state. In this state, the speaker 210 faces the player, so that the player can directly listen to the musical sound from the speaker 210.

  However, in such a structure, the keyboard lid 201 has a thickness necessary for accommodating the speaker, and when the keyboard lid is closed, the thickness is conspicuous and the design is impaired. Further, a horizontal portion 205 for receiving the thickness when the cover is opened and raised is interposed between the cover 201 and the front plate 202, and has a depth dimension corresponding to the length L1, that is, the cover. The distance L0 between the front end and the front plate becomes longer, which impairs the appearance. Further, a step or a recess corresponding to the thickness of the keyboard cover may be formed between the keyboard and the front plate, and a problem may occur in that an object falls into such a step or the recess to make it difficult to take out.

  Further, in the case where the upright keyboard cover is received between the both side plates, it is necessary to retreat the front panel larger than the front edge of the side plate in order to receive the thick keyboard cover. As a result, when the keyboard cover is closed, a large step is generated between the front edge of the side plate and the front panel, and the design is extremely poor.

  The same problem occurs when the keyboard cover is made thicker by incorporating it even with functional members other than the speaker. Therefore, an electronic keyboard instrument having a structure that does not cause a problem of an increase in the depth dimension even when a functional member such as a speaker is incorporated is desired.

  On the other hand, the mounting structure of the cover unit 20 in this embodiment is as follows. A rear cover 11 is provided to cover the player's side of the instrument body. In order to support this, link members 16 are rotatably supported on rotation fulcrums 15 fixed to the left and right side plates 8 respectively, and the rear ends of the rear cover 11 on both the left and right sides are free of the link members 16. It is rotatably connected to the end by a pin 17, and these constitute a guide mechanism.

  In this embodiment, the pin 17, which is a connecting portion between the link member 16 and the rear end of the rear cover 11, is located above the pivot 15 of the link member 16. Thus, the rear end of the rear cover 11 can be positioned above the top plate 9, which is preferable in terms of securing a storage space in the case and appearance. However, the pin 17 can be located below the pivot 15 of the link member 16.

  The front end of the rear cover 11 is rotatably connected to the rear end of the front cover 12 by a hinge member 18. The hinge member 18 extends continuously between the left and right ends of the front cover 12 and the rear cover 11. The front cover 12 has a thickness for accommodating a speaker, which will be described later. The hinge member 18 is attached to a position that becomes a rear upper end in a closed state. The pin 21 is rotatably supported by the side plate 8 (the pin 21 may be connected to the side plate 8 directly or via another member).

  As described above, the case (side plate 8) that supports the rear cover 11, the link member 16, the thickness direction portion at the rear part of the front cover 12, and the rotation fulcrum 15 of the link member 16 and the pin 21 of the front cover 12 is provided. Each of the links constitutes a four-bar rotary link mechanism. As a result, as the front cover 12 transitions from the closed state to the open state, the rear cover 11 moves rearward, and the front cover 12 stands up and is located in front of the rear cover 11. In the open state, the front cover 12 Instead of the rear cover 11, a portion below the front end of the top plate 9 is covered. That is, the link member 16 functions as a guide member for the rear portion of the rear cover 11 with respect to the operation of the rear cover 11.

  In the opened state, the front cover 12 is supported by the hanging plate 10 with a slight inclination obliquely rearward. At this time, the sound emitting surface 14 faces the player. The front cover 12 has a portion that covers the speaker with a net or a porous material made of cloth or the like so as not to impede sound radiation from the speaker 14. This allows the player to directly listen to the musical sound from the speaker 14 at the same time as the musical sound emitted from the speaker installed at the back of the musical instrument main body or the external speaker installed outside the musical instrument main body. You can listen to it.

  In this lid mounting structure, as the front cover 12 moves down to the horizontal position, the rear cover 11 moves up as a whole. That is, when the front cover is closed, the lowering of the center of gravity of the front cover and the raising of the center of gravity of the rear cover 11 act so as to cancel each other out, and there is a rotation range in which acceleration of the lowering operation of the front cover 12 is eased.

  Further, for opening and closing the front cover 12, a buffer mechanism as shown can be provided. This cushioning mechanism is provided at a rear portion of both ends of the front cover 12 in the key arrangement direction with a locking portion 23, which locks one end of an elastic member 22 such as a coil spring, and the other end of the elastic member 22. Is locked to a pin 24 on the side plate 8. The pin 24 is provided at a position where the extension of the elastic member 22 becomes asymmetric. That is, these arrangements are determined so that the amount of extension of the elastic member 22 is large when the front cover 12 is opened and closed, and the amount of extension is small at the intermediate position. FIG. 5 shows the elastic member 22 when the front cover 12 is closed. In FIG. 6, the position of the elastic member 22 when the front cover 12 is open is indicated by a solid line, and the position of the elastic member 22 in the closed state and the intermediate position is indicated by a chain line. As described above, since the elastic force of the elastic member largely acts when the front cover is in the most opened state and in the completely closed state, the front cover has a large elastic force in a direction opposite to the operation as the position approaches these open and closed positions. Receive. As a result, similarly to the first embodiment, the front cover is prevented from rapidly opening or closing due to its own gravity, and the danger of pinching a finger during opening and closing operations is avoided. A locking member such as a pin 24 for supporting the elastic member is provided on the side plate 7 as shown in the figure, or provided on the shelf plate 5 at various places of the musical instrument body directly or via other members. Can be.

(Third embodiment-interlocking structure with music score device)
Hereinafter, a third embodiment of the present invention will be described. In the electronic keyboard instrument according to the present invention, as described below, a musical score device provided on a top board is disposed so as to move in the depth direction of the top board in conjunction with opening and closing operations of a cover unit. Things. With this configuration, even when the music stand is not used, the music plate device can be accommodated within the depth of the top plate. Here, the operating elements refer to all keyboards of an electronic keyboard musical instrument, and overall operating sections such as operating terminals of a control device for controlling the operation of musical instruments and musical sounds.

  In such an electronic keyboard instrument, preferably, the electronic musical instrument further comprises a connecting means for connecting the cover unit and the music score plate device, and the music score plate device opens the cover unit via the connection means. The cover unit is slidably moved in conjunction with opening and closing of the cover unit so as to slide in the depth direction of the top plate and to slide in the front direction of the top plate when closing. By such a connecting means, the movement of the cover unit and the movement of the music score plate device are reliably linked.

  Further, when the cover unit is moved in the depth direction of the top plate by the opening and closing operation of the cover unit, the connecting means adjusts the entire moving distance of the cover unit by the movement of the music plate device. It is preferable to have a function of transmitting only a part of the moving distance of the cover unit (or a part of the cover unit), instead of transmitting the distance. This greatly increases the degree of freedom in designing the length of the musical score plate device in the depth direction and the depth length of the top plate.

  Further, in the electronic keyboard instrument according to the present invention, it is preferable that a substantial effective length in a depth direction of the musical score plate device is configured to be longer than a depth length of the top plate. That is, the length of the musical score plate device, that is, the height of the music stand is made larger than that of the conventional musical instrument, as compared with the depth of the normal top plate (about 250 mm). As a result, the stability when the music score or the like is set up on the music score plate device is increased. Specifically, it is preferable that the substantial effective length in the depth direction of the music score plate device is secured to about 300 mm.

  From another point of view, in the electronic keyboard instrument according to the present invention, it is preferable that the depth of the top plate is configured to be shorter than the substantial effective length in the depth direction of the music score plate device. That is, when the length of the music plate device (the height of the music stand) is a general one (about 150 mm to 200 mm), the top plate is designed to be smaller than the depth length required until then. By designing in this way, it is possible to make the overall configuration of the electronic keyboard instrument compact when producing the electronic keyboard instrument.

  In the present invention, the musical score plate device may have a musical score plate and a pedestal separately, or may have the pedestal integrated. The “substantial effective length in the depth direction” of such a musical score plate device refers to a substantial length of the musical score plate device measured in the depth direction of the top plate when the musical score plate is folded down.

  Hereinafter, an electronic keyboard musical instrument provided with an interlocking structure with the musical score plate device will be described with reference to FIGS.

  In the illustrated electronic keyboard instrument 1 ″, the cover unit 320 covers the keyboard and the rear part thereof, and serves as a keyboard lid. The cover unit 320 includes a front cover (front cover) 321 and a rear cover (rear cover) 322 that are divided into front and rear parts and are foldably connected. The front cover 321 and the rear cover 322 are extended and the upper end of the mouth stick 6 is closed. From above to the front end of the top board 9 through the upper part of the keyboard, and open the upper part of the keyboard in a folded open state.

  The mounting structure of the cover unit 320 is as follows. The front cover 321 that forms a part of the cover unit 320 is supported by a pivot 315 fixed to the left and right side plates 8. The front cover 321 is opened and closed so as to rotate about a rotation fulcrum 315, and covers the white key 3 and the black key 4 when closed. The rear end of the front cover 321 and the front end of the rear cover 322 are rotatably connected by a hinge 323. The front cover 321 has a thickness for accommodating a functional member such as the speaker 324 inside.

  On the top surface of the top plate 9, a music score plate device 330 is slidably mounted in the front-back direction (the direction of arrow A in FIG. 7). The musical score plate device 330 includes a musical score plate 331 and a slide plate 332, and the musical score plate 331 is rotatably supported by the slide plate 332 by a rotation shaft 333 attached to a lower portion on the back surface. The back of the music score plate 331 is supported by a support tool 334, and the support tool 334 is locked at an appropriate position of the locking portion 335, thereby holding the music score plate 331 in a state of standing slightly obliquely rearward. can do. The slide plate 332 has a concave portion that is open on the upper surface, and a receiving base 336 is provided in the concave portion so as to extend continuously in a direction parallel to the rotation shaft 333. When the music score 338 is leaned up with the music score plate 331 standing up, the receiving portion 336 supports the lower end of the music score. The electronic keyboard instrument 1 ″ in FIG. 7 shows a state in which the cover unit 320 is opened and the music score plate 331 is raised.

  The music score plate device 330 slides on the top plate 9 in the front-rear direction in conjunction with the opening / closing operation of the cover unit 320. On the lower surface of the slide plate 332, a front tongue piece 341 and a rear tongue piece 342 extending substantially perpendicularly to the slide plate 332 are fixed back and forth with an interval therebetween. Through the opening 343. As the front tongue piece 341 and the rear tongue piece 342 move along the opening 343, the slide plate 332 slides on the top plate 9 in the front-rear direction.

  A guide groove 350 is provided in the side plate 8, and an engagement pin 322 b provided in a connection portion 322 a fixed to the rear end of the rear cover 322 slides along the guide groove 350, whereby a cover is formed. When the unit 320 is opened, the rear cover 322 can be slid backward. The side plate 8 is also provided with an introduction groove 351 for guiding the engaging pin 322b from the upper end of the side plate 8 to the guide groove 350.

  The engaging claw 322c provided on the connecting portion 322a engages with the front tongue piece 341 when the rear cover 322 slides forward, and pulls the rear tongue piece 342 when sliding backward. . With this structure, the music score plate device 330 can slide in the front-rear direction with respect to the top plate 9 in conjunction with the opening / closing operation of the cover unit 320.

  In this example, the above-described engaging claws 322c, front tongue piece 341 and rear tongue piece 342 function as connecting means for transmitting the movement of the cover unit 320 to the music score plate device 330. This configuration is an example, and it goes without saying that even if the configuration is different, it is included in the concept of the connecting means as long as the same operation is provided.

  Next, an operation for moving the music score plate device 330 back and forth in conjunction with the opening and closing movement of the cover unit 320 of the electronic keyboard instrument 1 '' will be described in detail with reference to FIGS. . In FIG. 8, some of the components that are not related to the movement of the cover unit 320 and the music score plate device 330 are not shown.

The electronic keyboard instrument 1 ″ shown in FIG. 7 shows a state in which the cover unit 320 is open. In this state, the rear end of the rear cover 322 contacts the rear tongue piece 342 fixed to the slide plate 332. ing. With the operation of closing the cover unit 320, the rear end of the rear cover 322 separates from the rear tongue piece 342, and the rear cover 322 moves forward along the guide groove 350. The rear end portion of the rear cover 322 contacts the front tongue piece 341 at a point where the rear end portion has advanced a predetermined distance (= L ₂ ) forward along the guide groove 350. Thereafter, when the cover unit 320 is further closed, the engaging claw 322c provided at the rear end portion moves the front tongue piece 341 by pulling it forward. Thereby, the musical score plate device 330 slides the upper surface of the top plate 9 forward (toward the front side). When the cover unit 320 is completely closed, the rear end of the rear cover 322 moves a predetermined distance, and the front tongue piece 341 reaches near the front end of the opening 343 and stops. In this state, the musical score plate device 330 is located at a position protruding slightly forward from the upper surface of the top plate 9. FIG. 8 is a vertical cross-sectional view showing the electronic keyboard instrument 1 ″ in which the cover unit 320 is completely closed in this way, and FIG. 9 is an electronic keyboard instrument 1 in a state where the cover unit 320 is closed. '' Is a front view. As shown in FIG. 9, the front tongue piece 341 (and the rear tongue piece 342) is located near the center in the width direction of the electronic keyboard instrument 1 ''. The upper and side surfaces of the slide plate 332 are in contact with a guide member 337 extending in the depth direction, and slide along the guide member 337.

Next, an operation when the cover unit 320 of the electronic keyboard instrument 1 '' is opened from the closed state shown in FIG. 2 will be described. When the cover unit 320 is opened, the rear end of the rear cover 322 separates from the front tongue piece 341, moves along the guide groove 350, and the engaging claw 322c slides rearward. When the rear end of the rear cover 322 moves by a predetermined distance (= L ₂ ) along the guide groove 350, the rear end of the rear cover 322 contacts the rear tongue piece 342. Since the rear tongue piece 342 can move rearward along the opening 343, the rear tongue piece 342 is pushed to the rear end of the rear cover 322, so that the engagement pin 322 b reaches a rear end of the guide groove 350 by a predetermined distance ( = L ₁ ) Move. When the engagement pin 333c stops at the end of the guide groove 350, the rear tongue piece 342 reaches near the rear end of the opening 343.

As is clear from the above description, the opening / closing operation of the cover unit 320 causes the rear cover 322 to slide by a substantial length (L ₀ = L ₁ + L ₂ ) in the depth direction of the guide groove 350. In this case, music rack device 330 to slide in conjunction with the opening and closing operation of the cover unit 320 is slid only each distance L ₁ in the longitudinal direction. In other words, while the rear end of the rear cover 322 slides the gap (= L ₂ ) between the front tongue piece 341 and the rear tongue piece 342, it does not affect the movement of the music score plate device 330 in the front-rear direction. That is, the distance L ₂ between the front tongue piece 341 and the rear tongue piece 342 plays a role of absorbing a part of the distance that the rear cover 322 moves to open and close the cover unit 320.

The distance (L ₂ ) at which the music score plate device 330 is slid can be easily adjusted by changing the positions of the front tongue piece 341 and the back tongue piece 342 by changing the position of the slide plate 332. can do. The sliding distance (= L ₀ ) of the rear end portion 322 can also be set as appropriate by selecting the length of the guide groove 350 and the opening 343 as necessary. In this way, by transmitting a part of the moving distance of the cover unit 320 (that is, the sliding distance of the rear cover 322) to the sliding operation (distance) of the musical score plate device 330, the length of the musical score plate device in the depth direction is transmitted. The degree of freedom in designing the depth of the pod, the sliding structure of the cover unit 320, and the like can be provided.

Next, FIG. 10 shows a state in which the music score plate 331 is folded down with the cover unit 320 closed. The music score plate 331 is designed so as to fit without falling over the back end (point P) of the top plate 9 when it is tilted backward. It is preferable that the design such as the depth length of the top plate 9 and the length of the music score plate 331 be adjusted together with the distance between the front tongue piece 341 and the back tongue piece 342 in the front-rear direction (= L ₁ ). By making such adjustments, it is possible to secure the height of the musical score plate 331 at which the musical score can be stably supported, and to design the depth of the electronic keyboard instrument 1 ″ compact.

  Further, the music score plate device 330 is located at the front (front) of the top plate 9 with the cover unit 320 closed. Therefore, when writing on a musical score or the like, it is possible to obtain an advantage that the musical score plate 12 or the slide plate 332 of the musical score plate device 330 can be easily used as a writing table.

  Furthermore, it is preferable that the cover unit 320 is designed to have a certain gap between the front cover 321 and the slide plate 332 when the cover unit 320 is opened. By doing so, when the cover unit 320 is opened, it is possible to prevent the hand cover from being caught between the front cover 321 and the music score plate device 330.

  The structure shown in FIGS. 7 to 10 shows an example of the connecting means of the music score plate device 330 and the cover unit 320, but the connecting means is not limited to such a structure. For example, a part of the moving distance of the cover unit 320 may be transmitted to the sliding distance of the music plate device 330 by using a gear, a belt, or the like, or a combination thereof. Further, in this example, the front cover 321 of the cover unit 320 rotates about the hinge 323 and the rear cover 322 moves back and forth. However, the present invention is not limited to such a form. The structure may be such that another part of the cover unit 320 or the entire cover unit 320 moves back and forth.

(Other embodiments)
The present invention is not limited to the embodiments described above, and various modifications are possible. For example, as the shock absorbing mechanism, in addition to the configuration in which a tension force is applied by a tension coil spring as shown in the figure, a torsion spring is interposed between the shaft of the rotation fulcrum of the front cover and its supporting portion, and the rotational moment is reversed in the opening and closing operation. Various configurations can be adopted, such as acting.

  As the guide mechanism that enables the rear cover to move in the front-rear direction, the guide mechanism of the first embodiment or the third embodiment may be replaced with the guide mechanism of the second embodiment. It is also possible to employ various other forms of link mechanisms and mechanisms having guide grooves or guide rails.

  In each of the above embodiments, the cover unit that covers the keyboard has been described. However, the present invention can be applied to a unit having a cover unit that covers an operator for controlling musical sounds other than the keyboard.

FIG. 2 is a vertical sectional side view showing the electronic keyboard instrument according to the first embodiment of the present invention in a state where a cover unit is closed. FIG. 2 is a longitudinal sectional side view showing a state where a cover unit is opened in the electronic keyboard instrument of FIG. 1. FIG. 2 is a longitudinal sectional side view showing a state in which a cover unit is at an intermediate position between opening and closing with respect to the electronic keyboard instrument of FIG. FIG. 2 is a plan view showing a part of the electronic keyboard instrument of FIG. 1 with a cover unit opened. It is a longitudinal side view showing the electronic keyboard musical instrument concerning a 2nd embodiment of the present invention in the state where the cover unit was closed. FIG. 6 is a vertical sectional side view showing a state where a cover unit is opened in the electronic keyboard instrument of FIG. 5. It is a longitudinal side view which shows the state which opened the cover unit about the electronic keyboard musical instrument which concerns on 3rd Embodiment of this invention. FIG. 8 is a longitudinal sectional side view showing a state in which a cover unit is closed in the electronic keyboard instrument of FIG. 7. FIG. 8 is a front view showing the electronic keyboard instrument of FIG. 7 with a cover unit closed. FIG. 8 is a longitudinal sectional side view showing a state where the cover unit is closed and the music score plate is turned down with respect to the electronic keyboard instrument of FIG. 7. It is a longitudinal side view which shows the prior art and shows the state where (a) the cover was opened and (b) the cover was closed. It is a longitudinal section side view which shows the form which built the speaker in the front cover of the conventional type electronic keyboard musical instrument schematically, (a) shows the state which closed the keyboard lid, and (b) shows the state which opened the keyboard lid.

Explanation of reference numerals

1, 1 ', 1' ': electronic keyboard instrument, 8: side plate, 9: top plate, 11: rear cover, 12: front cover, 16: link member (guide mechanism), 18: hinge portion, 20, 30: Cover unit, 21: pivot, 22: elastic member, 31: front cover, 32: rear cover, 33: hinge, 14, 34: speaker, 40: rotating device, 41: rotating support, 50: Guide mechanism, 51: guide groove, 53: engagement pin, 70: cushioning mechanism, 72: elastic member, 315: rotation fulcrum, 320: cover unit, 321: front cover, 322: rear cover, 322b: engagement pin , 323: hinge part, 324: speaker, 350: guide groove

Claims (6)

A keyboard to be operated and
A cover unit that includes a front cover and a rear cover that are divided so as to be located side by side in a closed state, and that opens the upper part of the keyboard in an open state in which the front cover and the rear cover are folded;
An electronic keyboard musical instrument comprising the keyboard and a musical instrument main body containing the musical sound generating means,
The front cover and the rear cover are rotatably connected at their upper parts by hinge portions, and the rear end portion of the front cover is a portion below the hinge portions by a rotation support portion fixed in the instrument body. The rear cover is supported movably in the front-rear direction by a guide mechanism provided on the side plate,
An electronic keyboard musical instrument, wherein a top plate provided on the musical instrument main body is provided so as to be located below a front end of the front cover in an open state. A keyboard to be operated and
A cover unit that includes a front cover and a rear cover that are divided so as to be located side by side in a closed state, and that opens the upper part of the keyboard in an open state in which the front cover and the rear cover are folded;
An electronic keyboard musical instrument comprising the keyboard and a musical instrument main body containing the musical sound generating means,
The front cover and the rear cover are rotatably connected at their upper parts by hinge portions, and the rear end portion of the front cover is a portion below the hinge portions by a rotation support portion fixed in the instrument body. The rear cover is supported movably in the front-rear direction by a guide mechanism provided on the side plate,
An electronic keyboard musical instrument, wherein a functional member with electric wiring is mounted on the front cover such that the front of the cover unit faces the player when the cover unit is open.   The electronic keyboard instrument according to claim 2, wherein the functional member is a speaker, and is incorporated in the front cover.   The electronic keyboard instrument according to claim 2, wherein the functional member includes an electronic display unit. An electronic keyboard musical instrument comprising a plurality of operators in the instrument body, a cover unit covering the operators, and an upper surface of the instrument body including the cover unit and a top plate.
The cover unit includes a front cover and a rear cover that are divided so as to be located side by side in a closed state, and the front cover and the rear cover open above the operation element in a folded open state. Are rotatably connected to each other by a hinge portion,
The front cover is rotatable by a rotation support portion in the instrument main body at both outer ends of the plurality of operators, and the rotation support portion is located below the hinge portion,
The rear end of the rear cover is connected to one end of a link member that acts as a cushioning member that allows the rear cover to move when the cover unit is opened and closed around the hinge and the rotation support. An electronic keyboard instrument, wherein the other end of the link member is supported near the lower surface of the top plate in the instrument body. An electronic keyboard musical instrument comprising a plurality of operators in a musical instrument main body, a cover unit covering the operators, and a load reducing means for reducing a load due to a weight of the cover unit when the cover unit is opened and closed.
The cover unit includes a front cover and a rear cover that are divided so as to be located side by side in a closed state, and the front cover and the rear cover open above the operation element in a folded open state. Are rotatably connected to each other by a hinge portion,
The front cover is rotatably supported by a rotation support portion in the instrument main body at both outer ends of the plurality of operators, and the rotation support portion is located below the hinge portion,
The load reducing means has one end connected to the instrument body and the other end connected to the hinge unit so as to increase resistance to approaching the cover unit as the cover unit approaches the fully open or fully closed position. An electronic keyboard instrument comprising an elastic member coupled to the front cover at a position separated in a direction transverse to the longitudinal direction of the electronic keyboard instrument.

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