JP2005338284A - Keyboard cover of keyboard instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a keyboard cover of a keyboard instrument which is easy to open or close and can be stashed compactly while reducing the manufacturing costs. <P>SOLUTION: This is a keyboard cover unit 10 to cover the keyboard 8 of a piano 2. It has a sheet container 12 provided at the back or in front of the keyboard 8 of the piano 2, a take-up roller 14 formed inside the container 12, a holder 16 formed at the opposite side of the container 12, i.e. at the back or in front of the piano 2, a sheet 11 wound around the roller 14 and stored in the container 12 as it remains wound around the roller 14 when stashed or pulled out to cover the keyboard 8, and a hook 11a provided on the sheet 11 to catch the pulled out sheet 11 on the holder 16. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a keyboard lid device for a keyboard instrument for covering a keyboard.

  This type of keyboard lid device is generally provided in a keyboard musical instrument in order to prevent dust from adhering to the keyboard or the like, and is disclosed in, for example, Patent Document 1. This keyboard lid device is applied to an electronic organ, and has a control panel having various switches and a slide lid that covers the keyboard, and a pair of left and right guides for guiding the slide lid. The slide lid is formed in a comb shape by connecting a plurality of plate members extending in the left-right direction in the front-rear direction. In addition, each guide is provided on the inner side surface from the brace to the side plate on the back side thereof. In the brace portion, it extends obliquely along the upper surface of the brace, and in the side plate portion, it curves downward. It extends in a shape. In this keyboard lid device, when the slide lid is pushed backward, the slide lid slides backward while being guided by the guide, and is supported at the rear end of the guide while being accommodated inside the control panel, and is opened. Become. In addition, when the slide lid is pulled forward from this state, the slide lid slides forward while being guided by the guide in an operation reverse to the above, and covers the keyboard and the like, and becomes a closed state.

  However, in this conventional keyboard lid device, the slide lid is composed of a plurality of plates, and it is necessary to form the slide lid by connecting the plurality of plates in an interdigital shape, which increases the manufacturing cost. In addition, the guide needs to be provided on the inner surfaces of the arms and the side plates, and the shape of the guide must be complicated as described above in order to guide the slide lid and accommodate it in a compact manner, and the manufacturing cost of the guide Also gets higher. As a result, the manufacturing cost of the keyboard lid device is increased.

  As another keyboard lid device, there is also known one that simply covers a keyboard or the like with a cloth dust cover. Such a dust cover is used for a relatively inexpensive keyboard instrument. However, this dust cover is relatively large in size so that it can completely cover the keyboard etc., such a large dust cover should be removed from the keyboard before using the keyboard instrument and covered again after use. It must be attached, and the attaching and removing operations are complicated. Moreover, there is also a problem that a place for the removed dust cover must be secured when using the keyboard instrument.

  The present invention has been made to solve the above-described problems, and can reduce the manufacturing cost, can easily open and close the keyboard, and can accommodate the keyboard lid in a compact manner. An object of the present invention is to provide a keyboard lid device.

Japanese Utility Model Publication No.59-119495

  In order to achieve the above object, the invention according to claim 1 is a keyboard lid device for a keyboard instrument for covering a keyboard provided on the instrument body, which is located on the rear and front sides behind the keyboard of the instrument body. In a state of being wound around the roller, wound around the roller, the holder provided in one of the front part, the roller provided in the container, the holder provided in the other of the rear part and the front part of the instrument body A sheet that is accommodated in the accommodating part and covers the keyboard in the state of being fed out in the front-rear direction, and a locking part that is provided on the sheet and locks the fed-out sheet through a holder. And

  According to this keyboard lid device, since a sheet is used as a keyboard lid for covering the keyboard, unlike a conventional keyboard lid device, a plurality of plate members are connected to form a slide lid, or left and right guides for this. It is not necessary to form a guide, and as a result, the manufacturing cost can be reduced and the degree of freedom can be increased, such as being able to easily cope with the size and layout of the keyboard as compared with the conventional keyboard lid device. When the keyboard is opened, the sheet can be compactly accommodated in the accommodating portion by winding the sheet around the roller in the accommodating portion. In addition, when the keyboard is closed, the keyboard can be easily covered with this sheet by feeding the sheet in the front-rear direction from the accommodating portion and locking it to the holder via the locking portion. Therefore, unlike a conventional keyboard lid device using a dust cover, it is not necessary to remove and attach the keyboard before and after using the keyboard instrument, and the keyboard can be opened and closed easily.

  According to a second aspect of the present invention, in the keyboard lid device for a keyboard musical instrument according to the first aspect, the accommodating portion is provided in the musical instrument main body.

  According to this configuration, since the seat wound in the housing portion is housed in the instrument body, the seat is hardly visible from the outside when the keyboard instrument is used, such as during a performance. Good appearance can be maintained.

  The invention according to claim 3 is the keyboard lid device of the keyboard instrument according to claim 1, wherein a music stand is provided behind the keyboard on the upper surface of the instrument body, and the accommodating portion is provided on the music stand. It is characterized by being.

  According to this configuration, since the storage portion for storing the seat is provided on the music stand on the musical instrument main body, a new storage portion is provided inside the musical instrument main body, or a significant design change accompanying this is performed. And a sheet as a keyboard cover can be easily installed.

  The invention according to claim 4 is the keyboard cover device of the keyboard instrument according to claim 1, wherein a music stand having an engagement protrusion formed on the rear side of the keyboard on the upper surface of the musical instrument body, and having an engagement protrusion, The engagement convex portion is detachably attached to the instrument main body in a state where the engagement convex portion is engaged with the engagement concave portion, and the housing portion has the engagement convex portion, and the engagement convex portion is engaged with the engagement concave portion. The instrument is detachably attached to the instrument body.

  According to this configuration, the music stand having the engaging convex portion is attached to the musical instrument main body by engaging the engaging convex portion with the engaging concave portion formed in advance on the musical instrument main body. After the keyboard instrument is used, the music stand is removed from the musical instrument main body, and the accommodating portion is attached to the musical instrument main body by engaging the engaging convex portion of the accommodating portion with the engaging concave portion of the musical instrument main body. In this way, the engagement recess on the instrument body can be shared for mounting the music stand and the storage section, so it is easy to install the music stand or storage section on the instrument body as needed, such as when using a keyboard instrument and after use. Can be attached to. In addition, the storage portion can be easily retrofitted to an existing instrument body having an engaging recess.

  According to a fifth aspect of the present invention, in the keyboard lid device of the keyboard musical instrument according to any one of the first to fourth aspects, further comprising a torque applying mechanism that applies a torque in a direction of winding the sheet to the roller. .

  According to this configuration, since the torque is applied to the roller in the direction of winding the sheet by the torque applying mechanism, the sheet can be automatically wound around the roller simply by releasing the locking of the sheet by the holder. Therefore, the keyboard can be opened easily.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an electronic piano to which a keyboard cover device according to a first embodiment of the present invention is applied. As shown in the figure, this electronic piano 1 (keyboard instrument) is composed of a piano body 2 (instrument body) and a stand 3 that supports the piano body 2 from below.

  The piano main body 2 covers the left and right arms 4, 4, a top plate 5 and a shelf (not shown) passed between the upper and lower ends of these arms 4, 4, and the front of the shelf. It has a case 7 made of a mouth stick 6 or the like. In the front half of the case 7, a keyboard 8 having a plurality of white keys 8a and black keys 8b is accommodated, and a control panel 9 having various switches 9a, a display 9b and the like is disposed above the rear part of the keyboard 8. Has been.

  Further, the piano body 2 is provided with a keyboard lid device 10 for covering the upper surface and the front surface of the piano body 2 including the keyboard 8. As shown in FIGS. 1 and 2, the keyboard lid device 10 includes a sheet 11 for covering the keyboard 8, and left and right arms 4, 4 at the upper corner of the rear side (right side in FIG. 2) in the case 7. A sheet storage unit 12 (storage unit) provided so as to extend over the entire space, and a sheet winder 13 that winds the sheet 11 so as to be stored in the sheet storage unit 12 are provided.

  The sheet 11 is made of a rectangular sheet made of cloth, plastic, or a composite material thereof, and has substantially the same lateral dimension as the distance between the left and right arms 4, 4 of the case 7. It has a vertical dimension capable of covering the upper surface and the front surface of the piano body 2. In addition, the rear edge of the sheet 11 is fixed to a winding roller 14 (to be described later) of the sheet winder 13, and the sheet 11 is continuous with the edge on the front end side of the back surface in the left-right direction and An elongated iron plate 11a (locking portion) having substantially the same length as the horizontal dimension is provided.

  The sheet winder 13 includes a winding roller 14 (roller) that extends in the left-right direction along the sheet storage portion 12 and is rotatably provided, and a direction in which the sheet 11 is wound around the winding roller 14. It is configured by a winding control mechanism 15 (torque applying mechanism) that controls the rotation of the winding roller 14 by applying torque in the clockwise direction in FIG. 2 or stopping the torque application. . That is, the keyboard lid device 10 including the sheet winder 13 and the sheet 11 is configured in the same manner as a so-called roll screen.

  In the keyboard lid device 10 configured as described above, when the sheet 11 is wound by the sheet winder 13, the sheet 11 is centered on the winding roller 14 as shown in FIG. The sheet is accommodated in a roll shape in the sheet accommodating portion 12. In addition, in this case, the leading end portion of the sheet 11 faces the outside through a sheet feeding port 5a that is continuous with the rear end portion of the top plate 5 in the left-right direction and opens upward. On the other hand, as shown in FIGS. 1 (b) and 2 (b), when the sheet 11 is extended so as to cover the upper surface and the front surface of the piano body 2, the lower surface of the mouth bar 6 or the lower surface front end of the shelf plate When the iron plate 11a at the tip of the sheet 11 is attracted to the magnet 16 (holder) attached to the section, the sheet 11 is locked.

  Next, the opening / closing operation of the keyboard 8 by the keyboard lid device 10 will be briefly described. First, when the sheet 11 is closed so as to cover the keyboard 8, the state shown in FIGS. 1A and 2A, that is, the sheet 11 is accommodated in the sheet accommodating portion 12 in a roll shape. From the state, the front end of the sheet 11 is grasped, and the sheet 11 is largely fed forward. Then, the iron plate 11 a at the tip of the sheet 11 is attracted to the magnet 16. Thereby, as shown in FIGS. 1B and 2B, the sheet 11 is locked in a state of covering the upper surface and the front surface of the piano body 2 including the keyboard 8. On the other hand, when releasing the keyboard 8 from this state, the iron plate 11a of the sheet 11 is removed from the magnet 16 and the sheet 11 is slightly fed out. If it does so, the sheet | seat 11 will be automatically wound up with the sheet | seat winder 13, and will be accommodated in the sheet | seat accommodating part 12 in roll shape.

  As described above in detail, according to the present embodiment, since the sheet 11 is used as a keyboard lid for covering the keyboard 8, the conventional keyboard lid device having a slide lid configured by connecting a plurality of plates is used. In comparison, the manufacturing cost can be reduced, and the degree of freedom can be increased, such as being able to easily cope with the size and layout of the keyboard 8. Further, when the keyboard 8 is opened, the sheet 11 can be compactly accommodated in the sheet accommodating portion 12. On the other hand, when the keyboard 8 is closed, the sheet 11 is fed out from the sheet accommodating portion 12 and the iron plate 11 a at the tip is attracted to the magnet 16. Thus, the keyboard 8 can be easily covered with the sheet 11. Therefore, unlike a conventional keyboard lid device using a dust cover, there is no need to remove and attach the keyboard 8 before and after the use of the electronic piano 1, and the keyboard 8 can be easily opened and closed by the seat 11. be able to.

  In addition, since the sheet 11 in the sheet storage unit 12 is stored in the piano body 2, the sheet 11 is hardly visible from the outside when the electronic piano 1 is used, such as during performance, and the appearance of the electronic piano 1 can be seen. It can be maintained well.

  In the present embodiment, the sheet storage portion 12 is provided in the upper corner on the rear side in the case 7, but the present invention is not limited to this, and the sheet 11 is fed out from the sheet storage portion 12. Sometimes, it is sufficient that the keyboard 8 and the control panel 9 can be covered. Therefore, the sheet storage portion 12 may be provided, for example, at a position near the front end of the top plate 5 in the case 7.

  Next, a keyboard lid device according to a second embodiment of the present invention will be described with reference to FIGS. In the following description, the same components as those in the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 3 and 4, the keyboard lid device 20 according to the present embodiment is of a type integrally formed with a music stand 21 mounted on the top plate 5 of the piano body 2. The music stand 21 is formed in a horizontally long rectangular front shape and has a shorter horizontal dimension than the top plate 5. A sheet storage box 22 (storage) is provided at the front lower end of the music stand 21. Part).

  The sheet storage box 22 is formed in a horizontally long box shape having substantially the same horizontal dimension as that of the top plate 5, and is formed at the lower end portion of the front wall 22a. Is provided. Further, in the sheet storage box 22, a sheet winding machine 13 including a winding roller 14 and a winding control mechanism 15 is provided as in the first embodiment. The sheet winder 13 accommodates the sheet 11 in the sheet storage box 22 in a roll shape.

  In the keyboard lid device 20 configured as described above, similarly to the first embodiment, the sheet 11 is fed forward through the sheet feeding port 22b of the sheet storage box 22, and the iron plate 11a at the leading end is magnetized to the magnet 16. As shown in FIGS. 3 (b) and 4 (b), the upper half of the upper surface and the front surface of the piano body 2 including the keyboard 8 are covered with the sheet 11. On the other hand, from this state, the iron plate 11a of the sheet 11 is removed from the magnet 16, and the sheet 11 is slightly unwound, whereby the sheet 11 is automatically wound by the sheet winder 13, and is rolled into the sheet storage box 22. Is housed in.

  As described above, according to the present embodiment, as in the first embodiment, the manufacturing cost can be reduced and the degree of freedom can be increased as compared with the conventional keyboard lid device having the slide lid. The opening / closing operation can be easily performed. Further, since the sheet storage box 22 of the keyboard lid device 20 is mounted on the top plate 5 of the piano main body 2, the piano main body different from the first embodiment, that is, the piano main body not having the sheet storage portion 12 therein. The seat 11 as a keyboard lid can be easily installed without newly providing a seat accommodating portion therein or making a significant design change associated therewith.

  In the present embodiment, the sheet storage box 22 is provided at the lower end of the music stand 21, but the present invention is not limited to this, and the sheet storage box 22 may be placed at other positions on the music stand 21, for example, a music score. You may make it provide in the upper end part of the stand 21. FIG. In this case, it is preferable to configure the music stand 21 so that the left and right dimensions of the music stand 21 are substantially the same as those of the sheet storage box 22, so that the keyboard cover device 20 and the music stand 21 can be separated. A sense of unity can be enhanced. Even when the sheet storage box 22 is provided at the lower end portion of the music stand 21, the left-right dimension of the music stand 21 may be substantially the same as the sheet storage box 22.

  In this embodiment, the keyboard cover device 20 is formed integrally with the music stand 21, but may be formed separately from the music stand 21. In this case, the sheet storage box 22 is placed on the top 5. Is placed in front of or behind the music stand 21.

  Next, a keyboard lid device according to a third embodiment of the present invention will be described with reference to FIGS. In the following description of the present embodiment, the same components as those in the first and second embodiments described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 5 and 6, the keyboard lid device 30 according to the present embodiment includes a music stand 21 in the existing electronic piano 1 including a music stand 21 that is detachably attached to the top 5 of the piano body 2. Instead of this, it is a type that can be mounted on the top plate 5. As shown in FIG. 5B, the top plate 5 of the electronic piano 1 has two mounting recesses 5b and 5b (engaging recesses) for mounting the music stand 21 with a space in the left-right direction. Is provided. On the other hand, on the bottom surface of the music stand 21, two mounting convex portions 21a, 21a (engaged) that can be fitted to the mounting concave portions 5b at predetermined positions corresponding to the two mounting concave portions 5b, 5b of the top plate 5. (Convex part) is projected. Therefore, when using the music stand 21 in the electronic piano 1, the two attachment convex portions 21a and 21a of the music stand 21 are respectively inserted into the attachment concave portions 5b and 5b of the top board 5 and are fitted together. The music stand 21 is mounted on the top board 5.

  As shown in FIG. 6, the keyboard cover device 30 that can be mounted on the top board 5 in place of the music stand 21 is almost the same as the music cover 21 omitted from the keyboard cover device 20 of the second embodiment. The sheet storage box 22 is configured in the same manner. The sheet storage box 22 is formed in a horizontally long box shape like that of the second embodiment, and a sheet feeding opening 22b is provided at the lower end of the front wall 22a. The sheet storage box 22 is provided with a sheet winder 13 including a winding roller 14 and a winding control mechanism 15. The sheet winder 13 stores the sheet 11 in a roll shape. Is done. Further, on the lower surface of the sheet storage box 22, two mounting convex portions 22 c and 22 c (engaging convex portions) configured in the same manner as the mounting convex portions 21 a and 21 a of the music stand 21 are projected.

  In the case of using the keyboard lid device 30 in the electronic piano 1, after the music stand 21 is removed from the top plate 5, the two mounting convex portions 22 c and 22 c of the sheet storage box 22 are respectively attached to the mounting concave portions of the top plate 5. The sheet storage box 22 is mounted on the top plate 5 by being inserted into and fitted into 5b and 5b. The subsequent closing operation of the keyboard 8 is the same as that of the second embodiment. As shown in FIGS. 6C and 7B, the upper half of the upper surface and the front surface of the piano body 2 including the keyboard 8 are And covered by the sheet 11. When using the music stand 21 from this state, the sheet storage box 22 is removed from the top plate 5 after the sheet 11 is stored in the sheet storage box 22 as in the second embodiment. The music stand 21 is attached on the top board 5.

  As described above, according to the present embodiment, it is possible to obtain the same effects as those of the second embodiment described above. In addition, since the mounting recesses 5b and 5b formed on the top plate 5 can be shared for mounting the music stand 21 and the sheet storage box 22, the piano body 2 can be used as needed, for example, when the electronic piano 1 is used or after use. The music stand 21 or the sheet storage box 22 can be easily attached. In addition, the sheet storage box 22 can be easily retrofitted to the existing piano body 2 having the mounting recesses 5b and 5b. That is, the keyboard lid device 30 can be easily attached to the existing piano body 2.

  In addition, this invention can be implemented in a various aspect, without being limited to the said 1st-3rd embodiment described. For example, in each of the embodiments described above, the sheet storage unit 12 and the sheet storage box 22 are both provided behind the keyboard 8, but the present invention is not limited to this, and the sheet storage unit 12 is connected to the mouth stick 6. Alternatively, the sheet storage box 22 may be provided on the lower surface of the mouth bar 6 or the lower surface front end of the shelf board. In these cases, the sheet 11 is fed out from the sheet storage unit 12 or the sheet storage box 22 to the rear of the keyboard 8, and the iron plate 11 a at the front end of the sheet 11 is attracted to the magnet provided on the top surface or the back surface of the top plate 5. By doing so, the keyboard 8 and the like are covered with the sheet 11.

  Further, the iron plate 11a at the front end portion of the sheet 11 may be directly attached to the back surface of the sheet 11, or the front end portion of the sheet 11 may be configured in a bag shape and housed therein. In this case, since the iron plate 11a can be always hidden from the outside, the appearance of the sheet 11 can be improved.

  Furthermore, in the embodiment, the iron plate 11a and the magnet 16 are used to lock the sheet 11 in a state of covering the keyboard 8, but the present invention is not limited to this, and the leading end portion of the sheet 11 is used. However, it only needs to be able to be locked to the lower surface of the mouth bar 6 or the lower surface front end of the shelf plate, and instead of the iron plate 11a and the magnet 16, various locking structures are adopted in which one is locked to the other. be able to. In addition, the detailed configuration of the keyboard lid device 10, 20, 30 shown in each embodiment is merely an example, and can be appropriately changed within the scope of the gist of the present invention.

It is a perspective view which shows the electronic piano to which the keyboard cover apparatus by 1st Embodiment of this invention is applied, (a) shows the state which opened the keyboard, (b) shows the state which covered the keyboard with the sheet | seat. (A) And (b) is a sectional side view of the piano main body corresponding to FIG. 1 (a) and (b), respectively, centering on a sheet | seat. It is a perspective view which shows the electronic piano to which the keyboard cover apparatus by 2nd Embodiment of this invention is applied, (a) shows the state which opened the keyboard, (b) shows the state which covered the keyboard with the sheet | seat. (A) And (b) is side sectional drawing of the piano main body corresponding to FIG. 3 (a) and (b), respectively, and centering on a sheet | seat. It is a perspective view which shows the existing electronic piano for demonstrating 3rd Embodiment of this invention, (a) is the state in which the music stand was attached to the piano main body, (b) is the music stand removed from the piano main body. Indicates the status. It is a perspective view which shows the piano main body by which the electronic piano of FIG. 5 replaced with a music stand and the sheet storage box was attached, (a) is a state before attaching a sheet storage box, (b) is a sheet storage box. The attached state, (c) shows a state in which the keyboard is covered with a sheet fed from the sheet storage box. (A) And (b) is side sectional drawing of the piano main body corresponding to FIG.6 (b) and (c), respectively, centering on a sheet | seat.

Explanation of symbols

1 Electronic piano (keyboard instrument)
2 Piano body (musical instrument body)
5 Top plate
5a Sheet feed opening
5b Mounting recess (engagement recess)
6 mouth stick
8 Keyboard 10, 20, 30 Keyboard lid device
11 sheets
11a Iron plate (locking part)
12 Sheet storage part (storage part)
13 Sheet winder
14 Winding roller (roller)
15 Winding control mechanism (torque application mechanism)
16 Magnet (holder)
21 music stand
21a Mounting projection (engagement projection)
22 Sheet storage box (storage section)
22c Mounting convex part (engaging convex part)

Claims (5)

A keyboard lid device for a keyboard instrument for covering a keyboard provided on the instrument body,
An accommodating portion provided on one of the rear part on the rear side and the front part on the front side of the keyboard of the instrument body;
A roller provided in the housing portion;
A holder provided on the other of the rear part and the front part of the instrument body;
A sheet that is wound around the roller, is accommodated in the accommodating portion in a state of being wound around the roller, and covers the keyboard in a state of being fed out in the front-rear direction,
A locking portion provided on the sheet, and locking the fed sheet through the holder;
A keyboard lid device for a keyboard instrument, comprising:   The keyboard cover device for a keyboard instrument according to claim 1, wherein the housing portion is provided in the instrument body. A music stand is provided behind the keyboard on the upper surface of the instrument body,
The keyboard cover device for a keyboard instrument according to claim 1, wherein the housing portion is provided on the music stand. An engagement recess is formed on the rear side of the keyboard on the upper surface of the instrument body,
A music stand having an engaging convex part is detachably attached to the instrument body in a state where the engaging convex part is engaged with the engaging concave part,
The said accommodating part has an engagement convex part, and this engagement convex part is detachably attached to the said instrument main body in the state engaged with the said engagement recessed part. Keyboard lid device for keyboard instruments.   The keyboard lid device for a keyboard instrument according to any one of claims 1 to 4, further comprising a torque applying mechanism that applies a torque in a direction in which the sheet is wound onto the roller.

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