Keyboard cover, keyboard cover storage method, and electronic musical instrument

Abstract

To be able to cover a keyboard when not in use of the keyboard, and be able to be stored and kept when the keyboard is in use.SOLUTION: An embodiment of the present invention comprises: a top covering portion 11 that covers the top surface of an instrument body 3 in a keyboard protection state; a front hanging portion 12 provided at the front end of the top covering portion 11 so that it is folded over the back surface of the top covering portion 11 in the normal state, and can be hung down to cover the front end surface of the keyboard 31; and a handle member 14, which can be bent and deformed, provided at the front hanging portion 12 so as to extend in the longitudinal direction of the instrument body. And the handle member 14 maintains an integrated state as a whole to be ready for storage.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a keyboard cover, a keyboard cover storage method, and an electronic musical instrument. [Background technology]

[0002] In musical instruments with keyboards (such as electronic keyboard instruments), the keyboard is provided on the top surface of the instrument body. When the keyboard is exposed and not covered, dust and other particles tend to accumulate on the keyboard, and if the accumulated dust and other particles find their way into the instrument body through gaps, it can cause malfunctions and other problems with the instrument. Therefore, in the past, there have been instruments in which a lid that covers the top surface of the instrument body is provided integrally with the instrument body. However, providing a lid integrally with the instrument body results in the instrument body becoming heavier and larger. In addition, there are also cases in which a lid is not provided from the viewpoint of design, etc. When an instrument does not have a lid, a cover (keyboard cover) made of fabric or the like that covers the top surface of the instrument body when not being played is sometimes provided detachably on the instrument body (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 1-125498 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with a detachable cover, it can be difficult to know where to put the keyboard cover once it has been removed from the instrument body, making it difficult to start playing easily and quickly when you want to. Also, if the keyboard cover is placed on the floor, the cover itself can get dirty, and when the cover is placed on the instrument body, the instrument body can end up getting dirty instead. In this regard, Patent Document 1 does not state anything about how to store the keyboard cover after it has been removed from the instrument body, and it is thought that there may be a situation where it is difficult to find a place to store the keyboard cover when the keyboard is in use.

[0005] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a keyboard cover that can cover the keyboard when not in use and can be stored and kept when in use, a keyboard cover storage method, and an electronic musical instrument. [Means for solving the problem]

[0006] In order to solve the above problems, the keyboard cover according to the present invention comprises a main body and Both ends The body Rotatably mounted and a handle member that can be folded and deformed, and the main body is folded to form a single unit. rotated The handle member The folded state of the main body is It is characterized in that it can be maintained.

[0007] The keyboard cover storage method according to the present invention includes: a main body that covers the top surface of the instrument body; Both ends The body Rotatably mounted and a handle member that is bendable and deformable and extends in the longitudinal direction of the instrument body, and the keyboard cover is folded into a folded state by folding the body in the longitudinal direction. Rotated by The handle member The folded state of the main body It is characterized by maintaining

[0008] Furthermore, the electronic musical instrument according to the present invention comprises: The device comprises a main body and a handle member provided on the main body that can be bent and deformed, and when the main body is folded, the entire device can be maintained in a unified state by the handle member. The instrument comprises a keyboard cover and an instrument body having a hook portion for hanging the keyboard cover, the hook portion being adapted to hang the handle member of the keyboard cover. [Effects of the Invention]

[0009] According to the present invention, the keyboard can be covered when not in use, and can be stored and kept when in use. [Brief explanation of the drawings]

[0010] [Figure 1]FIG. 2 is a perspective view showing the main configuration of the keyboard cover in the present embodiment. [Figure 2] 2 is a perspective view of the keyboard instrument in a keyboard-protected state in which the top surface of the instrument is covered with the keyboard cover shown in FIG. 1. FIG. [Figure 3] 3 is a perspective view of the keyboard instrument shown in FIG. 2 in a state where the keyboard is in use, showing an example in which the keyboard cover has been removed and the keyboard is in a stored or preserved state. FIG. [Figure 4] 1 is a plan view showing an example of the configuration of the rear surface of a keyboard instrument in a state where the instrument body is covered with the keyboard cover of this embodiment. FIG. [Figure 5] FIG. 1 is an enlarged view of the left side of the instrument when viewed from the front with the top surface of the instrument body covered with the keyboard cover. [Figure 6] 6 is a side view of the instrument body as seen from the direction of the arrow VI in FIG. 5. [Figure 7] FIG. 2 is an enlarged view of the instrument body with the keyboard cover covering the top surface thereof, as viewed obliquely from behind. [Figure 8] 3 is a perspective view of the main part of the keyboard instrument with the keyboard cover folded in from the state shown in FIG. 2.

[0023] FIG. [Figure 9] 9 is a perspective view of the main part of the keyboard instrument with the right side of the keyboard cover folded toward the center from the state shown in FIG. 8. FIG. [Figure 10] 10 is a perspective view of the main part of the keyboard instrument when the left side of the keyboard cover is folded toward the center from the state shown in FIG. 9 to assume a first folded state. FIG. [Figure 11] 11 is a perspective view of the main part of the keyboard instrument when the left and right sides of the keyboard cover are further folded toward the center from the state shown in FIG. 10 to a second folded state. FIG. [Figure 12] 12 is a schematic diagram showing the folded state of the keyboard cover shown in FIG. 11. FIG. [Figure 13] 13 is a schematic diagram showing the keyboard cover in the state shown in FIG. 12 folded in half at the center position. FIG. [Figure 14] 14 is a top view of the main part of the keyboard instrument when the keyboard cover is folded from the state shown in FIG. 11 to the state shown in FIG. 13, resulting in a third folded state. [Figure 15]15 is an explanatory view showing a state in which the keyboard cover in the state shown in FIG. 14 is held by hand and the handle member is pulled up. FIG. [Figure 16] 16 is an explanatory diagram showing the state in which the keyboard cover shown in FIG. 15 is hung by hand using the handle member. FIG. [Figure 17] FIG. 4 is an enlarged perspective view of a main part of a portion XVII in FIG. 3. DETAILED DESCRIPTION OF THE INVENTION

[0011] 1 to 17, an embodiment of a keyboard cover, a keyboard cover storage method, and an electronic musical instrument according to the present invention will be described. It should be noted that the embodiments described below are subject to various limitations that are technically preferable for carrying out the present invention, but the scope of the present invention is not limited to the following embodiments and illustrated examples.

[0012] Fig. 1 is a perspective view of a keyboard cover in this embodiment. Fig. 2 is a perspective view of a keyboard instrument in a state where the keyboard is protected, with the upper surface of the instrument body covered by the keyboard cover shown in Fig. 1. Fig. 3 is a perspective view of the keyboard instrument in a state where the keyboard cover has been removed from the instrument body of the keyboard instrument shown in Fig. 2, where the keyboard is in a stored state and the keyboard is in a usable state. In the following embodiments, left and right and front and rear refer to the directions shown in Figures 1 and 2. Up and down refer to the directions shown in Figure 2. The keyboard cover 1 shown in Figure 1 etc. covers the top surface of the instrument body 3, including the keyboard 31 (see Figure 3 etc.) of a keyboard instrument (in this embodiment, the keyboard instrument 2 shown in Figure 2 etc., which is an electronic instrument), to protect the keyboard 31 etc. from dust, dirt, etc.

[0013] [Composition of keyboard instruments] The keyboard instrument 2 to which the keyboard cover 1 is applied comprises an instrument body 3 and legs 4 that support the instrument body 3, as shown in FIGS. The instrument body 3 has a keyboard 31 including a plurality of keys (white keys and black keys) 311, and a housing 32 that houses the keyboard 31, as shown in FIG.

[0014] The housing 32 has sleeves 321 on both sides in the longitudinal direction (left and right direction) of the keyboard 31. A part of the front side of the keyboard 31 is covered by a mouthpiece 322. At least one of the controls and the display unit that are not covered by the keyboard cover 1 in the keyboard protection state is disposed on at least one side of the instrument body 3. In this embodiment, various controls 324, a display unit 325, etc. are provided on the upper surface of the sleeve 321 on the left side of the keyboard 31. The operators 324 are used by the user to input various instructions, and are composed of, for example, a pitch bend wheel, modulation wheel, slider bar, joystick, switch button, etc. The display unit 325 includes various displays (indicators, lamps, liquid crystal panel, etc.) that show the status of the keyboard instrument 2. Note that the illustrated operators 324 and display unit 325 are merely examples, and their shapes, arrangements, etc. are not limited to those shown in the drawings.

[0015] Even when not being used as a "keyboard instrument," the keyboard instrument 2 of this embodiment is capable of acquiring audio data (music data) from various devices, including mobile terminals such as smartphones connected via various wireless communications such as Bluetooth (registered trademark) and Wi-Fi, and playing and emitting sound from the acquired data. During this audio playback operation, the operators 324 and the display unit (indicators, etc.) 325 accept various operation input instructions, display the playback status, etc. For example, during audio playback, the display unit 325 lights up in a predetermined color. The part that lights up is not limited to the display unit 325, and for example, the periphery of the operators 324, etc. may light up. The display unit 325 may also display various information, such as the title of the music being played. Note that data acquisition in the keyboard instrument 2 is not limited to wireless, and data may also be acquired via a wired connection.

[0016] FIG. 4 is a rear view of an example of the instrument body as seen from behind the keyboard instrument. As shown in FIG. 4, the rear surface of the musical instrument body 3 is provided with an audio output section (sound emitting section 326 such as a speaker) that outputs (emits) sound, and a connection section 327 to which various terminals can be connected. The sound emitting unit 326 outputs sounds based on key operations by the user when playing the keyboard instrument 2. In this embodiment, even when the keyboard instrument 2 is not used as a "keyboard instrument" as described above, it can function as a "speaker" that outputs sounds based on audio data (music data) acquired from various external devices, and in this case too, sounds are output from the sound emitting unit 326. The layout of the rear surface of the instrument body 3 is not limited to the illustrated example. For example, although not shown, the rear surface of the instrument body 3 is provided with mounting parts for fixing the legs of a music stand, so that when playing the keyboard instrument 2, a music stand can be attached and used.

[0017] As will be described later, the legs 4 of the keyboard instrument 2 are provided with hook portions 41 (see FIG. 2, etc.) for hanging the keyboard cover 1 when it is folded and in a storable state. As will be described later, the hook portion 41 can be used to hook the keyboard cover 1 onto the keyboard cover 1 when the keyboard 31 is in a keyboard protecting state that protects the keyboard 31 when the keyboard 31 is not in use, and can be removed from the keyboard 31 to expose the keyboard 31 when the keyboard is in use, and can be folded up into a storable state when the keyboard is in use, to put the keyboard cover 1 into a storable / storage state. As will be described later, the keyboard cover 1 has a handle member 14 that can be folded to maintain the folded state (the "third folded state" described later) and store it in a storable state, and the hook portion 41 is designed to hook onto the handle member 14 of the keyboard cover 1 when it is in a storable state.

[0018] The position and shape of the hook are not particularly limited, but the keyboard cover 1 hooked onto the hook portion 41 is positioned so as not to get in the way of the user when playing using the keyboard 31. In this embodiment, reinforcing members 42 are attached to the left and right legs 4 to increase the strength of the legs 4, and the hook portion 41 is attached to these reinforcing members 42. The hook portion 41 may be attached by, for example, double-sided tape or screws, and the user may be able to adjust the attachment position according to their convenience.

[0019] Although detailed description will be omitted, the keyboard instrument 2 also includes a pedal unit and the above-mentioned detachable music stand (not shown). As described above, the keyboard instrument 2 of this embodiment is an electronic keyboard instrument, and includes a control unit (not shown) that controls the overall operation of each part of the keyboard instrument 2.

[0020] [Keyboard cover configuration] As shown in Figure 1, the keyboard cover 1 of this embodiment has an upper surface covering portion 11 that covers the upper surface of the instrument body 3 including the keyboard 31 of the keyboard instrument 2, and a front hanging portion 12 that is provided at the front end of the upper surface covering portion 11 and can hang down to cover the front end surface of the keyboard 31 when the keyboard is in the protected state. The top covering portion 11 and the front curtain portion 12 are both formed of a fabric with a certain degree of tension, such as thick felt, and are foldable at least in the longitudinal direction (the longitudinal direction of the instrument body 3 including the keyboard 31, and the left-right direction). The top covering portion 11 and the front curtain portion 12 may be formed of the same material or different materials. In this embodiment, the front curtain portion 12 is formed of a single piece of fabric together with the top covering portion 11, but the top covering portion 11 and the front curtain portion 12 may also be formed of separate pieces of fabric and joined together by sewing or the like. Furthermore, the rear end of the upper surface covering portion 11 is provided with a locking piece 17 that can hang down behind (towards the rear end of) the instrument body 3 when in the keyboard protection state.

[0021] The upper surface covering portion 11 extends in the longitudinal direction of the instrument body 3 (left and right direction in Figure 1), covers the entire keyboard 31, and also covers at least a portion of the sleeve portions 321 located on both the left and right sides of the keyboard 31. In this embodiment, as described above, various controls 324, a display unit 325, etc. are provided on the top surface of the sleeve 321 on the left side of the keyboard 31, and the top surface covering unit 11 is designed not to cover these (see FIGS. 2 and 3). The top surface covering unit 11 may be positioned by abutting against the controls 324, the display unit 325, etc. Note that the right side of the top surface covering unit 11 may be the same length as or slightly longer than the right end of the instrument body 3, but in the illustrated example, from the perspective of design and the like, the length is such that the left and right sleeves 321 are exposed to the same extent (see FIG. 2, etc.).

[0022] The length of the upper surface covering portion 11 in the short side direction (front-rear direction in FIG. 1) is approximately equal to the length of the musical instrument body 3 in the depth direction. Furthermore, a first indicator 15 indicating the center position in the longitudinal direction (left and right direction) of the top surface covering part 11 is provided at least in the center of the front end part of the top surface covering part 11. A pair of second indicators 16 serving as guides for the folding position are provided on both the left and right sides of this first indicator 15. The first index 15 and the second index 16 are formed by, for example, embroidery. The first index 15 and the second index 16 are preferably in different colors so that they can be easily distinguished. The first index 15 and the second index 16 may also have a decorative function, and are preferably in a color that blends in with the overall color tone of the keyboard cover 1. The pair of second indexes 16 are arranged at positions spaced a "predetermined distance d" to the left and right of the first index 15. Details of the positional relationship between the first index 15 and the second index 16 will be described later.

[0023] The length of front hanging portion 12 in the longitudinal direction (left-right direction in FIG. 1) is approximately the same as the length of top surface covering portion 11 in the longitudinal direction (left-right direction). The length of front hanging portion 12 in the short side direction is set to a length that can cover at least the front end surface of keyboard 31 when keyboard cover 1 is in the keyboard protecting state and front hanging portion 12 hangs down in front of instrument body 3. In this embodiment, as shown in Figure 2 etc., the length of the front hanging portion 12 when hanging is equal to or slightly longer than the lower end of the mouth rod 322 of the instrument body 3. There are no particular limitations on the length of the front hanging portion 12 when hanging, and it may be longer than the example shown in the figure. However, an unnecessarily long length is not preferable because it increases the weight and makes the keyboard cover 1 difficult to handle. The front hanging portion 12 may also be shorter than the example shown in the figure. The front hanging portion 12 only needs to be long enough to cover at least the front side of the keyboard 31, and it is not essential that it completely covers the mouth rod 322.

[0024] As shown in FIGS. 1 and 2, a handle member 14 is provided on the surface of the front hanging portion 12 so as to extend in the longitudinal direction (left-right direction) of the instrument body 3. The handle member 14 maintains the folded state of the keyboard cover 1, which has been folded into a single unit, so that it can be stored. When the keyboard is in use, the keyboard cover 1 is folded into a storable state and is then hung on the hook portion 41 of the keyboard instrument 2 by the handle member 14 for storage. Therefore, the handle member 14 has at least enough strength to allow the entire keyboard cover 1 to be hung by the handle member 14 alone. The handle member 14 is also bendable and is made of, for example, leather or synthetic leather that has a certain degree of strength and flexibility.

[0025] The handle member 14 is positioned at approximately the center position in the vertical direction of the front hanging portion 12, and is positioned so that its longitudinal center approximately coincides with the longitudinal center (left-right direction) of the front hanging portion 12 (the same as the longitudinal center of the upper surface covering portion 11). It is preferable that the surface of the handle member 14 be decorated with a product logo or other decorations.

[0026] The method of attaching the handle member 14 is not particularly limited, but in this embodiment, both ends of the handle member 14 are attached to the front oblong portion 12 by a set screw 141 inserted through the front and back of the front oblong portion 12, and the handle member 14 can rotate around the screw center of the set screw 141. A covering cloth or the like (not shown) is provided on the back of the front curtain portion 12 at a position corresponding to the set screw 141 to prevent the set screw 141 from directly contacting the instrument body 3 and damaging its surface.

[0027] The handle member 14 is attached to the front panel 12 by set screws 141, and both ends of the handle member 14 are arranged on the front and back of the entire keyboard cover 1 when the keyboard cover 1 is folded as described below (see Figures 14 to 16).

[0028] In this embodiment, as shown in Figure 1, the locking pieces 17 are located at the rear end of the upper surface covering portion 11, at both ends of the upper surface covering portion 11 in the longitudinal direction (left and right direction, direction in which the keys 311 are arranged). The locking piece 17 has a certain degree of strength and is made of, for example, leather, synthetic leather, etc. However, the material of the locking piece 17 is not limited to these.

[0029] As will be described later, the keyboard cover 1 of this embodiment is folded lengthwise into a single unit. If the strong locking pieces 17 are bent together with the top surface covering portion 11 during folding, it will be difficult to smoothly fold the entire keyboard cover 1. For this reason, it is preferable that the locking pieces 17 are positioned and positioned so as not to overlap the parts that will be bent when folded (parts where fold lines are formed). Furthermore, the shape, size, etc. of the locking piece 17 are not limited to the illustrated example, but as mentioned above, the rear surface of the musical instrument body 3 is provided with an audio output unit (sound output unit 326 such as a speaker) that outputs (emits) sound, and a connection unit 327 to which various terminals can be connected (see FIG. 4). For this reason, it is preferable that the locking piece 17 has a shape and size that does not cover the sound output unit 326, etc., even when it is hung down from the rear surface of the musical instrument body 3 in the keyboard protection state.

[0030] The front flap 12 and the locking piece 17 are arranged so as to be folded over and overlap the back surface of the upper covering part 11 in a normal state. 5 is an enlarged view of the left side of the instrument body when viewed from the front with the top surface of the instrument body covered with a keyboard cover, and FIG. 6 is a side view of the keyboard instrument as viewed from the direction of arrow VI in FIG. As shown in Figures 5 and 6, for example, a stitched portion 13 is provided at the front end of the upper surface covering portion 11 on which the front hanging portion 12 is provided so as to pinch the end of the upper surface covering portion 11 along the longitudinal direction (left and right direction), and the front hanging portion 12 is connected to the upper surface covering portion 11 via the stitched portion 13. As a result, when the front hanging portion 12 is not in contact with the front end of the upper surface of the instrument body 3, it falls down so as to overlap the rear surface of the upper covering portion 11. Furthermore, as shown in Figure 6, when the front hanging portion 12 is abutted against the front end of the upper surface of the instrument body 3, it hangs down at a position approximately perpendicular to the upper surface covering portion 11, following the shape of the front end of the upper surface of the instrument body 3 (the front end of the upper surface of the sleeve portion 321).

[0031] FIG. 7 is an enlarged view of the instrument body with the keyboard cover covering the top surface thereof, as viewed obliquely from behind. As shown in Figures 1 and 7, a stitched portion 18 is provided along the longitudinal direction (left-right direction) at the rear end of the top surface covering portion 11, and at both ends of the rear end of the top surface covering portion 11 in the longitudinal direction (left-right direction), locking pieces 17 are arranged so as to overlap the back surface of the top surface covering portion 11 and are attached to the top surface covering portion 11 by sewing them to the stitched portion 18. As a result, when the locking piece 17 is not in contact with the rear end of the top surface of the musical instrument body 3, it falls down so as to overlap the back surface of the top surface covering part 11. Furthermore, as shown in Figure 7, when the locking piece 17 is abutted against the rear end of the upper surface of the instrument body 3, it hangs down at an almost right angle to the upper surface covering portion 11, following the shape of the rear end of the upper surface of the instrument body 3 (the rear end of the upper surface of the sleeve portion 321).

[0032] As mentioned above, the length of the short side (front-to-back direction) of the top surface covering part 11 is approximately equal to the length of the depth direction of the instrument body 3. Therefore, when the keyboard cover 1 is placed over the top surface of the instrument body 3 to protect the keyboard as shown in Fig. 2, the front hanging part 12 provided on the front end side of the top surface covering part 11 and the locking piece 17 provided on the rear end side thereof are hooked onto the front end side and rear end side of the instrument body 3, respectively, and hang down approximately at a right angle to the top surface covering part 11 (see Figs. 6 and 7). At this time, the front curtain portion 12 and the locking pieces 17 attempt to return to their original state overlapping the back surface of the top covering portion 11, thereby pinching and holding down the instrument body 3 from the front and back. Therefore, the keyboard cover 1 can be firmly fixed to the instrument body 3 without the need for fasteners such as hook-and-loop fasteners or buttons, or non-slip devices for fixing the keyboard cover 1 to the instrument body 3.

[0033] [How to store the keyboard cover] Next, a method for storing the keyboard cover 1 will be described with reference to FIGS. 8 to 17.

[0034] First, when the keyboard 31 of the keyboard instrument 2 is not in use (when the user is not playing using the keyboard instrument 2), the keyboard cover 1 covers the keyboard instrument 2, as shown in Figure 2, to set it into a keyboard protection state in which the keyboard 31 etc. are protected from dust and other particles. When the keyboard cover 1 is attached to the instrument body 3 of the keyboard instrument 2 to protect the keyboard, for example, the locking pieces 17 provided on the rear end of the instrument body 3 on the top surface covering portion 11 at both ends in the longitudinal direction (left and right direction) are hooked onto the corners on the rear end side of the instrument body 3, and the handle member 14 is held to pull the front hanging portion 12 toward the front of the instrument body 3.

[0035] As a result, the locking pieces 17 open at an angle of approximately 90 degrees relative to the top surface covering part 11 (see FIG. 7, etc.), and hang down along the corners on the rear end side of the instrument body 3. The top surface of the instrument body 3, including the keyboard 31, is covered by the top surface covering part 11 of the keyboard cover 1. Furthermore, when the front hanging portion 12 provided at the front end of the upper surface covering portion 11 is hooked onto the corner on the front end side of the instrument body 3, the front hanging portion 12 opens at an angle of approximately 90 degrees relative to the upper surface covering portion 11 (see Figure 6, etc.), hangs down along the corner on the front end side of the instrument body 3, and covers the front end surface of the keyboard 31, etc.

[0036] In this state, the handle member 14 attached to the front hanging portion 12 is disposed on the surface of the front hanging portion 12, on the front side of the keyboard instrument 2 (see FIG. 2). As described above, both the front curtain portion 12 and the locking pieces 17 tend to collapse toward the rear surface of the top covering portion 11. As a result, the front curtain portion 12 and the locking pieces 17 of the keyboard cover 1 sandwich the instrument body 3 from the front and rear, making it difficult for the keyboard cover 1 to slip or come off.

[0037] Even in the keyboard protection state in which the keyboard cover 1 covers the keyboard instrument 2, the sound emitting section 326 and various connecting sections 327 arranged on the rear surface of the instrument body 3 are not covered by the locking pieces 17 of the keyboard cover 1, as described above (see FIG. 4). The longitudinal (left-right) width of the top surface covering section 11 is sized so as not to cover the operators 324 and display section 325 provided on the top surface of the instrument body 3 (in this embodiment, the top surface of the left sleeve section 321; see FIGS. 2, 3, etc.). Therefore, even in the keyboard protection state, the operators 324 and display section 325 are exposed from the keyboard cover 1 (top surface covering section 11 of the keyboard cover 1) (see FIG. 2, etc.), allowing the display section 325 to be seen and the operators 324 to be operated, etc.

[0038] When the keyboard cover 1 is removed from the instrument body 3 of the keyboard instrument 2 from the keyboard protection state shown in Figure 2, the upper surface covering part 11 and the front hanging part 12 including the handle member 14 are folded in the longitudinal direction, and the folded state, which is a united whole, is maintained by the handle member 14 to be in a storable state.

[0039] Specifically, first, as shown in Fig. 8, the front curtain 12 including the handle member 14 and the locking piece 17 are folded over so that they overlap the back surface of the top covering 11 to form a folded-over state. In this embodiment, as described above, the front curtain 12 and the locking piece 17 tend to return to their original state of overlapping with the back surface of the top covering 11. Therefore, by releasing the front curtain 12 from being hooked onto the corner on the front end of the instrument body 3 and releasing the locking piece 17 from being hooked onto the corner on the rear end of the instrument body 3, the front curtain 12 and the locking piece 17 can be easily folded over. By folding in the front curtain portion 12 and the locking pieces 17, the keyboard cover 1 becomes a nearly flat plate-like shape that is equal in size to the top covering portion 11. In Figure 8 and other figures, the parts that are folded in on the back and cannot actually be seen are shown by dashed lines.

[0040] Next, from the state shown in Figure 8, both longitudinal ends of the upper surface covering portion 11 and the front hanging portion 12 (including the handle member 14) are folded toward the center in the longitudinal direction to put the keyboard cover 1 into the "first folded state." Figure 9 shows the keyboard cover in a state where the right side is folded, and Figure 10 shows the keyboard cover in a state where the left side is also folded from the state shown in Figure 9. In other words, Figure 10 shows the "first folded state" in which both ends of the keyboard cover 1 are folded once each.

[0041] When folding both longitudinal ends of the upper surface covering portion 11 and the front hanging portion 12 toward the center in the longitudinal direction, as shown in Figures 9 and 10, the longitudinal ends of the upper surface covering portion 11 and the front hanging portion 12 are aligned with the positions of the second indicators 16 provided on the upper surface covering portion 11. This allows the left and right longitudinal folding amounts of the upper surface covering portion 11 and the front hanging portion 12 to be approximately equal.

[0042] When the keyboard cover 1 is in the "first folded state" shown in Fig. 10, the portions that are both longitudinal ends of the upper surface covering portion 11 and the front hanging portion 12 in the "first folded state" shown in Fig. 10 are further folded toward the center in the longitudinal direction, thereby achieving the "second folded state" shown in Fig. 11. At this time, the longitudinal ends of the upper surface covering portion 11 and the front hanging portion 12 are also aligned with the positions of the second indicators 16 provided on the upper surface covering portion 11. This allows the left and right longitudinal folding amounts of the upper surface covering portion 11 and the front hanging portion 12 to be approximately equal.

[0043] When the keyboard cover 1 reaches the "second folded state" shown in Figure 11, the entire cover is further folded in half so that both longitudinal ends of the top covering portion 11 and the front hanging portion 12 in the "second folded state" overlap each other. This places the keyboard cover 1 in the "third folded state" (see Figure 14). In Figure 14 etc., the center in the longitudinal direction of the upper surface covering portion 11 and the front hanging portion 12 before they reach the "third folded state", which is the side that is folded in half to reach the "third folded state", is called the back side α, and the overlapping portion when changing from the "second folded state" to the "third folded state" is called the joining side β (see Figures 14 to 16).

[0044] FIG. 12 is an explanatory diagram showing a keyboard cover in the "second folded state," and FIG. 13 is an explanatory diagram showing a keyboard cover in the "third folded state." As shown in FIGS. 12 and 13, the pair of second indicators 16 are spaced a "predetermined distance d" on the left and right sides from the first indicator 15 indicating the center position of the upper surface covering portion 11 in the longitudinal direction. The extent of the "predetermined distance d" depends on the thickness of the material forming the keyboard cover 1. In other words, as shown in Fig. 12, the "predetermined distance d" is set to be equal to or greater than (T≦d) the thickness (thickness T in Figs. 12 and 13) of the layer that is folded over the bottom layer that serves as the base in the "second folded state" (see Figs. 11 and 12) of the folded keyboard cover 1.

[0045] 12 and 13, for the sake of convenience, only the overlapping portion of the top covering portion 11 of the keyboard cover 1 is shown, but in reality, the front end portion of the top covering portion 11 is overlapped by the front hanging portion 12 over the entire longitudinal direction (see FIG. 11). Therefore, in the overlapping portion of the front hanging portion 12, the thickness T also increases in accordance with the thickness of the material. Because the "predetermined distance d" is equal to or greater than the thickness T (T≦d), when the "third folding state" shown in Figures 13 and 14 is achieved, the entire keyboard cover 1 can be smoothly folded into one unit without the fabric being pulled too hard or becoming wrinkled.

[0046] As described above, the handle member 14 is disposed at a position where its center substantially coincides with the longitudinal center of the top surface covering part 11, and in a normal state is parallel to the longitudinal direction of the front hanging part 12. In addition, in the "second folded state" shown in Fig. 11, the handle member 14 is long enough to remain on the back side of the top surface covering part 11 (i.e., it does not wrap around to the surface that is the upper side in Fig. 11). When the keyboard cover 1 is in the "third folded state" as shown in Figure 14, the handle member 14 is also folded in two longitudinally, and both ends of the handle member 14 are positioned on the front and back of the entire keyboard cover 1 that has been folded (the "third folded state").

[0047] Once the entire keyboard cover 1 is assembled, the handle member 14 is rotated to raise it outward from its position parallel to the longitudinal direction of the front hanging portion 12 (see FIG. 15). That is, in this embodiment, the handle member 14 is rotated around the axis of the set screw 141 that secures the handle member 14. At this time, as shown by the arrow in FIG. 15, the handle member 14 is raised from the back side α toward the mating side β. The entire keyboard cover 1 is then suspended by the handle member 14 positioned outward, thereby maintaining the folded state (see FIG. 16).

[0048] That is, when the keyboard cover 1 is hung by holding the outwardly raised handle member 14 in one hand, the entire keyboard cover 1 is pulled by its own weight in the direction of gravity as shown by the white arrow in Fig. 16. Furthermore, in this embodiment, as shown in Fig. 16, the locking piece 17 is located below the handle member 14 substantially in the direction of gravity (the direction shown by the white arrow in Fig. 16). Therefore, the entire keyboard cover 1 is more reliably pulled down in the direction of gravity as shown by the white arrow. As a result, when changing from the "second folded state" to the "third folded state," the overlapping portion (mating side β) is pressed in a narrowing direction by the handle members 14 that are engaged with the front and back of the assembled keyboard cover 1, and the keyboard cover 1 enters a "storable state" in which the folded state ("third folded state") is maintained (see Figure 16).

[0049] In this embodiment, in the "storable state," the entire keyboard cover 1 is suspended by the handle member 14 (see FIG. 16), which prevents the mating side β from opening. For this reason, in the "third folded state," the positions of both ends of the handle member 14 located on the front and back surfaces of the keyboard cover 1 (i.e., the positions of the set screws 141 that fasten the handle member 14 to the front hanging portion 12) are closer to the mating side β (the left side in FIGS. 15 and 16) than the center in the left-right direction of the assembled keyboard cover 1 in FIGS. 14, 15, etc. The specific positions of both ends of the handle member 14 (the positions of the set screws 141) are set appropriately so that when the keyboard cover 1 is suspended by the handle member 14, it can be suspended in a balanced manner.

[0050] In this embodiment, as shown in Figure 3 etc., the keyboard cover 1, which is in a "storage state" (see Figure 16), is hooked onto the hook portion 41 of the keyboard instrument 2 using the handle member 14, thereby putting the keyboard cover 1 into a "storage / storage state." FIG. 17 is an enlarged perspective view of a portion XVII enclosed by a dashed line in FIG. In the example shown in FIG. 17, when the handle member 14 is hooked onto the hook portion 41, the keyboard cover 1 is hooked so that the mating side β is on the inside (the inside, rear side of the keyboard instrument 2). In this way, by folding the keyboard cover 1 and maintaining the folded state ("third folded state") and hooking the keyboard cover 1 onto the keyboard instrument 2, it is possible to immediately move on to playing or other keyboard use operations without having to secure a separate place to put the keyboard cover 1.

[0051] [effect] As described above, according to this embodiment, the keyboard cover 1 comprises the top covering portion 11 that covers the top surface of the instrument body 3 including the keyboard 31 in the keyboard protection state, the front hanging portion 12 that is provided at the front end of the top covering portion 11 so as to be folded over and overlap the back surface of the top covering portion 11 in the normal state and that can hang down to cover the front end surface of the keyboard 31 in the keyboard protection state, and a foldable handle portion that is provided on the surface of the front hanging portion 12 so as to extend in the longitudinal direction (left-right direction) of the instrument body 3. and a locking piece 17 that is provided at the rear end of the top covering part 11 so as to be folded over and overlap the back surface of the top covering part 11 in the normal state, and that is capable of hanging down from the rear end of the instrument body 3 when the keyboard is protected.When the keyboard is in use, the front hanging part 12 including the top covering part 11 and the handle member 14 in the folded over state can be folded longitudinally, and the folded state that is formed as a single unit when folded is maintained by the handle member 14, making it possible to store it.

[0052] As a result, when in the keyboard protection state, the top covering portion 11 covers the top surface of the instrument body 3, and the front hanging portion 12 covers the front side of the keyboard, protecting the keyboard 31 and other components from dust and other particles. Particularly when the keyboard instrument 2 is an electronic instrument, as in this embodiment, if dust and other particles get inside the instrument body 3, this could cause problems such as electrical system failure. In this regard, the keyboard cover 1 of this embodiment can prevent dust and other particles from getting into the instrument body 3, thereby preventing such problems. In addition, the locking piece 17 and the front hanging part 12 are configured to hold down the instrument body 3 from the front and back, so the keyboard cover 1 can be prevented from coming off or slipping off from the instrument body 3 without being fixed with, for example, a hook-and-loop fastener or a button. Furthermore, the locking pieces 17 and the front hanging portion 12 are attached so that they are normally folded over and overlap the back surface of the top covering portion 11. Therefore, when removing the keyboard cover 1, simply by releasing the locking pieces 17 and the front hanging portion 12 from being caught on the corners of the instrument body 3, the locking pieces 17 and the front hanging portion 12 can be easily and quickly placed over the back surface of the top covering portion 11 and folded over easily.

[0053] In addition, in this embodiment, the handle member 14 is positioned so that its center approximately coincides with the longitudinal center of the upper surface covering portion 11, and both ends of the handle member 14 are positioned on the front and back of the entire cover (keyboard cover 1) when in a folded state (in this embodiment, the "third folded state" shown in Figure 14, etc.). As a result, when the handle member 14 is pulled outward (see Figures 15 and 16), the entire keyboard cover 1 can be sandwiched between the handle member 14 from the front and back. This prevents the folded state from collapsing and spreading out, and makes it possible to maintain the folded state (in this embodiment, the "third folded state" shown in Figure 14, etc.) without using a separate string or the like.

[0054] In this embodiment, the handle member 14 is attached to the front hanging portion 12 at both ends thereof by set screws 141 that are inserted through the front and back of the front hanging portion 12 so as to be rotatable about the center of the screws. This allows the handle member 14 to be easily pulled outward.

[0055] In this embodiment, the locking pieces 17 are arranged on both ends of the upper surface covering portion 11 in the longitudinal direction. This allows the keyboard cover 1 including the top surface covering portion 11 to be stably fastened to the instrument body 3 without any bias. Furthermore, by providing the locking pieces 17 only on both ends of the upper surface covering portion 11, the speaker's tone part 326, etc. are not covered, so when the keyboard instrument 2 is functioning as a "speaker," the keyboard cover 1 does not interfere with sound emission, etc.

[0056] In addition, in this embodiment, at least the front end of the upper surface covering portion 11 is provided with a first indicator 15 indicating the center position in the longitudinal direction (left-right direction) of the upper surface covering portion 11, and a pair of second indicators 16 arranged on both sides of this first indicator 15 and serving as a guide for the folding position. This allows the keyboard cover 1 to be folded in the longitudinal direction at an appropriate position simply by folding it along these indicators 15 and 16. Therefore, anyone can easily and quickly put the keyboard cover 1 into the retractable state.

[0057] In addition, in the storage method of the keyboard cover 1 in this embodiment, the keyboard cover 1, which covers and protects the top surface of the instrument body 3 including the keyboard 31 in the keyboard protection state, is folded into a folded state in which the entire body is one unit, and this folded state is maintained by the handle member 14 to form a ``storable state.'' This allows the keyboard cover 1 to be easily and quickly stored away when the keyboard instrument 2 is to be used for performance.

[0058] In addition, in this embodiment, when the keyboard cover 1 is in a folded state (the "third folded state"), the handle member 14 originally provided on the front hanging portion 12, etc. is rotated to stand outward, and the entire keyboard cover is suspended by the handle member 14 positioned outward, thereby maintaining the folded state of the keyboard cover 1. This allows the keyboard cover 1 to be easily put into a storable state without the need for a separate member such as a belt or fastener for bundling the keyboard cover 1.

[0059] Furthermore, the keyboard instrument 2, which is an electronic musical instrument in this embodiment, is provided with a hook portion 41 for hanging the keyboard cover 1 when the keyboard is in use. As a result, when the keyboard instrument 2 is used for performance, the keyboard cover 1 in the storable state can be easily put into the stowable state for storage, eliminating the need for a place to store the keyboard cover 1. Also, when the keyboard instrument 2 is moved, the keyboard cover 1 can be moved while being hung on the hook portion 41, so there is no need to worry about losing the keyboard cover 1.

[0060] The hook portion 41 of this embodiment is used to hook the handle member 14 of the keyboard cover 1 when it is in the storable state. Therefore, anyone can easily put the keyboard cover 1 into the stored state.

[0061] In this embodiment, the speaker's sound emitting section 326 is provided on the rear surface of the instrument body 3, in a position that is not covered by locking pieces or the like even when the instrument body 3 is covered with the keyboard cover 1 to protect the keyboard. This allows the keyboard instrument 2 to function as a "speaker" without impeding sound emission even when the keyboard is in the protected state.

[0062] In this embodiment, the operators 324 and the display unit 325 are disposed on the top surface of the instrument body 3 in positions that are not covered by the keyboard cover 1 in the keyboard protected state. As a result, when the keyboard instrument 2 is made to function as a "speaker" in the keyboard protected state, the keyboard cover 1 does not obstruct operations by the operating elements 324 or displays by the display unit 325.

[0063] [Variations] Although the embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to such an embodiment and that various modifications are possible without departing from the spirit of the present invention.

[0064] For example, in this embodiment, stitching portions 13, 18 are provided so that the front hanging portion 12 and the engaging piece 17 are folded over and overlap the back surface of the upper covering portion 11 in the normal state, but the method for folding over the front hanging portion 12 and the engaging piece 17 so that they overlap the back surface of the upper covering portion 11 in the normal state is not limited to the method shown here.

[0065] 17 shows a case in which the keyboard cover 1 is hooked so that the mating side β faces inward (facing the inside, rear side of the keyboard instrument 2) when the handle member 14 is hooked onto the hook portion 41, but the orientation of the keyboard cover 1 when hooked onto the hook portion 41 is not limited to this. The keyboard cover 1 may also be hooked so that the back side α of the keyboard cover 1 faces inward (facing the inside, rear side of the keyboard instrument 2). The hook portion 41 may be provided on both the left and right sides of the keyboard instrument 2, in which case the keyboard cover 1 is hung (hooked) on the hook portion 41 on the side that is easier for the user to use. The hook portion 41 may also be detachable, in which case the hook portion 41 may be attached to either the left or right reinforcing member 42, and the user can use it by switching the hook portion 41 to the side that is easier for them to use according to their own habits, etc.

[0066] In addition, although the present embodiment illustrates the case where the hook portion 41 is attached to the leg 4 of the keyboard instrument 2, the position of the hook portion 41 is not particularly limited. It is sufficient that the hook portion 41 does not interfere with playing the instrument when the keyboard cover 1 is hung up and stored, and the hook portion 41 may be provided on the back of the instrument body 3, for example.

[0067] Furthermore, in this embodiment, the first index 15 and the second index 16 are provided at the front end of the top surface covering portion 11, but the first index 15 and the second index 16 are not limited to the illustrated example, etc. For example, the first index 15 and the second index 16 may be marks on a line provided from the front end to the rear end of the top surface covering portion 11. Alternatively, only one of the first indicator 15 and the second indicator 16 may be provided. Furthermore, if the center position in the longitudinal direction can be identified without a mark, for example, if the left and right sides of the upper surface covering portion 11 are different colors, the first indicator 15 and the second indicator 16 may be omitted.

[0068] In addition, in this embodiment, the handle member 14 is attached to the front curtain portion 12 by a set screw, but the configuration for attaching the handle member 14 is not limited to this. The handle member 14 may be sewn to the front curtain portion 12 as long as it can be changed from a state parallel to the front curtain portion 12 to a state pulled outward.

[0069] Furthermore, in this embodiment, a pair of locking pieces 17 are provided on both ends of the top surface covering portion 11 in the longitudinal direction (i.e., the left-right direction), but the locking pieces 17 are not limited to this. For example, locking pieces may be provided in the center in addition to both ends in the longitudinal direction of the top surface covering portion 11. Furthermore, depending on the position of the sound emitting portion 326, locking pieces may be provided along the entire rear end of the top surface covering portion 11 (along the entire longitudinal direction).

[0070] Furthermore, in this embodiment, the case where the operators 324 and the display unit 325 are provided on the upper surface of the left sleeve 321 of the instrument body 3 has been exemplified, but the positions of the operators 324 and the display unit 325 are not limited to this. For example, if the operators 324 and the display unit 325 are arranged on the side of the instrument body 3, the length of the keyboard cover 1 in the longitudinal direction (left-right direction) may be long enough to cover the entire instrument body 3 including the left and right sleeves 321. Furthermore, it is not essential that both be exposed, as long as either the operators 324 or the display unit 325 are not covered by the keyboard cover 1. For example, if the display unit 325 has a touch panel or the like, it is sufficient that only the display unit 325 is exposed from the keyboard cover 1.

[0071] In addition, in this embodiment, an example is given in which the entire keyboard cover 1 is folded into a single unit in a storable state, and this folded state is maintained by the handle member 14, but it is not necessary to fold the keyboard cover 1 to make it storable. It is only necessary that the bundled state can be held by the handle member 14, and for example, the bundled state may be achieved by rolling the whole.

[0072] Furthermore, in this embodiment, the case where the locking piece 17 is provided at the rear end of the top covering portion and can hang down from the rear end of the instrument body when the keyboard is protected is illustrated, but it is not essential to provide the locking piece 17. If the locking piece 17 is not provided, a non-slip surface or the like may be provided on the back surface of the rear part of the top covering portion to prevent the keyboard cover 1 from slipping.

[0073] Furthermore, in this embodiment, the case where the handle member 14 is provided on the surface side of the front hanging portion has been exemplified, but the position where the handle member 14 is provided is not limited to this. For example, the handle member 14 may be provided on the back side of the front portion 12. In this case, when folding the keyboard cover 1, the front curtain portion 12 is folded back onto the front side of the top covering portion 11 so that the handle member 14 appears on the front side, creating a folded state. Also, when folding the entire keyboard cover 1, the longitudinal ends of the top covering portion 11 and the front curtain portion 12 are folded onto the back side of the top covering portion 11 so that the folded portions do not cover the handle member 14. As a result, when the entire keyboard cover 1 is finally folded, the handle member 14 can hold the keyboard cover 1 in a unified state, as shown in Figures 15 and 16.

[0074] Although several embodiments of the present invention have been described above, the scope of the present invention is not limited to the above-described embodiments, but includes the scope of the invention described in the claims and its equivalents. The inventions described in the claims originally attached to this application are as follows. The claim numbers described in the appendix are the same as those of the claims originally attached to this application. [Note] <Claim 1> an upper surface covering portion that covers the upper surface of the instrument body including the keyboard in the keyboard protection state; a front hanging portion provided at a front end of the upper surface covering portion so as to be folded over and overlap the upper surface covering portion in a normal state, and capable of hanging down to cover a front end surface of the keyboard in the keyboard protection state; a handle member provided on the front hanging portion so as to extend in the longitudinal direction of the instrument body and capable of being bent; Equipped with The entire assembly is maintained by the handle member, and the assembly is ready for storage. A keyboard cover characterized by: <Claim 2> The folded state of the front portion including the upper surface covering portion and the folded handle member is maintained by the handle member by folding the front portion in the longitudinal direction, and the folded state becomes a storable state. 2. The keyboard cover according to claim 1. <Claim 3> a locking piece provided at the rear end of the top covering part so as to be folded over and overlap the rear surface of the top covering part in a normal state, and capable of hanging down from the rear end of the instrument body in the keyboard protecting state; 3. The keyboard cover according to claim 1 or 2. <Claim 4> the front hanging portion is provided at the front end of the upper surface covering portion so as to be folded over and overlap the back surface of the upper surface covering portion in a normal state; The handle member is provided on the surface of the front portion. 3. The keyboard cover according to claim 1 or 2. <Claim 5> the handle member is disposed at a position where its center coincides with the center of the upper surface covering portion in the longitudinal direction; The two end sides of the handle member are respectively arranged on both sides of the entire cover that is united in the folded state. 3. The keyboard cover according to claim 1 or 2. <Claim 6> The handle member is attached to the front oblong portion by a set screw inserted through the front and rear of the front oblong portion at both ends thereof so as to be rotatable about the center of the screw. 3. The keyboard cover according to claim 1 or 2. <Claim 7> The locking pieces are arranged on both longitudinal ends of the upper surface covering portion, 4. The keyboard cover according to claim 3. <Claim 8> At least a front end portion of the upper surface covering portion is provided with a first indicator indicating the center position in the longitudinal direction of the upper surface covering portion, and a pair of second indicators disposed on both sides of the first indicator and serving as guides for the folding position. 3. The keyboard cover according to claim 1 or 2. <Claim 9> a keyboard cover including an upper surface covering portion that covers the upper surface of the instrument body including the keyboard in a keyboard protecting state, a handle member that is bendable and deformable and extends in the longitudinal direction of the instrument body, a front hanging portion that is provided at the front end of the upper surface covering portion so as to be able to hang down so as to cover the front end surface of the keyboard, and a locking piece that is able to hang down at the rear end of the upper surface covering portion on the instrument body, by folding the upper surface covering portion and the front hanging portion including the handle member in the longitudinal direction, the folded state in which the folded state is maintained as a unit by the handle member, and the keyboard cover is put into a storable state; A keyboard cover storage method characterized by the above. <Claim 10> The front portion including the handle member on the surface and the locking piece are folded so as to overlap the back surface side of the upper surface covering portion to be in a folded state, a first folded state is established by folding both longitudinal end portions of the upper surface covering portion and the front hanging portion toward the center in the longitudinal direction; a second folded state is achieved by further folding the portions that become both longitudinal end portions of the top surface covering portion in the first folded state toward the center in the longitudinal direction; and folding the second folded state so that both ends overlap each other to form a third folded state. The handle member is rotated to rise outward from a state parallel to the longitudinal direction of the front hanging portion, The entire keyboard cover is suspended by the handle member positioned outward to maintain the folded state. 10. The keyboard cover storing method according to claim 9. <Claim 11> a keyboard cover configured to be in a keyboard protecting state for protecting the keyboard when the keyboard is not in use, and to be removed from the keyboard to expose the keyboard when the keyboard is in use, and to be in a folded, storable state; an instrument body having a hook portion for hanging the keyboard cover in the storable state when the keyboard is in use, The keyboard cover has a handle member that maintains the folded state in which the keyboard cover is folded and can be stored. The hook portion is for hooking the handle member of the keyboard cover in the retractable state. An electronic musical instrument characterized by: [Explanation of symbols]

[0075] 1 Keyboard cover 11 Upper surface covering part 12 Propendicular area 14 Handle member 17 Locking piece 2. Keyboard instruments (electronic instruments) 3. Instrument body 31 keys 4 legs 41 Hook part

Claims

1. The main body and a handle member whose both ends are rotatably attached to the main body and which is bendable; Equipped with When the main body is folded, the folded state of the main body can be maintained by the handle member that is rotated in a state where the entire main body is folded. A keyboard cover characterized by:

2. The body includes: a first part as a top surface covering part of the keyboard; a second part provided at one end of the first part so as to be folded over and overlap the first part, and capable of hanging down from the keyboard; Equipped with 2. The keyboard cover according to claim 1.

3. the second part is provided at a front end of the first part so as to be in a folded state overlapping the second surface of the first part, The handle member is provided on a first surface of the second portion.

3. The keyboard cover according to claim 2.

4. a locking piece provided at the rear end of the first part so as to be folded over and overlap the second surface of the first part, and capable of hanging down from the rear end of the first part; 3. The keyboard cover according to claim 2.

5. The handle member is disposed at a position where its center coincides with the center of the main body in the longitudinal direction, The two ends of the handle member are disposed on both sides of the entire cover.

2. The keyboard cover according to claim 1.

6. The handle member is attached to the second part by a set screw that passes through the front and rear of the second part at both ends thereof so as to be rotatable about the center of the screw when the entire cover is assembled.

3. The keyboard cover according to claim 2.

7. The locking pieces are arranged on both ends of the first portion in the longitudinal direction, 5. The keyboard cover according to claim 4.

8. At least a front end portion of the first portion is provided with a first indicator indicating a center position in the longitudinal direction of the first portion, and a pair of second indicators disposed on both sides of the first indicator and serving as guides for the folding position.

3. The keyboard cover according to claim 2.

9. The keyboard cover includes a main body that covers the top surface of the instrument main body, and a handle member that is rotatably attached to the main body at both ends and that extends in the longitudinal direction of the instrument main body, and the main body is folded in the folded state by folding the main body in the longitudinal direction, and the handle member is rotated to maintain the folded state of the main body. A keyboard cover storage method characterized by the above.

10. The main body has a first part as a top surface covering part of the keyboard, and a second part provided at one end of the first part so as to be folded over and overlap the first part, and capable of hanging down from the keyboard; the second part including the handle member on its surface and a locking piece provided at the other end of the first part so as to hang down are folded onto the back surface side of the first part of the main body to form a folded state; a first folded state by folding both longitudinal end portions of the main body toward the center in the longitudinal direction; a second folded state is achieved by further folding the portions that are both ends of the main body in the longitudinal direction in the first folded state toward the center in the longitudinal direction; a third folded state is achieved by folding the second folded state so that both ends overlap each other; The handle member is rotated to rise outward from a state parallel to the longitudinal direction of the second portion, The entire keyboard cover is suspended by the handle member positioned outward to maintain the folded state.

10. The keyboard cover storing method according to claim 9.

11. The keyboard cover according to any one of claims 1 to 8, an instrument body having a hook portion for hanging the keyboard cover, The hook portion is for hooking the handle member of the keyboard cover. An electronic musical instrument characterized by:

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