Speaker cover, electronic musical instrument, and manufacturing method of speaker cover

Abstract

To provide a speaker cover with good appearance, an electronic musical instrument including the same, and a manufacturing method for the speaker cover.SOLUTION: A speaker cover 100 includes: a speaker cover body 110 having a sound hole 116; an exterior member 130 covering at least one surface of the speaker cover body 110; an intermediate member 120 disposed between the speaker cover body 110 and the exterior member 130, the intermediate member 120 lower in elasticity than the exterior member 130; and a first adhesive layer 150 provided between the intermediate member 120 and the exterior member 130.SELECTED DRAWING: Figure 3

Description

[Technical field]

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

[0002] Conventionally, as shown in Patent Document 1, a speaker cover provided on a speaker is provided with an exterior member such as a saran net. By covering a speaker with a speaker cover having an exterior member, damage and dirt to the speaker are reduced. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-85658 A DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0004] The exterior member of the speaker cover is made of a highly elastic material such as saran net so that it can be attached to the speaker cover body under tension. This allows the exterior member to be attached to the speaker cover body without wrinkles. However, when attaching an exterior member on which pictures, letters, symbols, etc. are printed or attached to the speaker cover body, applying tension to the exterior member can distort the pictures, etc. on the exterior member, making the speaker cover look less attractive.

[0005] An object of the present invention is to provide a speaker cover that looks good, an electronic musical instrument that includes this speaker cover, and a method for manufacturing this speaker cover. [Means for solving the problem]

[0006] A speaker cover according to one embodiment of the present invention comprises a speaker cover main body having a sound hole, an exterior member covering at least one side of the speaker cover main body, an intermediate member disposed between the speaker cover main body and the exterior member, the intermediate member having lower elasticity than the exterior member, and a first adhesive layer provided between the intermediate member and the exterior member.

[0007] An electronic musical instrument according to one aspect of the present invention includes the above-mentioned speaker cover and a speaker.

[0008] A manufacturing method for a speaker cover according to one embodiment of the present invention includes a first adhesive application step of applying a first adhesive to an intermediate member, a first adhesion step of bonding the intermediate member to an exterior member that is more elastic than the intermediate member, a second adhesive application step of applying a second adhesive to an upper surface of a speaker cover main body having a plurality of sound holes, a second adhesion step of bonding the intermediate member that has been bonded to the exterior member in the first adhesion step to the speaker cover main body, and a joining step of applying tension to the exterior member to join it to the speaker cover main body. Effect of the Invention

[0009] According to the present invention, it is possible to provide a speaker cover that looks good, an electronic musical instrument that includes this speaker cover, and a method for manufacturing this speaker cover. [Brief description of the drawings]

[0010] [Figure 1] 1 is a top view of an electronic musical instrument (electronic keyboard instrument) equipped with a speaker cover according to an embodiment of the present invention. [Diagram 2] 1 is an exploded perspective view of an electronic musical instrument (electronic keyboard instrument) equipped with a speaker cover according to an embodiment of the present invention. [Diagram 3] 3 is a cross-sectional view of the speaker cover according to the embodiment of the present invention taken along line III-III of FIG. [Figure 4] 1 is a perspective view of a speaker cover body of a speaker cover according to an embodiment of the present invention, viewed from above; [Diagram 5]2 is a perspective view of a speaker cover main body of the speaker cover according to the embodiment of the present invention, viewed from the bottom side. FIG. [Figure 6] 5A to 5C are explanatory diagrams showing a manufacturing process of the speaker cover according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. An electronic keyboard instrument 10 as an electronic musical instrument shown in Fig. 1 has a 61-key keyboard 11. In the following description of the electronic keyboard instrument 10, the side of the keyboard 11 will be referred to as the front, the opposite side as the rear, the left side as seen from the player on the key side as the left, and the right side as the right. Also, the upper side where the keyboard 11 is provided in Fig. 1 will be referred to as the top, and the opposite side as the bottom.

[0012] The electronic keyboard instrument 10 is provided with a case 20 that is long in the left-right direction (the direction in which the keys are arranged). The keyboard 11 is provided on the front side of the case 20. As shown in Fig. 2, the case 20 includes an upper case 20a and a lower case 20b. The upper case 20a includes a left sleeve case 22L and a right sleeve case 22R, which will be described later, and a rear wall 23, and is combined and fixed to the lower case 20b, which is a substantially elongated rectangular plate, with screws or the like.

[0013] 1 and 2, the case 20 includes a panel 21 provided behind the keyboard 11. An operating device 30 including a rotary knob 31 and a plurality of buttons 32 such as a power button is provided on the top surface of the panel 21. The top surface of the panel 21 is inclined downward from the rear to the front.

[0014] Furthermore, the left sleeve case 22L and the right sleeve case 22R provided on the left and right sides of the case 20 are provided across the front and rear of the case 20. The top surfaces of the left sleeve case 22L and the right sleeve case 22R are provided at an incline so as to descend from the rear to the front, similar to the top surface of the panel 21.

[0015] The rear ends of the left sleeve case 22L and the right sleeve case 22R are connected by a thin rear wall 23. The rear surface of the rear wall 23 forms part of the back surface of the case 20.

[0016] As shown in the enlarged enclosed diagram of part B in Figure 1, the left end portion of panel 21, the left and right ends of panel 21 (the right end portion of panel 21 is the same as in the enlarged diagram of part B) are connected to the left sleeve case 22L and the right sleeve case 22R via a small gap S1.

[0017] A speaker cover 100 is provided on the upper surface of the case 20 behind the panel 21. The speaker cover 100 is provided in a recessed speaker arrangement area 25 provided on the rear upper surface of the case 20.

[0018] 2, the speaker arrangement area 25 is a rectangular recess that is long in the left-right direction and is defined by the panel 21, the left sleeve case 22L, the right sleeve case 22R, and the rear wall 23. In other words, the speaker arrangement area 25 is surrounded by each of the inner surfaces of the recessed speaker arrangement area 25, i.e., the wall surface 21a that hangs down from the rear edge of the panel 21, the right side surface 22La of the left sleeve case 22L, the wall surface 23a that is the front surface of the rear wall 23, and the left side surface 22Ra of the right sleeve case 22R.

[0019] The inner surfaces (wall surface 21a, right side surface 22La, wall surface 21a, left side surface 22Ra) of panel 21, left sleeve case 22L, right sleeve case 22R, and rear wall 23 are configured as opposing surfaces 25a (outer peripheral wall surfaces) that face side surface 101 of speaker cover 100. Opposing surface 25a is in the shape of a substantially rectangular frame that is long in the left-right direction. As shown in the enlarged enclosed views of parts A and B in FIG. 2, a gap S2 is provided between opposing surface 25a and side surface 101 of speaker cover 100.

[0020] A left speaker 15L and a right speaker 15R (speakers 15) are arranged on the left and right sides of the speaker arrangement area 25. Also, the speaker arrangement area 25 is provided with a plurality of screw holes 26 for fixing the speaker cover 100 with a plurality of screw members 6 inserted from inside the case 20.

[0021] As shown in Fig. 3, the speaker cover 100 includes a speaker cover main body 110, an intermediate member 120, and an exterior member 130. Although details will be described later, the exterior member 130 is made of cloth such as knitted fabric, includes a lattice pattern 131 (see Figs. 1 and 2), and is provided in a form that covers at least one surface of the speaker cover main body 110. The intermediate member 120 is disposed between the speaker cover main body 110 and the exterior member 130, and is a member made of a woven fabric that is less stretchable than the exterior member 130. For convenience, in this embodiment, the pattern displayed on the exterior member 130 is described as a lattice pattern 131, but is not limited to this and may be a picture, a photograph, a symbol such as a letter, or the like.

[0022] 4 and 5, the speaker cover main body 110 includes an upper plate 111 having an upper surface 111a (upper surface area) on which the intermediate member 120 is disposed, and edge walls 112 extending slightly downward from the rear and left and right edges of the upper plate 111. The edge wall 112 is provided with a step portion 112b, as shown in the enclosed view of an enlarged view of part D in FIG. 5 (see also FIG. 3).

[0023] The upper plate 111 of the speaker cover main body 110 is provided as a substantially flat surface in the shape of a substantially rectangular plate that is long in the left-right direction. The upper surface 111a is provided so as to be inclined downward from the rear to the front, similar to the upper surfaces of the left sleeve case 22L and the right sleeve case 22R and the upper surface of the panel 21.

[0024] A plurality of sound holes 116, which will be described later, are arranged on the upper surface 111a of the upper plate 111. Also, in order to avoid interference with the rotary knob 31, a semicircular notch 111e corresponding to the rotary knob 31 is provided on the front edge of the upper plate 111 of the speaker cover body 110.

[0025] As shown in Fig. 5 and an enclosed diagram enlarging part E in Fig. 5, a step 111c is provided near the front edge of the lower surface 111b of the upper plate 111 along the front edge of the lower surface 111b (see also Fig. 3). The step 111c is provided from near the left end to near the right end of the lower surface 111b of the upper plate 111. A recessed groove 111d is provided adjacent to and along the step 111c on the rear side of the step 111c (see also Fig. 3).

[0026] As shown in Fig. 3 and Figs. 4 and 5, the side surface 110a (side surface region) of the speaker cover main body 110 includes a side surface 112a of the edge wall 112 and a front surface 110b of the speaker cover main body 110, and corresponds to the side surface 101 of the speaker cover 100. The side surface 110a is adjacent to the top surface 111a. Specifically, the side surface 110a is provided approximately perpendicularly from the edge of the top surface 111a. Here, the front surface 110b of the speaker cover main body 110 includes the front surfaces of the top panel 111 and the edge wall 112, which are provided continuously, as shown in the enclosed view of an enlarged view of part F in Fig. 4.

[0027] As shown in Fig. 5, a plurality of bosses 113 are provided on the lower surface 111b of the upper plate 111. Each boss 113 is provided with an internal thread. As shown in Fig. 2, the speaker cover 100 is fixed to the case 20 by screwing each screw member 6, which is inserted from below into a plurality of screw holes 26 provided in the speaker arrangement area 25, into the internal threads of each boss 113.

[0028] As shown in FIG. 5, ribs 114 are provided in a lattice pattern on the lower surface 111b of the upper plate 111 so as to span between the bosses 113, thereby reinforcing the speaker cover main body 110 which is long in the left-right direction.

[0029] As shown in Fig. 3, a connection portion R1 between the upper surface 111a of the upper plate 111 and the side surface 112a of the edge wall 112 is chamfered to form a rounded corner. Note that Fig. 3 shows a cross section in the front-to-rear direction, but the connection portions between the upper surface 111a and the side surface 112a of the edge walls 112 provided on the left and right are also chamfered to form a rounded corner. In addition, a connection portion R2 between the upper surface 111a of the upper plate 111 and the front surface 110b is chamfered to form a rounded corner.

[0030] 4 and 5, sound hole areas 115L, 115R (sound hole areas 115) having a plurality of sound holes 116 are provided on the left and right sides of the speaker cover main body 110. In this embodiment, the sound hole 116 is substantially hexagonal in shape, and the plurality of sound holes 116 are provided in a honeycomb shape by a lattice-shaped sound hole frame 117.

[0031] The sound hole areas 115L, 115R are oval-shaped and elongated in the left-right direction. The sound hole areas 115L, 115R are disposed on the speaker cover body 110 so as to be positioned corresponding to the speakers 15 (left speaker 15L, right speaker 15R) when the speaker cover 100 is disposed in the speaker arrangement area 25.

[0032] In addition, in the sound hole areas 115L, 115R, a sound hole wall 118 having a generally elliptical shape that is long in the left-right direction is provided so as to stand from the lower surface 111b of the upper plate 111 so as to surround the multiple sound holes 116. The tip of the sound hole wall 118 is close to the speakers 15 (left speaker 15L, right speaker 15R) and guides the sound from the speakers 15 (left speaker 15L, right speaker 15R) to the multiple sound holes 116. As shown by the outline arrows in FIG. 3, the guided sound from the speakers 15 is emitted from each sound hole 116 via the intermediate member 120 and the exterior member 130.

[0033] As shown in FIG. 6(a), the intermediate member 120 is a substantially rectangular plate long in the left-right direction, and is made of a woven fabric made of a resin material such as polyester having a fine mesh. The mesh size of the intermediate member 120 is sufficiently smaller than the sound hole 116. The intermediate member 120 has a lower elasticity than the exterior member 130. The intermediate member 120 has a size substantially the same as or smaller than the size of the upper surface 111a of the upper plate 111 of the speaker cover main body 110, and in this embodiment, the intermediate member 120 is slightly smaller than the upper surface 111a. More specifically, referring to FIG. 3, the edge of the intermediate member 120 is disposed in front of the corner R (so-called R end) at the connection parts R1 and R2 of the outer periphery of the upper plate 111 (upper surface 111a). The intermediate member 120 is not provided on the side surface 110a.

[0034] The exterior member 130 is provided with a size sufficient to cover the upper surface 111a and the side surface 110a of the speaker cover main body 110. As described above, the exterior member 130 is a member made of saran net with the lattice pattern 131 printed on the surface that will become the front side. In this embodiment, the pattern 131 is printed on the exterior member 130 by sublimation printing. Note that the exterior member 130 may be made of a fabric other than the saran net (more specifically, a knitted fabric). In addition to the lattice pattern 131 (picture), the pattern 131 can be provided on the exterior member 130 by printing, embroidery, pasting, or the like.

[0035] 3, a first adhesive layer 150 is provided between the intermediate member 120 and the exterior member 130. In addition, a second adhesive layer 160 is provided between the intermediate member 120 and the speaker cover main body 110. The first adhesive layer 150 and the second adhesive layer 160 are each layers formed by hardening an adhesive applied in the manufacturing process of the speaker cover 100, the first adhesive layer 150 bonds and fixes the intermediate member 120 and the exterior member 130 to each other, and the second adhesive layer 160 bonds and fixes the intermediate member 120 and the speaker cover main body 110 to each other.

[0036] The manufacturing method of the speaker cover 100 includes the following steps. 6(a), a first adhesive is applied to the entire surface of one side of the intermediate member 120. The first adhesive applied here becomes a first adhesive layer 150 when the exterior member 130 and the intermediate member 120 are bonded together in the next step.

[0037] First adhesion step: As shown in FIG. 6(b), the intermediate member 120 is attached to the back surface (the surface on which the pattern 131 is not provided) of the exterior member 130, which has a higher elasticity than the intermediate member 120. The pattern 131 is provided in advance on the exterior member 130 by printing or the like. In the figure, the pattern 131 provided on the front side is indicated by a broken line. Specifically, the intermediate member 120 and the exterior member 130 are attached to each other by placing the intermediate member 120 on the exterior member 130, which has been cut out to a size sufficiently larger than the intermediate member 120, so that one side of the intermediate member 120 on which the first adhesive is applied in the first adhesive application step faces and contacts one side of the exterior member 130 (the surface on which the pattern 131 is not arranged, i.e., the back surface), and then bonding the intermediate member 120 to the exterior member 130 by applying a predetermined pressure, or the like.

[0038] Furthermore, the first bonding step may include a step of drying the adhesive at a predetermined temperature for a predetermined period of time (first adhesive drying step) depending on the type of adhesive.

[0039] Second adhesive application step: After bonding the exterior member 130 and the intermediate member 120 in the first bonding step, a second adhesive is applied to the entire upper surface 111a (see FIG. 4) of the speaker cover main body 110 having a plurality of sound holes 116. The second adhesive is applied to the entire upper surface 111a including the upper surface of the sound hole region 115 (i.e., the upper surface of the sound hole frame 117). Since the sound hole region 115 (the upper surface of the sound hole frame 117) has a plurality of sound holes 116 and is prone to a decrease in adhesive strength, it is preferable to apply the second adhesive more (multiple times) to the sound hole region 115 than to other locations (flat portions of the upper surface 111a). The second adhesive applied in the second adhesive application step becomes the second adhesive layer 160 by bonding the intermediate member 120 and the speaker cover main body 110 in the next second bonding step.

[0040] 6(c), the intermediate member 120 attached to the exterior member 130 in the first bonding step is attached to the upper surface 111a of the speaker cover main body 110 to which the second adhesive has been applied. In this bonding, the intermediate member 120 is bonded to a predetermined position on the upper plate 111, that is, to a position where the edge of the intermediate member 120 does not exceed the corner R of the edge of the upper plate 111. A jig can be used to bond the intermediate member 120 to the speaker cover main body 110 with high accuracy.

[0041] The second bonding step may also include a step of drying the adhesive at a predetermined temperature for a predetermined time (second adhesive drying step) depending on the type of adhesive.

[0042] Bonding process: The speaker cover main body 110 and the exterior member 130 are bonded together while applying tension to the exterior member 130, completing the speaker cover 100 as shown in FIG. 6(d). Applying tension to the exterior member 130 reduces the occurrence of wrinkles and the like in the exterior member 130. Specifically, the bonding of the exterior member 130 and the speaker cover main body 110 is performed by pulling the vicinity of the edge of the exterior member 130 and welding the vicinity of the edge of the exterior member 130 to the speaker cover main body 110 while applying tension to the exterior member 130. More specifically, with the exterior member 130 placed on the stepped portions 111c and 112b shown in FIG. 3, a welding device (for example, a vibrator in the case of ultrasonic welding, or a hot plate in the case of thermal welding) is pressed against the stepped portions 111c and 112b to bond the exterior member 130 to the stepped portions 111c and 112b. The excess end of the exterior member 130 can be cut off with a knife or the like by utilizing the recessed portion on the inside of the step portion 112b or the recessed groove 111d.

[0043] In the above manufacturing process, an exterior member 130 on which a pattern 131 has been formed in advance is used, but for example, a sublimation printing process as described below can be provided between the first bonding process and the second adhesive application process. Sublimation printing process: Sublimation printing is performed on the printing surface (front surface, surface on which intermediate member 120 is not provided) of exterior member 130 that has been bonded to intermediate member 120 in the first adhesion process. Sublimation printing is performed by placing a transfer sheet on the printing surface and applying pressure and heat. Therefore, by performing sublimation printing on exterior member 130 that has been bonded to intermediate member 120 in the first adhesion process, exterior member 130 is less likely to shift when pressure and heat are applied, and therefore printing on exterior member 130 can be performed favorably.

[0044] The adhesive applied in the first adhesive application process and the adhesive applied in the second adhesive application process can be the same adhesive. For example, a water-soluble adhesive, LIGNO PG 6802 B-2 EVA Base, manufactured by LIGNO Indonesia, can be used.

[0045] Speaker cover 100 manufactured in this manner is formed by attaching exterior member 130 and intermediate member 120 bonded together in a first bonding step to speaker cover body 110. Therefore, even if tension is applied to exterior member 130 in the joining step, exterior member 130 bonded to intermediate member 120, which has low elasticity, is less likely to stretch, and therefore distortion of pattern 131 printed on exterior member 130 is reduced.

[0046] In other words, if the first adhesive layer 150 is provided at least between the exterior member 130 and the intermediate member 120, it is possible to reduce distortion of the pattern 131 when tension is applied to the exterior member 130. In addition, if the pictures, letters, symbols, etc. provided on the exterior member 130 are one-point, etc., the intermediate member 120 can reduce distortion of the pictures, etc. in the above-mentioned joining process as long as it is a size corresponding to at least the pictures, letters, symbols, etc. provided on the exterior member 130. However, in this case, since the intermediate member 120 causes a step on the surface of the exterior member 130, it is preferable that the intermediate member 120 has a size corresponding to the upper surface area, which is the upper surface 111a of the speaker cover main body 110, as in this embodiment.

[0047] Furthermore, although there is almost no tension applied to exterior member 130 corresponding to sound hole area 115, intermediate member 120 prevents exterior member 130 from dropping (depressing) into sound hole 116. That is, when there is no tension applied to exterior member 130, for example, without intermediate member 120, if a finger is pressed into sound hole 116, it will be depressed and will not return to its original state. However, in the speaker cover 100 of this embodiment, intermediate member 120, whose mesh is sufficiently smaller than sound hole 116, prevents exterior member 130 from being pressed into sound hole 116 by a finger or the like.

[0048] In the electronic keyboard instrument 10, the speaker arrangement area 25 in which the speaker cover 100 is arranged is substantially surrounded by an opposing surface 25a, and the opposing surface 25a faces the side surface 101 of the speaker cover 100 across a gap S2 (see the enlarged enclosed views of parts A and B in FIG. 1). Since the exterior member 130 has a pattern 131 provided over substantially the entire surface of one side, the side surface 101 of the speaker cover 100 is also provided with a pattern 131. Therefore, although the side surface 101 of the speaker cover 100 is only slightly visible through the gap S2, the lattice pattern can be seen even in this slightly visible portion, and therefore a good design can be presented without giving a sense of incongruity to the user.

[0049] As described above, according to the embodiment of the present invention, speaker cover 100 comprises speaker cover main body 110 having sound hole 116, exterior member 130 covering at least one side of speaker cover main body 110, intermediate member 120 arranged between speaker cover main body 110 and exterior member 130, intermediate member 120 having lower elasticity than exterior member 130, and first adhesive layer 150 provided between intermediate member 120 and exterior member 130.

[0050] This reduces distortion of pattern 131 even if tension is applied to exterior member 130 when fixing exterior member 130 to speaker cover body 110, making it possible to provide speaker cover 100 with a good appearance.

[0051] In addition, a second adhesive layer 160 is provided between intermediate member 120 and speaker cover body 110. This firmly fixes speaker cover body 110 and intermediate member 120, reducing misalignment between intermediate member 120 and speaker cover body 110 and enabling pattern 131 to be maintained in an appropriate state.

[0052] Moreover, the intermediate member 120 is disposed on the upper surface 111a of the speaker cover main body 110. This allows the intermediate member 120 and the upper surface 111a of the speaker cover main body 110 to be directly bonded to each other.

[0053] Furthermore, intermediate member 120 is provided with a size that covers at least a plurality of sound holes 116. This makes it possible to reduce the sagging of exterior member 130 into sound holes 116.

[0054] Furthermore, speaker cover body 110 includes top surface 111a which is a top surface region including sound hole 116, and side surface 110a which is a side surface region adjacent to top surface 111a which is the top surface region, intermediate member 120 is provided in the top surface region with a size equal to or smaller than the size of the top surface region and is not provided in the side surface region, and exterior member 130 is provided with a size that covers the top surface region and the side surface region. This allows pattern 131 to be appropriately positioned on the top surface of speaker cover 100 which is most visible to the user, and allows speaker cover 100 to be provided with pattern 131 so as not to give a sense of incongruity even if side surface 101 of speaker cover 100 is only slightly visible.

[0055] Moreover, the second adhesive layer 160 provided between the intermediate member 120 and the speaker cover main body 110 is provided over the entire upper surface 111a. This makes it possible to further securely fix the speaker cover main body 110 and the intermediate member 120 together.

[0056] Moreover, the intermediate member 120 is made of a woven fabric, and the exterior member 130 is made of a knitted fabric. This makes it possible to easily produce the intermediate member 120 and the exterior member 130.

[0057] Also, the size of the mesh of intermediate member 120 is smaller than the size of sound hole 116. This makes it possible to reduce the occurrence of depressions caused by exterior member 130 entering sound hole 116. Naturally, the sound generated by speaker 15 is efficiently emitted to the outside via intermediate member 120 and exterior member 130, as shown by the white arrow in FIG.

[0058] The speaker cover 100 is provided in a speaker arrangement area 25 of an electronic keyboard instrument 10 serving as an electronic musical instrument. A speaker 15 is provided in the speaker arrangement area 25. This makes it possible to provide an attractive electronic keyboard instrument 10 with a pattern 131 or the like appropriately provided on the speaker cover 100. Note that, although the electronic keyboard instrument 10 has been shown as an example in this embodiment, the speaker cover according to the present invention may also be used in other electronic musical instruments.

[0059] The manufacturing method of the speaker cover 100 includes a first adhesive application step of applying a first adhesive to the intermediate member 120, a first adhesion step of bonding the intermediate member 120 to the exterior member 130, a second adhesive application step of applying a second adhesive to the upper surface 111a of the speaker cover main body 110, a second adhesion step of bonding the intermediate member 120 attached to the exterior member 130 to the speaker cover main body 110, and a bonding step of bonding the speaker cover main body 110 and the exterior member 130 by applying tension to the exterior member 130. This makes it possible to provide a manufacturing method for a speaker cover 100 that looks good and reduces distortion of the pattern 131 even when tension is applied to the exterior member 130.

[0060] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0061] 6 Screw member 10 Electronic keyboard instrument 11 Keyboard 15 Speaker 15L Left speaker 15R Right speaker 20 Case 20a Upper Case 20b Lower case 21 Panel 21a Wall 22L Left Sleeve Case 22La right side 22R right sleeve case 22Ra Left side 23 Rear wall 23a Wall 25 Speaker placement area 25a Opposite surface 26 Screw hole 30 Operating device 31 Rotary knob 32 Button 100 Speaker Cover 101 Side 110 Speaker cover body 110a Side 110b Front 111 Top plate 111a Top surface 111b Bottom surface 111c Stepped section 111d Groove 111e Notch 112 Edge wall 112a Side 112b Step 113 Boss 114 Rib 115 Sound hole area 115L sound hole area 115R sound hole area 116 sound hole 117 sound hole frame 118 Sound hole wall 120 Intermediate member 130 Exterior parts 131 Pattern 150 1st adhesive layer 160 2nd adhesive layer R1, R2 connection part S1, S2 gap

Claims

1. A speaker cover body having a sound hole; an exterior member that covers at least one surface of the speaker cover body; an intermediate member disposed between the speaker cover body and the exterior member, the intermediate member having a lower elasticity than the exterior member; A first adhesive layer provided between the intermediate member and the exterior member; A speaker cover having

2. A second adhesive layer is provided between the intermediate member and the speaker cover body.

2. The speaker cover according to claim 1.

3. The intermediate member is disposed on an upper surface of the speaker cover body.

2. The speaker cover according to claim 1.

4. The speaker cover body includes a top surface region including the sound hole and a side surface region adjacent to the top surface region, the intermediate member is provided in the upper surface region and has a size substantially equal to or smaller than the size of the upper surface region, and is not provided in the side surface region; The exterior member is sized to cover the upper surface area and the side surface area.

2. The speaker cover according to claim 1.

5. The second adhesive layer provided between the intermediate member and the speaker cover body is provided over the entire upper surface area.

5. A speaker cover according to claim 4.

6. The intermediate member is made of a woven fabric, The exterior member is made of a knitted fabric.

2. The speaker cover according to claim 1.

7. The size of the mesh of the intermediate member is smaller than the size of the sound hole.

7. A speaker cover according to claim 6.

8. A speaker cover according to any one of claims 1 to 7; A speaker and An electronic musical instrument comprising:

9. a first adhesive applying step of applying a first adhesive to the intermediate member; a first bonding step of bonding the intermediate member to an exterior member having a higher elasticity than the intermediate member; a second adhesive application step of applying a second adhesive to an upper surface of the speaker cover body having a plurality of sound holes; a second bonding step of bonding the intermediate member bonded to the exterior member in the first bonding step to the speaker cover main body; a joining step of applying tension to the exterior member and joining it to the speaker cover main body; A manufacturing method of a speaker cover having the above structure.

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