JP2008181068A - Electronic keyboard musical instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an electronic keyboard musical instrument which is low in parts count and simple in structure and makes musical instrument body supported easily on a stand. <P>SOLUTION: A stand 2 is provided with left and right main plates 18, 20 which are erected opposite to left and right end rails 14, 16, and guide grooves 24, 26 are formed on the inner faces 18a, 20a of the left and the right main plates 18, 20, the inner faces facing each other, so that the left and right ends of the musical instrument body 1 are to be inserted in the guide grooves. The guide grooves 24, 26 are formed backward, from the front faces 18b, 20b of the left and the right main plates 18, 20, and protrusive parts 30, 32 to be inserted in the guide grooves 24, 26 are provided at the left and the right ends of the musical instrument body 1. The protrusive parts 30, 32 of the left and the right ends of the musical instrument body 1 are inserted in the guide grooves 24, 26 for mounting the musical instrument body 1 on the stand 2. Protrusions 36, which protrude in a direction parallel to the erecting direction of the main plates 18, 20, are provided at the left and the right protrusion parts 30, 32 and regulating grooves 38, to which the protrusions 36 can be fit, are provided in the main plates 18, 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electronic keyboard instrument in which a musical instrument body is attached to a stand such as an electronic piano.

  Conventionally, as disclosed in Patent Document 1, side plates are erected on the left and right tread bases, a pedal base is attached between the left and right tread bases, and a stand is formed. And a main plate attached with a hook-and-loop fastener over the side surfaces of the instrument body and the left and right side plates.

Further, as disclosed in Patent Document 2, mounting brackets are provided on the upper ends of the left and right side plates, and when the instrument body is mounted on the upper ends of the side plates, a hook for preventing the fall is provided on the lower surface of the instrument body. It is known that a musical instrument main body is prevented from falling during a period from when the hook is engaged with the nut and the musical instrument main body is fixed with a nut or the like.
JP 2000-148146 A JP 2002-62874 A (paragraph numbers 0004, 0005, FIG. 5)

  However, in the thing of such patent document 1, although a main plate can be easily attached using a hook-and-loop fastener, since it is a structure provided with a left and right side plate and a left and right parent plate, and attached by a hook-and-loop fastener, the number of parts is reduced. In many cases, the structure becomes complicated, and from the viewpoint of design, the parent plate has a substantially U-shaped cross-sectional structure that covers not only the side surface of the side plate but also the front and rear surfaces. There was a problem of becoming.

  Moreover, in the thing of patent document 2, since it has to provide the hook used only for fall prevention at the time of an assembly, it causes the increase in a number of parts, and since the hook protrudes from the lower surface of the musical instrument main body, Since packaging is troublesome and the hook is attached to the lower surface of the instrument main body, it is difficult to confirm that the hook has been hung on the mounting bracket, and there is a problem that the hook may be damaged.

  An object of the present invention is to provide an electronic keyboard instrument that has a small number of parts and can easily support a musical instrument body on a stand with a simple structure.

In order to achieve this problem, the present invention has taken the following measures in order to solve the problem. That is,
In an electronic keyboard instrument with the instrument body attached to the stand,
The stand includes left and right parent plates that are vertically opposed to each other, and guide grooves are formed on inner surfaces of the left and right parent plates that are opposed to each other so that both left and right ends of the instrument body can be inserted. An electronic keyboard instrument characterized in that guide grooves are formed from the front of the left and right parent plates toward the rear, the left and right ends of the instrument body are inserted into the guide grooves, and the instrument body is attached to the stand. That is it. At that time, it is preferable to form a chamfered portion on the front side of the main plate of the guide groove.

It is good also as a structure which provided the protrusion part inserted in the said guide groove in the both right and left ends of the said instrument main body. At that time, it is preferable to form a chamfered portion on the tip end side of the protrusion.
Further, a protrusion protruding in a direction parallel to the standing direction of the parent plate is provided on one of the left and right ends of the musical instrument body and the left and right parent plates, and a restriction groove into which the protrusion can be inserted is provided on the other. And the said protrusion and the said control groove | channel are good also as a structure inserted when inserting the both ends of the said instrument main body into the said guide groove. At that time, protrusions that can be inserted into the guide grooves are provided at the left and right ends of the instrument body, and the protrusions are provided at the protrusions on the left and right sides of the instrument body, respectively, and the guides of the left and right parent plates are provided. It is good also as a structure which provided the said control groove | channel opened in a groove | channel.

  Furthermore, you may insert the screw which fixes the member arrange | positioned in the said instrument main body into the said protrusion from the outer side of the said instrument main body.

  The electronic keyboard instrument of the present invention has an effect that the instrument body can be supported on the stand with a simple structure because the instrument body is inserted into and supported by the guide groove of the parent plate. At that time, if the chamfered portion is formed, the insertion becomes easier. Moreover, if a protrusion is provided in the instrument body and the protrusion is inserted into the guide groove, the instrument body can be easily assembled. Furthermore, by forming a protrusion on one of the instrument body and the parent plate and forming a restriction groove on the other, it is possible to prevent the space between the left and right parent plates from opening. If a screw for fixing a member arranged in the musical instrument main body is inserted into the protrusion from the outside of the musical instrument main body, the screw mounting operation becomes easy.

The best mode for carrying out the present invention will be described below in detail with reference to the drawings.
FIG. 1 is a perspective view of an electronic keyboard instrument as an embodiment of the present invention. As shown in FIG. 1, a musical instrument main body 1 and a stand 2 for supporting the instrument main body 1 are provided, and the stand 2 is constructed in an assembly type. The musical instrument main body 1 is provided with a keyboard unit 6 between arms 4 and 5 on both the left and right sides, and includes a keyboard lid 8 that opens and closes the keyboard unit 6 in a sliding manner, for example. In an electronic keyboard instrument such as an electronic piano, an operation panel 10 having various operation switches and the like is attached to the back of the keyboard unit 6. The musical instrument main body 1 is provided with a top plate 11 on the upper side, and a tiltable music stand 13 is provided on the top plate 11.

  In the stand 2, left and right wife bases 14 and 16 are arranged on both sides of the pedal base 12, and left and right parent plates 18 and 20 are erected on each of the wife bases 14 and 16, respectively. A back plate 22 is passed to the rear side of the left and right parent plates 18 and 20. The performer plays with facing the keyboard unit 6, and hereinafter, the left-right direction refers to the left-right direction from the performer, and the front-rear direction refers to the front-rear direction from the performer.

  FIG. 2 is an exploded perspective view of the electronic keyboard instrument of the present embodiment, which is disassembled into the instrument main body 1 and the stand 2 in a state where the keyboard unit 6 is covered with the keyboard lid 8 and seen obliquely from above. FIG. 3 is an exploded perspective view of the electronic keyboard instrument of the present embodiment, which is disassembled into the instrument body 1 and the stand 2 in a state where the keyboard unit 6 is covered with the keyboard lid 8 and viewed obliquely from above and obliquely downward.

  As shown in FIGS. 2 and 3, the left and right parent plates 18 and 20 are formed in a flat plate shape, and the left and right mother plates 18 and 20 are erected so as to face the left and right end bases 14 and 16, respectively. The respective parent plates 18 and 20 are arranged in parallel.

  Guide grooves 24 and 26 are respectively formed on the inner side surfaces 18a and 20a of the left and right parent plates 18 and 20 facing each other. The guide grooves 24, 26 are formed on the inner side surfaces 18 a, 20 a, open to the front surfaces 18 b, 20 b of the left and right parent plates 18, 20, and formed rearward from the front surfaces 18 b, 20 b.

  In the present embodiment, the guide grooves 24 and 26 are formed in a substantially rectangular shape that is long in the front-rear direction, and the bottom surfaces 14 a and 16 a of the left and right end foundations 14 and 16 are parallel to the lower side surfaces 24 a and 26 a of the guide grooves 24 and 26. It is formed to become.

  At both left and right ends of the musical instrument main body 1, rectangular protrusions 30 and 32 protruding in the left and right direction are provided. The protrusions 30 and 32 are formed to be insertable into the guide grooves 24 and 26 described above. In this embodiment, the rectangular protrusions 30 and 32 are formed by the arms 4 and 5 and the bottom plate 34 of the musical instrument main body 1 extending to the lower side of the arms 4 and 5. Is formed in the latter half of the arms 4 and 5. When the protrusions 30 and 32 are inserted into the guide grooves 24 and 26, the bottom plate 34 contacts the lower side surfaces 24a and 26a of the guide grooves 24 and 26.

  A gap is provided between the upper side of the protrusions 30 and 32 and the top plate 11, and the length in the left-right direction of the top plate 11 is formed to be approximately the same as the interval between the left and right parent plates 18 and 20. ing. The width of the top plate 11 in the front-rear direction is formed to be substantially the same as the width of the parent plates 18, 20 in the front-rear direction.

  Steps 4a and 5a are formed between the front half and the rear half of the arms 4 and 5, and the front half of the arms 4 and 5 is more than the protrusions 30 and 32 on the outer side and the upper side in the left-right direction. Stick out. It should be noted that the left and right arms 4, 5 are formed with a space between the left and right outer sides smaller than that between the left and right parent plates 18, 20. When inserted, the left and right parent plates 18 and 20 are formed so as to protrude outward in the left-right direction from the arms 4 and 5.

  As shown in FIG. 4, the right protrusion 32 is provided with a protrusion 36 that protrudes in the standing direction (vertical direction) of the right parent plate 20. In the present embodiment, the projection 36 has a head 36 a formed in a round bolt shape, and is fixed by being screwed to the projection 32. Further, the protrusion 36 is provided on the upper surface 32 a of the protrusion 32 and is provided in the vicinity of the step 5 a of the arm 5. Although illustration is omitted, the left protrusion 30 is also provided with a similar protrusion.

  As shown in FIGS. 3 and 4, chamfered portions 32 b and 32 c are formed at the upper and side corners of the protrusion 32 at the rear end of the protrusion 32. The bottom corner of the bottom plate 34 is not chamfered. The chamfered portions 32b and 32c may be formed in a size that facilitates insertion of the protrusion 32 into the guide groove 26. The other chamfer 30 is also chamfered in the same manner. Moreover, not only chamfering but fillet processing may be used.

  As shown in FIG. 5, a restriction groove 38 into which the protrusion 36 can be inserted is formed in the right master plate 20, and the restriction groove 38 is formed in the guide groove 26 by recessing the upper side surface 26 b of the guide groove 26. It is opened and formed from the front surface 20b of the right master plate 20 toward the rear. The length of the restriction groove 38 from the front surface 20b of the right master plate 20 to the rear may be formed slightly longer than the length from the step 5a of the arm 5 to the side edge of the protrusion 36.

  The protrusion 36 is not limited to the protrusion 32 and the restriction groove 38 is provided in the guide groove 26, but the protrusion 36 is provided to protrude downward from the top plate 11, and the restriction groove 38 is formed on the upper end surface of the right main plate 20. May be provided so that the protrusion 36 can be fitted into the restriction groove 38. Although not shown, a similar restriction groove is also formed in the left parent plate 18.

As shown in FIGS. 2 and 5, chamfered portions 26 c and 26 d are formed at the upper and side corners of the guide groove 26 opened in the front surface 20 b of the right master plate 20. The lower surface 26a of the guide groove 26 is not chamfered. The chamfered portions 26 c and 26 d are smaller in size than the step 5 a of the arm 5, and the chamfered portions 26 c and 26 d are covered by the step 5 a of the arm 5 when the protrusion 32 is inserted into the guide groove 26. Thus, the chamfered portions 26c and 26d are configured not to be visible from the outside. The other guide groove 24 is also chamfered in the same manner. Further, not only chamfering but also fillet processing may be used. FIG. 6 is an enlarged perspective view of a state in which the keyboard lid 8 and the top plate 11 are removed from the instrument body 1. As shown in FIG. 6, the above-described operation panel 10 is formed so that the width in the left-right direction is substantially the same as the inner space between the left and right arms 4, 5. 41 and 42 are formed.

  The operation panel 10 is inserted between the left and right arms 4 and 5, and both left and right end surfaces of the operation panel 10 are in contact with the left and right arms 4 and 5. Counterbores 44 and 45 (see FIGS. 6 and 7) corresponding to the screw holes 41 and 42 are formed in the protrusions 30 and 32 of the left and right arms 4 and 5, respectively. The counterbored holes 44 and 45 are formed so that screws 47 (only one is shown) are inserted from the left and right outer sides of the arms 4 and 5. The screws 47 are inserted into the counterbored holes 44 and 45, and the screws of the operation panel 10 are also inserted. The operation panel 10 is fixed to the left and right arms 4 and 5 by screwing into the holes 41 and 42. Since the screws 47 can be screwed in from the left and right outer sides of the arms 4 and 5, assembly work is facilitated. In other words, if screws are screwed in from the left and right arms 4 and 5, the driver must be operated between the left and right arms 4 and 5, and the assembly work is carried out in a narrow space. hard.

Next, a procedure for assembling the instrument main body 1 and the stand 2 according to the present embodiment will be described.
First, the pedal base 12 is attached to the left and right base plates 18 and 20 to which the left and right end bases 14 and 16 are attached via a metal fitting 40 (only one is shown), and the rear side of the left and right base plates 18 and 20 is attached. The back plate 22 is attached, and the stand 2 is formed.

  Then, the protrusions 30 and 32 at both left and right ends of the musical instrument main body 1 are inserted into the guide grooves 24 and 26 of the left and right parent plates 18 and 20. At this time, the protrusions 30 and 32 may be inserted into the guide grooves 24 and 26 while moving the musical instrument main body 1 in the front-rear direction (horizontal direction) with the stand 2 upright, or the stand 2 is tilted down. Then, the back plate 22 may be laid on the floor, and the protrusions 30 and 32 may be inserted into the guide grooves 24 and 26 by moving downward with the instrument body 1 rotated 90 degrees.

  When the protrusions 30 and 32 are inserted along the guide grooves 24 and 26, the protrusions 36 are also inserted into the restriction grooves 38. Then, the steps 4a and 5a of the arms 4 and 5 abut against the front surfaces 18b and 20b of the left and right parent plates 18 and 20 to restrict further insertion.

  After the insertion, the bottom plate 34 of the musical instrument main body 1 and the inner side surfaces 18a, 20a of the left and right parent plates 18, 20 are fixed by L-shaped metal fittings 42 (only part of which are shown) and screws 44. Thereafter, the power cord 46 and the pedal cord 48 are connected.

  The instrument body 1 can be supported by the stand 2 by inserting the protrusions 30 and 32 at the left and right ends of the instrument body 1 into the guide grooves 24 and 26 of the left and right parent plates 18 and 20, respectively. The left and right parent plates 18 and 20 are erected on the wife bases 14 and 16, and the number of parts can be reduced.

  Since the protrusions 30 and 32 at the left and right ends of the musical instrument main body 1 are inserted into the guide grooves 24 and 26 of the left and right master plates 18 and 20, the musical instrument body 1 can be used even before it is screwed and fixed through the L-shaped bracket 42. Since the main body 1 is supported by the stand 2 and does not fall, the assembly work can be performed safely. Since it is not necessary to provide a hook or the like on the lower surface or the like of the musical instrument main body 1, the shape of the packaging box of the musical instrument main body 1 may be simple, and the packaging work is facilitated. In addition, there is no risk of damaging the floor surface by hooks or the like.

  In addition, when the electronic keyboard instrument is viewed from the front side, the left and right parent plates 18 and 20 surround the arms 4 and 5 of the instrument body 1 in a U-shape, so that a high-class feeling can be obtained in terms of design. . Further, when the protrusions 30 and 32 are inserted into the guide grooves 24 and 26, even if the front surfaces 18b and 20b of the parent plates 18 and 20 around the guide grooves 24 and 26 are damaged, the steps of the arms 4 and 5 Since it is covered with 4a and 5a, the appearance is not impaired.

  Further, chamfered portions 32b and 32c (only one is shown) are formed at the tip angles of the protrusions 30 and 32, and chamfered portions 26c and 26d (only one is shown) are formed at the entrance angles of the guide grooves 24 and 26. Has been. Therefore, the left and right protrusions 30 and 32 can be easily inserted into the left and right guide grooves 24 and 26 by the double-sided chamfers 32b, 32c, 26c, and 26d.

  The lower surfaces 24a and 26a of the guide grooves 24 and 26 and the lower corners of the protrusions 30 and 32 are not chamfered. If the lower side is chamfered, when inserting along the chamfer, the instrument body 1 will be lifted up and inserted, making it difficult to insert and the chamfered part will be easily scratched. These are prevented. Even if the chamfered portions 26c and 26d are formed in the guide grooves 24 and 26, they are covered by the steps 4a and 5a of the arms 4 and 5, so that the appearance is not impaired.

  In addition, when the left and right protrusions 30 and 32 are inserted into the left and right guide grooves 24 and 26, the left and right protrusions 36 (only one is shown) are fitted into the left and right restricting grooves 38 (only one is shown). To do.

  Here, since the left and right protrusions 36 are fitted in the left and right restricting grooves 38, it is possible to restrict the left and right parent plates 18 and 20 from opening outward in the left and right direction. Therefore, when the heavy instrument body 1 is supported on the stand 2 or when the parent plates 18 and 20 absorb moisture, the deformation of the parent plates 18 and 20 is suppressed, and the left and right parent plates 18 and 20 are left and right. Can be prevented.

  Since the left and right protrusions 30 and 32 are inserted into the left and right guide grooves 24 and 26, the left and right protrusions 30 and 32 are covered with the left and right parent plates 18 and 20. Therefore, even if the heads of the screws 47 are exposed at the left and right protrusions 30 and 32, they are covered by the left and right parent plates 18 and 20 when assembled, and the appearance is not impaired.

  Next, the internal structure of the musical instrument main body 1 of the electronic keyboard instrument of the present embodiment will be described. FIG. 7 is an enlarged perspective view of a state in which the rack plate 51 and the splint 52 are attached to the left arm 4. FIG. 8 is an enlarged exploded perspective view of the arm 4, the rack plate 51, and the splint 52.

  Rack teeth 51 and guide grooves 56 are formed in the rack plate 51 in the front-rear direction. An insertion groove 58 corresponding to the outer shape of the rack plate 51 is formed on the inner side of the brace 4, and a storage groove 60 is formed that crosses the insertion groove 58 in the vertical direction and protrudes in the vertical direction of the insertion groove 58. . The storage groove 60 is formed deeper than the depth of the insertion groove 58 and is sized to store the cable 62.

  The splint 52 is attached to the upper side of the rack plate 51 on the inner side of the arm 4 and is attached so that the through hole 64 formed in the splint 52 overlaps the storage groove 60. A guide groove 66 is also formed on the inner side of the arm 4 in the front-rear direction. The same applies to the right arm 5 and is formed in a bilaterally symmetric structure. However, in this embodiment, the storage groove 60 is not formed in the right arm 5.

  When assembling, first, the rack plate 51 is inserted into the insertion groove 58 and attached to the arm 4 with the cable 62 stored in the storage groove 60. Then, the cable 62 is inserted into the through hole 64 of the splint 52 and the splint 52 is attached to the arm 4.

  In the present embodiment, the cable 62 is connected to a universal serial bus (USB) terminal 68 disposed on the front side of the musical instrument main body 1 above the keyboard lid 8 as shown in FIG. The cable 62 is not limited to the USB terminal 68 but may be an auxiliary storage device such as a floppy (registered trademark) disk drive or a CD-ROM drive.

  The keyboard lid 8 is configured to move while being guided by the guide groove 56 of the rack plate 51 and the guide groove 66 of the arm 4, and a pinion gear (not shown) rotatably provided on the keyboard lid 8 is provided. The rack teeth 54 are engaged with each other.

  When the keyboard lid 8 moves while being guided by the guide grooves 56 and 66, the keyboard lid 8 moves so as to intersect the cable 62. Since the cable 62 is stored in the storage groove 60, the keyboard cover 8 does not interfere with the cable 62. In addition, since the cable 62 is housed in the housing groove 60 and is not fixed by an adhesive tape or the like, the adhesive tape or the like is peeled off due to elapse of time or temperature rise, and the keyboard lid 8 and the cable 62 are separated. There is no interference. Even if the cable 62 passes through the outside of the rack plate 51, the instrument body 1 is not enlarged because it is housed in the housing groove 60.

  In addition, as shown in FIG. 9, the keyboard lid 8 can be moved and opened without any trouble in a state where the USB memory 70 is connected to the USB terminal 68. Therefore, the usability of the USB memory 70 or the like is good.

  The present invention is not limited to such embodiments as described above, and can be implemented in various modes without departing from the gist of the present invention.

It is a perspective view of the electronic keyboard musical instrument as one embodiment of the present invention. It is the disassembled perspective view which decomposed | disassembled the electronic keyboard musical instrument of this embodiment into the musical instrument main body and the stand of the state which covered the keyboard unit with the keyboard cover, and looked diagonally upward from diagonally downward. It is the disassembled perspective view which decomposed | disassembled the electronic keyboard instrument of this embodiment into the musical instrument main body and the stand of the state which covered the keyboard unit with the keyboard cover, and looked diagonally downward from diagonally upward. It is an expansion perspective view of the a part of FIG. It is an expansion perspective view of the b section of FIG. It is an expanded perspective view of the state which removed the keyboard cover and the top plate from the musical instrument main body of this embodiment. It is an expansion perspective view of the state which attached the rack board and the splint to the left arm of this embodiment. It is an expansion exploded perspective view of the left arm, a rack board, and a splint of this embodiment. It is a perspective view in the state where the keyboard lid of the electronic keyboard musical instrument of this embodiment was closed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Musical instrument body 2 ... Stand 4, 5 ... Arm 4a, 5a ... Step 6 ... Keyboard unit 8 ... Keyboard lid 10 ... Operation panel 11 ... Top plate 12 ... Pedal base 14, 16 ... Tsum base 18, 20 ... Master board 18a , 20a ... inner side surfaces 18b, 20b ... front surface 22 ... back plates 24, 26 ... guide grooves 24a, 26a ... lower side surfaces 26c, 26d ... chamfered portions 30, 32 ... projections 34 ... bottom plate 36 ... projections 38 ... restriction grooves 40, 42 ... metal fittings 51 ... rack plate 52 ... splint 54 ... rack teeth 56, 66 ... guide groove 60 ... storage groove 62 ... cable 68 ... USB terminal 70 ... USB memory

Claims (7)

In an electronic keyboard instrument with the instrument body attached to the stand,
The stand includes left and right parent plates that are vertically opposed to each other, and guide grooves are formed on inner surfaces of the left and right parent plates that are opposed to each other so that both left and right ends of the instrument body can be inserted. An electronic keyboard instrument characterized in that guide grooves are formed rearward from the front surfaces of the left and right parent plates, both left and right ends of the instrument body are inserted into the guide grooves, and the instrument body is attached to the stand.   The electronic keyboard instrument according to claim 1, wherein a chamfered portion is formed on a front side of the main plate of the guide groove.   The electronic keyboard instrument according to claim 1, wherein protrusions inserted into the guide grooves are provided at both left and right ends of the instrument body.   The electronic keyboard instrument according to claim 3, wherein a chamfered portion is formed on a tip end side of the protruding portion.   A protrusion protruding in a direction parallel to the standing direction of the parent plate on one of the left and right ends of the instrument body and the left and right parent plates, and a restriction groove into which the protrusion can be fitted on the other; and The electronic keyboard instrument according to any one of claims 1 to 4, wherein the protrusion and the restriction groove are inserted when the left and right ends of the instrument body are inserted into the guide groove.   Protrusions that can be inserted into the guide grooves are provided at both left and right ends of the instrument body, and the protrusions are provided at the left and right protrusions of the instrument body, respectively, and in the guide grooves of the left and right parent plates. The electronic keyboard instrument according to claim 5, wherein the restriction groove that opens is provided.   The electronic keyboard musical instrument according to any one of claims 1 to 6, wherein a screw for fixing a member disposed in the musical instrument main body is inserted into the protrusion from the outside of the musical instrument main body.

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