JP5343434B2 - Keyboard instrument and method of assembling the same - Google Patents

Description

The present invention relates to a keyboard instrument in which a keyboard instrument body is supported by a pair of left support and right support, and a method for assembling the keyboard instrument.

  2. Description of the Related Art Conventionally, a keyboard instrument is known in which left and right ends of a keyboard instrument body are supported by a pair of left support and right support. In this type of musical instrument, there is a musical instrument in which a connecting member such as a back plate or a saddle is bridged between both supports in order to reinforce both left and right supports (Patent Documents 1 and 2 below).

  In the conventional technique shown in the following Patent Document 1 and the following Patent Document 2, an L-shaped fixing member in which a round hole for fastening is formed is provided on the inner surface of both supports, and a screw hole is formed in the connecting material. Are provided and are screwed into the screw holes of the connecting member with screws through the round holes of the fixing member, so that both supports are connected and fixed with the connecting member.

In this type of musical instrument, at the time of assembly, it is usual that both supports are first connected and fixed with a connecting material, and then the instrument body is disposed and fixed at the upper end of both supports.
Japanese Utility Model Publication No. 5-81891 Utility Model Registration No. 2568940

  However, in the above-described conventional musical instrument, the distance between the two supports is determined by the length of the connecting member. Therefore, when the instrument main body is supported by the two supports, the left and right end positions of the instrument main body and the two supports are assumed to be When it is desired to make the two sides flush with each other, it is necessary to increase the accuracy of the distance between the two supports and to increase the positional accuracy of fixing the instrument body and the two supports.

  However, since it is usually difficult to provide such a high degree of accuracy, the outer surface of the instrument body is external to both supports in order to ensure that the instrument body is securely supported by both supports. It is easy in design to be configured to protrude from the side to the left and right. For this reason, the instrument body and the outer surfaces of both supports are not flush with each other, and usually a step is generated. That is, it has been difficult to design with high precision by giving priority to the positional relationship between the keyboard instrument body and the two supports.

The present invention has been made to solve the above-described problems of the prior art, and its purpose is to maintain the accuracy of the positional relationship between the keyboard instrument body and both supports while maintaining an appropriate reinforcing function of both supports. It is an object of the present invention to provide a keyboard instrument and a method for assembling the same that can facilitate a design that enhances the design.

Keyboard instrument according to claim 1 of the present invention in order to achieve the above object, a keyboard musical instrument having a plurality of keys (30), the left side of the order to support respectively the left end and the right end of the keyboard instrument body support (10L) and the right support (10R), connecting members for connecting the left support and the right support (20), to the left side support member and said right side support, said keyboard Positioning and fixing means for fixing the left end portion and the right end portion of the instrument main body while performing relative positioning in the key arrangement direction of the keyboard instrument, and the left and right support bodies by the positioning and fixing means. The connection member is connected and fixed to the both supports while adjusting the position in the key arrangement direction with the left end portion and the right end portion of the keyboard instrument body positioned and fixed. Keyboard instrument and having an adjustable fastening means possible.
In order to achieve the above object, a keyboard instrument assembling method according to claim 3 of the present invention includes a keyboard instrument body having a plurality of keys, and a left side for supporting the left and right ends of the keyboard instrument body. A keyboard instrument assembly method comprising: a support body and a right support body; and a connecting member for connecting the left support body and the right support body, wherein the left support body and the right support body are The left end and the right end of the keyboard instrument body are fixed while being relatively positioned in the key arrangement direction of the keyboard instrument, and the left end of the keyboard instrument body with respect to the left support and the right support In the state where the portion and the right end portion are positioned and fixed, the connecting member is connected and fixed to the both supports while adjusting the position in the key arrangement direction.

  In addition, the code | symbol in the said parenthesis is an illustration.

According to the first and third aspects of the present invention, it is possible to facilitate a design that increases the accuracy of the positional relationship between the keyboard instrument body and both supports while maintaining an appropriate reinforcing function of both supports. .

According to the second aspect , the position of the connecting member can be adjusted with a simple configuration.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  Fig.1 (a) is the perspective view which looked at the keyboard musical instrument which concerns on one embodiment of this invention from back. FIG. 1B is a left side view of the keyboard instrument.

  In this keyboard instrument, a keyboard instrument body 30 is supported by a stand 1. The keyboard instrument body 30 is configured as an electronic keyboard instrument including a keyboard unit 31 composed of a plurality of keys. Hereinafter, in the keyboard instrument, the left-right direction is referred to based on the front view direction as viewed from the player side. Therefore, the key arrangement direction of the keyboard unit 31 is the left-right direction.

  FIG. 2 is a rear view of the keyboard instrument. The stand 1 is configured by assembling a pair of left and right left side supports 10L and right side support 10R and a collar 20 that is a connecting member having a function of connecting and reinforcing these supports 10L and 10R. The supports 10L and 10R are symmetrical.

  3A, 3B, and 3C are a front view, a plan view, and a right side view of the left support 10L, respectively. As a representative, the configuration of the left support 10L and the vicinity thereof will be mainly described.

  As shown in FIGS. 3A to 3C, the left side support 10L has a flat side plate 11L, and the grounding portion 13 is fixed to the lower end of the side plate 11L at two locations. A notch 12 is formed at the upper end of the side plate 11L. The notch 12 is formed from the rear end of the left support 10L to the middle of the front end on the inner side surface 11bL of the side plate 11L, and has a bottom surface 12a, a side surface 12b, and a front end surface 12c.

  A first fixing member 14L is provided on the inner side surface 11bL of the side plate 11L. The notch 12 is provided with second fixing members 15L at two front and rear positions. The first fixing member 14L and the second fixing member 15L are both made of metal and formed in an L shape.

  The first fixing member 14L is integrally formed of a fixing piece 14bL and a protruding piece 14aL. The first fixing member 14L is fixed to the side plate 11L by fixing the fixing piece 14bL to the inner side surface 11bL of the side plate 11L with a plurality of (three) screws. Thereby, the protruding piece 14aL protrudes rightward and is parallel to the left-right direction and the up-down direction. However, it does not have to be configured to be parallel to the vertical direction. A plurality (three) of elongated holes 14c are formed in the protruding piece 14aL (see FIG. 3A). The number of the long holes 14c does not matter. In the state where the first fixing member 14L is fixed to the side plate 11L, the long hole 14c is long in the left-right direction.

  The second fixing member 15L is integrally formed of a first piece 15aL and a second piece 15bL. The second piece 15bL is fixed to the side surface 12b of the notch 12 with a plurality of (three) screws while the first piece 15aL is in contact with the bottom surface 12a of the notch 12. The fixing member 15L is fixed to the side plate 11L. Thereby, the first piece 15aL protrudes rightward and becomes horizontal, and the second piece 15bL protrudes upward and becomes parallel to the front-rear direction and the up-down direction. Each of the first pieces 15aL has one round fastening hole 15c (see FIG. 3B).

  Since the right support 10R is symmetrical with the left support 10L, as shown in FIG. 2, the first fixing member 14R provided on the inner surface 11bR of the side plate 11R and the notch 12 of the side plate 11R are provided. The second fixing member 15R to be corresponded to the first fixing member 14L and the second fixing member 15L, respectively. The first fixing member 14R is integrally formed with the fixing piece 14bR and the protruding piece 14aR, and the second fixing member 15R is integrally formed with the first piece 15aR and the second piece 15bR.

  As shown in FIG. 2, the keyboard instrument body 30 has a left end 30a and a right end 30b supported by the upper ends of the left support 10L and the right support 10R, respectively. Further, the left end 20a and the right end 20b of the flange 20 are fixed to the first fixing member 14L of the left support 10L and the first fixing member 14R of the right support 10R, respectively. The left support 10L, the right support 10R, and the keyboard instrument body 30 have the same length in the front-rear direction, and the front end face and the rear end face thereof are flush with each other (see FIG. 1B). The color scheme on each side is also matched. As a result, each of them is designed to be integrated.

  FIG. 4 is an enlarged front view of the upper left portion of the keyboard instrument. Since the right end portion of the keyboard instrument is also symmetrically configured in the same manner, the left end portion will be mainly described.

  A stepped shape corresponding to the upper end surface 11c of the side plate 11L and the notch 12 is formed on the left end 30a of the keyboard instrument body 30. The left end 30a is formed with a slit hole 17 into which the second piece 15bL of the second fixing member 15L is fitted. In a state in which the keyboard instrument body 30 is disposed on the stand 1, the second piece 15bL is fitted into the slit hole 17, and the lower surface 30c of the keyboard instrument body 30 is in contact with the first piece 15aL of the second fixing member 15L. It touches.

  A screw hole is formed in the lower surface 30c of the keyboard instrument body 30 at a position corresponding to the fastening hole 15c (see FIG. 3B) of the first piece 15aL, and is fastened from below with a screw (not shown). The first piece 15aL and the lower surface 30c of the keyboard instrument main body 30 are fixed via the use hole 15c.

  The second piece 15bL and the slit hole 17 perform a relative positioning function in the key arrangement direction (left-right direction) of the keyboard instrument body 30 with respect to the stand 1. In a state where the keyboard instrument body 30 is disposed on the stand 1, as shown in FIG. 4, the left end position pL of the keyboard instrument body 30 and the outer surface 11aL of the side plate 11L coincide with each other in the left-right direction. Yes. The same applies to the right end portion, and the right end position pR of the keyboard instrument body 30 and the outer side surface 11aR of the side plate 11R coincide with each other in the left-right direction (see FIG. 2).

  Further, as shown in FIG. 4, the rear surface of the left end portion 20a of the flange 20 is a blind hole corresponding to the elongated hole 14c (see FIG. 3A) of the fixing piece 14bL of the first fixing member 14L. A screw hole 21 is formed. In a state in which the keyboard instrument body 30 is disposed on the stand 1, the length of the flange 20 is slightly shorter than the distance between the inner side surface 11bL of the side plate 11L and the inner side surface 11bR of the side plate 11R.

  As shown in FIG. 2, the left end portion 20a and the right end portion 20b of the heel 20 are screwed into the screw holes 21 through the long holes 14c of the fixing pieces 14bL and 14bR, thereby the first fixing member. It is fixed to 14L and 14R, respectively. When fixed, the position in the left-right direction of the flange 20 can be arbitrarily selected within a range in which the elongated hole 14c and the screw hole 21 are matched. The direction position can be adjusted.

  As shown in FIG. 4, there may be a gap between the left end 20a of the flange 20 and the inner side surface 11bL of the side plate 11L, but an embedding material 22 such as urethane is interposed in the gap so as not to impair the appearance. I have to. The same applies to the right end 20b of the collar 20. Further, since the notch 12 is formed only from the rear end to the middle of the front end of the supports 10L and 10R (see FIG. 3C), the contour of the surface of the keyboard instrument body 30 facing the side surface 12b is formed. It hides from the front and looks nice.

  The keyboard instrument is assembled in the following procedure. Like the general assembly, the keyboard instrument body 30 may be supported after the stand 1 is assembled first. However, in the present embodiment, the keyboard instrument body 30 is attached to the left support body 10L and the right support body 10R. After the heel 20 is supported, the heel 20 is bridged between the left side support body 10L and the right side support body 10R.

  First, the first fixing members 14L and 14R, the second fixing members 15L and 15R, and the grounding portion 13 are attached to the side plates 11L and 11R, and the left support body 10L and the right support body 10R are manufactured. Next, the left end 30a and the right end 30b of the keyboard instrument main body 30 are fixed to the upper ends of the side plates 11L and 11R. At this time, if there are a plurality of workers, the keyboard instrument body 30 may be supported and fixed in a state where the left support 10L and the right support 10R are erected straight. However, in the present embodiment, assuming that there is one worker, a method of attaching the left support 10L and the right support 10R to the keyboard instrument body 30 with the top and bottom reversed once. .

  For example, the attitude of the keyboard instrument body 30 is maintained such that the lower surface 30c of the keyboard instrument body 30 is on the upper side and is horizontal. For this purpose, a dedicated jig may be provided, and the keyboard instrument body 30 may be held upside down on the jig. Then, the left support 10L and the right support 10R are turned upside down, and the second pieces 15bL corresponding to the second fixing members 15L and 15R are inserted into the left and right slit holes 17 (see FIG. 4) of the keyboard instrument body 30, respectively. Insert and fit 15bR. Then, when the lower surface 30c of the keyboard instrument main body 30 is brought into contact with the first pieces 15aL and 15aR of the second fixing members 15L and 15R, the fastening holes 15c (see FIG. 3B) are formed with screws (not shown). The first pieces 15aL and 15aR and the lower surface 30c of the keyboard instrument body 30 are screwed and fixed to each other.

  Next, the left side support body 10L and the right side support body 10R that have supported the keyboard instrument main body 30 are raised, and the grounding portion 13 is grounded to the floor surface. Then, the screw 16 is screwed into the screw hole 21 of the left end 20a and the right end 20b of the flange 20 from the rear through the elongated holes 14c of the projecting pieces 14aL and 14aR, so that the left end 20a and the right end 20b is fixed to the first fixing members 14L and 14R, respectively. At that time, the position of the flange 20 in the left-right direction is set appropriately, and for example, the gap between the left end 20a and the inner side surface 11bL of the side plate 11L and the gap between the right end 20b and the inner side surface 11bR of the side plate 11R are equalized. Like that. Thereafter, both the left and right gaps are filled with the filling material 22.

  As described above, the positional relationship between the keyboard instrument body 30, the left support 10L and the right support 10R in the left-right direction is defined by the engagement between the slit hole 17 and the second pieces 15bL and 15bR (see FIG. 4). ). Therefore, although it is practically possible to select some positions in the left-right direction depending on the degree of fitting tolerance and manufacturing accuracy in both designs, this does not mean that an intentional adjustment range is provided. . On the other hand, the position adjustment mechanism in the left-right direction of the flange 20 with respect to the left support body 10L and the right support body 10R is intentionally provided, and the adjustable range thereof is the keyboard instrument body 30, the left support body 10L, It is overwhelmingly larger than the position selection range (or substantially adjustable range) with the right support 10R. Therefore, at the time of assembly, the positional relationship between the keyboard instrument body 30 and both supports 10L and 10R can be determined with priority while maintaining an appropriate reinforcing function of both supports 10L and 10R.

  According to the present embodiment, the collar 20 is connected to the left support 10L and the right support 10R via the first fixing members 14L and 14R so that the position in the key arrangement direction can be adjusted. Further, it is possible to facilitate a design that increases the accuracy of the positional relationship between the keyboard instrument body 30 and both the supports 10L and 10R while maintaining an appropriate reinforcing function of the supports 10L and 10R. For example, in the present embodiment, priority is given to the positioning of the keyboard instrument body 30, the left support body 10L, and the right support body 10R, and the left end position pL, the right end position pR of the keyboard instrument body 30 and the outer surface 11aL of the side plates 11L, 11R. , 11aR and the position in the left-right direction can be matched, and no step is generated.

  Moreover, since the slit hole 17 and the second pieces 15bL, 15bR perform the positioning function in the left-right direction between the keyboard instrument body 30 and the supports 10L, 10R, the keyboard instrument body 30 can be used as the supports 10L, 10R. On the other hand, it can be supported in a desired positional relationship determined by design.

  Further, the position adjusting mechanism of the rod 20 with respect to both the supports 10L and 10R uses the long holes 14c provided in the projecting pieces 14aL and 14aR, so that a simple configuration is sufficient.

  In addition, the first fixing members 14L and 14R are L-shaped metal fittings and are hidden from the player side by the heel 20 and the embedding material 22, so that they do not deteriorate the appearance as compared to the T-shape, and the installation space is also increased. It's small.

  In the present embodiment, the elongated hole 14c is provided in the projecting pieces 14aL and 14aR of the first fixing members 14L and 14R, but conversely, the elongated hole corresponding to the elongated hole 14c is provided in the flange 20 A screw hole corresponding to the screw hole 21 may be provided in the projecting pieces 14aL and 14aR. In addition, the fixing member that fixes the flange 20 and the first fixing members 14L and 14R is not limited to the screw 16, and may be any member that can be fixed through the elongated hole 14c.

  In addition, the positioning mechanism in the left-right direction between the keyboard instrument body 30 and the supports 10L and 10R is not limited to the combination of the slit hole 17 and the second pieces 15bL and 15bR. For example, the position may be regulated by the contact between the side surface 12b (see FIG. 4) of the notch 12 and the surface of the keyboard instrument body 30 facing it.

  In the present embodiment, the position adjustment mechanism of the keyboard instrument body 30 is not provided, but may be provided. For example, the positioning mechanism of the slit hole 17 and the second pieces 15bL and 15bR is abolished, and the fastening hole 15c (see FIG. 3B) is a long hole that is long in the key arrangement direction. When the keyboard instrument main body 30 is assembled, the left and right positions of the left end position pL and right end position pR of the keyboard instrument main body 30 and the outer surfaces 11aL and 11aR of the side plates 11L and 11R are adjusted by eye measurement or using a jig. , And screw fastening.

  In addition, the fixing position of the collar 20 with respect to the side plates 11L and 11R does not matter. Moreover, what is necessary is just the structure connected so that the relative position of the left-right direction of the collar 20 with respect to the side plates 11L and 11R is adjustable, and it is not restricted to the connection via the first fixing members 14L and 14R.

It is the perspective view (figure (a)) which looked at the keyboard musical instrument which concerns on one embodiment of this invention from the back, The left view (figure (b)) of the keyboard musical instrument. It is a rear view of this keyboard instrument. They are a front view (figure (a)), a top view (figure (b)), and a right side view (figure (c)) of a left support. It is an enlarged front view of the upper left part of this keyboard instrument.

Explanation of symbols

  1 stand, 10L left side support, 10R right side support, 11L, 11R side plate, 11bL, 11bR inner surface, 14L, 14R first fixing member (fixing member), 14aL, 14aR protruding piece, 14c long hole, 15bL, 15bR 2nd piece (positioning part), 16 screw (fixing member), 17 slit hole (positioning part), 20 hook (connecting material), 30 keyboard instrument body, 30a left end part, 30b right end part

Claims (3)

A keyboard instrument body having a plurality of keys;
A left side support member and the right support order to support the left end and the right end of the keyboard instrument body, respectively,
A coupling member for coupling the left support and the right support,
Positioning fixing means for fixing the left end portion and the right end portion of the keyboard instrument body to the left support body and the right support body while performing relative positioning in the key arrangement direction of the keyboard instrument;
In the state where the left end and the right end of the keyboard instrument main body are positioned and fixed with respect to the left support and the right support by the positioning and fixing means, the connecting member is attached to both the supports. A keyboard instrument comprising adjustable fixing means capable of being connected and fixed while adjusting a position in a key arrangement direction . The adjustable fixing means is
A fixing member provided on each inner surface of the left support and the right support facing each other, and having a protruding piece protruding in parallel with the key arrangement direction ;
A long hole provided in either one of the protruding pieces of the both fixing members and the connecting member, and a long hole in the key arrangement direction ;
Through the long holes, claim 1 wherein the coupling member, characterized by such a position is adjustable in the key arrangement direction, that is composed of a fixing member for fixing to the front Symbol both projecting portions serial placement of the keyboard instrument. A keyboard instrument body having a plurality of keys, a left support and a right support for supporting the left end and right end of the keyboard instrument main body, and a connection for connecting the left support and the right support, respectively. A method for assembling a keyboard instrument having a material,
The left end and the right end of the keyboard instrument main body are fixed to the left support and the right support while being relatively positioned in the key arrangement direction of the keyboard instrument,
With the left end and the right end of the keyboard instrument body positioned and fixed with respect to the left support and the right support, the connecting member is connected to both supports in the key arrangement direction. A method of assembling a keyboard instrument, characterized by connecting and fixing the position while adjusting the position.

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