JP4479246B2 - Musical instrument - Google Patents

Description

  The present invention relates to a musical instrument including a lid fixing portion for connecting a lid portion that opens and closes the surface of a musical instrument body to the musical instrument body, and an operation panel portion on which a musical tone parameter setting operator is installed.

Conventionally, a musical instrument main body has been provided with an operation panel section on which a performance operation section composed of a keyboard and a musical tone parameter setting operation section are installed, and a lid section for opening and closing the surface of the performance operation section and the operation panel section. A musical instrument provided with is used for performance. In such a musical instrument, a lid fixing portion and an operation panel portion for attaching the lid portion to the musical instrument main body are fixed to the musical instrument main body using fixing members such as screws and nuts (for example, Patent Document 1).
Japanese Patent No. 3405166

  However, the conventional musical instrument has a problem that the assembling work becomes complicated because the number of parts of the fixing member for fixing the operation panel portion and the lid fixing portion to the musical instrument main body is large. Further, there is a problem that loosening occurs in the fixing member over time and rattling occurs in the operation panel portion and the lid fixing portion.

  The present invention has been made to address the above-described problems, and its object is to easily assemble the operation panel unit and the lid fixing unit to the instrument main body with a fixing member having a small number of parts, and can be used for a long time. It is to provide a musical instrument that does not rattle.

To achieve the above object, features in construction of the instrument according to the present invention, the instrument body performance operator unit is provided, and an operation panel portion provided at the rear of a performance operator of the instrument, instrument a lid fixed portion attached to the rear of the operation panel in the body, the surface of the performance operation terminal part and an operation panel unit by turning rotatably connected to via a hinge portion to the front of the cover fixing part A lid portion that opens and closes, a locking member fixed to the front portion of the lid fixing portion, and a fixing member that fixes the operation panel portion to the instrument body, and the rear portion of the lid fixing portion is fixed to the instrument body by the fixing member Then, the front part of the lid fixing part is fixed to the musical instrument main body and the operation panel part by the engagement of the locking member and the fixing member .

In the musical instrument according to the present invention configured as described above, the operation panel unit is fixed to the musical instrument main body using the fixing member. Then, the locking member that can be engaged with the fixing member is fixed to the lid fixing portion, and the locking member is engaged with the fixing member, thereby fixing the lid fixing member to the instrument body. Therefore, the troublesome work of fixing each part of the operation panel part and the lid fixing part with a large number of screws or the like as in the conventional musical instrument is not required, and the operation panel part and the lid fixing part are not attached to the instrument body. Easy assembly . Further, it is preferable that the locking member and the fixing member are fixed to the lower surface of the lid fixing portion, and the locking member and the fixing member are engaged with each other by an engagement piece and an engagement hole that can be engaged with each other. Furthermore, it is preferable that the musical instrument main body includes a side plate, and the operation panel unit is fixed to the side plate by a fixing member.

  In addition, other structural features of the musical instrument according to the present invention include a damper mechanism main body attached to a side plate included in the musical instrument main body, one end rotatably held by the damper mechanism main body, and the other end rotated to the lid portion. It has a stay that is held freely. According to this, the lid part is hinged to the lid fixing part, and the opening / closing part is connected to the side plate of the instrument body via the damper mechanism body and the stay. Installation is more secure.

  In addition, the damper mechanism consisting of the damper mechanism body and the stay has a lower resistance when the lid is lifted and opened, making it easier to open the lid, and a higher resistance when the lid is lowered and closed. What is comprised so that a part may fall only gradually is used. Accordingly, the opening / closing operation of the lid is performed in a state where there is little impact by the damper mechanism, and even when used for a long period of time, the operation panel portion and the lid fixing portion are less likely to loosen to the instrument body.

  In the musical instrument according to the present invention, the lid fixing part can be attached to the upper part of the instrument main body, and a decorative plate can be provided on the upper surface of the lid fixing part. This decorative board has a function as a decoration for improving the appearance of the musical instrument and a function as a reflecting board for reflecting the musical sound generated by the musical instrument toward the front to improve the sound quality. By attaching this decorative plate to the upper surface of the lid fixing portion, a function as a weight for pressing the lid fixing portion also occurs, and the fixing of the lid fixing portion to the instrument body can be made stronger.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 3 show an electronic keyboard instrument M as a musical instrument according to the present invention. The electronic keyboard instrument M includes a musical instrument main body 10, a lid mechanism 20 having a lid portion 21 that opens and closes the surface (upper surface) of the musical instrument main body 10, and a damper mechanism 30, and a leg body that supports the rear center of the musical instrument main body 10. A unit 40 and leg portions 47a and 47b for supporting both sides of the front portion of the musical instrument main body 10 are provided. In addition, a gate-shaped decorative board 50 is attached to the rear portion of the musical instrument main body 10 so as to surround both side portions and the upper end portion of the leg unit 40.

  The instrument body 10 is formed in a box shape elongated in the left-right direction in the state shown in FIGS. 1 and 2 (as viewed from the player side and will be described based on this direction), and constitutes both sides. The timepieces 11a and 11b are respectively attached to the upper front side portions of the inner surfaces of the side plates 10a and 10b. A keyboard section 12 is provided between the time signature trees 11a and 11b as a performance operator section of the present invention, which is composed of a plurality of keys for playing the electronic keyboard instrument M.

  In addition, an operation panel unit 13 in which a plurality of musical tone parameter setting operators and the like are installed is provided behind the keyboard unit 12 on the upper surface of the musical instrument body 10. A lid fixing portion 22 having a height higher than that of the keyboard portion 12 and the operation panel portion 13 is attached to the rear surface of the operation panel portion 13 on the upper surface of the musical instrument body 10, and is folded on the front end surface of the lid fixing portion 22. A lid 21 of the type is hinged.

  FIG. 4 shows a state in which the lid part 21, the lid fixing part 22, and the decorative board 50 are removed from the electronic keyboard instrument M and the inside of the rear part of the instrument body 10 is exposed. As shown in FIG. 4, an electronic circuit unit 14 composed of various circuit boards and the like is installed in the instrument body 10. Further, below the keyboard unit 12 and the operation panel unit 13 in the musical instrument main body 10, a detection device for detecting a key pressing force or the like by a key pressing operation, the upper and lower limit positions of the key are regulated or pressed. A return mechanism or the like (not shown) for returning the key to the upper limit position is provided. The detection device includes an actuator, a sensor, a switch board, and the like, and the return mechanism includes a return spring, a stopper that regulates the lower limit position and the upper limit position of the key, and the like.

  Further, a concave portion 15 is formed in the approximate center of the rear portion of the musical instrument main body 10, and cutout concave portions 16 a and 16 b are formed on both sides of the rear portion of the musical instrument main body 10. From the recess 15, a connection cord 15 a for connecting the electronic keyboard instrument M to other devices can be drawn out. Further, as shown in FIG. 5, the left end of the bottom plate 10c of the instrument body 10 is fixed to the lower end of the inner surface of the side plate 10a by the fixing member 17 and the screw 18, and the rear end of the bottom plate 10c is the fixing member. It is fixed to the lower end of the inner surface of the back plate (see FIGS. 1 and 4) 10d by a fixing member (not shown) similar to 17 or the like.

  The lid fixing portion 22 is composed of a plate body having substantially the same shape as a rear side portion (a rear side portion of the operation panel portion 13 in FIG. 4) in a plan view of the musical instrument main body 10, and both side portions at the lower rear edge portion. And the central portion are fixed to the back plate 10d of the musical instrument main body 10 by fixing members 17a, 17b, and 17c. Further, as shown in FIG. 5, a locking member 23 is fixed by a screw 24a in the vicinity of the left end portion of the lower surface of the lid fixing portion 22. The locking member 23 includes a fixing piece 23a fixed to the lower surface of the lid fixing portion 22, a vertical piece 23b extending downward along the rear end surface portion 13a of the operation panel portion 13, and a rear side from the lower end of the vertical piece 23b. It is comprised with the engagement piece 23c extended horizontally toward it.

  Further, the left end side portion of the operation panel portion 13 is fixed to the side plate 10 a of the musical instrument main body 10 by a fixing member 25. The fixing member 25 includes a fixed piece 25a fixed to the upper portion on the rear side of the side plate 10a, and an engaging piece 25b whose upper portion extends along the rear end surface portion 13a of the operation panel portion 13 and whose lower portion extends below the rear end surface portion 13a. A vertical piece 25c extending horizontally from the right end (left side in FIG. 5) of the engagement piece 25b toward the front along the lower surface of the operation panel portion 13, and a tip portion at the upper end edge of the vertical piece 25c. And screwing portions 25d and 25e protruding in the vertical direction from the substantially central portion. An engagement hole 25f extending in the horizontal direction is formed at the center of the upper portion of the engagement piece 25b.

  The fixing piece 25a is fixed to the side plate 10a by screws 24b, and the screwing portions 25d and 25e are fixed to boss portions 13b and 13c formed on the lower surface of the operation panel portion 13 by screws 24c. The locking member 23 and the fixing member 25 are engaged by the engagement piece 23c being inserted into the engagement hole portion 25f, and by this engagement, the side plate 10a, the operation panel portion 13 and the lid are fixed. The part 22 is connected.

  A timepiece 11a is fixed to the upper part of the inner surface of the side plate 10a via a fixing member 19 and a screw 19a, and a damper mechanism 30 is attached to the rear of the timepiece 11a on the inner surface of the side plate 10a. The damper mechanism 30 includes a damper mechanism main body 31 attached to the musical instrument main body 10 side, and a stay 32 that connects the damper mechanism main body 31 and the lid portion 21. The damper mechanism main body 31 includes a torque shaft unit (a main body side portion is not shown) including a torque shaft 33 and a rotating member 34.

  The torque shaft unit is configured by incorporating a cylindrical friction member inside a cylindrical main body and incorporating a torque shaft 33 inside the friction member. The torque shaft unit also includes a clutch mechanism that freely rotates the torque shaft 33 in one direction with respect to the main body and makes it difficult to rotate in the other direction. Due to the action of the friction member and the clutch mechanism, when the torque shaft 33 rotates in the clockwise direction in FIG. 5, the resistance force to the rotation increases, and when the torque shaft 33 rotates in the counterclockwise direction. It is comprised so that the resistance force with respect to rotation may become small.

  The rotating member 34 is formed of an oval plate-like body, and is fixed to the torque shaft 33 in a state where the torque shaft 33 is passed through a hole formed on one end side. Rotate. And the one end part (lower end part) of the stay 32 is attached to the other end side of the rotation member 34 in the state which can be rotated. A support shaft 35 is provided at the lower end of the stay 32, and this support shaft 35 is rotatably attached to a hole provided on the other end side of the rotation member 34.

  The lid portion 21 includes a rear lid 21a and a front lid 21b. The upper end edge of the front end surface of the lid fixing portion 22 and the rear lid 21a in a state where the lid portion 21 is closed (a state indicated by a solid line in FIG. 3). The upper end edge of the rear end surface is connected by a hinge 26a, and the upper end edge of the front end surface of the rear lid 21a and the upper end edge of the rear end surface of the front lid 21b are connected by a hinge 26b. Therefore, from the state shown by the two-dot chain line in FIG. 3, the rear lid 21a and the front lid 21b are rotated forward about the hinge 26a, and further the front lid 21b is rotated forward about the hinge 26b. Thus, the keyboard part 12 and the operation panel part 13 can be covered with the lid part 21.

  Further, the other end portion (upper end portion) of the stay 32 is provided in a state in which the other end portion (upper end portion) of the stay 32 is rotatable with respect to the rear lid 21a at the left end portion of the rear lid 21a in the state of FIGS. A connecting portion 37 having a support shaft 36 is attached to the rear lid 21a, and a hole provided near the upper end portion of the stay 32 is rotatably attached to the support shaft 36. For this reason, with the rotation of the lid portion 21, the stay 32 moves and the rotation member 34 rotates to make the damper mechanism main body 31 difficult to move. Then, the lid 21 is supported in an upright state when the lid 21 is opened and folded at the center of the lower front end of the front lid 21b, and when the lid 21 is closed, A support portion 27 is provided that abuts and maintains the lid portion 21 in a horizontal state.

  The leg unit 40 is integrally connected to the rear center of the lower surface of the musical instrument main body 10 to support the rear portion of the musical instrument main body 10 and is formed in a box shape elongated in the left-right direction and the vertical direction. . The leg unit 40 includes a circuit component housing portion 40a located in the center and speaker boxes 41a and 41b provided on both sides of the circuit component housing portion 40a. The circuit component housing portion 40a is formed in a rectangular parallelepiped box shape. And pedals 42a, 42b, and 42c are provided at regular intervals in the horizontal direction below the circuit component housing portion 40a.

  Holes 43a, 43b, and 43c are formed in the lower part of the front wall 40b of the circuit component housing part 40a. The pedals 42a, 42b, and 42c are connected to the front parts from the holes 43a, 43b, and 43c, respectively. It is attached in a state where it protrudes forward and can be moved up and down. The lower part in the circuit component housing part 40a can be ventilated by the holes 43a, 43b, 43c. Further, a pedal sensor, a driving circuit board, and the like (not shown) are provided in the vicinity of the pedals 42a, 42b, and 42c in the lower part of the circuit component housing portion 40a. Furthermore, a power supply inlet 44 formed of a recess is formed in the rear wall portion of the circuit component housing portion 40a, and a vent hole (not shown) is formed in the peripheral portion thereof. Various devices such as a power transformer, a circuit board, and an amplifier are attached to the inner surface of the rear wall portion of the circuit component housing portion 40a.

  The speaker boxes 41a and 41b are composed of triangular prismatic boxes formed symmetrically, and are installed on both sides of the circuit component housing portion 40a. Speaker boxes (not shown) for generating musical sounds are installed in the speaker boxes 41a and 41b. Electronic circuits and various devices provided in these electronic keyboard instruments M are connected by wiring (not shown). In addition, ventilation holes (not shown) are provided in the partition walls between the speaker boxes 41a and 41b and the circuit component housing portion 40a, respectively, and the front portions of the speaker boxes 41a and 41b facilitate the passage of sound. Therefore, it is composed of a perforated plate.

  And the attachment brackets 45a and 45b which consist of angles are attached to the lower end part in the outer surface of the speaker boxes 41a and 41b. Support protrusions 46a, 46b, and 46c are provided at both end portions and the central portion of the rear end portion of the lower surface of the circuit component housing portion 40a, respectively. The leg unit 40 is supported by the support protrusions 46a, 46b, and 46c so that the lower surface does not directly contact the floor surface.

  The leg portions 47 a and 47 b are fixed to both ends of the front portion of the musical instrument main body 10 and support the front portion of the musical instrument main body 10. The inner and rear sides of the upper portions of the legs 47a and 47b are also connected to the lower surface of the musical instrument main body 10 via reinforcing members 48a and 48b, thereby being more firmly connected to the musical instrument main body 10. . Also, support protrusions 49a and 49b are provided on the lower end surfaces of the legs 47a and 47b, and the main body portion of the electronic keyboard instrument M is located between the floor surface by the support protrusions 46a, 46b, 46c, 49a and 49b. Are provided with a predetermined gap.

  The decorative plate 50 is configured by assembling a central portion 51 constituting the upper center, and a left side portion 52a and a right side portion 52b extending downward from both sides of the central portion 51, and the central portion 51 is connected to the lid fixing portion 22. The left side 52a and the right side 52b are attached along the side surface of the leg unit 40, respectively. And the inner side part in the lower surface bottom part of the left side part 52a and the right side part 52b is attached to the main body side of the electronic keyboard instrument M by fixing to the mounting brackets 45a and 45b with the screw 53.

  When playing with the electronic keyboard instrument M configured in this way, first, a power source is connected via the power inlet 44, and the connection cord 15a is connected to a device necessary for performance, such as a controller. To get ready to play. Next, the lid part 21 is opened to expose the keyboard part 12 and the operation panel part 13. In this case, first, the front lid 21b is lifted upward from the state shown by the solid line in FIG. 3, and rotated about the hinge 26b so as to be stacked above the rear lid 21a. Next, the rear lid 21a and the front lid 21b in an overlapped state are lifted upward and rotated around the hinge 26a so as to be in a state indicated by a two-dot chain line in FIG.

  When the rear lid 21a and the front lid 21b rotate upward about the hinge 26a, the stay 32 is pulled by the rear lid 21a and tends to move upward. Further, the torque shaft unit is configured such that when the torque shaft 33 rotates counterclockwise, the resistance force against the rotation becomes small. Therefore, the torque shaft 33 can easily follow the rise of the stay 32. Rotate. For this reason, the operation of opening the rear lid 21a and the front lid 21b by rotating upward can be performed smoothly. Further, the rear lid 21a and the front lid 21b that are folded and rotated are supported by the support portion 27 and maintain an upright state.

  Then, the switches are turned on to operate the keys of the keyboard unit 12, the operators of the operation panel unit 13, the pedals 42a, 42b, 42c, and the like. As a result, the electronic keyboard instrument M generates musical sounds, sound effects, etc. from the speakers according to the functions of the various operators of the keyboard unit 12, the operation panel unit 13, and the pedals 42a, 42b, 42c and the like. In this case, among the musical sounds and sound effects generated from the speakers, the musical sounds spreading backwards are reflected forward by the decorative board 50 and are heard by the player with better sound quality.

  When the performance is finished, the switch is turned off and the lid 21 is closed. In this case, first, the rear lid 21a and the front lid 21b, which are overlapped from the state indicated by the two-dot chain line in FIG. 3, are rotated forward about the hinge 26a. At this time, the stay 32 is pushed by the rear lid 21a to move downward. At this time, the stay 32 presses the rear lid 21a upward according to the law of reaction, and this force tends to push up the front portion of the lid fixing portion 22 via the hinge 26a. The lid fixing portion 22 is fixed to the side plate 10 a of the musical instrument main body 10 by the locking member 23 and the fixing member 25 so as to withstand this force.

  Further, since the torque shaft unit is configured to increase the resistance to rotation when the torque shaft 33 rotates clockwise, the torque shaft 33 has a lid portion that is loaded via the stay 32. It rotates slowly with a load of 21. For this reason, the lid part 21 is gradually lowered without giving an impact to the lid fixing part 22 or the instrument body 10.

  Then, the front lid 21b is lifted upward and rotated forward about the hinge 26b to the state shown by the solid line in FIG. In this case, the lid portion 21 is supported by the support portion 27 and maintains a horizontal state. Further, when the lid 21 is opened and closed, a large load is applied to the lid fixing portion 22, but due to the engagement between the fixing members 17 a, 17 b, 17 c and the locking member 23 and the fixing member 25, etc. Since the lid fixing portion 22 is firmly fixed to the musical instrument main body 10, it does not rattle. Further, a decorative plate 50 is attached to the upper surface of the lid fixing portion 22, and the decorative plate 50 is a weight that presses the lid fixing portion 22 downward, so that the lid fixing portion 22 is fixed to the instrument body 10. Is more certain.

  As described above, in the electronic keyboard musical instrument M according to the present embodiment, the operation panel unit 13 is fixed to the musical instrument main body 10 using the fixing member 25. Then, the locking member 23 that can be engaged with the fixing member 25 is fixed to the lid fixing portion 22, and the locking member 23 is engaged with the fixing member 25, whereby the front portion at the left end portion of the lid fixing portion 22. Is fixed to the instrument body 10. Therefore, the troublesome work of fixing each part throughout the operation panel unit 13 and the lid fixing unit 22 with a large number of screws or the like becomes unnecessary, and the operation panel unit 13 and the lid fixing unit 22 are not attached to the instrument body 10. Easy assembly.

  The lid fixing portion 22 is fixed to the back plate 10d of the musical instrument main body 10 by a fixing member 17a or the like, and the lower front portion is fixed to the side plate of the musical instrument main body 10 by the locking member 23 and the fixing member 25. 10a is fixed. Accordingly, the lid fixing portion 22 is fixed without exposing the fixing member 17a and the like to the surface and without causing the front portion to wobble.

  Further, a damper mechanism main body 31 is attached to the musical instrument main body 10 side, and the damper mechanism main body 31 and the rear lid 21 a are connected by a stay 32. For this reason, the impact at the time of closing the cover part 21 is lost, and even if the electronic keyboard instrument M is used for a long time, the operation panel part 13 and the fixing part of the cover fixing part 22 are not easily loosened to the instrument body 10. Furthermore, since the decorative board 50 is attached to the upper surface of the lid fixing portion 22, the appearance of the electronic keyboard instrument M is improved and the sound quality of the musical sound generated by the electronic keyboard instrument M is improved. Further, the decorative plate 50 allows the lid fixing portion 22 to be pressed against the musical instrument main body 10, and the lid fixing portion 22 is more firmly fixed to the musical instrument main body 10.

  Further, the electronic keyboard instrument M according to the present invention is not limited to the above-described embodiment, and can be appropriately changed. For example, in the above-described embodiment, the musical instrument is an electronic keyboard musical instrument and the performance operator unit is a keyboard unit. However, the musical instrument according to the present invention is not limited to this, and a performance operator for performing a musical operation. Any musical instrument may be used as long as the musical instrument includes a lid fixing part for attaching the opening / closing lid part to the instrument body.

  Further, the shapes of the locking member and the fixing member can be appropriately changed according to the structure of other parts constituting the musical instrument. Furthermore, in the above-described embodiment, the decorative plate is configured by assembling the central part, the left side part, and the right side part, which are formed separately, but this decorative plate may be configured as a single unit. In addition, other parts constituting the musical instrument according to the present invention can be implemented with appropriate modifications within the technical scope of the present invention.

It is a top view which shows the electronic keyboard musical instrument which concerns on one Embodiment of this invention. It is a front view of the electronic keyboard instrument of FIG. It is a side view of the electronic keyboard instrument of FIG. It is a top view which shows the state which removed the decorating board, the top-plate part, and the cover part from the electronic keyboard musical instrument of FIG. It is a perspective view which shows the engagement state of a locking member and the adhering member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Musical instrument main body, 10a, 10b ... Side plate, 12 ... Keyboard part, 13 ... Operation panel part, 21 ... Lid part, 22 ... Lid fixing part, 23 ... Locking member, 25 ... Fixing member, 26a ... Hinge, 30 ... Damper mechanism, 31 ... Damper mechanism body, 32 ... Stay, 33 ... Torque shaft, 34 ... Rotating member, M ... Electronic keyboard instrument.

Claims (4)

An instrument body provided with a performance control section ;
An operation panel provided at the rear of the performance operator in the instrument body;
A lid fixed portion attached to the rear of the operation panel in the instrument the body,
A lid portion that is pivotably connected to a front portion of the lid fixing portion via a hinge portion, and that opens and closes the surfaces of the performance operator portion and the operation panel portion by turning;
A locking member fixed to the front portion of the lid fixing portion ;
A fixing member for fixing the operation panel unit to the instrument body;
The rear portion of the lid fixing portion is fixed to the instrument body by a fixing member, and the front portion of the lid fixing portion is engaged with the instrument body and the operation panel portion by engagement of the locking member and the fixing member. A musical instrument characterized by being fixed . Said locking member and said fixing member is fixed to the lower surface of the cover fastening units,請 Motomeko 1 and the locking member and the fixing member is engaged by and engageable engaging piece and the engaging hole with each other The instrument described in. The musical instrument according to claim 1, wherein the musical instrument main body includes a side plate, and the operation panel unit is fixed to the side plate by the fixing member. A damper mechanism main body attached to a side plate provided in the musical instrument main body, and a stay having one end pivotably held by the damper mechanism main body and the other end pivotally held by the lid portion. The musical instrument according to any one of 1 to 3.

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