JP5660290B2 - Keyboard instrument - Google Patents

Description

  The present invention relates to a keyboard instrument such as an electronic piano or an electronic organ.

  Conventionally, in a keyboard instrument, as described in Patent Document 1, a keyboard lid that covers a keyboard portion provided in the instrument body is supported by an arm member that is rotatably mounted in the instrument body so as to be opened and closed. An arrangement of the same structure is known.

JP 05-313653 A

  In such a keyboard instrument, when the keyboard lid is opened and closed, the arm member rotates in accordance with the opening and closing operation of the keyboard lid, so that a part of the arm member protrudes from the instrument body to the instrument body. A slit-like opening to be moved is provided. Thus, the arm member is configured to move from the upper part of the musical instrument main body to the rear part along the slit-like opening when rotating with the opening / closing operation of the keyboard lid.

  However, in such a conventional keyboard instrument, since the slit-shaped opening is provided from the upper part to the rear part of the instrument body, when the keyboard cover is opened, the part where the arm member is located is located. In addition, the slit-shaped opening is exposed to the outside of the upper side of the instrument body, and foreign objects such as dust and dust are liable to enter the instrument body from the exposed slit-shaped opening, as well as the exposed slit-shaped opening. There is a problem that the appearance and design of the entire musical instrument are impaired by the opening.

  The problem to be solved by the present invention is to provide a keyboard instrument that is preferable in terms of appearance and design, while preventing foreign matters such as dust from entering the instrument body from the opening of the instrument body.

In order to solve the above problems, the present invention includes the following components.
According to the first aspect of the present invention, a keyboard lid that covers a keyboard portion provided in the musical instrument main body is supported by an arm member that is rotatably mounted in the musical instrument main body, and the keyboard lid opens and closes. In this case, in the keyboard instrument in which a slit-like opening for moving a part of the arm member to protrude outside the instrument body extends from the upper part to the rear part of the instrument body, Except where the part of the arm member protruding outside the main body is located, a blindfold member that covers the opening so as to be openable and closable, a fixing member provided in the instrument main body, and a fixing member An interlocking member that is rotatably attached and has the blindfold attached to one end thereof, and the interlocking member rotates about the fixed member by the arm member when the keyboard cover is opened. Previous The screening member is moved toward the opening, moving the blindfold member to a position to close the opening except for the portion where a part is positioned in the arm member in a state where the fallboard is opened The keyboard instrument is characterized by comprising an interlocking mechanism section.

According to a second aspect of the present invention, there is provided a keyboard according to the first aspect, further comprising a biasing member that biases the interlocking member in a direction in which the blind member is detached from the opening. It is a musical instrument.

  According to the present invention, when the keyboard cover is opened, the slit-like opening exposed to the outside of the instrument main body can be blocked by the blindfold member except for a part of the arm member protruding outside the instrument main body. Therefore, it is possible to reliably prevent foreign matters such as dust from entering the instrument main body from the opening of the instrument main body, and to provide a product that is favorable in terms of appearance and design.

It is the perspective view which showed one Embodiment of the keyboard musical instrument to which this invention is applied. It is the expanded sectional view which showed the state which closed the keyboard cover in the AA arrow view of the keyboard musical instrument shown in FIG. FIG. 3 is an enlarged cross-sectional view showing a state in which the keyboard lid of the keyboard instrument shown in FIG. FIG. 4 is an enlarged cross-sectional view showing a state in which the keyboard lid is further opened and tilted slightly rearward of the instrument body in the keyboard instrument shown in FIG. 3. When the keyboard cover is erected almost perpendicularly to the rear side of the instrument body as viewed from the arrow B-B of the keyboard instrument shown in FIG. 4, the lid mounting arm portion of the arm member passes the side of the blindfold. It is the expanded sectional view of the principal part which showed the blindfold board and interlocking mechanism part in a state. In the keyboard instrument shown in FIG. 5, the blindfold and the interlocking mechanism in the state where the blindfold closed the slit-shaped opening when the keyboard lid is tilted slightly upward to the rear of the instrument body. It is an expanded sectional view of the principal part. FIG. 6 is an enlarged perspective view of a main part of the keyboard musical instrument shown in FIG. 5 in which the blindfold and the interlocking mechanism are disassembled. FIG. 4 is an enlarged perspective view of a main part showing a state in which the keyboard lid is opened in the keyboard instrument shown in FIG. FIG. 5 is an enlarged perspective view of a main part of the keyboard instrument shown in FIG. 4, showing a state in which the keyboard cover is further opened and tilted slightly backward from the instrument body. In the first modification of the keyboard instrument according to the embodiment of the present invention, when the keyboard lid is erected almost vertically to the rear side of the instrument body, the lid mounting arm portion of the arm member passes through the side of the blindfold. It is the expanded sectional view of the principal part which showed the blindfold board and interlocking mechanism part in a state. FIG. 10 shows the blindfold plate and the interlocking mechanism in a state where the blind cover closes the slit-shaped opening when the keyboard lid in the keyboard musical instrument shown in FIG. It is an expanded sectional view of the principal part. In the second modification of the keyboard instrument according to the embodiment of the present invention, when the keyboard lid is erected almost vertically to the rear side of the instrument body, the lid mounting arm portion of the arm member passes the side of the blindfold. It is the expanded sectional view of the principal part which showed the blindfold board and interlocking mechanism part in a state. In the keyboard instrument shown in FIG. 12, the blindfold and the interlocking mechanism in the state where the blindfold closed the slit-shaped opening when the keyboard lid is slightly tilted to the rear of the instrument main body to stand. It is an expanded sectional view of the principal part.

Hereinafter, an embodiment of a keyboard musical instrument to which the present invention is applied will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the keyboard instrument includes a musical instrument body 1. The instrument body 1 stands on a pair of side plates 2 that also serve as legs, a bottom plate 3 that is a shelf provided between the pair of side plates 2, and a front end portion (left end portion in FIG. 2) of the bottom plate 3. And the rear plate 5 provided upright at the rear end portion (right end portion in FIG. 2) of the bottom plate 3, the upper end portion of the rear plate 5 and the rear portions of the pair of side plates 2 (see FIG. 2 is provided with a top plate 6 disposed at the upper end of the right side).

  Thereby, as shown in FIGS. 1 to 4, the musical instrument main body 1 has a substantially box shape in which the upper surface located on the front side (left side in FIG. 2) of the top plate 6 is opened, and this substantially box-shaped portion is The structure is supported by a pair of side plates 2. Inside the instrument body 1, a keyboard portion 7 is provided in a state of being exposed from the upper surface located on the front side of the top plate 6. The keyboard unit 7 includes a keyboard chassis 8 disposed on the bottom plate 3 of the musical instrument main body 1 and a plurality of keys 9 arranged in parallel on the keyboard chassis 8 and rotating in the vertical direction. The plurality of keys 9 are composed of white keys and black keys, and each rear end portion is rotatably supported on the rear end upper portion of the keyboard chassis 8.

  Further, as shown in FIGS. 1 to 4, a keyboard lid 10 that covers the keyboard portion 7 is disposed at the upper portion of the instrument body 1 so as to be openable and closable while being supported by a pair of arm members 11. . As shown in FIG. 2, the keyboard cover 10 is formed in a flat plate shape that covers the upper side of the keyboard part 7 in the musical instrument main body 1 and the upper side of the top plate 6 and is arranged on the upper part of the musical instrument main body 1. The pair of arm members 11 are supported so as to be vertically rotatable by arm support shafts 12 provided at both side portions in the musical instrument main body 1, that is, rear portions (right side portions in FIG. 2) of the inner surfaces of the pair of side plates 2. Has been.

  The pair of arm members 11 are made of a metal plate such as stainless steel, and as shown in FIGS. 2 to 4, as shown in FIGS. 2 to 4, a substantially semicircular arm main body 11 a rotatably attached to the arm support shaft 12, and the arm main body 11 a. And a lid mounting arm portion 11 b that extends toward the keyboard lid 10 and is attached to the lower surface of the keyboard lid 10.

  In this case, as shown in FIGS. 1 and 8, the keyboard lid 10 is rotated in the vertical direction on the rear upper part (upper right part in FIG. 1) on both sides of the instrument body 1 while being supported by the arm member 11. When opening and closing the instrument body 1, a part of the lid mounting arm portion 11 b of the arm member 11, that is, a portion located in the vicinity of the keyboard lid 10, protrudes to the outside of the instrument body 1. A slit-like opening 13 is provided for movement between the two.

  That is, as shown in FIG. 1 and FIG. 8, the slit-shaped opening 13 is substantially in the middle in the vertical direction on each side of the top plate 6 of the musical instrument main body 1 and on both sides of the rear plate 5 of the musical instrument main body 1. Are provided continuously. The slit-like opening 13 has a length (width) in the lateral direction (substantially left-right direction in FIG. 1) orthogonal to the longitudinal direction (front-rear direction in FIG. 1) slightly larger than the thickness of the arm member 11. It is formed with a length.

  Thereby, as shown in FIG. 2, when the keyboard lid 10 is disposed on the upper part of the instrument body 1 and is closed, the arm member 11 is a part of the lid mounting arm portion 11b, that is, a slit-like opening. A portion of the lid mounting arm portion 11 b located in the position 13 is located in the slit-like opening 13 at a location located on the top plate 6, and is configured to support the keyboard lid 10 on the upper part of the instrument body 1. Yes.

  Further, as shown in FIG. 3, the arm member 11 has a lid mounting arm portion when the keyboard lid 10 stands and opens substantially perpendicularly to the rear side (right side portion in FIG. 3) of the instrument body 1. 11b, that is, the portion of the lid mounting arm portion 11b located in the slit-like opening 13 is located at the upper part of the slit-like opening 13 at the location located on the rear plate 5, and the keyboard lid 10 is The musical instrument main body 1 is configured to stand and be supported on the rear side (right side in FIG. 3).

  Further, as shown in FIGS. 1 and 4, the arm member 11 is in a state where the keyboard lid 10 stands up slightly inclined toward the rear (right side in FIG. 4) of the rear plate 5 of the instrument body 1, that is, the keyboard. When the lid 10 is in a fully opened state, a part of the lid mounting arm portion 11b, that is, a portion of the lid mounting arm portion 11b located in the slit-shaped opening 13 is a slit at a location where the rear plate 5 is located. The keyboard lid 10 is configured to be tilted and supported behind the instrument body 1 (right side in FIG. 4).

  By the way, on the lower surface of the top plate 6 of the musical instrument main body 1, as shown in FIGS. 5 to 7, there is a place where a part of the lid mounting arm portion 11 b of the arm member 11 protruding outside the musical instrument main body 1 is located. Except for the above, a blindfold plate 14 for slidably closing the slit-like opening 13 of the instrument body 1 is provided so as to be slidable. As shown in FIG. 7, the blind plate 14 is a substantially flat plate that is bent on one side and is bent so as to be parallel to the lower surface of the top plate 6 of the instrument body 1.

  As shown in FIG. 7, the blindfold plate 14 is slidably supported by a pair of guide portions 15 provided on the lower surface of the top plate 6 of the musical instrument main body 1. That is, as shown in FIG. 5 to FIG. 7, the blindfold plate 14 is a direction orthogonal to the rotation direction of the arm member 11 along the lower surface of the top plate 6 (left and right directions indicated by arrows X and Y in FIG. 5). That is, it is configured to slide in the lateral direction (left and right direction in FIG. 5) of the rear plate 5 perpendicular to the front-rear direction of the instrument body 1 (front and back direction in FIG. 5).

  In this case, as shown in FIG. 7, the pair of guide portions 15 are provided on the lower surface of the top plate 6 of the musical instrument main body 1 in a direction orthogonal to the opening / closing direction of the keyboard lid 10, that is, in the direction orthogonal to the rotation direction of the arm member 11. It is provided along the horizontal direction (arrow X, Y direction in FIG. 7) of the top plate 6 of the main body 1. Further, as shown in FIGS. 5 to 7, the blindfold 14 is configured to be interlocked with the opening / closing operation of the keyboard lid 10 by the interlocking mechanism portion 16.

  That is, as shown in FIGS. 5 to 9, the interlocking mechanism unit 16 interlocks the blindfold plate 14 with the opening / closing operation of the keyboard cover 10, so that the keyboard cover 10 is opened. 6 and FIG. 9, the blindfold 14 is moved to a position where the slit-like opening 13 is closed. As shown in FIGS. 5 to 7, the interlocking mechanism portion 16 includes a fixing member 17 fixed to the inner surface of the side plate 2 of the musical instrument main body 1 and an interlocking member 18 rotatably attached to the fixing member 17. I have.

  As shown in FIGS. 5 and 6, the fixing member 17 is located in the vicinity of the arm member 11 and is attached to the inner surface of the side plate 2 of the musical instrument main body 1 with screws 17 c in a state of approaching the rear plate 5. 17a and a rotation support shaft 17b provided on the fixed portion 17a. 7 to 9, the rotation support shaft 17b is perpendicular to the arm support shaft 12 that is the rotation center of the arm member 11, that is, the front-rear direction of the side plate 5 (in FIG. (Direction) and attached to the upper part of the fixing portion 17a.

  Further, as shown in FIGS. 6 and 7, the interlocking member 18 rotates around the rotation support shaft 17b of the fixing member 17 by the lid mounting arm portion 11b of the arm member 11 when the keyboard lid 10 is opened. The blindfold 14 is configured to move downward corresponding to the slit-shaped opening 13 of the instrument body 1. That is, the interlocking member 18 includes a main body portion 18a that is rotatably supported by the rotation support shaft 17b, a contact portion 18b that extends from the main body portion 18a to the lower portion of the slit-shaped opening 13, and a main body portion. The movable part 18c extended toward the lower surface of the top plate 6 from 18a is provided.

  In this case, as shown in FIGS. 5 and 6, the abutting portion 18b has a tip end portion (right end portion in FIG. 5) positioned below the slit-shaped opening 13, and the keyboard lid 10 stands up almost vertically. The lid mounting arm portion 11b of the arm member 11 abuts from above and is pushed down when the stationary member 17 is further rotated from the above state and is tilted slightly toward the rear of the musical instrument main body 1. The interlocking member 18 is configured to rotate clockwise in FIG. 5 around the rotation support shaft 17b.

  The movable portion 18c is configured such that the blindfold 14 is attached to the upper end thereof and the blindfold 14 is slid along with the rotation of the interlocking member 18. That is, as shown in FIGS. 5 to 7, the movable portion 18 c is inserted such that its upper end portion is movably moved vertically in the mounting hole 14 a provided in the blindfold plate 14. When rotating, the upper end portion moves up and down in the mounting hole 14a of the blindfold plate 14 with the rotation, and the blindfold plate 14 is slid in the contact / separation direction with respect to the slit-shaped opening 13 Has been.

  By the way, as shown in FIGS. 5 to 7, the interlocking mechanism portion 16 includes a biasing member 19 that biases the interlocking member 18 in a direction in which the blind plate 14 is detached from the slit-shaped opening 13. ing. The biasing member 19 is a coil spring and is disposed between the fixing member 17 of the interlocking mechanism portion 16 and the contact portion 18b of the interlocking member 18. In this state, the biasing member 19 is biased to push up the contact portion 18b. Accordingly, the blindfold plate 14 attached to the movable portion 18c of the interlocking member 18 is configured to be urged in a direction away from the slit-shaped opening 13.

  In this case, as shown in FIGS. 5 to 7, the interlocking mechanism portion 16 is urged so that the abutting portion 18 b of the interlocking member 18 is pushed up by the urging member 19, and the interlocking member 18 pushes the rotation support shaft 17 b. A stopper portion 20 is provided that restricts the rotational position of the movable portion 18c when rotated to the center. As shown in FIGS. 5 to 7, the stopper portion 20 is provided at the front upper portion (left upper portion in FIG. 5) of the fixing portion 17 a of the fixing member 17, and the blind plate 14 is detached from the slit-like opening portion 13. When moved to the above position, the back surface (left side surface in FIG. 5) of the movable portion 18c comes into contact.

Next, the operation of this keyboard instrument will be described.
When the keyboard lid 10 is placed on the upper portion of the instrument body 1 and closed, as shown in FIG. 2, a part of the lid mounting arm portion 11b of the arm member 11 that rotatably supports the keyboard lid 10 is It is located in the slit-like opening 13 at the position located on the plate 6 and protrudes from the upper part of the instrument body 1. The keyboard lid 10 is supported on the upper portion of the musical instrument main body 1 by the lid mounting arm portion 11 b of the protruding arm member 11.

  For this reason, the lid mounting arm portion 11b of the arm member 11 is positioned away from the rear plate 5 of the instrument body 1 to the front side (left side in FIG. 2). Accordingly, a part of the lid mounting arm portion 11b of the arm member 11, that is, the portion of the lid mounting arm portion 11b of the arm member 11 located in the slit-shaped opening 13 is, as shown in FIG. 16 is located on the upper side of the contact portion 18b of the connecting member 18 and is further away from the front side (left side in FIG. 2) of the instrument body 1 as shown in FIG.

  At this time, as shown in FIG. 5, the abutting portion 18 b of the connecting member 18 is urged upward by the urging member 19, so that the interlocking member 18 is centered on the rotation support shaft 17 b of the fixing member 17. In FIG. 5, it rotates counterclockwise, and the movable portion 18 c of the interlocking member 18 abuts against the stopper portion 20 of the fixing member 17 in a state where the blindfold 14 is detached from the slit-shaped opening 13. Has been.

  Thereby, as shown in FIG. 5 and FIG. 7, the blindfold plate 14 is moved to a pair of guide portions 15 provided on the lower surface of the top plate 6 of the instrument body 1 as the movable portion 18 c of the interlocking member 18 rotates. While being guided, it moves along the lower surface of the top plate 6 of the musical instrument body 1 toward the direction away from the slit-shaped opening 13, that is, the lateral direction of the top plate 6 orthogonal to the rotation direction of the arm member 11, The slit-shaped opening 13 is opened. In this state, the slit-shaped opening 13 is blocked by the keyboard lid 10 disposed on the upper part of the musical instrument main body 1, so that foreign matters such as dust can enter the musical instrument main body 1 from the slit-shaped opening 13. There is no invasion.

  Further, when the keyboard lid 10 is rotated and opened rearward from the upper part of the instrument body 1, the front end portion (left end portion in FIG. 2) of the keyboard lid 10 is lifted. Then, as shown in FIG. 3, the arm member 11 rotates clockwise in FIG. 3 around the arm support shaft 12 provided on the inner surface of the pair of side plates 2 of the musical instrument main body 1. Along with this, the keyboard cover 10 rotates and moves toward the rear of the instrument body 1 while gradually rising. At this time, a part of the lid mounting arm portion 11 b of the arm member 11 rotates and moves in the slit-shaped opening 13 toward the rear plate 5 of the instrument body 1.

  As shown in FIG. 3, when the keyboard lid 10 rotates and rises substantially perpendicularly to the rear portion of the instrument body 1, a part of the lid mounting arm portion 11 b of the arm member 11 passes through the slit-shaped opening 13. As shown in FIG. 5, the rotary body moves and moves from the position of the opening portion 13 located on the top plate 6 of the musical instrument body 1 to the position of the opening portion 13 located above the rear plate 5 of the musical instrument body 1. At this time, the lid mounting arm portion 11 b of the arm member 11 passes through the side of the blind plate 14 that opens the slit-shaped opening 13.

  At this time, as shown in FIG. 5, the lid mounting arm portion 11b of the arm member 11 approaches the contact portion 18b of the interlocking member 18 of the interlocking mechanism portion 16 from above, but in this state, the lid mounting arm portion 11b. Has not yet reached the contact portion 18b of the interlocking member 18. Thereafter, as shown in FIG. 4, when the keyboard lid 10 is further rotated and stood in a slightly inclined state toward the rear of the instrument body 1, and the keyboard lid 10 is completely opened, the lid attachment of the arm member 11 is performed. A part of the arm portion 11b rotates and moves in the slit-shaped opening 13 to push down the contact portion 18b of the interlocking member 18 of the interlocking mechanism portion 16 as shown in FIG.

  In other words, the lid mounting arm portion 11b of the arm member 11 is provided on the musical instrument main body 1 when the keyboard lid 10 stands up with a slight inclination toward the rear of the musical instrument main body 1, that is, immediately before the keyboard cover 10 is completely opened. It moves from the upper position of the slit-like opening 13 located at the upper part of the rear plate 5 to the lower position of the slit-like opening 13 located at the intermediate part of the rear plate 5.

  As a result, as shown in FIG. 6, the contact portion 18 b of the interlocking member 18 of the interlocking mechanism portion 16 is pushed down by the lid mounting arm portion 11 b of the arm member 11. Then, the interlocking member 18 rotates clockwise in FIG. 6 around the rotation support shaft 17 b of the fixing member 17 against the urging force of the urging member 19.

  For this reason, with the rotation of the interlocking member 18, the movable portion 18 c rotates in the clockwise direction, and the blindfold 14 is moved toward the slit-shaped opening 13. Thereby, as shown in FIGS. 6 and 9, the blindfold 14 is slit-shaped while being guided along the pair of guide portions 15 provided on the lower surface of the top plate 6 by the movable portion 18 c of the interlocking member 18. It moves toward the opening 13 and closes the slit-shaped opening 13.

  That is, the keyboard lid 10 is a short time from the state where the keyboard lid 10 is erected substantially vertically to the rear of the instrument body 1 to the state where it is slightly inclined toward the rear of the instrument body 1, that is, the lid mounting arm of the arm member 11. When the portion 11b moves from the upper position to the lower position of the slit-shaped opening 13 located on the rear plate 5 and the keyboard cover 10 is completely opened, the slit-shaped opening 13 is quickly closed.

  At this time, as shown in FIGS. 6 and 9, the lid mounting arm portion 11 b of the arm member 11 is separated from the slit-shaped opening 13 located on the top plate 6 of the musical instrument body 1. The hidden plate 14 does not come into contact with the lid mounting arm portion 11b. For this reason, the blindfold 14 moves smoothly and closes the slit-shaped opening 13 quickly when the keyboard cover 10 is fully opened. In this state, the blindfold 14 does not allow foreign matters such as dust to enter the instrument main body 1 from the slit-shaped opening 13.

  In this state, when the keyboard lid 10 is rotated toward the top of the musical instrument main body 1 and closed, the arm member 11 rotates about the arm support shaft 12 as shown in FIGS. The lid 10 rotates and moves from a state where the lid 10 is slightly inclined to the rear of the instrument body 1 to a state where the lid 10 stands substantially vertically. At this time, as shown in FIG. 5, the lid mounting arm portion 11 b of the arm member 11 is moved from the lower position of the slit-shaped opening 13 located in the middle portion of the rear plate 5 of the instrument body 1 to the upper portion of the rear plate 5. It moves to the upper position of the slit-like opening 13 located at the position.

  Therefore, the lid mounting arm portion 11b of the arm member 11 moves upward away from the contact portion 18b of the interlocking member 18, but the contact portion 18b is biased by the biasing member 19 as shown in FIG. 6, the interlocking member 18 rotates counterclockwise in FIG. 6 around the rotation support shaft 17b of the fixing member 17 as the lid mounting arm portion 11b of the arm member 11 moves upward. .

  As a result, the blind plate 14 is moved in a direction (in the direction of arrow Y shown in FIG. 5) to be separated from the slit-shaped opening 13 by the movable portion 18c of the interlocking member 18, and the slit-shaped opening 13 is quickly moved. Open. At this time, the keyboard cover 10 is quickly raised in a short time from a state where the keyboard lid 10 stands up slightly toward the rear of the instrument body 1 and is completely open to a state where it stands up almost perpendicularly to the rear part of the instrument body 1. The blindfold 14 is moved to open the slit-shaped opening 13.

  That is, as shown in FIG. 6, the lower end portion of the lid attachment arm portion 11b of the arm member 11 is separated upward from the contact portion 18b of the interlocking member 18, and the upper end portion of the lid attachment arm portion 11b is the blindfold plate 14. The blindfold 14 is quickly moved away from the slit-shaped opening 13 to open the slit-shaped opening 13 in a short time before reaching the lower surface of the slit.

  Thereafter, when the keyboard cover 10 is further rotated in the closing direction, even if the arm member 11 rotates counterclockwise around the arm support shaft 12, as shown in FIGS. Since the blindfold 14 is detached from the opening 13 and the slit-shaped opening 13 is opened, the slit-shaped opening is not obstructed by the lid mounting arm portion 11 b of the arm member 11. Move in the section 13. As a result, the keyboard lid 10 is disposed on the musical instrument main body 1 while being supported by the arm member 11, and covers and closes the keyboard portion 7.

  As described above, according to this keyboard instrument, the keyboard lid 10 covering the keyboard section 7 in the instrument body 1 is supported by the arm member 11 rotatably attached to the instrument body 1 so that the keyboard lid 10 can be opened and closed. When opening and closing, a part of the lid mounting arm portion 11b of the arm member 11 is moved in a state of protruding from the slit-shaped opening 13 provided in the musical instrument main body 1 to the outside of the musical instrument main body 1, and the keyboard lid 10 is opened. In this state, the interlocking mechanism 16 moves the blindfold 14 to a position where the slit-shaped opening 13 is blocked to close the slit-shaped opening 13, so that the slit-shaped opening 13 of the instrument body 1 is closed. A foreign object such as dust can be prevented from entering the musical instrument main body 1, and a product that is favorable in terms of appearance and design can be provided.

  That is, according to this keyboard instrument, when the keyboard lid 10 supported by the arm member 11 is rotated and opened, the interlocking mechanism 16 automatically moves the blind cover 14 along with the rotational movement of the keyboard lid 10. When the slit-shaped opening 13 provided in the musical instrument main body 1 is closed by moving the blindfold plate 14, except for the part where the lid mounting arm portion 11 b of the arm member 11 is located, the slit-shaped opening 13 is provided. The opening 13 can be reliably and satisfactorily closed by the blindfold 14. For this reason, it is possible to reliably prevent foreign matters such as dust from entering the musical instrument main body 1 from the slit-shaped opening 13 of the musical instrument main body 1, and to provide a design that is preferable in terms of appearance. it can.

  In this case, the interlocking mechanism unit 16 includes a fixing member 17 provided in the musical instrument main body 1 and an interlocking member 18 rotatably attached to the fixing member 17 and having a blindfold 14 attached to the upper end portion. The interlocking member 18 is rotated about the rotation support shaft 17b of the fixing member 17 by the lid mounting arm portion 11b of the arm member 11 when the keyboard lid 10 is opened, and the blindfold plate 14 is formed in a slit shape of the musical instrument main body 1. When the keyboard lid 10 is opened, the interlocking member 18 can be rotated by the lid mounting arm portion 11 b of the arm member 11. Accordingly, the blindfold 14 can be automatically moved to reliably close the slit-shaped opening 13 except for the portion where the part of the lid mounting arm 11b of the arm member 11 is located. Can provide good things.

  In addition, the interlocking mechanism 16 includes a biasing member 19 that biases the interlocking member 18 in a direction in which the blindfold 14 is detached from the slit-shaped opening 13, so that the keyboard lid 10 is closed. When the lid mounting arm portion 11b of the arm member 11 is separated from the interlocking member 18, the interlocking member 18 can be automatically rotated by the urging force of the urging member 19, whereby the blind plate 14 is slit-shaped. It can be made to detach | leave from the opening part 13 of this, and the slit-shaped opening part 13 can be open | released.

  For this reason, when the keyboard lid 10 is closed, the blind cover 14 is quickly detached from the slit-shaped opening 13, so that even if the arm member 11 rotates together with the keyboard lid 10, the lid mounting arm of this arm member 11 The portion 11b does not come into contact with the blindfold 14 and can be favorably rotated in the direction in which the keyboard lid 10 is closed. Also by this, what can be used conveniently can be provided, and the keyboard lid 10 can be disposed on the upper part of the musical instrument main body 1 and can be closed well.

  In the keyboard musical instrument according to the embodiment described above, the coil spring as the biasing member 19 is disposed between the contact portion 18b of the interlocking member 18 and the fixing portion 17a of the fixing member 17, so that the interlocking member 18 is blinded. Although the case where the plate 14 is configured to be urged toward the direction in which the plate 14 is separated from the slit-shaped opening 13 has been described, the present invention is not limited to this. For example, as in the first modification shown in FIGS. 10 and 11, The structure which provided the urging member 21 may be sufficient.

  That is, the biasing member 21 is a tension coil spring, one end of which is attached to the back surface (left side in FIG. 10) of the movable portion 18c of the interlocking member 18, and the other end is the instrument body 1 or the interlocking mechanism portion. In this state, the interlocking member 18 may be urged toward the direction in which the blindfold plate 14 is detached from the slit-shaped opening 13. Even when such an urging member 21 is used, the same effects as those of the above-described embodiment can be obtained.

  Further, in the keyboard musical instrument of the above-described embodiment, the case where the blindfold plate 14 is slidably arranged below the top plate 6 of the musical instrument main body 1 has been described. As shown in the second modified example, the blindfold plate 22 may be slidably disposed on the top surface of the top plate 6.

  That is, as shown in FIG. 12 and FIG. 13, the interlocking mechanism portion 16 rotatably attaches the connecting piece 23 to the upper end portion of the movable portion 18 c of the interlocking member 18, and attaches the connecting piece 23 to the lower surface of the blind plate 22. And the connecting piece 23 may be inserted into the slit hole 24 formed in the top plate 6 of the musical instrument main body 1. In this case, the slit hole 24 may be formed in a direction orthogonal to the slit-shaped opening 13 and the length thereof may be half or less of the length along the slit direction of the blindfold 22. .

  According to such a keyboard instrument, in addition to the same effects as the above-described embodiment, the slit hole 24 can always be closed by the blindfold plate 22 even when the blindfold plate 22 slides. Even if the slit hole 24 is provided in the plate 6, it is possible to prevent foreign matters such as dust from entering the instrument body 1 from the slit hole 24, and to provide a preferable one in terms of appearance and design. Can do.

DESCRIPTION OF SYMBOLS 1 Musical instrument main body 2 A pair of side plate 3 Bottom plate 4 Front plate 5 Rear plate 6 Top plate 7 Keyboard part 10 Keyboard lid 11 Arm member 11a Arm main body 11b Cover attachment arm part 12 Arm support shaft 13 Slit-like opening parts 14 and 22 Plate 15 A pair of guide parts 16 Interlocking mechanism part 17 Fixed member 17b Rotation support shaft 18 Interlocking member 18a Main body part 18b Abutting part 18c Movable part 19, 21 Energizing member 20 Stopper part

Claims (2)

A keyboard lid that covers a keyboard provided in the instrument body is supported by an arm member that is rotatably mounted in the instrument body, and a part of the arm member is opened when the keyboard lid is opened and closed. In a keyboard instrument in which a slit-like opening for moving the instrument in a state protruding from the instrument body extends from the upper part to the rear part of the instrument body,
A blindfold member that covers the opening so as to be openable and closable, except where the part of the arm member that protrudes outside the instrument body is located;
A fixing member provided in the instrument body; and an interlocking member rotatably attached to the fixing member and having the blind member attached to one end thereof. The interlocking member opens the keyboard lid. When the keyboard cover is opened, the part of the arm member is positioned when the arm member is rotated around the fixing member to move the blind member toward the opening. A keyboard instrument comprising: an interlocking mechanism that moves the blindfold to a position that closes the opening except for a portion to be performed. The keyboard instrument according to claim 1 , further comprising a biasing member that biases the interlocking member in a direction in which the blind member is detached from the opening.

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