JP2018180070A - Electronic instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic instrument in which workability in mounting of a plate-like member is improved.SOLUTION: An electronic instrument includes: a plate-like member; a first fixed part, on a first end side of a main surface of the plate-like member, which is provided on a first surface side of the main surface of the plate-like member and limits the movement of the plate-like member to the first surface side; a movable second fixed part, on a second end side of the main surface that is on the opposite side of the first end side, which is provided on the first surface side and limits the movement of the plate-like member to the first surface side; a third fixed part, between the first fixed part and the second fixed part, which is provided on a second surface side on the opposite side of the first surface side and limits the movement of the plate-like member to the second surface side; a limitation part for limiting the movement of the plate-like member to a spreading direction of the main surface; and a guide, in the first end side, which is provided on the second surface side of the plate-like member and has an inclined surface inclining toward the first fixed part.SELECTED DRAWING: Figure 9

Description

  The present invention relates to an electronic device.

  In general, the electronic musical instrument is provided with an operator device (for example, a key for specifying a sound pitch to be sounded, a push button for selecting a timbre, etc.) to be pressed. The key switch includes a rubber switch and a switch substrate disposed below the rubber switch. Further, the rubber switch is provided for each key and has movable contacts. Further, a sensor is provided on the switch substrate for each key. When the rubber switch is pressed by the hammer in response to the key pressing operation of the key, the movable contact contacts the sensor of the switch board. Thereby, the operation of the key is detected, and a signal corresponding to the detected content is output.

  For example, Patent Document 1 discloses a hammer support (hereinafter referred to as a hammer switch) to which a key switch having a hammer support portion supporting a plurality of hammers rotated in response to a key depression operation and a plurality of switches pressed by the rotary hammers is attached. A keyboard device having a frame) is also disclosed. The frame is an injection-molded product made of synthetic resin, and the switch substrate of the key switch is engaged in a inserted state between the substrate anchoring portion of the frame and the rectangular wall.

JP, 2013-145275, A

  As a method of fixing the switch substrate other than the above configuration, for example, there is also a method of fixing the switch substrate or the like to the frame while rotating a plate-like member. However, when the switch substrate is rotated, the switch substrate can not be rotated depending on the place to which the end of the switch substrate is attached, and the workability of the mounting operation of the switch substrate may be reduced.

  In view of the above problems, an object of the present invention is to provide an electronic device in which the workability of attaching work of a plate-like member is improved.

  The electronic device according to an embodiment of the present invention is provided on the plate-like member and the first end side of the main surface of the plate-like member on the first surface side of the main surface of the plate-like member. The first fixing portion for restricting the movement of the member to the first surface side, and the second end side of the main surface opposite to the first end side are provided on the first surface side, and It is provided on the second surface side opposite to the first surface side between the movable second fixing portion and the first fixing portion and the second fixing portion, which restricts the movement to the first surface side. A third fixing portion for restricting the movement of the plate member to the second surface side, a restricting portion for restricting the movement of the plate member in the spreading direction of the main surface, and the plate shape at the first end portion side And a guide provided on the second surface side of the member and having an inclined surface inclined toward the first fixing portion.

  In the above configuration, the third fixing portion includes the support member and an elastic member softer than the support member, and the elastic member restricts the movement of the plate-like member to the second surface side.

  In the above configuration, the second fixing portion has a locking portion and a flexible portion, and the locking portion is locked to the plate-like member to restrict movement of the plate-like member to the first surface side. The flexible portion is flexible, and the locking portion moves in the spreading direction of the main surface, so that the plate-like member can be moved to the first surface side.

  An electronic device according to an embodiment of the present invention includes a plate-like member, and a first fixing portion in contact with the first surface of the main surface of the plate-like member on the first end side of the main surface of the plate-like member And, on the second end side of the main surface opposite to the first end side, in contact with the first surface and between the movable second fixing portion, and the first fixing portion and the second fixing portion, A third fixing portion in contact with the second surface opposite to the first surface side, a first member provided on an extension plane of the main surface at the first end side, and a main member at the second end side A second member provided on an extended plane of the surface, and a guide provided on the second surface side of the plate-like member on the first end side and having an inclined surface inclined toward the first fixed portion; And the distance between the first fixing portion and the second member in the first direction is smaller than the width of the plate-like member in the first direction.

  An electronic device according to an embodiment of the present invention includes a plate-like member, and a first fixing portion in contact with the first surface of the main surface of the plate-like member on the first end side of the main surface of the plate-like member And, on the second end side of the main surface opposite to the first end side, in contact with the first surface and between the movable second fixing portion, and the first fixing portion and the second fixing portion, A third fixed portion in contact with the second surface opposite to the first surface side, and an inclined surface provided on the second surface side of the plate-like member at the first end side and inclined toward the first fixed portion The plate-like member is provided with a hole on the second surface side, and the protrusion enters into the hole of the plate-like member, and the first fixing in the first direction is performed. The distance between the portion and the protrusion is smaller than the distance between the first end of the second surface and the hole in the first direction.

  In the above configuration, the third fixing portion includes the support member and an elastic member softer than the support member, and the elastic member is in contact with the second surface.

  In the above configuration, the second fixing portion has the locking portion and the flexible portion, the locking portion contacts the first surface, and the flexible portion is flexible, whereby the locking portion is the first surface. Move out of the

  In the above configuration, the second fixed portion has the locking portion and the flexible portion, the locking portion is in contact with the first surface, the flexible portion is connected to the second member, and the flexible portion is flexible. By bending, the locking portion moves out of the first surface.

  In the above configuration, the first member is provided between the first end and the second end in the first direction.

  In the above configuration, the distance between the first fixing portion and the second member in the first direction is smaller than the width of the plate-like member between the first member and the second member in the first direction.

  In the above configuration, the plate-like member is a circuit board.

  According to the present invention, it is possible to provide an electronic device in which the workability of attaching work of the plate-like member is improved.

It is a figure which shows the structure of the electronic device in one Embodiment of this invention. It is a block diagram showing composition of a sound source device in one embodiment of the present invention. It is explanatory drawing at the time of seeing the structure inside the housing | casing in one Embodiment of this invention from a side. FIG. 6 is an explanatory view of the keyboard assembly in an embodiment of the present invention as viewed from above. It is a perspective view explaining the detailed structure of the frame in one embodiment of the present invention. It is explanatory drawing at the time of seeing the flame | frame in one Embodiment of this invention from a lower surface. The figure which expanded a part of flame | frame in one Embodiment of this invention. It is a perspective view explaining the detailed structure of the frame in one embodiment of the present invention. FIG. 8 is a cross-sectional view when cut along a dashed-dotted line A1-A2 in FIG. 7; FIG. 8 is a cross-sectional view when cut along a dashed-dotted line B1-B2 in FIG. 7; FIG. 8 is a cross-sectional view when cut along a dashed-dotted line A1-A2 in FIG. 7; FIG. 8 is a cross-sectional view when cut along a dashed-dotted line B1-B2 in FIG. 7; FIG. 8 is a cross-sectional view when cut along a dashed-dotted line A1-A2 in FIG. 7; FIG. 8 is a cross-sectional view when cut along a dashed-dotted line B1-B2 in FIG. 7; FIG. 8 is a cross-sectional view when cut along a dashed-dotted line A1-A2 in FIG. 7; FIG. 8 is a cross-sectional view when cut along a dashed-dotted line B1-B2 in FIG. 7; FIG. 8 is a cross-sectional view when cut along a dashed-dotted line A1-A2 in FIG. 7; FIG. 8 is a cross-sectional view when cut along a dashed-dotted line B1-B2 in FIG. 7; FIG. 8 is a cross-sectional view when cut along a dashed-dotted line B1-B2 in FIG. 7; FIG. 8 is a cross-sectional view when cut along a dashed-dotted line B1-B2 in FIG. 7; FIG. 8 is a cross-sectional view when cut along a dashed-dotted line B1-B2 in FIG. 7; FIG. 8 is a cross-sectional view when cut along a dashed-dotted line A1-A2 in FIG. 7;

  Hereinafter, an electronic device according to an embodiment of the present invention will be described in detail with reference to the drawings. The embodiment shown below is an example of the embodiment of the present invention, and the present invention is not interpreted as being limited to these embodiments. In the drawings referred to in this embodiment, the same portions or portions having similar functions are denoted by the same reference numerals or similar reference numerals (reference numerals with A, B, etc. appended after numbers), and the repetition thereof The description of may be omitted. In addition, dimensional ratios (ratios between components, ratios in the vertical and horizontal directions, etc.) of the drawings may be different from actual ratios for convenience of explanation, or parts of the configurations may be omitted from the drawings.

First Embodiment
[Configuration of electronic device]
FIG. 1 is a diagram showing the configuration of an electronic device according to an embodiment of the present invention. In this example, the electronic device 1 is an electronic keyboard instrument such as an electronic piano which is produced in response to a key depression of a user (performer). The electronic device 1 may be a keyboard-type controller that outputs control data (for example, MIDI) for controlling an external sound source device according to a key depression. In this case, the electronic device 1 may not have the sound source device.

  The electronic device 1 comprises a keyboard assembly 10. The keyboard assembly 10 includes a white key 100 w and a black key 100 b. In the keyboard assembly 10, a plurality of white keys 100w and black keys 100b are arranged side by side. The number of keys 100 is N, which is 88 in this example. The direction in which the plurality of white keys 100 w and black keys 100 b are arranged is referred to as a scale direction. When the white key 100 w and the black key 100 b can be described without particular distinction, they may be referred to as the key 100. Also in the following description, when “w” is attached to the end of the code, it means that the configuration corresponds to the white key. Further, when “b” is added at the end of the code, it means that the configuration corresponds to the black key.

  A portion of the keyboard assembly 10 resides inside the housing 90. In other words, the housing 90 covers a part of the white key 100 w and the black key 100 b. When the electronic device 1 is viewed from above, a portion of the keyboard assembly 10 covered by the housing 90 is referred to as a non-appearance part NV, and a part exposed from the housing 90 and visible to the user is referred to as an appearance part PV. . That is, the appearance part PV is a part of the key 100 and indicates an area where the user can perform a play operation. Hereinafter, a portion of the key 100 exposed by the appearance portion PV may be referred to as a key main body.

  A sound source device 70 and a speaker 80 are disposed in the housing 90. The sound source device 70 generates a sound waveform signal in response to the depression of the key 100. The speaker 80 outputs the sound wave form signal generated in the sound source device 70 to the external space. The electronic device 1 may be provided with a slider for controlling the volume, a switch for switching the timbre, a display for displaying various information, and the like.

  In the description of the present specification, the directions such as up, down, left, right, near and far indicate the directions when the electronic device 1 is viewed from the player when playing. Therefore, it can be expressed, for example, that the non-appearance portion NV is located on the back side with respect to the appearance portion PV. Also, the direction may be indicated based on the key 100, such as the front end of the key (front of the key) and the rear of the key (rear of the key). In this case, the key front end side indicates the front side of the key 100 as viewed from the player. The rear end side of the key indicates the back side of the key 100 as viewed from the player. According to this definition, it can be expressed that the portion from the front end to the rear end of the key body portion of the black key 100b in the black key 100b is a portion projecting upward beyond the white key 100w.

  FIG. 2 is a block diagram showing the configuration of a sound source device according to an embodiment of the present invention. The sound source device 70 includes a signal conversion unit 710, a sound source unit 730, and an output unit 750. A sensor 300 is provided corresponding to each key 100, detects an operation of the key, and outputs a signal according to the detected content. In this example, the sensor 300 outputs a signal according to the three-step key depression amount. The key pressing speed can be detected in accordance with the interval of this signal.

  The signal conversion unit 710 obtains an output signal of the sensor 300 (the sensors 300-1, 300-2, ..., 300-88 corresponding to the key 100 of 88), and the operation according to the operation state of each key 100 Generate and output a signal. In this example, the operation signal is a signal of MIDI format. Therefore, the signal conversion unit 710 outputs note-on in response to the key depression operation. At this time, the key number indicating which of the 88 keys 100 has been operated, and the velocity corresponding to the key depression speed are also output in association with the note-on. On the other hand, in response to the key release operation, the signal conversion unit 710 associates and outputs the key number and the note off. A signal corresponding to another operation such as a pedal may be input to the signal conversion unit 710, and may be reflected in the operation signal.

  The sound source unit 730 generates a sound waveform signal based on the operation signal output from the signal conversion unit 710. The output unit 750 outputs the sound waveform signal generated by the sound source unit 730. The sound wave type signal is output to, for example, the speaker 80 or a sound wave type signal output terminal.

[Configuration of keyboard assembly]
FIG. 3 is an explanatory view of the configuration inside the housing in the embodiment of the present invention as viewed from the side. In the following description, the white key 100a will be described, but for convenience of description, it will be simply referred to as the key 100. As shown in FIG. 3, the keyboard assembly 10 and the speaker 80 are disposed inside the housing 90. The speaker 80 is disposed at the back of the keyboard assembly 10. The speaker 80 is arranged to output a sound corresponding to the key depression toward the upper and lower sides of the housing 90. The sound outputted downward travels from the lower surface side of the housing 90 to the outside. On the other hand, the sound outputted upward passes from the inside of the housing 90 through the space inside the keyboard assembly 10, and from the gap between the adjacent parts of the key 100 in the appearance part PV or the gap between the key 100 and the housing 90 Go to

  The configuration of the keyboard assembly 10 will be described with reference to FIG. The keyboard assembly 10 includes a connecting portion 180, a hammer assembly 200 and a frame 500 in addition to the key 100 described above. The frame 500 is a molded injection product made of synthetic resin. In addition, the frame 500 is fixed to the housing 90 by the support portion 572 and the plurality of bosses 570. The connection unit 180 rotatably connects the key 100 to the frame 500. The connection portion 180 includes a plate-like flexible member 181, a key side support portion 183 and a rod-like flexible member 185. The plate-like flexible member 181 extends from the rear end of the key 100. The key side support portion 183 extends from the rear end of the plate-like flexible member 181. The rod-like flexible member 185 connects the key side support portion 183 and the frame side support portion 585 of the frame 500. That is, between the key 100 and the frame 500, a rod-like flexible member 185 is disposed. By bending the rod-like flexible member 185, the key 100 can be rotated relative to the frame 500. The rod-like flexible member 185 is configured to be removable from the key side support portion 183 and the frame side support portion 585. The keyboard assembly 10 is a resin-made structure, most of which are manufactured by injection molding or the like. Note that the rod-like flexible member 185 may be configured so as not to be removable by being integrated with the key side support portion 183 and the frame side support portion 585 or by bonding or the like.

  The key 100 includes a front end key guide 151 and a side key guide 153. The front end key guide 151 is slidably in contact with the front end key frame guide 511 in a covering state. In other words, the front end key guide 151 is in contact with the front end key frame guide 511 on both sides of the upper and lower scale directions.

  The side key guides 153 slidably contact the side frame guides 513 on both sides in the scale direction. In this example, the side surface key guide 153 is disposed in a region corresponding to the non-appearance portion non-appearance portion NV in the side surface of the key 100, and is present on the key front end side with respect to the connection portion 180 (plate-like flexible member 181). However, it may be disposed in the area corresponding to the appearance part PV.

  Hammer assembly 200 is pivotally attached to frame 500. At this time, the shaft support portion 220 of the hammer assembly 200 and the pivot shaft 520 of the frame 500 slidably contact at at least three points. The front end portion 210 of the hammer assembly 200 is slidably in contact with the internal space of the hammer support portion 120 in the generally longitudinal direction. The sliding portion, that is, the portion where the front end portion 210 and the hammer support portion 120 are in contact with each other is located below the key 100 in the appearance portion PV (the key front end side of the rear end of the key body).

  The hammer assembly 200 is provided with a metal weight portion 230 at the back side of the rotation axis. In a normal state (when the key is not depressed), the weight portion 230 is placed on the lower stopper 410, and the front end portion 210 of the hammer assembly 200 pushes back the key 100. When the key is depressed, the weight portion 230 moves upward and collides with the upper stopper 430. The hammer assembly 200 applies a weight to the key depression by the weight portion 230. The lower stopper 410 and the upper stopper 430 are formed of a buffer material or the like (non-woven fabric, elastic body or the like).

  The frame 500 is provided with a circuit board 400 which is a plate-like member. The circuit board 400 is provided so as to be parallel to the mounting surface of the housing 90 in a sectional view. The circuit board 400 is provided with a sensor 300 corresponding to the key 100. Further, a rubber switch 211 is provided on the circuit board 400. A dome-shaped bulging portion of the rubber switch 211 is provided corresponding to each key 100. A movable contact is provided inside the bulging portion. The movable contacts are spaced apart to be able to contact or leave the sensor 300 of the circuit board 400. When the bulging portion is pressed by the hammer assembly 200 in accordance with the key depression operation of the key 100, the bulging portion is elastically deformed and the movable contact contacts the sensor 300 of the circuit board 400. As a result, note-on is output from the signal conversion unit 710 shown in FIG.

  In the following description, the circuit board 400 is described as an example of the plate-like member, but the present invention is not limited to this. For example, in the case of a member having no contact in the rubber switch and causing only reaction force generation, it also includes a plate-like member used to support the member. The plate-like member may be a part of the frame or another member. The plate-like member may be a synthetic resin or metal.

  As shown in FIG. 3, the bottom of the wall 552 and the bottom of the boss 570 are provided at a position lower than the height of the circuit board 400, and the bottom of the boss 570 is lower than the bottom of the wall 552. It is provided in the position. Therefore, in front of the key 100, a space can be formed by the housing 90 and the frame 500.

  FIG. 4 is an explanatory view of the keyboard assembly according to the embodiment of the present invention as viewed from above. As shown in FIG. 4, the key side support portion 183b of the black key 100b is disposed closer to the key rear end side than the key side support portion 183w of the white key 100w. This position is related to the position of the rod-like flexible members 185 w and 185 b which is the rotation center of the key 100. This arrangement reproduces the difference between the rotation centers of the white and black keys of the acoustic piano. In this example, the plate-like flexible member 181 b corresponding to the black key 100 b is longer than the plate-like flexible member 181 w corresponding to the white key 100 w.

  In FIG. 4, the configurations of the hammer assembly 200 and the frame 500 located below the key 100 are partially omitted. Specifically, the configuration of the frame 500 in the vicinity of the connection portion 180 (frame side support 585, etc.) is described, and the description of a part of the configuration on the front side is omitted. In the other descriptions, part of the description may be omitted at the time of illustration.

Frame structure
FIG. 5 is a perspective view for explaining the detailed structure of the frame in the embodiment of the present invention. FIG. 5 is a perspective view of the front of the frame 500 as viewed from the upper left. The frame 500 includes a rib 540, a wall 542, a support 544, a rib 550, a rib 551, a wall 552, a rib 553, and a wall 554. The rib and the wall are both plate members. Also, the rib extends in a first direction, and the wall extends in a second direction intersecting the first direction. The rib is, for example, a plate-like member extending in a direction parallel to the longitudinal direction of the key 100, and the wall portion is a plate-like member extending in a direction orthogonal to the longitudinal direction of the key 100.

  Ribs 540 are provided between adjacently disposed hammer assemblies 200. In other words, the hammer assembly 200 is disposed in the space separated by the ribs 540. The plurality of ribs 540 are connected by the support 544 and the wall 542. The wall 552 is a plate-like member extending in a direction parallel to the wall 542. The wall 552 is provided at a position facing the wall 542. The wall 552 and the wall 542 are connected by the rib 550 and the rib 551. In addition, the wall 552 is connected to the wall 554. In the present specification and the like, although an example in which the rib 565 and the rib 566 extend in the first direction is shown, the present invention is not limited thereto. The rib 565 and the rib 566 may extend in parallel or may not extend in parallel.

  FIG. 6 is a view for explaining the detailed structure of the frame in the embodiment of the present invention. FIG. 6 is a plan view of the frame 500 viewed from below. The frame 500 further includes ribs 565, ribs 566, positioning projections 561, bosses 570, and bosses 571.

  The frame 500 is provided with a circuit board 400, and the circuit board 400 is provided with recessed portions 567 for left and right positioning. Further, the positioning convex portion 561 provided on the wall portion 552 has a function of positioning the circuit board 400 with respect to the left and right. Specifically, the circuit board 400 can be positioned with respect to the left and right by inserting the concave portion provided in the circuit board 400 into the positioning convex portion 561.

  Ribs 565 are provided between adjacent hammer assemblies and ribs 566 are provided between adjacent hammer assemblies. Further, the rib 565 and the rib 566 are connected by the wall portion 542. In addition, the rib 565 is disposed on the extension of the rib 553, and the rib 566 is disposed on the extension of the rib 550. The wall portion 542 connects the rib 565 and the rib 566.

  Next, FIG. 7 shows an enlarged view of a portion 510 of the frame 500 shown in FIG. The frame 500 has a fixed portion 557, a flexible portion 558, and a locking portion 559. Further, the frame 500 has a holding portion 555 and a holding portion 556. The holding portion 555 is provided on the wall portion 542, and the holding portion 556 is provided on the wall portion 552. Further, the holding portion 556 is provided with a guide 573. Further, a flexible portion 558 is provided on the wall portion 542, and a locking portion 559 is connected to the flexible portion 558. Further, the fixing portion 557 is provided on the wall portion 552. The circuit board 400 is fixed by the holding portion 555 and the holding portion 556 in the front-rear direction of the frame 500. In addition, the fixing portion 557 and the locking portion 559 restrict the downward movement of the circuit board 400.

  In FIG. 7, although the flexible part 558 is shown about the example provided in the wall part 542, this invention is not limited to this. The member provided with the flexible portion 558 may not be wall-shaped. For example, the flexible portion 558 may provide the rib 540 with the flexible portion 558.

  Moreover, although the fixing | fixed part 557 is shown about the example provided in the wall part 552 in FIG. 7, this invention is not limited to this. The member on which the fixing portion 557 is provided may not be wall-shaped. For example, the fixing portion 557 can be provided on the member 576 shown in FIG.

  Although the embodiment according to the present invention shows an example in which the guide 573 is provided in the holding portion 556, the present invention is not limited to this. For example, the wall portion 552 may be provided with a guide 573. Further, the guide 573 may be provided on the rib 550, the rib 551, or the like.

  A boss 570 and a holding portion 555 are provided on the extension of the rib 565. In addition, the holding portion 556 is disposed on the extension of the rib 565 and at a position facing the holding portion 555. Although FIG. 7 shows the case where the holding portion 556 faces the holding portion 555 on the extension of the rib 565, the present invention is not limited to this. At least one of the holding portion 555 and the holding portion 556 may be disposed on the extension of the rib 565. Since at least one of the holding portion 555 and the holding portion 556 is disposed on the extension of the rib 565, the positioning accuracy of the circuit board 400 in the front-rear direction is improved.

  In addition, the flexible portion 558 is disposed at a position not overlapping on the extension of the rib 565. The fixing portion 557 is arranged at a position not overlapping the extension of the rib 565.

  FIG. 8 shows a perspective view of the frame 500 as viewed from the lower left. The frame 500 has a plurality of paired holding parts. In FIG. 8, the holding portion 555 and the holding portion 556 are paired, and the holding portion 562 and the holding portion 563 are paired. Thus, the positioning accuracy with respect to the front-rear direction of the circuit board 400 is improved by providing the pair of holding parts on the frame 500 at a constant interval.

  FIG. 9 shows a cross-sectional view taken along a dashed-dotted line A1-A2 in FIG. In FIG. 9, the keyboard assembly 10 is disposed above. In FIG. 9, the A1 side is the front side of the keyboard assembly 10, and the A2 side is the rear side of the keyboard assembly 10. FIG. 10 is a cross-sectional view taken along the alternate long and short dash line B1-B2 in FIG. In FIG. 10, the keyboard assembly 10 is disposed above. In FIG. 10, the B1 side is the front side of the keyboard assembly 10, and the B2 side is the rear side of the keyboard assembly 10.

  As shown in FIGS. 9 and 10, the first fixing portion (the fixing portion 557) is provided on the first surface 581 side of the main surface of the circuit board 400 on the end 568 side of the main surface of the circuit board 400. By contacting the circuit board 400 with the circuit board 400 from the lower side (the first surface 581 side) of the circuit board 400, the movement of the circuit board 400 to the first surface 581 side is restricted. In addition, the second fixing portion (the locking portion 559 and the flexible portion 558) is provided on the first surface 581 side at the end portion 569 side of the main surface on the opposite side to the end portion 568 side. By contacting the circuit board 400 from the first surface 581 side, the movement of the circuit board 400 to the first surface 581 side is restricted. In addition, the third fixing portion (the bulging portion 222, the rubber sheet 223) is provided on the second surface 582 opposite to the first surface 581 between the first fixing portion and the second fixing portion. By contacting the circuit board 400 with the circuit board 400 from the second surface 582 side of the circuit board 400, the movement of the circuit board 400 to the second surface 582 side is restricted. The restricting portion (for example, a first member and a second member described later) has a function of restricting the movement of the circuit board 400 in the spreading direction of the main surface of the circuit board 400. In the present specification and the like, the main surface refers to the first surface 581 and the second surface 582 of the circuit board 400.

  The locking portion 559 locks the circuit board 400 to restrict movement of the circuit board 400 to the first surface 581 side. In addition, the flexible portion 558 is flexible, and the locking portion 559 moves in the spreading direction of the main surface, so that the circuit board 400 can be moved to the first surface 581 side. In addition, the flexible portion 558 is connected to the restricting portion (wall portion 542). Although the second fixing portion is described as the locking portion 559 and the flexible portion 558, the second fixing portion may be screwed.

  In the present embodiment, the case where the wall portion 542, the flexible portion 558, and the locking portion 559 are integrally formed as the frame 500 will be described, but the present invention is not limited thereto. The flexible portion 558 and the locking portion 559 may be formed of different materials and bonded to the wall 542.

  Further, the third fixing portion has a support member (rib 550) and an elastic member (rubber switch 211) softer than the support member, and the elastic member restricts the movement to the circuit board 400.

  In addition, the guide 573 is provided on the second surface 582 of the circuit board 400 at the end 568 side, and has an inclined surface that is inclined toward the first fixing portion. Although the inclined surface which the guide 573 has in FIG. 10 shows the example comprised by the curved surface, it may be formed by the plane. Further, although an example in which the guide 573 is provided in the holding portion 556 is shown in FIG. 10, the present invention is not limited to this. The guide 573 may be provided in a different area from the holding portion 556.

  By having such a guide 573, the circuit board 400 is rotated by sliding one end 568 of the circuit board 400 along the inclined surface of the guide 573, and the first fixing portion and the second fixing portion And the third fixing portion.

  The bulging part 222 of the rubber switch 211 is provided corresponding to each key 100. A movable contact is provided in the bulging portion 222. The movable contacts are spaced apart to be able to contact or leave the sensor 300 of the circuit board 400. When the bulging portion 222 of the rubber switch 211 is pressed by the hammer assembly 200 in accordance with the key depression operation of the key 100, the bulging portion 222 elastically deforms and the movable contact contacts the sensor 300. As a result, note-on is output from the signal conversion unit 710 shown in FIG.

  Further, on the end 568 side of the circuit board 400, the first member (the wall 552 and the holding portion 556) provided on the extension plane of the main surface and on the end 569 side of the circuit board 400 And a second member (wall portion 542 and holding portion 555) provided on a plane. In the present specification and the like, the extension plane is a virtual plane that passes one end 568 and the other end 569 of the first surface 581 or the second surface 582. The first member and the second member restrict the movement of the circuit board 400 in the spreading direction of the main surface of the circuit board 400, so these may be referred to as a restricting portion. The first member and the second member may restrict movement of the circuit board 400 in the above direction, and the holding portion 556 may not be included as the first member, and the holding portion 555 is included as the second member. It does not have to be. Further, in FIG. 10, the first member and the second member face each other. That is, the first member and the second member are provided at the same position in the depth direction (scale direction) in the drawing. However, the first member and the second member may be provided at different positions in the paper depth direction (scale direction).

  Further, as shown in FIG. 9, the distance L1 between the first fixing portion and the second fixing portion in the first direction (the width direction D1 of the circuit board 400) is smaller than the width L2 of the circuit board 400 in the first direction. The first fixing portion and the second fixing portion are arranged to be as follows. The distance L1 is the distance from the fixing portion 557 shown in FIG. 9 to the holding portion 555 shown in FIG. 10 in the first direction D1. Since the relationship between L1 and L2 is L1 <L2, the circuit board 400 needs to be rotatably attached.

  Next, a method of rotating the circuit board 400 and attaching it to the frame 500 will be described with reference to FIGS. 6 and 11A to 14B. 11A, FIG. 12A, FIG. 13A, and FIG. 14A show cross-sectional views along the line A1-A2 in FIG. 11B, FIG. 12B, FIG. 13B, and FIG. 14B show cross-sectional views along the line B1-B2 in FIG.

  First, the recessed portion 567 of the circuit board 400 is fitted into the positioning convex portion 561 provided on the frame 500 shown in FIG. 6 to position the circuit board 400 to the left and right.

  As shown in FIG. 11A, one end 568 of the circuit board 400 is inserted into the fixing portion 557 provided on the wall 552. At this time, as shown in FIG. 11B, one end 568 of the circuit board 400 is abutted against the holding portion 556 from an oblique lower side. Next, as shown in FIGS. 11A and 11B, the other end 569 of the circuit board 400 is rotated about the point of one end 568 of the circuit board 400, and the other end of the circuit board 400 is rotated. Push 569 up against rib 550.

  Next, as shown in FIG. 12A, the other end 569 of the circuit board 400 abuts on the inclined surface of the locking portion 559. When the other end 569 of the circuit board 400 is pushed up toward the rib 550 with the other end 569 of the circuit board 400 abutted against the inclined surface of the locking portion 559, the other end 569 of the circuit board 400 makes the inclined surface of the locking portion 559 The force is applied in the direction of the arrow. Further, when the other end 569 of the circuit board 400 is pushed up toward the rib 550, the flexible portion 558 connected to the locking portion 559 is bent toward the wall 542 side. Further, as shown in FIG. 12B, as the circuit board 400 rotates, one end 568 of the circuit board 400 slides on the inclined surface of the guide 573 in the direction of the arrow. At the same time, the other end 569 of the circuit board 400 moves in the direction of the arrow.

  As shown in FIG. 13A, the other end 569 of the circuit board 400 is pushed up toward the rib 550 while abutting on the inclined surface of the locking portion 559. Then, the circuit board 400 contacts the end of the rubber sheet 223. The circuit board 400 is further pushed up toward the rib 550 with the end 560 of the rubber sheet 223 as a fulcrum. Further, in FIG. 13B, one end 568 of the circuit board 400 further slides on the inclined surface of the guide 573 in the direction of the arrow. At the same time, the other end 569 of the circuit board 400 moves in the direction of the arrow.

  As shown in FIG. 14A, when the circuit board 400 further pushes up toward the rib 550 and the circuit board 400 exceeds the locking portion 559, the flexible portion 558 bent toward the wall portion 542 is restored and the wall portion 552 side is restored. Return to The circuit board 400 is fixed by the locking portion 559 as the locking portion 559 enters under the circuit board 400. In addition, since the locking portion 559 enters under the circuit board 400, the downward movement of the circuit board 400 can be restricted. Further, as shown in FIG. 14B, the circuit board 400 can be held between the holding portion 555 and the holding portion 556. Thus, the circuit board 400 can be fixed in the front-rear direction of the key 100.

  For example, depending on the place where the end of the circuit board 409 is attached to the frame 500, the circuit board 400 can not be rotated, and the workability of the mounting operation of the switch board may be reduced.

  In the present embodiment, an inclined surface to be the guide 573 is provided. Thus, the circuit board 400 can be rotated while guiding one end 568 of the circuit board 400 downward along the curved surface of the inclined surface of the guide 573. In addition, when the circuit board 400 is fitted into the frame 500, the circuit board 400 can be rotated before the circuit board 400 is pressed against the rubber sheet 223 and pressed. Thereby, the workability of the rotational attachment work of the circuit board 400 can be improved.

  Further, even when the rubber sheet 223 is provided together with the circuit board 400, the circuit board 400 is rotated and the circuit board 400 is pressed against the rubber sheet 223 in a parallel state, so that a lateral force is applied to the rubber sheet 223 Can be suppressed. Thus, the rubber sheet 223 can be prevented from being distorted. Therefore, the position of the sensor 300 provided on the circuit board 400 can be matched with the position of the movable contact in the rubber switch 211, so that the operation of the key 100 by the player can be accurately detected.

  The guide 573 has a slope toward the wall 552. Thereby, when rotating the other end 569 of the circuit board 400 from the bottom toward the rib 550, it can function as a guide. That is, by sliding the other end 569 of the circuit board 400 along the inclined surface of the guide 573, the circuit board 400 can be fitted between the holding portion 555 and the holding portion 556.

[Modification 1 of Frame Structure]
Next, another form of the frame 500 according to the present embodiment is shown in FIG.

  FIG. 15 is a cross-sectional view of the frame 500 shown in FIG. FIG. 15 corresponds to a cross-sectional view of the frame 500 along the line B1-B2. FIG. 15 is a view after the circuit board 400 is rotated and fixed to the frame 500. In FIG. 15, the detailed description of the same configuration as that of the above-described frame 500 is omitted. Further, in FIG. 15, the rubber switch 211 is not shown.

  The frame 500 shown in FIG. 15 has a configuration which is partially different from the frame 500 shown in FIG. As shown in FIG. 15, the guide 574 has an inclined surface facing the fixing portion 557. Further, the inclined surface of the guide 574 is formed of a flat surface. Thus, the circuit board 400 can be rotated while guiding one end 568 of the circuit board 400 downward along the plane of the guide 574. Thereby, the workability of the rotational attachment work of the circuit board 400 can be improved.

  Further, even when the rubber sheet 223 is provided together with the circuit board 400, the circuit board 400 is rotated and the circuit board 400 is pressed against the rubber sheet 223 in a parallel state, so that a lateral force is applied to the rubber sheet 223 Can be suppressed. Thus, the rubber sheet 223 can be prevented from being distorted. Therefore, the position of the sensor 300 provided on the circuit board 400 can be matched with the position of the movable contact in the rubber switch 211, so that the operation of the key 100 by the player can be accurately detected.

[Modification 2 of Frame Structure]
Next, other forms of the frame 500 according to the present embodiment are shown in FIG. 16 to FIG. The configurations shown in FIGS. 16 to 18 are similar to the configurations described above in that they have the first to third fixing portions.

  FIG. 16 shows a cross-sectional view along line B1-B2 in FIG. FIG. 16 shows an example in which the protrusion 575 is provided from the support member. The protrusion 575 is in the inside of the hole 583 of the circuit board 400. Thereby, the circuit board 400 can be restricted from moving in the spreading direction of the main surface. In addition, the distance L1 between the fixing portion 557 in the first direction D1 (the width direction of the circuit board 400) and the projecting portion 575 is closer to one end 568 from one end 568 of the circuit board 400 in the first direction. It is smaller than the distance L2 to the inner wall of the side hole 583. Since the relationship between L1 and L2 is L1 <L2, the circuit board 400 needs to be rotatably attached.

  FIG. 17 shows a cross-sectional view taken along the line B1-B2 in FIG. FIG. 17 shows an example in which the projecting portion 575 is provided from the rib 550. The protrusion 575 is in the inside of the hole 583 of the circuit board 400. In addition, the distance L1 between the fixing portion 557 in the first direction D1 (the width direction of the circuit board 400) and the projecting portion 575 is closer to one end 568 from one end 568 of the circuit board 400 in the first direction. It is smaller than the distance L2 to the inner wall of the side hole 583. Since the relationship between L1 and L2 is L1 <L2, the circuit board 400 needs to be rotatably attached.

  FIG. 18 shows a cross-sectional view along line A1-A2 in FIG. FIG. 18 shows an example in which one end 568 of the circuit board 400 is on the opposite side (outside) of the locking portion 559 than the fixing portion 557. As shown in FIG. 18, the wall 552 is provided between one end 568 and the other end 569 in the first direction D1. Further, as shown in FIG. 18, the distance L1 between the fixing portion 557 and the wall portion 542 and the holding portion 555 (see FIG. 10) in the first direction D1 is the wall portion 542 and the holding portion 555 in the first direction D1. The width L2 of the circuit board 400 between (see FIG. 10) and the wall 552 and the holding portion 556 (see FIG. 10) is smaller. Also in the configuration shown in FIG. 18, since the relationship between L1 and L2 is L1 <L2, the circuit board 400 needs to be rotatably attached. Although FIG. 18 illustrates the configuration in which the circuit board 400 is expanded to the outside of the wall 552, the circuit board 400 may be expanded to the outside of the wall 542.

  In addition, this invention is not limited to said embodiment, It is possible to change suitably in the range which does not deviate from the meaning.

1: Electronic equipment, 10: Keyboard assembly, 70: Sound source device, 80: Speaker, 90: Case, 100: Key, 100a: White key, 100b: Black key, 100w: White key, 120: Hammer supporting portion, 151 A front end key guide, 153: side key guide, 180: connection portion, 181: plate-like flexible member, 181b: plate-like flexible member, 181 w: plate-like flexible member, 183: key side support, 183b: key side support portion, 183 w: key side support portion, 185 rod-like flexible member, 185 b: rod-like flexible member, 185 w: rod-like flexible member, 200: hammer assembly, 210: front end, 211: rubber Switch 220: shaft support portion 222: bulging portion 223: rubber sheet 230: weight portion 300: sensor 300-1: sensor 300-2: sensor 300-88: sensor 400: circuit board , 10: lower stopper, 430: upper stopper, 500: frame, 510: 511, front end key frame guide, 513: side frame guide, 520: pivoting axis, 540: rib, 542 wall, 544: post , 550: rib 551: rib 552: wall 553: rib 554: wall 555: holding portion 556: holding portion 557: fixing portion 558: flexible portion 559: locking portion 560: end, 561: positioning projection, 562: holding portion, 563: holding portion, 565: rib, 566: rib, 567: recess, 568: end, 569: end, 570: boss, 571: Boss, 572: Support part, 573: Guide, 574: Guide, 575: Projection part, 585: Frame side support part, 710: Signal conversion part, 730: Sound source part, 750: Output part

Claims (11)

Plate member,
The first end side of the main surface of the plate-like member is provided on the first surface side of the main surfaces of the plate-like member, and restricts the movement of the plate-like member to the first surface side A first fixed part,
The second end side of the main surface opposite to the first end side is provided on the first surface side, restricts movement of the plate-like member to the first surface side, and is movable The second fixed part,
It is provided on the second surface side opposite to the first surface side between the first fixing portion and the second fixing portion, and restricts the movement of the plate-like member to the second surface side. The third fixed part,
A restricting portion that restricts the movement of the plate-like member in the spreading direction of the main surface;
A guide provided on the second surface side of the plate-like member on the first end side and having an inclined surface inclined toward the first fixing portion;
Has an electronic musical instrument. The third fixing portion includes a support member and an elastic member softer than the support member,
The electronic musical instrument according to claim 1, wherein the elastic member restricts the movement of the plate-like member to the second surface side. The second fixing portion has a locking portion and a flexible portion,
The locking portion regulates movement of the plate-like member to the first surface side by locking the plate-like member,
The movement to the said 1st surface side of the said plate-shaped member is attained because the said flexible part is flexible and the said latching | locking part moves in the expansion direction of the said main surface. Electronic musical instrument described. Plate member,
A first fixing portion in contact with the first surface of the main surfaces of the plate-like member on the first end side of the main surface of the plate-like member;
A second fixed portion movable in contact with the first surface and movable on the second end side of the main surface opposite to the first end side;
A third fixing portion in contact with a second surface opposite to the first surface side between the first fixing portion and the second fixing portion;
A first member provided on an extension plane of the main surface on the first end side;
At the second end side, a second member provided on an extension plane of the main surface;
And a guide provided on the second surface side of the plate-like member on the first end side and having an inclined surface that is inclined toward the first fixing portion,
An electronic musical instrument, wherein a distance between the first fixing portion and the second member in a first direction is smaller than a width of the plate-like member in the first direction. Plate member,
A first fixing portion in contact with the first surface of the main surfaces of the plate-like member on the first end side of the main surface of the plate-like member;
A second fixed portion movable in contact with the first surface and movable on the second end side of the main surface opposite to the first end side;
A third fixing portion in contact with a second surface opposite to the first surface side between the first fixing portion and the second fixing portion;
A guide provided on the second surface side of the plate-like member on the first end side and having an inclined surface inclined toward the first fixing portion;
And a protrusion,
The plate-like member is provided with a hole on the second surface side,
The protrusion enters inside the hole of the plate-like member,
The electronic musical instrument according to claim 1, wherein a distance between the first fixing portion and the protrusion in a first direction is smaller than a distance between the first end and the hole in the second surface in the first direction. The third fixing portion includes a support member and an elastic member softer than the support member,
The electronic musical instrument according to claim 4, wherein the elastic member is in contact with the second surface. The second fixing portion has a locking portion and a flexible portion,
The locking portion is in contact with the first surface,
The electronic musical instrument according to any one of claims 4 to 6, wherein the locking portion moves out of the first surface by the flexible portion being flexible. The second fixing portion has a locking portion and a flexible portion,
The locking portion is in contact with the first surface,
The flexible portion is connected to the second member,
The electronic musical instrument according to claim 4, wherein the locking portion moves out of the first surface by the flexible portion being flexible.   The electronic musical instrument according to claim 4, wherein the first member is provided between the first end and the second end in the first direction.   The distance between the first fixing portion and the second member in the first direction is smaller than the width of the plate-like member between the first member and the second member in the first direction. The electronic musical instrument according to claim 9.   The electronic musical instrument according to any one of claims 1 to 10, wherein the plate-like member is a circuit board.

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