JP2018180071A - Music instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a music instrument having a reaction force generation member which can secure stable reaction force and durability.SOLUTION: A music instrument comprises: a plurality of ribs which are arranged in a first direction and include projections; a reaction force generation member having a plurality of openings arranged in the first direction; and a plurality of operators which are arranged in the first direction and are brought into contact with the reaction force generation member in a movable range. The reaction force generation member is arranged over the plurality of ribs by inserting the projections into the plurality of openings. The plurality of ribs may include first ribs and second ribs in which the number of projections is smaller than that of the first ribs.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an instrument.

  In general, an electronic keyboard instrument such as an electronic piano is provided with a key switch for detecting the movement of the key. One example of a key switch is known that includes a movable contact that moves up and down according to the movement of the key, and a fixed contact disposed below the movable contact. For example, Patent Document 1 discloses a dome component in which a movable contact is provided on an elastically deformable member processed into a dome shape.

JP, 2015-185270, A

  The dome component described in Patent Document 1 has a dome portion elastically deformed by pressing, and a base portion extending to the outside of the dome portion. The dome part is configured by integrally forming the dome part and the base part by an elastic body. Then, the base portion is sandwiched between the main body portion (for example, frame) of the electronic keyboard instrument and the support plate (for example, circuit board) to fix the position of the dome portion (that is, the position of the movable contact) with respect to the fixed contact.

  In Patent Document 1, a plurality of through holes are provided in the base portion, and by passing rod-like pins projecting from the main body portion in these through holes, positioning of the dome component with respect to the main body portion is performed. However, when the number of the through holes provided in the base is large, there are problems such as a decrease in durability of the base, a decrease in efficiency of attaching the base to the main body, and an increase in wasted elastic material. There was room for further improvement.

  One of the problems of the present invention is to provide a musical instrument provided with a reaction force generating member (member for generating a reaction force by elastic deformation) capable of securing stable reaction force and durability.

  One of the problems to be solved by the present invention is to improve the workability of positioning a reaction force generating member in an instrument provided with a reaction force generating member.

  One of the problems of the present invention is to reduce the manufacturing cost of a reaction force generating member in an instrument provided with a reaction force generating member.

  The musical instrument according to the embodiment of the present invention is arranged in the first direction, and a plurality of ribs each having a projection, a reaction force generating member having a plurality of openings aligned in the first direction, and arranged in the first direction. And a plurality of operators in contact with the reaction force generating member in a movable range, wherein the reaction force generating member is disposed across the plurality of ribs by inserting the projection into the plurality of openings. Ru. The "operation element" in this case refers to a member that acts on the musical instrument according to the operation of the player. For example, in the case of a keyboard instrument such as a piano, the operating element may be any of a key, a hammer assembly, and an operating device composed of a key and a hammer assembly. That is, the operating element may refer to an operable member such as a key, a pedal, a key or the like, and a combination (assembly) of such a member and another member transmitting a force in conjunction with the operation of the member. You may point to

  The plurality of ribs may include a first rib and a second rib having a smaller number of the protrusions than the first rib.

  The plurality of openings may constitute a first line formed of the openings aligned in the first direction, and a second line formed of a smaller number of openings than the first line. .

  The plurality of ribs include a first rib positioned between adjacent first operators and a second rib positioned between adjacent first operators and second operators, the first rib And a first protrusion located in the second rib constitutes a first row aligned in the first direction, and a second protrusion located in a part of the first rib and the second rib is the first protrusion located in the first direction. The second row may be arranged in one direction.

  At this time, a plurality of second ribs are disposed between the adjacent first ribs, and the plurality of second ribs have a rib having the second protrusion and the second protrusion. There may be no ribs.

  The plurality of ribs include a first set of ribs spaced apart by a first distance, and a second set of ribs spaced apart by a second distance narrower than the first distance, and constitute the second set of ribs Each of the two ribs may have a different number of the protrusions.

  At this time, the second interval may be the narrowest interval among a plurality of intervals formed by the plurality of ribs.

  The reaction force generating member may include a support portion and a bulging portion supported by the support portion, and the bulging portion may be located between two adjacent ribs in a plan view. The bulging portion may overlap the two ribs when viewed from the first direction.

  The first direction may be a scale direction. In addition, the controller may include a key or a member that transmits a force in conjunction with the key.

  According to one embodiment of the present invention, it is possible to provide a musical instrument provided with a reaction force generating member capable of securing stable reaction force and durability.

  According to one embodiment of the present invention, in a musical instrument provided with a reaction force generating member, the workability of positioning the reaction force generating member can be improved.

  According to an embodiment of the present invention, in a musical instrument provided with a reaction force generating member, the manufacturing cost of the reaction force generating member can be reduced.

It is a figure which shows the structure of the keyboard apparatus of one Embodiment of this invention. It is a block diagram showing composition of a sound source device of one embodiment of the present invention. It is a figure which shows an example which looked at the structure inside the housing | casing of one Embodiment of this invention from the side. It is explanatory drawing at the time of seeing the structure inside the housing | casing in one Embodiment of this invention from a back surface (lower surface). It is a figure which shows the positional relationship of the flame | frame and contact member in one Embodiment of this invention. It is a figure which shows an example of a structure of the contact member in one Embodiment of this invention. It is a figure which shows the positional relationship of a flame | frame, a contact member, and a circuit board at the time of mounting | wearing a circuit board with respect to a flame | frame. It is a figure which shows the positional relationship of a flame | frame, a contact member, and a circuit board after mounting a circuit board with respect to a flame | frame. It is a figure which shows the positional relationship of the flame | frame and key in one Embodiment of this invention. It is a figure which shows an example of a structure of the flame | frame in one Embodiment of this invention. It is a figure which shows an example of a structure of the flame | frame in one Embodiment of this invention.

  Hereinafter, embodiments 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 keyboard device]
FIG. 1 is a view showing the configuration of a keyboard device according to an embodiment of the present invention. In this example, the keyboard 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 keyboard 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 keyboard device 1 may not have the sound source device.

  The keyboard device 1 includes a keyboard assembly 10. The keyboard assembly 10 includes a white key 100 w and a black key 100 b. A plurality of white keys 100 w and black keys 100 b are arranged side by side. The number of keys 100 is N, which is 88 in this example. The arranged direction (D1 direction in FIG. 1) is referred to as the 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. When the keyboard 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 keyboard 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 keyboard 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. Although the direction D1 shown in FIG. 1 can be expressed as the left-right direction, it may be expressed as the scale direction as described above. The direction D2 shown in FIG. 1 can be expressed as the front-rear direction.

  Also, the direction may be indicated with reference to the key 100, such as the front end side of the key and the rear end side 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 plurality of sensors 300-1, 300-2, ..., 300-88 (hereinafter referred to simply as "sensor 300" when it is not necessary to distinguish them individually) are provided corresponding to each key 100. Detects the 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 according to the interval of this signal.

  The signal conversion unit 710 acquires an output signal of the sensor 300, and generates and outputs an operation signal according to the operation state of each key 100. 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. 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 keyboard assembly 10 is a resin-made structure, most of which are manufactured by injection molding or the like. The frame 500 is fixed to the housing 90.

  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 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 flexible member 181. The flexible member 185 is a so-called snap fit, and connects the key side support portion 183 and the frame side support portion 585 of the frame 500. That is, the flexible member 185 is disposed between the key 100 and the frame 500. Flexure of the flexible member 185 allows the key 100 to pivot relative to the frame 500.

  The key 100 includes a front end key guide 151 and a side key guide 153. The front end key guide 151 slidably contacts the front end frame guide 511 of the frame 500. The front end key guide 151 is in contact with the front end frame guide 511 on both sides in 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 the region corresponding to the non-appearance portion NV in the side surface of the key 100, and exists on the key front end side with respect to the connection portion 180 (plate-like flexible member 181). , And 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 outer appearance portion PV (forward of the rear end of the key body portion).

  In the hammer assembly 200, a metal weight portion 230 is disposed on the back side of the pivot shaft 520. In a normal state (when the key is not depressed), the weight portion 230 is placed on the lower stopper 250, 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 260. The hammer assembly 200 applies a weight to the key depression by the weight portion 230. The lower stopper 250 and the upper stopper 260 are formed of a buffer material or the like (non-woven fabric, elastic body or the like).

  Below the hammer support portion 120 and the front end portion 210, a circuit board 400 for performing various signal processing is attached to the frame 500. The circuit board 400 is provided so as to be parallel to the mounting surface of the housing 90 in a sectional view.

  On the circuit board 400, a bulging portion 212a provided with a conductor functioning as a contact is disposed on a support made of a resin material. The bulging portion 212 a is a movable member provided with a contact, and a plurality of bulging portions 212 a are provided in the scale direction corresponding to each key 100. The bulging portion 212 a is disposed to face the sensor 300 (not shown) of the circuit board 400 so as to be in contact with or separated from the sensor 300 (not shown). Here, when the bulging portion 212a is pushed by the front end portion 210 of the hammer assembly 200 in accordance with the key depression operation of the key 100, the bulging portion 212a is deformed and crushed. When the sensor 300 on the circuit board 400 detects the contact with the electrode of the bulging portion 212a, the sensor 300 outputs a detection signal to an integrated circuit 410 (FIG. 5) described later. As a result, the key depression operation of the key 100 is detected, and a note on is output from the signal conversion unit 710 shown in FIG.

[Structure of frame and circuit board]
FIG. 4 is an explanatory view when the configuration inside the housing in the embodiment of the present invention is viewed from the back surface (lower surface). Specifically, it corresponds to a plan view of the circuit board 400 and the frame 500 shown in FIG. 3 as viewed from below. Here, in particular, description will be given focusing on the configuration of the circuit board 400 and the frame 500 and the positional relationship between the two.

  First, the schematic configuration of the circuit board 400 will be described. In the keyboard device 1 of the present embodiment, the circuit board 400 is divided into three parts, a central circuit board 400C, a right circuit board 400R, and a left circuit board 400L. However, this is merely an example, and the number of divisions of the circuit board 400 is arbitrary, and it is also possible to configure with one board without dividing. In the present specification, the central circuit board 400C, the right circuit board 400R, and the left circuit board 400L may be collectively referred to as the circuit board 400 if it is not necessary to distinguish them.

  The circuit board 400 has a positioning portion 402 at a substantially central position in the scale direction (D1 direction) which is the longitudinal direction. Here, “almost center” is a concept including not only the center in a strict sense but also a range (near the center) that can be regarded as the center by those skilled in the art. In the present embodiment, a notch (recess) provided in the circuit board 400 is used as the positioning unit 402. As described later, the positioning portion 402 engages with the first positioning portion 544 of the front end support portion 540 to determine the position of the circuit board 400. However, the same function may be realized by providing a projection instead of the notch as the positioning part 402 and providing a notch as the first positioning part 544 instead of the projection. Alternatively, the circuit board 400 may be provided with an opening for positioning, and the same function may be realized by inserting a projection or the like protruding from the frame 500 or another member into the opening. In the present embodiment, an example is shown in which the position where the positioning portion 402 is disposed is set to a substantially central position in the scale direction of the circuit board 400, but the present invention is not limited thereto.

  The circuit board 400 also has openings 404 and 406. The openings 404 are arranged along the scale direction (direction D1) on the rear end side of the circuit board 400, that is, in the vicinity of a rear end support 530 described later. The openings 406 are disposed along the scale direction closer to the front end side of the circuit board 400 than the openings 404. The openings 404 and 406 are disposed at positions overlapping with a first rib 550 and a second rib 552 described later. Further, in the present embodiment, the number of the openings 406 is smaller than the number of the openings 404. The shape of the openings 404 and 406 is not limited to a circle, but may be any shape such as an ellipse, a rectangle, or a square having rounded corners.

  The frame 500 includes a rear end support 530 supporting the rear end of the circuit board 400, a front end support 540 supporting the front end of the circuit board 400, a first rib 550, and a second rib 552. The front end support portion 540 includes a front end support portion 540C for supporting the front end of the central circuit board 400C, a front end support portion 540R for supporting the front end of the right circuit board 400R, and a front end support portion 540L for supporting the front end of the left circuit board 400L. including. In the present specification, the front end support portion 540R and the front end support portion 540L supporting the front end of the left circuit board 400L are collectively referred to as the front end support portion 540 unless it is particularly necessary to distinguish.

  The first rib 550 and the second rib 552 are provided to increase the strength of the frame 500. Here, "rib" refers to a wall-like or plate-like member. In the present embodiment, the first rib 550 and the second rib 552 are connected to the rear end support 530 and the front end support 540. Specifically, the first rib 550 is positioned between two adjacent white keys 100w, and reinforces the frame 500 toward the rear end side of the hammer assembly 200 (not shown). The bosses 532 are provided on the first rib 550 and are used to fix the housing 90 and the frame 500 shown in FIG. The second ribs 552 are located between the adjacent white key 100 w and the black key 100 b, and a plurality of the second ribs 552 are disposed between the adjacent first ribs 550. Although not shown in FIG. 4, the hammer assembly 200 shown in FIG. 3 is disposed between the adjacent first rib 550 and the second rib 552 or between the adjacent second ribs 552, respectively. Ru.

  Rod-shaped (pin-shaped) protrusions 554 and 556 are provided on the first rib 550 and the second rib 552, respectively. When the circuit board 400 is attached to the frame 500, the protrusions 554 and 556 are disposed at positions overlapping the openings 404 and 406 of the circuit board 400, respectively. That is, when the circuit board 400 is attached to the frame 500, the protrusions 554 and 556 are inserted into the openings 404 and 406 of the circuit board 400, respectively. In the present embodiment, the number of protrusions 556 is smaller than the number of protrusions 554. That is, the projection 556 is not disposed with respect to a part of the second rib 552.

  The rear end support portion 530 includes a support portion 534 for preventing the circuit board 400 from falling off and a positioning portion 536 for determining the position of the circuit board 400 in the front-rear direction (D2 direction), in addition to the boss 532. In the present embodiment, the support portion 534 is configured by a so-called snap fit, but is not limited thereto. The positioning portion 536 is composed of a protrusion having a curved surface facing the front end support portion 540. As described later, the positioning unit 536 has a function of positioning the circuit board 400 in the front-rear direction (D2 direction).

  The front end support portion 540 is a support portion 542 for preventing the circuit board 400 from falling off, a first positioning portion 544 for determining the position of the circuit board 400 in the scale direction (D1 direction), and the front and back direction (D2 direction) of the circuit board 400 And a second positioning unit 546 for determining the position of The support portion 542 is disposed at a position spaced apart from the second rib 552 in the vertical direction (the height direction of the keyboard device 1). The circuit board 400 is supported with its front end sandwiched between the second rib 552 and the support portion 542.

  In addition, the first positioning portion 544 is configured by a protrusion that protrudes toward the rear end support portion 530. Basically, it is preferable to match the position where the first positioning portion 544 is provided with the center position of the circuit board 400 in the scale direction (direction D1), but the present invention is not limited to this. It does not matter. The second positioning portion 546 abuts on the front end of the circuit board 400 and plays a role of preventing movement of the circuit board 400 to the front side (player side).

  In mounting the circuit board 400 on the frame 500, first, the front end of the circuit board 400 is inserted between the second rib 552 and the support portion 542 of the front end support portion 540. At this time, the position of the first positioning portion 544 in the front end support portion 540 and the position of the positioning portion 402 provided on the front end of the circuit board 400 are matched.

  Next, the rear end side of the circuit board 400 is pushed toward the second rib 552. When the circuit board 400 moves to a predetermined position, the circuit board 400 is supported by the function of the support portion 534 in the rear end support portion 530. At that time, the rear end of the circuit board 400 is pushed forward by sliding along the curved surface of the positioning portion 536 of the rear end support portion 530. Then, when the front end of the circuit board 400 abuts on the second positioning portion 546 of the front end support portion 540, the position of the circuit board 400 in the front-rear direction is determined.

[Configuration of contact member]
The bulging portion 212a shown in FIG. 3 is made of a resin material, and is supported by a sheet-like member made of the same resin material (hereinafter, referred to as "support member 212b"). Further, although not shown, a support member 212b is sandwiched between the frame 500 and the circuit board 400 shown in FIG. 4 so that the position of the bulging portion 212a is fixed. In the following description, the bulging portion 212a, the support member 212b, and the movable contact 212c provided on the bulging portion 212a are collectively referred to as a "contact member 212".

  FIG. 5 is a view showing the positional relationship between the frame and the contact member in an embodiment of the present invention. Specifically, FIG. 4 corresponds to a diagram in which only the circuit board 400 is removed. As shown in FIG. 5, the contact member 212 extends in the scale direction (D1 direction) across the first rib 550 and the second rib 552. The position of the bulging portion 212a is determined by the positions of the white key 100w and the black key 100b, and is disposed so as not to overlap with the first rib 550 and the second rib 552. At this time, the projection 554 and the projection 556 described above are inserted into the two rows of openings 213a and 213b provided in the support member 212b, and the contact member 212 is positioned.

  Here, a specific configuration of the contact member 212 will be described with reference to FIG. FIG. 6A to FIG. 6C are diagrams showing an example of the configuration of the contact member in the embodiment of the present invention. Specifically, FIG. 6A is a plan view of the contact member including the bulging portion 212a. FIG. 6B corresponds to a view obtained by cutting the plan view shown in FIG. 6A along dashed dotted line A-A '. Further, FIG. 6C corresponds to a view obtained by cutting the plan view shown in FIG. 6A by a dashed dotted line B-B '.

  In FIGS. 6A to 6C, the plurality of bulging portions 212a are respectively supported by the support member 212b, and constitute one component (contact member 212) as a whole. In the present embodiment, the bulging portion 212a and the support member 212b are integrally formed of the same resin material. The plurality of bulging portions 212a are arranged in the scale direction (D1 direction) with respect to the support member 212b having the longitudinal direction in the scale direction (D1 direction). Further, the plurality of bulging portions 212a each include a movable contact 212c. In the present embodiment, when the hammer assembly 200 operates in conjunction with the depression of the key 100 which is an example of the operating element and is pushed by the front end portion 210 of the hammer assembly 200 to deform the bulging portion 212a, the movable contact 212c Contacts the sensor 300 of the circuit board 400. The sensor 300 detects the presence or absence of the touch and detects the presence or absence of the key depression operation.

  At this time, the support member 212b is provided with a plurality of openings 213a and 213b. Specifically, the opening 213a is provided on the side of the rear end and the opening 213b is provided on the side of the front end in the front-rear direction (D2 direction) in the region between the adjacent bulging portions 212a. Here, the positions where the openings 213a and 213b are disposed correspond to the positions of the protrusions 554 and 556 provided on the first rib 550 or the second rib 552 of the frame 500, respectively. Specifically, the openings 213a and the openings 213b are arranged in the scale direction (direction D1). In other words, the openings 213a disposed on the rear end side of the support member 212b form a first row aligned in the D1 direction, and the openings 213b disposed on the front end side of the support member 212b align in the D1 direction Configure the second column.

  Further, as shown in FIG. 6C, the upper surface of the bulging portion 212a is an inclined surface 212a-1. The inclined surface 212a-1 is higher on the side closer to the opening 213b than on the side closer to the opening 213a. In the present embodiment, the lower position of the inclined surface 212a-1 in the bulging portion 212a is determined according to the position of the rotation center of the hammer assembly 200 (that is, the rotation shaft 520 in FIG. 3) described later. There is.

  The “rotation center” mentioned here is not limited to the rotation center when the hammer assembly 200 strictly performs a circular motion. That is, when the posture of the hammer assembly 200 transitions from the first posture to the second posture, it is assumed that the transition of the posture is temporarily due to the rotation of the hammer assembly 200. Is a concept that also For example, when the hammer assembly 200 acts on the bulging portion 212a by a combination of linear motion and circular motion, it can be regarded as being rotated around a temporary rotation center.

  FIGS. 7A and 7B are diagrams showing the positional relationship between the frame 500, the contact member 212, and the circuit board 400 when the circuit board 400 is attached to the frame 500, respectively. Specifically, FIG. 7A is a view showing the positional relationship between the frame 500, the contact member 212, and the circuit board 400 before the circuit board 400 is mounted on the frame 500. As shown in FIG. FIG. 7B is a view showing the positional relationship between the frame 500, the contact members 212, and the circuit board 400 after the circuit board 400 is attached to the frame 500.

  As shown in FIGS. 7A and 7B, the contact member 212 is disposed between the frame 500 and the circuit board 400. That is, when attaching the circuit board 400 to the frame 500, the contact member 212 (strictly, the support member 212b constituting the setting member 212) is sandwiched between the frame 500 and the circuit board 400. There is. 7A, the protruding portions 554 provided on the first rib 550 and the second rib 552 penetrate the opening 213a of the contact member 212 and the opening 404 of the circuit board 400. It is shown that. As shown in FIG. 7B, the contact member 212 is held between the frame 500 and the circuit board 400 in a sandwiched state.

  FIGS. 8A, 8B, and 8C are diagrams showing the positional relationship between the frame 500, the contact members 212, and the circuit board 400 after the circuit board 400 is mounted on the frame 500, respectively. is there. Specifically, FIG. 8A is a plan view showing the positional relationship between the frame 500, the contact members 212, and the circuit board 400 after the circuit board 400 is mounted on the frame 500. As shown in FIG. However, FIG. 8A shows a view from the lower side (the side on which the circuit board 400 is disposed). FIG. 8B corresponds to a cross-sectional view of the plan view of FIG. 8A taken along dashed-dotted line C-C '. FIG. 8C corresponds to a cross-sectional view of the plan view of FIG. 8A taken along dashed-dotted line D-D '.

  As shown in FIG. 8A, the first rib 550 is provided with both the protrusion 554 and the protrusion 556. On the other hand, in the second rib 552, in addition to the ribs provided with the protrusions 554 and the protrusions 556, there are also ribs not provided with the protrusions 556. That is, the protrusions 556 are not provided on a part of the second rib 552, and the number of the protrusions 556 is smaller than that of the protrusions 554.

  As shown in FIG. 8B, looking at a cross section taken along the alternate long and short dash line CC 'in FIG. 8A, in the circuit board 400, the portion overlapping with the projection 554 and the projection 556 is: Openings 404 and 406 are respectively disposed. Further, openings 213a and 213b are disposed in portions of the support member 212b of the contact point member 212 which overlap with the projection 554 and the projection 556, respectively. At this time, the protrusion 554 penetrates the opening 404 and the opening 213a. In addition, the protrusion 556 penetrates the opening 406 and the opening 213 b. Thereby, the position of the contact member 212 with respect to the frame 500 can be determined.

  On the other hand, as shown in FIG. 8C, when a cross section obtained by cutting FIG. 8A along the alternate long and short dash line DD ′ is seen, the circuit board 400 has an opening at a portion overlapping with the projection 554. Although the portion 404 is disposed, the opening 406 is not disposed at a portion overlapping the portion where the projection 556 is not provided. Further, the opening 213a is disposed in the portion overlapping the projection 554 in the support member 212b of the contact member 212, but the opening 213b is disposed in the portion overlapping the portion where the projection 556 is not provided. Not. As described above, in the present embodiment, the number of the protrusions 556 is reduced compared to the protrusions 554, thereby reducing the number of the openings 213b provided in the support member 212b configuring the contact member 212.

  In the present embodiment, the contact member 212 (more specifically, the support member 212 b of the contact member 212) is interposed between the first rib 550 and the second rib 552 and the circuit board 400, but It is not limited to For example, if it is not necessary to use the circuit board 400, it may be sandwiched by a plate-like member.

  In addition, it is possible to provide a retaining portion so that the support member 212b made of a resin material does not come off, such as making the tip portions of the protrusions 554 and 556 thicker than other portions. It is. In this case, the support member 212b may not be pressed using the circuit board 400 or the above-described plate-like member.

  As shown in FIGS. 7B and 8B, in plan view, the bulging portion 212a is disposed so as to be accommodated between adjacent ribs. That is, in the scale direction (D1 direction), the bulging portion 212 a is disposed side by side with the first rib 550 and the second rib 552. Further, as shown in FIG. 8B, the bulging portion 212a is disposed so as to overlap the first rib 550 or the second rib 552 when viewed from the scale direction (D1 direction).

  At this time, as shown in FIG. 3, the inclined surface 212 a-1 of the bulging portion 212 a is disposed below the front end portion 210 of the hammer assembly 200. Then, the front end portion 210 moves up and down between the second ribs 552 in accordance with the key depression operation of the key 100, and abuts on the bulging portion 212a to be deformed. As a result, the movable contact 212 c and the sensor 300 provided on the lower circuit board 400 come into contact with each other, and the key depression operation of the key 100 can be detected.

  As described above, in the present embodiment, the first rib 550 is provided with both the protrusion 554 and the protrusion 556, and the second rib 552 is provided with the protrusion 554 and the protrusion 556. Besides the ribs, there are ribs not provided with the protrusion 556. This is due to the fact that the second rib 552 is narrower than the first rib 550.

  FIG. 9 is a diagram showing the positional relationship between a frame and a key in an embodiment of the present invention. Specifically, it is a diagram showing the relationship between the first rib 550 and the second rib 552, and the white key 100w and the black key 100b. As shown in FIG. 9, the first rib 550 is located between the adjacent white keys 100w. The second rib 552 is located between the adjacent white key 100 w and the black key 100 b.

  Since the first rib 550 having a relatively large width in the scale direction (D1 direction) is disposed between the adjacent white keys 100 w, the second rib adjacent to the first rib 550 results from the restriction of the arrangement space. The width 552 is narrower than the first rib 550 in the D1 direction. That is, compared with the first rib 550, the second rib 552 is restricted in the space for providing the protrusion and the like, and the tolerance is narrower than the dimensional error at the time of manufacture.

  Based on the above, in the present embodiment, both the protrusion 554 and the protrusion 556 are provided for the first rib 550, and the protrusion 556 is not provided for a part of the second rib 552. . In other words, the protrusions 554 located on the first rib 550 and the second rib 552 form a first row aligned in the direction D1, and the protrusions 556 located on a part of the first rib 550 and the second rib 552 Constitute a second row aligned in the D1 direction. Each of the first row constituted by the projections 554 and the second row constituted by the projections 556 is constituted by the first row constituted by the plurality of openings 213a and the plurality of openings 213b in FIG. Corresponds to the second column.

  As described above, in the present embodiment, the plurality of protrusions (specifically, the protrusions 554 and 556) provided on the plurality of ribs (specifically, the first rib 550 and the second rib 552). Can support the contact member 212. At this time, the projection 556 is not provided for a part of the plurality of ribs (specifically, a part of the second rib 552), and a corresponding part of the contact member 212 (specifically, the support member) The opening portion 213b is not provided in part of the portion 213b.

  As described above, according to the present embodiment, the keyboard device 1 having a novel structure in which the contact members 212 are supported using the protrusions 554 and the protrusions 556 provided on the plurality of ribs aligned in the scale direction (D1 direction). Can be provided. Further, at this time, the number of the projections 556 is reduced as compared with the projections 554, thereby reducing the number of openings 213b provided in the support member 212b constituting the contact member 212. As a result, it is possible to reduce the amount of material that is wasted when manufacturing the contact member 212, and to realize cost reduction of the contact member 212. In addition, since the number of the openings 213b is reduced, the work of inserting the protrusions 556 can be omitted, and the workability when attaching the contact member 212 to the frame 500 is improved. Furthermore, since the contact member 212 can be supported at a small position without applying an unbalanced load, the reaction force of the bulging portion 212a is stabilized, and the contact member 212 having improved durability of the support member 212b is realized. Can.

Second Embodiment
In the first embodiment, the first rib 550 and the second rib 552 are described as an example of the configuration in which the rear end support portion 530 and the front end support portion 540 of the frame 500 are connected to each other. It is not a thing. For example, the second rib 552 may include a gap between the rear end support 530 and the front end support 540 of the frame 500. That is, the second ribs 552 may be all disconnected between the rear end supporting portion 530 and the front end supporting portion 540 of the frame 500, or may be a mixture of an interrupted one and an interrupted one. In the present embodiment, description will be made focusing on the difference in configuration from the first embodiment, and the same configuration will be assigned the same reference numerals and descriptions thereof will be omitted.

  FIG. 10 is a diagram showing an example of the configuration of the frame 500 according to an embodiment of the present invention. In the present embodiment, the first rib 550 connects between the rear end support portion 530 and the front end support portion 540 of the frame 500 as in the first embodiment. On the other hand, the second rib 552a of the present embodiment is divided into the rear end 52a on the rear end support 530 side and the front end 52b on the front end support 540 side. Therefore, the projection 554 is disposed at the rear end 52a of the first rib 550 and the second rib 552a, and the projection 556 is disposed at a portion of the front end 52b of the first rib 550 and the second rib 552a. .

  In FIG. 10, although the first rib 550 is configured to connect between the rear end supporting portion 530 and the front end supporting portion 540 of the frame 500, as long as the strength allows, the rear side of the first rib 550 is the same as the second rib 552. The end support 530 and the front end support 540 may be interrupted.

  As described above, the structures of the first rib 550 and the second rib 552 disposed between the rear end supporting portion 530 and the front end supporting portion 540 of the frame 500 can be appropriately changed. Although not shown in FIG. 10, the first rib 550 and the second rib 552 also have a width in the vertical direction (height direction) as shown in FIGS. 8 (B) and 8 (C). There is. At this time, the width in the vertical direction can also be changed as appropriate.

Third Embodiment
In the first embodiment, the positions at which the protrusions 556 are arranged are described based on the relationship between the first rib 550 and the second rib 552 and the white key 100 w and the black key 100 b. The position where the protrusion 556 is disposed will be described based on FIG. In the present embodiment, description will be made focusing on the difference in configuration from the first embodiment, and the same configuration will be assigned the same reference numerals and descriptions thereof will be omitted.

  FIG. 11 is a diagram showing an example of the configuration of the frame 500 according to an embodiment of the present invention. In the present embodiment, the frame 500 includes a first rib 550, a second rib 552b, a third rib 552c, and a fourth rib 552d. In the present embodiment, an example is shown in which the widths in the scale direction (D1 direction) in the first rib 550, the second rib 552b, and the third rib 552c are different, but the present invention is not limited thereto. For example, the widths in the D1 direction of the second rib 552b and the third rib 552c may be the same.

  Here, the distance between the first rib 550 and the second rib 552b is L1, the distance between the second rib 552b and the third rib 552c is L2, and the distance between the third rib 552c and the fourth rib 552d is Let the interval between them be L3. In the present embodiment, intervals L1 to L3 are defined with reference to the center line of each rib in plan view. However, the distance between the side edges of each rib is not limited to this, and may be defined as the intervals L1 to L3.

  As shown in FIG. 11, in the present embodiment, the relationship of L1 <L3 <L2 is established. That is, since the pair formed by the first rib 550 and the second rib 552b which are separated by the space L1 has the narrow space L1, the arrangement space of the ribs is restricted. Specifically, the width of the second rib 552b in the D1 direction is narrowed. On the other hand, since the pair formed by the second rib 552b and the third rib 552c which are separated by the space L2 has a wide space L2, some space is provided in the arrangement space of the ribs. Specifically, the width in the D1 direction of the third rib 552c is wider than that of the second rib 552b.

  As shown in FIG. 8A, the bulging portion 212a of the contact member 212 is disposed between the ribs. Therefore, when the space between the ribs is narrowed, the space for arranging the bulging portion 212a has no margin, and the width of the rib in the D1 direction is narrowed by that amount. Therefore, in the portion where the distance between the ribs is narrow, the width of either of the pair of ribs is narrowed, which restricts the space in which the protrusion 556 is disposed.

  In such a case, in the present embodiment, the protrusion 556 is not provided on one of the two ribs arranged to have a narrow rib spacing. Specifically, in FIG. 11, the first set of ribs (the second rib 552b and the third rib 552c) separated by an interval L2 and the second set of ribs (a first set of ribs separated by an interval L1 smaller than the interval L2) In the case of including the rib 550 and the second rib 552 b), the protrusion 556 of the second rib 552 b is omitted among the two ribs (the first rib 550 and the second rib 552 b) constituting the second set of ribs. .

  As described above, in the configuration having a plurality of ribs, it is possible to distinguish between the rib provided with the projection 556 and the rib not provided with the projection 556 based on the difference in the distance between the ribs.

  In the case of the present embodiment, it is preferable that a set composed of two ribs including a rib having a configuration in which the projection 556 is not provided be a set having the narrowest interval between the ribs. In this case, the restriction in the case of arranging the bulging portion 212a of the contact member 212 between the ribs is the largest, and therefore, the width in the D1 direction of one of the two ribs becomes narrow.

Fourth Embodiment
In the first embodiment, an example in which the contact member 212 is positioned using the protrusions 554 and the protrusions 556 provided in the first rib 550 and the second rib 552 in the frame 500 has been described. Application is also possible. That is, it is possible to apply, when fixing a member which has elasticity like a member constituted by resin material by a projection provided in a rib. A member having such elasticity generates a reaction force. In the present specification, a member that generates a reaction force is referred to as a “reaction force generation member”. The contact member 212 in the first embodiment is an example of a reaction force generating member.

  As the reaction force generating member, for example, in FIG. 3, the reaction force generating member made of a resin material is disposed below the front end portion 210 of the hammer assembly 200, and the white key 100w or the black key 100b is disposed via the hammer assembly 200. It is also possible to give the player a feeling of touch by giving a reaction force to. Furthermore, it is also possible to apply the present invention when supporting a reaction force generating member acting on a pedal provided in a musical instrument such as a piano or a drum by a plurality of ribs. The musical instruments in this case include so-called electronic musical instruments.

  As described above, the present invention can be applied to the case of supporting a member having elasticity (that is, a reaction force generating member) using the projections provided on a plurality of ribs.

  As mentioned above, although each embodiment was described taking the keyboard apparatus as an example, the present invention is not limited to this. That is, as long as it is a musical instrument having a structure in which a member having elasticity is supported by using a rib (wall-like or plate-like member), the present invention is also applicable to musical instruments other than the keyboard device.

  In addition, based on the configuration described as the embodiment of the present invention, those in which a person skilled in the art appropriately adds, deletes or changes the design of components or those in which steps are added, omitted or change conditions also As long as the gist of the present invention is included, it is included in the scope of the present invention.

  In addition, even if other effects or effects different from the effects brought about by the aspects of the embodiment described above are apparent from the description of the present specification, or those which can be easily predicted by those skilled in the art, it is natural. It is understood that the present invention provides the

  DESCRIPTION OF SYMBOLS 1 ... keyboard apparatus, 10 ... keyboard assembly, 70 ... sound source apparatus, 80 ... speaker, 90 ... housing | casing, 100 ... key, 120 ... hammer support part, 180 ... connection part, 181 ... flexible member, 181 ... plate shape Flexible member 185 flexible member 185 rod-like flexible member 200 hammer assembly 210 front end portion 212 contact member 212a bulging portion 212b support member 212c Movable contact, 213a, 213b: opening, 220: shaft support, 230: weight, 250: lower stopper, 260: upper stopper, 300: sensor, 400: circuit board, 400C: central circuit board, 400L: left side Circuit board, 400R: right circuit board, 402: positioning portion, 404, 406: opening portion, 410: integrated circuit, 420L: connector portion, 420R: connector portion, 500: surface Front end frame guide 513 side frame guide 520 rotation shaft 530 rear end support portion 532 boss 534 support portion 536 positioning portion 540 front end support portion 540C Front end support portion 540L: Front end support portion 540R: Front end support portion 542: Support portion 544: First positioning portion 546: Second positioning portion 550: First rib 552: Second rib 554, 556 556a: projection portion 585: frame side support portion 710: signal conversion portion 730: sound source portion 750: output portion

Claims (10)

A plurality of ribs arranged in the first direction and each having a projection;
A reaction force generating member having a plurality of openings aligned in the first direction;
A plurality of operators arranged in the first direction and in contact with the reaction force generating member in a movable range;
Including
The musical instrument, wherein the reaction force generating member is disposed straddling the plurality of ribs by inserting the projections into the plurality of openings.   The musical instrument according to claim 1, wherein the plurality of ribs include a first rib and a second rib having a smaller number of the protrusions than the first rib.   The plurality of openings constitute a first line constituted by the openings arranged in the first direction, and a second line constituted by a smaller number of openings than the first line. The musical instrument as described in 1 or 2. The plurality of ribs include a first rib located between adjacent first operators and a second rib located between adjacent first operators and second operators.
The first protrusions located on the first rib and the second rib constitute a first row aligned in the first direction, and a second protrusion located on a part of the first rib and the second rib The musical instrument according to claim 1, wherein the second row constitutes a second row aligned in the first direction. A plurality of the second ribs are disposed between the adjacent first ribs,
The musical instrument according to claim 4, wherein the plurality of second ribs include a rib having the second protrusion and a rib not having the second protrusion. The plurality of ribs includes a first set of ribs spaced apart by a first distance and a second set of ribs spaced apart by a second distance narrower than the first distance,
The musical instrument according to claim 1, wherein two ribs constituting the second set of ribs each have a different number of the protrusions.   The musical instrument according to claim 6, wherein the second distance is the narrowest distance among a plurality of distances formed by the plurality of ribs.   The said reaction force generation | occurrence | production member contains a support part and the bulging part supported by this support part, The said bulging part is located between two adjacent ribs in planar view. The musical instrument according to any one of the items.   The musical instrument according to claim 8, wherein the bulging portion overlaps with the two ribs when viewed from the first direction. The first direction is a scale direction,
The musical instrument according to any one of claims 1 to 9, wherein the operator includes a key or a member that transmits a force in conjunction with the key.

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