JP2020173293A - Keyboard device - Google Patents

Abstract

To provide a keyboard device capable of accurately detecting key press information.SOLUTION: A keyboard device comprises: a base member 50; a plurality of keys 60 which is supported by the base member 50 and arranged side by side in a scale direction; a substrate 91 which has contacts (fixed contact 92 and movable contact 94) for detecting key press information of a plurality of the keys 60 and is fixed to the base member 50; a vibrating body 72 which is fixed to at least one of the substrate 91 or the base member 50 and vibrates the substrate 91; and a signal output unit 140 which is configured to enable a signal for vibrating the vibrating body 72 to be output when no musical performance is made. Thereby, the substrate 91 is vibrated by the vibrating body 72 when no musical performance is made so that foreign substances adhered to the contacts of the substrate 91 can be removed. Thus, occurrence of deviation of conduction timing and conduction failure at the contact can be suppressed to enable the key press information at the key pressing time of the key 60 to be accurately detected.SELECTED DRAWING: Figure 2

Description

The present invention relates to a keyboard device, and more particularly to a keyboard device capable of accurately detecting key press information.

There is known a keyboard device that detects key press information by conducting contacts provided on a substrate when a key is pressed. For example, Patent Document 1 provides a technique in which a fixed contact provided on a substrate and a movable contact arranged to face the fixed contact are provided, and the movable contact is brought into contact with the fixed contact when a key is pressed to conduct the contact. Are listed. In this technique, three sets of contacts including a fixed contact and a movable contact are provided, and key pressing information (key pressing acceleration) is detected based on the time difference in which each of the three sets of contacts conducts.

Japanese Unexamined Patent Publication No. 2010-224127 (for example, paragraphs 0040, 0041, FIG. 2)

However, in the above-mentioned conventional technique, if foreign matter adheres to the contact, the contact may be conducted at a timing deviated from the normal stroke amount at the time of key pressing, or the contact may not be conducted. .. There is a problem that the key press information cannot be detected accurately due to the deviation of the conduction timing at the contact and the poor continuity.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a keyboard device capable of accurately detecting key press information.

In order to achieve this object, the keyboard device of the present invention has a base member, a plurality of keys supported by the base member and provided side by side in the scale direction, and a contact point for detecting key pressing information of the plurality of keys. A first configuration capable of outputting a substrate fixed to the base member, a vibrating body fixed to the substrate or at least one of the base members and vibrating the substrate, and a signal vibrating the vibrating body during non-performance. It is provided with an output means of.

It is a front perspective view of the keyboard device in 1st Embodiment. It is sectional drawing of the keyboard device in line II-II of FIG. It is a partially enlarged sectional view of the keyboard device which enlarged the part III of FIG. It is a bottom perspective view of a keyboard unit. (A) is a block diagram schematically showing the electrical configuration of the keyboard device, and (b) is a graph roughly showing the magnitude of key vibration felt by the performer when the acoustic piano or the keyboard device is pressed. Is. It is sectional drawing of the keyboard device in 2nd Embodiment. It is a partially enlarged bottom view of the keyboard device in the direction view of arrow VII of FIG. FIG. 6 is a partially enlarged cross-sectional view of a keyboard device in which the VIII-VIII portion of FIG. 6 is enlarged.

Hereinafter, preferred embodiments will be described with reference to the accompanying drawings. First, the overall configuration of the keyboard device 1 will be described with reference to FIG. FIG. 1 is a front perspective view of the keyboard device 1 according to the first embodiment. Note that FIG. 1 shows a state in which the keyboard unit 4 is removed from the keyboard table 3, and the keyboard lid that covers the upper surface side of the keyboard unit 4 when the keyboard unit 4 is arranged on the keyboard table 3 is not shown. ..

Further, the arrow U direction, the arrow D direction, the arrow F direction, the arrow B direction, the arrow L direction, and the arrow R direction in FIG. 1 are the upward direction, the downward direction, the forward direction, the rear direction, and the left direction of the keyboard device 1, respectively. It shows the right direction, and the same applies to FIGS. 3 and later.

As shown in FIG. 1, the keyboard device 1 includes a main body 2 and a keyboard table 3 projecting forward from the front surface (the surface on the F side of the arrow) at the center of the main body 2 in the vertical direction (arrow UD direction). , A keyboard unit 4 supported by the keyboard table 3, and a keyboard instrument (electronic piano) including the keyboard unit 4.

The main body 2 is a rectangular parallelepiped housing, and a speaker 20 is provided on the front surface of the main body 2. The speakers 20 are provided in pairs in the left-right direction (arrow LR direction) at predetermined intervals, and the keyboard table 3 is arranged above the pair of speakers 20.

The keyboard table 3 is formed with a concave space recessed downward for accommodating the keyboard unit 4, and a chassis 30 is provided on the bottom surface of the concave space. The chassis 30 is a metal plate-like body that is long in the left-right direction. Further, the operation panel 31 is arranged so as to cover the rear end (end on the arrow B side) side of the concave space of the keyboard table 3, and the operation panel 31 includes a power switch 32 that can be operated by the performer and cleaning. A start switch 33 and a display device 34 formed of an LED, a liquid crystal display, or the like for displaying various states are provided.

The power switch 32 is a switch for turning on / off the power device (not shown) of the keyboard device 1, and the cleaning start switch 33 is a fixed contact 92 provided on a substrate 91 (see FIG. 2) described later and a movable switch. This is a switch for starting cleaning of the contact 94.

The keyboard unit 4 includes a pair of support members 40 for fixing the keyboard unit 4 to the chassis 30, a resin base member 50 supported by the pair of support members 40, and a plurality of support members 50 supported by the base member 50. (In this embodiment, 88 keys) are provided, and a vibration transmission member 70 for transmitting the vibration of the vibrating body 72 (see FIG. 2) described later to the left and right is provided.

The support member 40 is a metal light channel steel (C-shaped steel having a U-shaped cross section), and is formed in a long shape that is long in the left-right direction (scale direction) in which the keys 60 are lined up. The "long shape" is a rod-shaped or tubular shape in which the horizontal dimension (length) is sufficiently (for example, 20 times or more) longer than the longitudinal dimension and the vertical dimension (thickness of the object). The same applies to the following description. The front end portion and the rear end portion of the base member 50 are fixed to the pair of support members 40, respectively, and a plurality of keys 60 are supported on the upper surface of the base member 50.

The keys 60 include a plurality of white keys 61 for playing the trunk sound (52 in the present embodiment), a plurality of black keys 62 for playing the derivative sound (36 in the present embodiment), and the like. The plurality of white keys 61 and black keys 62 are provided side by side in the left-right direction.

Next, the detailed configuration of the keyboard device 1 will be described with reference to FIGS. 2 and 3. FIG. 2 is a cross-sectional view of the keyboard device 1 in line II-II of FIG. 1, and FIG. 3 is a partially enlarged cross-sectional view of the keyboard device 1 in which the portion III of FIG. 2 is enlarged. In addition, in FIG. 2 and FIG. 3, a part of the keyboard device 1 is not shown in order to simplify the drawing.

As shown in FIG. 2, the keyboard device 1 is for detecting the key pressing information of the key 60 from the hammer 80 rotatably supported around the rotation axis 51 of the base member 50 and the rotational state of the hammer 80. A detection unit 90 is provided.

The white key 61 and the black key 62 are rotatably supported by the base member 50, a structure that guides the rotation of the white key 61, and a structure that guides the rotation of the white key 61 and the black key 62. The structure for rotating the hammer 80 to detect the key press information is substantially the same for both the white key 61 and the black key 62. Therefore, in the following, only the structure of the white key 61 will be described, and the description of the structure of the black key 62 will be omitted.

The rear end portion of the white key 61 is rotatably supported around the rotation axis 52 on the upper surface (the surface on the arrow U side) on the rear end (end on the arrow B side) side of the base member 50, and the white key 61 A projecting portion 61a projecting downward (arrow D side) is formed from the lower surface of the substantially central portion in the front-rear direction (arrow FB direction). The protruding portion 61a is a portion for transmitting the rotational force accompanying the rotation of the white key 61 to the hammer 80, and the protruding tip portion of the protruding portion 61a is brought into contact with the hammer 80.

The hammer 80 is a mass body (having a weight sufficient to give the feel of the key press) for imparting the feel of the key press when the white key 61 is pressed, and the contact between the hammer 80 and the protruding portion 61a. The hammer 80 is pivotally supported by the rotating shaft 51 located on the rear side of the portion. When the white key 61 is pressed, the protruding portion 61a of the white key 61 slides along the upper surface of the hammer 80, so that the hammer 80 rotates around the rotation axis 51. The reaction force associated with the rotation of the hammer 80 gives the performer the feel of pressing the white key 61 (key press feel). Further, when the white key 61 is pressed, the acceleration of rotation of the hammer 80 is detected by the detection unit 90, so that the key pressing information at the time of key pressing is detected.

As shown in FIG. 3, the detection unit 90 has a substrate 91 fixed to the lower surface (the surface on the arrow D side) of the base member 50 and a fixed contact formed on the upper surface (the surface on the arrow U side) of the substrate 91. A cover 93 having a space S for accommodating the fixed contact 92 and being fixed to the substrate 91 in a state of covering the fixed contact 92, and a movable contact 94 bonded to the inner surface of the cover 93 are provided. ..

The substrate 91 is provided so as to extend left and right (in the direction of arrow LR) over the arrangement area of each key 60, and a fixed contact 92 and a movable contact 94 are provided for each of the keys 60. That is, when the fixed contact 92 and the movable contact 94 are a set of contacts, the same number of contacts as the number of keys 60 are provided side by side. In the following description, a contact that is a set of a fixed contact 92 and a movable contact 94 will be abbreviated as "contact".

The substrate 91 is a printed circuit board formed by using a resin material or the like, and both ends of the substrate 91 before and after (in the direction of arrow FB) are fixed to the base member 50. That is, the substrate 91 is supported by the base member 50 with the front and back exposed, and the fixed contact 92 is formed on the surface (upper surface) of the substrate 91.

A plurality of fixed contacts 92 (three in the present embodiment) are provided side by side in the front-rear direction, and a plurality of (three in the present embodiment) protrusions facing each of the plurality of fixed contacts 92 cover 93. Formed inside. By adhering the movable contact 94, which is a conductor, to each of the plurality of protrusions, the fixed contact 92 and the movable contact 94 are arranged so as to face each other.

The cover 93 is formed in a dome shape using a rubber-like elastic body, and the cover 93 is arranged to face the lower surface on the front end side of the hammer 80. Therefore, when the white key 61 is pressed, the hammer 80 rotates to cause a hammer. The cover 93 is pushed downward by the 80. As a result, the cover 93 is elastically deformed so that the movable contact 94 is displaced toward the fixed contact 92 side, and the movable contact 94 comes into contact with the fixed contact 92.

Although not shown, a pair of fixed contacts 92 are arranged in the left-right direction (arrow LR direction) at predetermined intervals, and the movable contacts 94 are connected so as to connect between the pair of fixed contacts 92. The fixed contact 92 is conducted by the contact with the fixed contact 92. When the white key 61 is released from the conductive state, the movable contact 94 is separated from the fixed contact 92, so that the fixed contact 92 is in a non-conducting state.

A set of contacts is housed in the space S surrounded by the cover 93, and the spaces S adjacent to each other on the left and right are connected by a communication passage 95. A through hole 96 is formed in the substrate 91 at a position connected to the communication passage 95, and the opening portion (back surface of the substrate 91) of the through hole 96 is coated with a breathable non-woven fabric 97.

Since the through hole 96 connects the space S in the cover 93 to the outside, when the cover 93 is elastically deformed due to the key press, the air in the space S in the cover 93 is connected to the communication passage 95 and the through hole 96. And, it passes through the non-woven fabric 97 and flows out to the outside. Therefore, the cover 93 can be easily elastically deformed.

On the other hand, when the key is released, the space S in the cover 93 becomes a negative pressure due to the elastic recovery force of the cover 93, so that the outside air passes through the through hole 96 and flows into the space S in the cover 93. Therefore, there is a possibility that foreign matter may enter the space S in the cover 93 together with the air from the outside. On the other hand, in the present embodiment, since the opening portion of the through hole 96 is covered with the non-woven fabric 97, the non-woven fabric 97 can prevent foreign matter from entering the space S in the cover 93.

In this way, although foreign matter can be prevented from entering the space S in the cover 93 by the non-woven fabric 97, foreign matter enters the cover 93 when the detection unit 90 is assembled (for example, when the cover 93 is assembled on the substrate 91). It may enter the space S.

As described above, in the present embodiment, the key press information (note information) of the white key 61 is detected by the continuity / non-conduction of the fixed contact 92, and the musical tone signal based on the detection result is output to the outside, so that the key is fixed. If a foreign substance is caught between the contact 92 and the movable contact 94, it becomes difficult to accurately detect the key pressing information of the white key 61.

More specifically, compared to the actual stroke amount and speed of the pressed white key 61, the musical sound generated is larger (smaller) due to the timing of conduction at the contact being shifted or conduction failure occurring. It may become or not pronounced. On the other hand, in the present embodiment, the vibrating body 72 vibrates the substrate 91 so that the contacts can be cleaned (foreign matter is removed). This configuration will be described with reference to FIGS. 2 to 4. FIG. 4 is a bottom perspective view of the keyboard unit 4.

As shown in FIG. 4, a plurality of base members 50 (8 in the present embodiment) are provided side by side in the left-right direction (arrow LR direction). Of the plurality of base members 50, the other seven base members excluding the base member 50 (supporting three white keys 61 and one black key 62) located on the highest treble side (arrow R side). 50 supports one octave of key 60.

The plurality of base members 50 are connected by a pair of support members 40 and a vibration transmission member 70, respectively, and the vibration transmission member 70 is a member for transmitting the vibration of the vibrating body 72 to the left and right. The vibration transmission member 70 extends from the bass side end of the base member 50 located on the lowest bass side (arrow L side) to the treble end of the base member 50 located on the treble side (along the left-right direction). It is fixed to the base member 50. That is, the vibration transmission member 70 is provided in a state of being in contact with all of the plurality of base members 50.

The vibration transmission member 70 is a light channel steel made of metal, and is formed in a long shape that is long in the left-right direction. Two vibrating bodies 72 are fixed to the vibration transmitting member 70 via the plate 71. The vibrating body 72 includes a magnetic circuit, a voice coil, and the like, and is, for example, a driving device for vibrating the diaphragm of a speaker. Since a known configuration can be adopted, detailed description thereof will be omitted.

In the following description, of the two vibrating bodies 72, the vibrating body 72 arranged on the treble side is referred to as the first vibrating body 72a, and the vibrating body 72 arranged on the bass side is referred to as the second vibrating body 72b. Define and explain.

The plate 71 is a metal plate-like body whose left-right direction dimension is shorter than that of the vibration transmission member 70 and whose front-rear direction (arrow FB direction) dimension is shorter than that of the base member 50. The rear end portion of the plate 71 is fixed to the lower surface of the vibration transmission member 70 (the surface on the arrow D side), and the first vibration is generated on the upper surface (the surface on the arrow U side) of the plate 71 protruding forward from the vibration transmission member 70. The body 72a and the second vibrating body 72b are fixed.

The first vibrating body 72a and the second vibrating body 72b are for cleaning the contacts by vibrating the substrate 91 (see FIGS. 2 and 3) when not playing. On the other hand, the second vibrating body 72b is for cleaning the contacts while vibrating the key 60 and the substrate 91 at the time of playing and applying the vibration at the time of pressing the key to the performer. First, cleaning of contacts during non-performance will be described.

The first vibrating body 72a and the second vibrating body 72b are configured to vibrate for a predetermined time by, for example, operating the cleaning start switch 33 (see FIG. 1) when the performer is not playing. Therefore, when the performer operates the cleaning start switch 33, the first vibrating body 72a and the second vibrating body 72b can be vibrated to remove foreign matter on the contacts. Specifically, when the first vibrating body 72a and the second vibrating body 72b vibrate, the vibration is transmitted to the vibration transmitting member 70 via the plate 71.

Since the vibration transmission member 70 connects a plurality of base members 50 arranged side by side, the vibrations of the first vibrating body 72a and the second vibrating body 72b are arranged side by side via the vibration transmitting member 70. It is transmitted to the base member 50. As a result, the substrate 91 (see FIGS. 2 and 3) supported by the base member 50 can be vibrated, and the vibration can remove foreign matter on the contacts of the substrate 91.

As described above, according to the present embodiment, the first vibrating body 72a and the second vibrating body 72b are fixed to the base member 50 (the one on which the substrate 91 is supported), and the cleaning start switch 33 (see FIG. 1). The first vibrating body 72a and the second vibrating body 72b can be vibrated at the time of non-playing by operating. As a result, the substrate 91 can be vibrated by the first vibrating body 72a and the second vibrating body 72b during non-performance, and foreign matter on the contacts of the substrate 91 can be removed. Therefore, it is possible to suppress the occurrence of a deviation in the timing of conduction at the contact point and a poor continuity, so that it is possible to accurately detect the key pressing information at the time of pressing the key 60 and accurately generate a musical tone for the key pressing. Further, when the performer feels uncomfortable with the musical sound generated during the performance, the performer can operate the cleaning start switch 33 to remove the foreign matter on the contact point. That is, the performer can clean the contacts at a timing as needed.

Further, since the first vibrating body 72a and the second vibrating body 72b are fixed to the vibration transmitting member 70 and the vibration transmitting member 70 is in contact with the base members 50 arranged side by side, the first vibrating body 72a And the vibration of the second vibrating body 72b can be transmitted to each base member 50 via the vibration transmitting member 70. Since the metal vibration transmitting member 70 has higher rigidity than the resin base member 50, the vibrations of the first vibrating body 72a and the second vibrating body 72b are easily transmitted in the left-right direction through the vibration transmitting member 70. ..

Therefore, the vibrations of the first vibrating body 72a and the second vibrating body 72b are efficiently transmitted to the substrate 91 as compared with the case where the first vibrating body 72a and the second vibrating body 72b are directly fixed to the base member 50. be able to. That is, since it is possible to easily transmit the vibration to the contacts arranged at positions separated from the first vibrating body 72a and the second vibrating body 72b in the left-right direction, it is possible to easily remove the foreign matter of the contacts.

Further, since the vibration transmission member 70 connects the base members 50 arranged side by side, the substrate 91 supported by the base members 50 even when the base members 50 are separately formed. The vibrations of the first vibrating body 72a and the second vibrating body 72b can be transmitted at once (almost at the same time). Further, in addition to the function of transmitting vibration to each base member 50 (board 91), the function of connecting a plurality of base members 50 to each other can be shared by the vibration transmission member 70, so that the number of parts can be reduced. ..

Here, if the purpose is simply to facilitate transmission of vibration by a member having a higher rigidity than the base member 50, the vibration transmission member 70 has a plate shape (for example, the dimension in the front-rear direction is shorter than that of the base member 50). It is also possible to form a plate shape having a size that can be fixed to the base member 50). However, in such a configuration, the plate-shaped vibration transmitting member 70 vibrates like the diaphragm of a speaker due to the vibration of the first vibrating body 72a and the second vibrating body 72b, and an audible sound is generated, which becomes noise. There is a risk.

On the other hand, in the present embodiment, each of the vertical dimension and the front-back direction dimension of the vibration transmission member 70 is set to be smaller than the base member 50, and the vibration transmission member 70 has a long shape (cross-sectional U-shape It is formed in the shape of a C) rod. As a result, it is possible to suppress the vibration transmitting member 70 from vibrating like a diaphragm due to the vibration of the first vibrating body 72a and the second vibrating body 72b to generate an audible sound, so that noise is generated when cleaning the contacts. Can be suppressed.

As described above, the vibration of the vibrating body 72 (the first vibrating body 72a and the second vibrating body 72b) is transmitted to the base members 50 arranged side by side via the vibration transmitting member 70, but in the present embodiment. The vibration transmitted to the base member 50 is efficiently transmitted to the substrate 91, and foreign matter on the contacts can be easily removed. This configuration will be described by returning to FIGS. 2 and 3. The fixed structure of the first vibrating body 72a and the second vibrating body 72b with respect to the base member 50 is the same as that of the first vibrating body 72a and the second vibrating body 72b, except that the fixing positions in the left-right direction are different. Both are substantially the same. Therefore, only the fixed structure of the first vibrating body 72a will be described.

As shown in FIG. 2, the base member 50 is fixed so as to be bridged between a pair of support members 40 which are separated from each other by a predetermined distance in the front-rear direction. That is, each of the front end side and the rear end side of the base member 50 is fixed to the chassis 30 via the support member 40, and the chassis 30 and the base member 50 are not in the region between the pair of support members 40. They are placed in contact (up and down at predetermined intervals). Therefore, when the vibration is transmitted to the base member 50, the substantially central portion of the base member 50 in the front-rear direction becomes the antinode of the vibration, and the amplitude of the vibration tends to be maximized at the substantially central portion of the base member 50 in the front-rear direction.

In the present embodiment, the vibration transmission member 70 is fixed to the lower surface of the base member 50 substantially in the center in the front-rear direction, and the vibration transmission member 70 and the first vibrating body 72a (plate 71) are arranged in a non-contact state with the chassis 30. To. As a result, the vibration from the first vibrating body 72a can be transmitted to the portion that becomes the antinode of the vibration of the base member 50, so that the base member 50 itself easily vibrates due to the vibration (the vibration of the first vibrating body 72a is generated). It can be amplified at the belly portion of the base member 50). Therefore, the vibration of the first vibrating body 72a can be efficiently transmitted to the substrate 91.

The "substantially center in the front-rear direction" of the base member 50 is within a predetermined region in the front-rear direction from the center in the front-rear direction of the base member 50 (for example, within a region 25% of the dimension in the front-rear direction of the base member 50). If the vibration transmitting member 70 is arranged in the region, the base member 50 itself can be easily vibrated by the vibration of the first vibrating body 72a.

Further, since the vibration transmission member 70 and the first vibrating body 72a (plate 71) are arranged in a non-contact state with the chassis 30, the vibration of the first vibrating body 72a is transmitted to the plate-shaped chassis 30. Can be suppressed. As a result, it is possible to suppress that the vibration of the first vibrating body 72a is dispersed to the chassis 30 side and that the plate-shaped chassis 30 vibrates like the diaphragm of the speaker due to the vibration of the first vibrating body 72a. .. Therefore, for example, the vibration of the first vibrating body 72a can be efficiently transmitted to the substrate 91 as compared with the case where the vibration transmitting member 70 or the first vibrating body 72a (plate 71) is provided in contact with the chassis 30. It is possible to suppress the generation of noise due to the vibration of the chassis 30.

Further, the base member 50 is fixed to the chassis 30 (support member 40) without the intervention of a vibration-proof member (for example, a rubber-like elastic body). As a result, the front and rear ends of the base member 50, which serve as vibration nodes, can be firmly fixed to the chassis 30. Therefore, by providing the vibration transmission member 70 at the center in the front-rear direction (the part that becomes the antinode of vibration) of the base member 50, which has relatively lower rigidity than the parts on both front and rear ends that are firmly fixed to the chassis 30, the base member The 50 itself can be vibrated more effectively. Therefore, the vibration of the first vibrating body 72a can be efficiently transmitted to the substrate 91.

Further, since each of the vibration transmission member 70 and the substrate 91 is fixed to the substantially central portion in the front-rear direction of the base member 50, the substrate 91 is also vibrated by the vibration amplified in the portion that becomes the antinode of the vibration of the base member 50. It can be made easier.

In this way, if the vibration from the first vibrating body 72a can be efficiently transmitted to the substrate 91 via the vibration transmitting member 70 and the base member 50 (making the substrate 91 easy to vibrate), it is on the contact point of the substrate 91. It is possible to easily remove foreign matter.

As shown in FIG. 3, the substrate 91 is arranged so as to be inclined with respect to the horizontal direction in a used state (a state in which the performance is performed by pressing the key 60) in which the keyboard device 1 is placed on the floor surface. That is, since the substrate 91 is arranged so as to be inclined downward toward the front side, foreign matter removed from the contacts by the vibration of the substrate 91 can be easily shaken off along the inclination of the substrate 91 (downward). Therefore, foreign matter on the contacts can be effectively removed.

Further, of the three fixed contacts 92 arranged in the front-rear direction, a gap is formed between the fixed contact 92 located at the lowermost end side (front end side) in the inclination direction of the substrate 91 and the inner surface 93a on the lower end side of the cover 93. ing. As a result, the foreign matter shaken off along the inclination of the substrate 91 can be received in the gap between the inner surface 93a of the cover 93 and the fixed contact 92. Therefore, it is possible to prevent foreign matter removed from the other fixed contact 92 or the movable contact 94 from adhering to the fixed contact 92 on the lower end side.

Next, with reference to FIGS. 4 and 5, a configuration will be described in which the contacts are cleaned while giving the performer the vibration at the time of pressing the key during the performance. FIG. 5A is a block diagram schematically showing the electrical configuration of the keyboard device 1, and FIG. 5B is the magnitude of key vibration felt by the player when the acoustic piano or the keyboard device 1 is pressed. It is a graph which shows roughly.

As shown in FIG. 5A, the keyboard device 1 includes a sound source device 100 that generates a musical tone signal based on the key press information detected by the detection unit 90 of the keyboard unit 4. The key press information detected by the detection unit 90 includes information on the speed (acceleration) when the key 60 (see FIG. 4) is pressed, and the faster the speed, the more generated by the sound source device 100. It is configured so that the level of the music signal is increased.

The music signal output from the sound source device 100 is output to the speaker 20 via the amplifier 110, while the music signal output from the sound source device 100 is output to the second vibrating body 72b via the signal processing unit 120 and the amplifier 130. Is also output.

That is, the second vibrating body 72b is configured to vibrate also by the musical sound signal output from the sound source device 100. Since the musical tone signal output by the sound source device 100 is a signal with a fundamental frequency corresponding to the sound name of the key 60 pressed, the closer the key 60 is pressed to the bass side, the lower the frequency signal becomes. The higher the treble side of the pressed key 60, the higher the frequency of the signal. The fundamental frequency is the frequency of the fundamental tone corresponding to the note name of the key 60.

The signal processing unit 120 is a signal processing device such as an electronic circuit or DSP for processing a music signal output from the sound source device 100, and includes a low-pass filter for attenuating the music signal output from the sound source device 100. ..

When the fundamental frequency of the musical tone signal output from the sound source device 100 is less than a predetermined value (less than 440 Hz in the present embodiment), the signal processing unit 120 does not attenuate the level of the musical tone signal and does not attenuate the level of the musical tone signal. When the fundamental frequency of the musical tone signal output from the sound source device 100 is equal to or higher than a predetermined frequency (440 Hz or higher in this embodiment) while outputting to the vibrating body 72b) of 2, the level of the musical tone signal is attenuated. Output to the amplifier 130 (second vibrating body 72b).

Therefore, when the pressed key 60 has a lower tone than a predetermined pitch (corresponding to a note name less than 440 Hz), the second vibrating body 72b is vibrated based on the musical tone signal output from the sound source device 100. On the other hand, when the pressed key 60 has a predetermined or higher pitch (corresponding to a note name of 440 Hz or higher), it is possible to suppress the vibration of the second vibrating body 72b. This has the effect of making the playing feel of an acoustic piano closer to that of an acoustic piano, and this effect will be described with reference to FIG. 5 (b).

Note that FIG. 5B is a plot of the magnitude of key vibration felt when a key is pressed for each key, the vertical axis represents the magnitude of key vibration felt by the performer, and the horizontal axis is key pressed. The fundamental frequency (Hz) corresponding to the sound name of the key 60 is shown. The graph shown by the broken line in FIG. 5B shows the magnitude of the key vibration felt by the performer when the key of the acoustic piano is pressed, and the graph shown by the solid line shows the key 60 of the keyboard device 1. It shows the magnitude of the key vibration felt by the performer when the key is pressed.

As shown by the broken line in FIG. 5B, when the acoustic piano key is pressed alone, when the bass side key is pressed, the vibration felt at the time of pressing becomes large, and the treble side key is pressed. When this is done, the vibration felt when the key is pressed becomes smaller (almost eliminated).

More specifically, when a key corresponding to a sound name (C1 to E3) of 32 Hz or more and less than 165 Hz is pressed, a relatively strong vibration is felt, and a sound name of 165 Hz or more and less than 350 Hz (F3 to F4) is felt. When the key corresponding to) is pressed, a slightly weaker and moderate vibration is felt as compared with the case where the key corresponding to the sound name whose fundamental frequency is 32 Hz or more and less than 165 Hz is pressed.

That is, the vibration felt by the performer when the key of the acoustic piano is pressed has a peak in the range where the fundamental frequency is 32 Hz or more and less than 165 Hz, and the key on the treble side of the range is pressed. The vibration you feel is reduced. On the other hand, the vibration felt gradually (proportionally) becomes smaller as the pressed key moves to the treble side, but the note names (F # 4 to G # 4) whose fundamental frequency is 350 Hz or more and less than 440 Hz. The vibration felt when the key is pressed is sharply reduced with the key corresponding to the key, and the vibration felt when the key is pressed becomes almost zero when the key corresponds to the note name (A4 or higher) having a fundamental frequency of 440 Hz or higher.

On the other hand, in the present embodiment, the second vibrating body 72b (plate 71) is attached to the vibration transmitting member 70 in the region where the key 60 corresponding to the sound name (A1 to C2) whose fundamental frequency is 55 Hz or more and less than 66 Hz is arranged. Is fixed (see FIG. 4), and when the fundamental frequency of the musical tone signal output from the sound source device 100 is 440 Hz or higher, that is, the key 60 corresponding to the sound name (A4 or higher) whose fundamental frequency is 440 Hz or higher is pressed. If so, it is configured to suppress the vibration of the second vibrating body 72b.

As a result, when the key 60 corresponding to the note name having a fundamental frequency of less than 440 Hz is pressed, the pressed key 60 can be vibrated relatively large, while the sound having a fundamental frequency of 440 Hz or more is vibrated. When the key 60 corresponding to the name is pressed, the vibration felt by the performer can be made almost zero. Therefore, it is possible to approach the playing feeling of an acoustic piano.

Further, when the key 60 corresponding to the note name of less than 440 Hz and the key 60 corresponding to the note name of 440 Hz or higher are pressed at the same time, it is based on the key pressed of the key 60 corresponding to the note name of less than 440 Hz. The second vibrating body 72b vibrates with a musical tone signal (that is, at a fundamental frequency less than 440 Hz). In this case, the vibration transmitted to the left and right along the vibration transmission member 70 is less likely to be attenuated as the fundamental frequency is lower. Therefore, the vibration of the second vibrating body 72b at a fundamental frequency of less than 440 Hz is in the high frequency range of 440 Hz or higher. It is transmitted to the key 60 of the above via the vibration transmission member 70.

That is, the vibration transmission member 70 has a range from the bass side (for example, the area where the key 60 is arranged corresponding to the sound name less than 32 Hz (B0 or less)) to the treble side (for example, the sound name (C6 or more) of 1000 Hz or more). Since it is fixed (contacted) to the base member 50 over the arrangement area of the key 60 corresponding to the above, when the bass side key 60 and the treble side key 60 are pressed at the same time, the bass side key 60 is pressed. The vibration of the second vibrating body 72b based on the key pressed of 60 can be transmitted to the key 60 on the treble side via the vibration transmitting member 70. Therefore, since both hands of the performer can feel the vibration, it is possible to get closer to the playing feeling of the acoustic piano.

Further, the second vibrating body 72b (plate 71) is fixed to the vibration transmitting member 70 within the arrangement region of the key 60 corresponding to the sound name whose fundamental frequency is 55 Hz or more and less than 66 Hz (vibration transmitting member 70 and plate 71). The second vibrating body 72b can be placed in the region on the bass side where the most vibration is felt in the acoustic piano, and the key 60 arranged in that region can be vibrated efficiently. .. That is, since the vibration at the time of pressing the key of the acoustic piano can be simulated by the vibration of one second vibrating body 72b, the product cost can be reduced.

Here, when the key 60 on the treble side (for example, corresponding to a sound name of 440 Hz or higher) is pressed alone, vibration is less likely to be felt, and the key 60 on the low sound side (for example, corresponding to a sound name of less than 440 Hz) is supported. ) As a method of making the treble side key 60 feel vibration when the key 60 and the treble side key 60 are pressed at the same time, a signal generator different from the sound source device 100 is used for the second vibrating body 72b. It is also possible to output a signal for vibrating the second vibrating body 72b from the signal generation unit only when the key 60 on the bass side is pressed (ignoring the key 60 on the treble side). .. However, in such a configuration, it is necessary to provide a means for determining whether the key 60 on the bass side or the treble side is pressed, and the sound source device 100 is a signal generation unit for the second vibrating body 72b. It is necessary to provide it separately, which increases the product cost of the keyboard device 1.

On the other hand, in the present embodiment, since the second vibrating body 72b is vibrated by using the sound source device 100 (the one that outputs the musical sound signal for emitting sound by the speaker 20), the sound source device 100 and Can eliminate the need to provide a separate signal generator for the second vibrating body 72b. Further, by utilizing the fact that the fundamental frequency of the signal output from the sound source device 100 is different for each sound name of the key 60, only by providing a low-pass filter in the signal processing unit 120, the key 60 on the treble side can be used. It is possible to prevent the second vibrating body 72b from vibrating when the key is pressed. That is, it is possible to eliminate the need for a means for determining whether the key 60 on the bass side or the treble side is pressed. Therefore, the product cost of the keyboard device 1 can be reduced.

As described above, in the present embodiment, the performer can be given the vibration at the time of key pressing by vibrating the second vibrating body 72b at the time of playing (at the time of pressing the key). Further, since the substrate 91 (see FIG. 3) can also be vibrated by the vibration of the second vibrating body 72b during the performance, the contacts can be cleaned at the same time as the performance. On the other hand, when the key 60 on the treble side is pressed, the vibration of the vibrating body of the second vibrating body 72b is suppressed, so that foreign matter at the contact point is removed during the performance in the arrangement region of the key 60 on the treble side. It's getting harder.

On the other hand, in the present embodiment, the first vibrating body 72a (see FIG. 4) is arranged in the arrangement region of the key 60 corresponding to the sound range where the fundamental frequency is 440 Hz or more. More specifically, in the region where the key 60 corresponding to the note name (B5 to D6) having a fundamental frequency of 980 Hz or more and less than 1175 Hz is arranged, the first vibrating body 72a (plate 71) is fixed to the vibration transmitting member 70. Will be done. As a result, by vibrating the first vibrating body 72a during non-performance, the substrate 91 can be vibrated in the arrangement region of the key 60 on the treble side. Therefore, foreign matter that could not be removed during performance at the contacts located on the treble side can be removed by the vibration of the first vibrating body 72a during non-performance.

That is, during performance, the vibration of the second vibrating body 72b can remove foreign matter on the contacts located on the bass side while simulating the vibration when the acoustic piano is pressed. On the other hand, when not playing, the vibrations of the first vibrating body 72a and the second vibrating body 72b can remove foreign substances that could not be removed at the time of playing at the (all) contacts located on the bass side and the treble side. ..

In this case, the contact located on the bass side can be generally cleaned by the vibration of the second vibrating body 72b during performance, so that the second vibrating body 72b is not vibrated when the contact is cleaned during non-playing. However, in the present embodiment, both the first vibrating body 72a and the second vibrating body 72b are vibrated when the contacts are cleaned during non-playing. As a result, even if there is a foreign substance that could not be removed during performance at the contact position located on the bass side, the foreign substance can be reliably removed during non-performance.

Such vibration (cleaning of contacts) of the first vibrating body 72a and the second vibrating body 72b during non-performance can be started by operating the cleaning start switch 33 as described above. On the other hand, in the present embodiment, the cleaning of the contacts is started even when the power of the keyboard device 1 is turned on.

As shown in FIG. 5A, the keyboard unit 4 outputs a signal to each of the first vibrating body 72a and the second vibrating body 72b based on the operation of the power switch 32 and the cleaning start switch 33. The unit 140 is provided. The signal output unit 140 of the first vibrating body 72a and the second vibrating body 72b is based on the power of the keyboard device 1 being turned on by the power switch 32 or the cleaning start switch 33 being operated. It is a signal processing device that outputs a signal that vibrates each of them for a predetermined time (for example, several seconds).

As a result, when the first vibrating body 72a and the second vibrating body 72b are vibrated based on the operation of the power switch 32 (power on), the contacts are cleaned by using the start-up time of the keyboard device 1. be able to. As a result, it is possible to prevent the performer from feeling uncomfortable waiting for the contacts to be cleaned, and it is also possible to prevent the performer from starting the performance with foreign matter adhering to the contacts. Further, when the performer feels uncomfortable with the musical sound generated during the performance, the performer can operate the cleaning start switch 33 to clean the contacts at a necessary timing.

Although not shown, the display device 34 (see FIG. 1) notifies that the contacts are being cleaned while the contacts are being cleaned by the first vibrating body 72a and the second vibrating body 72b. (For example, characters such as "contact cleaning in progress" are displayed). As a result, it is possible to prevent the performer from feeling uncomfortable waiting for the contacts to be cleaned. In particular, by performing such notification (cleaning of contacts) during the activation time of the keyboard device 1, it is possible to prevent the performer from feeling uncomfortable waiting for the activation of the keyboard device 1. That is, it is possible to make the performer recognize the time that was conventionally merely waiting for the activation as meaningful.

Further, the amplitude of the vibration of the first vibrating body 72a and the second vibrating body 72b based on the signal from the signal output unit 140 is set to be larger than the vibration of the second vibrating body 72b based on the signal from the sound source device 100. Has been done. As a result, foreign matter that could not be removed by the vibration of the second vibrating body 72b during performance can be reliably removed by the large vibration of the first vibrating body 72a and the second vibrating body 72b during non-playing.

In this case, since the vibration (amplitude) of the first vibrating body 72a and the second vibrating body 72b based on the signal output from the signal output unit 140 is relatively large, for example, the first vibrating body 72a at a frequency within the audible range. When the vibrating body 72a and the second vibrating body 72b are vibrated, noise is likely to occur during cleaning of the contacts.

On the other hand, in the present embodiment, the signal output unit 140 vibrates the first vibrating body 72a and the second vibrating body 72b at a frequency outside the audible range, so that the first vibrating body 72a and the second vibrating body 72a and the second vibrating body 72b are vibrated. Even when the vibration (amplitude) of 72b is relatively large, it is possible to suppress the generation of noise due to the vibration.

The frequency outside the audible range is a frequency of less than 20 Hz or 20000 Hz or more, but in the present embodiment, the first vibrating body 72a and the second vibrating body 72b are based on the signal from the signal output unit 140. Is configured to oscillate at frequencies below 20 Hz. As a result, the energy (power consumption) for vibrating the first vibrating body 72a and the second vibrating body 72b can be reduced. Further, since the vibrations of the first vibrating body 72a and the second vibrating body 72b are less likely to be damped when transmitting the vibration transmitting member 70 and the base member 50, foreign matter on the contacts can be easily removed.

Next, the second embodiment will be described with reference to FIGS. 6 to 8. In the first embodiment, the case where the first vibrating body 72a and the second vibrating body 72b are fixed to the base member 50 (vibration transmitting member 70) has been described, but in the second embodiment, the vibrating body 91 is fixed to the vibrating body 91. The case where the 272 is fixed will be described. The same parts as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 6 is a cross-sectional view of the keyboard device 201 according to the second embodiment, and FIG. 7 is a partially enlarged bottom view of the keyboard device 201 in the direction of arrow VII of FIG. FIG. 8 is a partially enlarged cross-sectional view of the keyboard device 201 in which the VIII-VIII portion of FIG. 6 is enlarged.

As shown in FIG. 6, the keyboard device 201 of the second embodiment includes one vibrating body 272 fixed to the back surface (lower surface) of the substrate 91 via a vibration transmitting member 273. The vibrating body 272 includes a magnetic circuit, a voice coil, and the like, and is, for example, a driving device for vibrating the diaphragm of the speaker. Since a known configuration can be adopted, detailed description thereof will be omitted. By directly fixing the vibrating body 272 to the substrate 91 in this way, as compared with the first embodiment in which the vibrating body is fixed to the base member 50, foreign matter at the contact point can be effectively removed by the vibration of the vibrating body 272.

The vibrating body 272 is configured to vibrate based on when the key 60 is pressed and when the cleaning start switch 33 (see FIG. 1) is operated. As a result, it is possible to clean the contacts on the substrate 91 while applying the vibration at the time of pressing the key to the performer by the vibrating body 272 during the performance.

Further, even during non-performance, the contacts can be cleaned by operating the cleaning start switch 33. Since the amplitude of the vibration of the vibrating body 272 when the cleaning start switch 33 is operated is set to be larger than the vibration when the key is pressed, foreign matter that could not be completely removed during the performance must be reliably removed. Can be done.

The vibration of the vibrating body 272 at the time of key pressing is always at a constant frequency regardless of the note name of the pressed key 60.

As shown in FIG. 7, a plurality of (three in the present embodiment) substrates 91 are provided side by side in the left-right direction (arrow LR direction), and one substrate is vibrated so as to connect the plurality of substrates 91. The transmission member 273 is fixed. The vibration transmission member 273 is a metal plate-like body that is long to the left and right.

The vibration transmission member 273 extends from the low-pitched end of the substrate 91 located on the lowest bass side (arrow L side) to the high-pitched end of the substrate 91 located on the highest treble side (arrow R side) (in the left-right direction). (Along) fixed to the substrate 91. That is, the vibration transmission member 273 is provided in a state of being in contact with all of the plurality of substrates 91.

One vibrating body 272 is arranged substantially in the center of the vibration transmitting member 273 (arrangement area of each key 60) in the left-right direction. The substantially center in the left-right direction is an arrangement area of the key 60 corresponding to a note name having a fundamental frequency of 220 Hz or more and less than 524 Hz.

Since the vibrating body 272 is fixed to each substrate 91 via the vibration transmitting member 273 and the vibration transmitting member 273 is fixed to each substrate 91 arranged side by side, the vibration of the vibrating body 272 causes the vibration transmitting member 273. It is transmitted to each substrate 91 via. Since the metal vibration transmission member 273 has higher rigidity than the resin substrate 91, the vibration of the vibrating body 272 can be efficiently transmitted to each substrate 91 via the vibration transmission member 273. Therefore, foreign matter on the contacts of each substrate 91 can be easily removed by the vibration of the vibrating body 272.

Further, since the vibration transmission member 273 is fixed to each of the substrates 91, the plurality of substrates 91 are integrally connected by the vibration transmission member 273. As a result, it is possible to prevent the relative positions of the substrates 91 and the vibration transmitting member 273 from being displaced (away from the contact state) due to the vibration of the vibrating body 272. Therefore, the vibration of the vibrating body 272 can be efficiently transmitted to the boards 91 arranged side by side, and foreign matter on the contacts of the boards 91 can be easily removed. Further, since the vibration of one vibrating body 272 can be transmitted to a plurality of substrates 91 (contacts), the number of vibrating bodies 272 can be reduced and the product cost can be reduced.

As shown in FIG. 8, the substrate 91 is fixed to the base member 50 at two points separated from each other in the front-rear direction (direction of arrow FB), and a contact point is arranged between the two fixed positions, so that the substrate 91 is pushed. When the movable contact 94 is pushed toward the fixed contact 92 by the rotation of the hammer 80 at the time of keying, the substrate 91 may bend. On the other hand, in the present embodiment, since the metal vibration transmission member 273 is fixed to the substrate 91, the vibration transmission member 273 can prevent the substrate 91 from bending when the key is pressed. As a result, the amount of rotation of the hammer 80 (the amount of the stroke of the key press) can be accurately detected at the contact point, so that the key press information can be detected accurately.

Since the movable contact 94 comes into contact with the fixed contact 92 due to the rotation of the hammer 80 at the time of key pressing, the key 60 (see FIG. 6) at the time of key pressing contacts the substrate 91 via the hammer 80 and the contact. At this time, since the vibrating body 272 vibrates with the key pressing, the vibration is transmitted to the key 60 via the contact and the hammer 80. As a result, the vibrating body 272 applies the vibration of the key 60 during performance to the performer, and the contact (contact of the key 60 that has not been pressed) can be cleaned by the vibration.

Further, the vibration transmission member 273 is fixed to the back surface of the substrate 91 (the lower surface opposite to the surface on which the contacts are arranged), and a part of the fixed contact 92 and a part of the vibration transmission member 273 in the thickness direction of the substrate 91. Are arranged so that they overlap. As a result, the vibration of the vibrating body 272 transmitted via the vibration transmitting member 273 can be easily transmitted to the contact arrangement portion on the substrate 91. Therefore, foreign matter on the contacts can be effectively removed.

In particular, in the present embodiment, among the plurality (three) fixed contacts 92 arranged in the front-rear direction, the fixed contact 92 located on the lowermost side and the vibration transmission member 273 are arranged so as to overlap each other in the thickness direction of the substrate 91. Therefore, foreign matter on the fixed contact 92 can be effectively removed.

That is, the substrate 91 is arranged so as to be inclined downward toward the front side in the used state, and a plurality of fixed contacts 92 are arranged side by side on the inclined substrate 91, so that the substrate 91 is located on the lowermost side. Foreign matter removed from the other fixed contact 92 or movable contact 94 is likely to adhere to the contact 92 again. On the other hand, by arranging the lowermost fixed contact 92 and the vibration transmitting member 273 so as to overlap each other in the thickness direction of the substrate 91, it is possible to prevent foreign matter from staying on the fixed contact 92.

Although the description has been made based on the above-described embodiment, the present invention is not limited to the above-described embodiment, and it is easily inferred that various improvements and modifications can be made without departing from the spirit of the present invention. It can be done.

In each of the above embodiments, the case where the keyboard device 1 is configured as an electronic piano has been described, but the present invention is not necessarily limited to this. For example, the technical idea of each of the above embodiments can be applied to other electronic musical instruments (for example, electronic organs).

In each of the above embodiments, the case where the keyboard device 1 includes 88 keys 60 has been described, but the present invention is not necessarily limited to this. For example, the keyboard device 1 may be a small electronic piano having less than 88 keys 60.

In each of the above embodiments, the case where both front and rear ends (two points) of the base member 50 are fixed to the chassis 30 has been described, but the present invention is not necessarily limited to this. For example, the fixing position of the base member 50 with respect to the chassis 30 may be one place (a configuration in which the entire base member 50 is in contact with the chassis 30), or three or more places. If there are at least two fixing positions of the base member 50 with respect to the chassis 30, the vibration transmission member 70 and the substrate 91 are fixed in the region between the fixing points (the part that becomes the vibration antinode of the base member 50). Is preferable. As a result, the key 60 and the substrate 91 can be easily vibrated by the vibration of the vibrating bodies 72 and 272.

In each of the above embodiments, the case where the vibrating bodies 72 and 272 are fixed to the base member 50 and the substrate 91 via the vibration transmitting members 70 and 273 has been described, but the present invention is not necessarily limited to this. For example, the vibration transmitting members 70 and 273 may be omitted, and the vibrating bodies 72 and 272 may be directly fixed to the base member 50 or the substrate 91.

In each of the above embodiments, the case where the vibration transmitting members 70 and 273 are made of metal has been described, but the present invention is not necessarily limited to this. For example, a material other than metal as long as it is at least more rigid than the base member 50 and the substrate 91 (for example, a resin material having a rigidity higher than that of the base member 50 and the substrate 91, or a resin material insert-molded with a metal material). ) May be used to form the vibration transmitting members 70 and 273.

In each of the above embodiments, cases where the vibration transmitting members 70 and 273 are formed in a U-shape (C-shape) having a long cross section in the left-right direction or a plate shape have been described, but the present invention is not necessarily limited to this. For example, the vibration transmitting members 70 and 273 may be formed in a prism or a columnar shape, or the vibration transmitting member 70 may be formed in a solid or hollow shape.

In each of the above embodiments, the case where the vibration transmitting members 70 and 273 are formed in a straight line along the left-right direction has been described, but the present invention is not necessarily limited to this. For example, the shapes of the vibration transmission members 70 and 273 are not limited as long as the vibration transmission members 70 and 273 are in contact with the base member 50 and the substrate 91 over the arrangement regions of the plurality of keys 60. Therefore, for example, a part of the vibration transmitting members 70 and 273 extending to the left and right may be bent (curved) back and forth.

In each of the above embodiments, the case where two vibrating bodies 72 are fixed to the base member 50 and the case where one vibrating body 272 is fixed to the substrate 91 have been described, but the present invention is not necessarily limited to this. .. For example, the number of vibrating bodies 72 and 272 fixed to the base member 50 and the substrate 91 may be one or a plurality. In particular, when a plurality of substrates 91 are provided side by side, it is preferable to provide a vibrating body for each of the substrates 91.

In each of the above embodiments, the case where the substrate 91 is arranged at an angle with respect to the horizontal direction in the used state has been described, but the present invention is not necessarily limited to this. For example, the substrate 91 may be arranged along the horizontal direction in the used state.

In each of the above embodiments, the non-woven fabric 97 is exemplified as an example of the covering body that covers the through hole 96 of the substrate 91, but the present invention is not necessarily limited to this. The covering body may be a material other than the non-woven fabric 97 as long as it allows air to flow through the through holes 96 and prevents foreign matter from entering. Therefore, for example, a woven fabric or a net-like material having breathability may be used to form the covering body.

In the first embodiment, the case where the vibration transmission member 70 is fixed from the bass side end of the bass member 50 located on the lowest bass side to the treble end of the base member 50 located on the treble side will be described. However, it is not necessarily limited to this. For example, when a plurality of base members 50 are provided side by side, it is sufficient that the vibration transmission member 70 is at least in contact with each of the plurality of base members 50. As a result, the vibration of the vibrating body 72 can be transmitted to each base member 50 (key 60 or substrate 91) via the vibration transmitting member 70.

In the first embodiment, the detailed description of the method of fixing the vibration transmitting member 70 to the base member 50 (contact position) has been omitted, but the vibration transmitting member 70 is in contact with each of at least a plurality of base members 50. If the configuration is such that vibration can be transmitted to the key 60 supported by the base member 50 and the substrate 91, the vibration transmission member 70 can be fixed to the base member 50 as appropriate, such as fastening with screws or bonding with an adhesive. Further, the contact position between the base member 50 and the vibration transmission member 70 due to the fixing may be continuous or intermittent in the left-right direction.

In the first embodiment, the case where the vibrating body 72 is fixed to the lower surface of the base member 50 via the vibration transmitting member 70 has been described, but the present invention is not necessarily limited to this, and the fixing position of the vibrating body 72 is appropriately set. Can be set. Therefore, for example, the vibrating body 72 may be fixed to the rear surface, the front surface, or the upper surface (the region between the base member 50 and the key 60) of the base member 50.

In the first embodiment, the case where the vibration of the vibrating body 72 is started when the power is turned on by the power switch 32 or when the cleaning start switch 33 is operated during non-performance has been described, but this is not necessarily the case. It is not limited to. For example, the vibrating body 72 may be vibrated only when the power is turned on by the power switch 32, or the vibrating body 72 may be vibrated only when the cleaning start switch 33 is operated. Further, the vibrating body 72 may be vibrated for a predetermined time based on the instruction to turn off the power by the power switch 32.

In the first embodiment, the case where the vibrating body 72 is composed of the first vibrating body 72a and the second vibrating body 72b has been described, but the present invention is not necessarily limited to this. For example, either the first vibrating body 72a or the second vibrating body 72b may be omitted. Further, the second vibrating body 72b may be vibrated only when the key is pressed, and a vibrating body (corresponding to the first vibrating body 72a) which vibrates when not playing may be separately provided on the bass side.

In the first embodiment, the amplitude of the vibration of the second vibrating body 72b (first vibrating body 72a) based on the signal from the signal output unit 140 is the second vibrating body 72b based on the signal from the sound source device 100. Although the case where it is made larger than the amplitude of the vibration of is described, it is not necessarily limited to this. For example, the amplitude of the vibration of the second vibrating body 72b (first vibrating body 72a) based on the signal from the signal output unit 140 is the amplitude of the vibration of the second vibrating body 72b based on the signal from the sound source device 100. It may be the same or smaller.

In the first embodiment, the case where the vibration frequency of the first vibrating body 72a and the second vibrating body 72b based on the signal from the signal output unit 140 is less than 20 Hz has been described, but the frequency is not necessarily limited to this. is not. For example, the frequency of vibration of the first vibrating body 72a and the second vibrating body 72b based on the signal from the signal output unit 140 may be a frequency outside the audible range of 20000 Hz or more.

In the first embodiment, the case where each of the first vibrating body 72a and the second vibrating body 72b is fixed to the base member 50 has been described, but the present invention is not necessarily limited to this. Either (or both) of the first vibrating body 72a and the second vibrating body 72b may be directly fixed to the substrate 91.

In the first embodiment, a case where characters are displayed on the display device 34 has been described as an example of means for notifying that the contacts are being cleaned by the vibration of the first vibrating body 72a and the second vibrating body 72b. However, it is not always limited to this. For example, notification may be performed by emitting a musical sound while cleaning the contacts. Further, the vibration of the first vibrating body 72a and the second vibrating body 72b based on the signal from the signal output unit 140 is set to a frequency within the audible range, and the audible sound is output by the vibration to clean the contacts. You may notify that there is.

In the first embodiment, the case where both the first vibrating body 72a and the second vibrating body 72b vibrate based on the signal from the signal output unit 140 has been described, but the present invention is not necessarily limited to this. For example, only the first vibrating body 72a may be vibrated based on the signal from the signal output unit 140.

In the first embodiment, the case where the second vibrating body 72b is provided in the region where the key 60 corresponding to the note name whose fundamental frequency is 55 Hz or more and less than 66 Hz is arranged has been described. Although not limited to such a range, it is preferable to provide the second vibrating body 72b in the region where the key 60 corresponding to the note name whose fundamental frequency is 32 Hz or more and less than 165 Hz is arranged.

That is, if the second vibrating body 72b is provided in the arrangement region of the key 60 corresponding to the sound name having a fundamental frequency of less than 32 Hz or 165 Hz or more, the second vibrating body 72b feels the most vibration in the acoustic piano. It moves away from the area (vibration peak). Therefore, it is difficult to simulate the playing feeling of an acoustic piano (the distribution of vibrations felt when a key is pressed as shown in FIG. 5B) with one second vibrating body 72b.

On the other hand, by providing the second vibrating body 72b in the region where the key 60 corresponding to the sound name having a fundamental frequency of 32Hz or more and less than 165Hz is arranged, one second vibrating body 72b can be used as an acoustic piano. You can get closer to the feeling of playing.

In the first embodiment, the case where the second vibrating body 72b is vibrated based on the musical sound signal of the sound source device 100 has been described, but the present invention is not necessarily limited to this. For example, a signal generation unit different from the sound source device 100 is provided for the second vibrating body 72b, and only when the key 60 corresponding to the range of the fundamental frequency of less than 440 Hz is pressed (the key 60 corresponding to the range of 440 Hz or more). The second vibrating body 72b may be vibrated by outputting a signal from the signal generation unit (ignoring the key press of).

In the first embodiment, the case where the second vibrating body 72b is vibrated at a fundamental frequency different for each key 60 pressed has been described, but the present invention is not necessarily limited to this. For example, the second vibrating body 72b may be vibrated at a constant fundamental frequency regardless of the range of the pressed key 60.

In the second embodiment, the case where the plurality of substrates 91 are provided side by side in the left-right direction has been described, but the present invention is not necessarily limited to this. For example, each contact may be formed on the substrate 91 made of one member.

In the second embodiment, the case where the vibration transmission member 273 is fixed from the bass-side end of the substrate 91 located on the lowest-pitched side to the treble-side end of the substrate 91 located on the treble-side is described. , Not necessarily limited to this. For example, when a plurality of substrates 91 are provided side by side, it is sufficient that the vibration transmission member 273 is at least in contact with each of the plurality of substrates 91. As a result, the vibration of the vibrating body 272 can be transmitted to each key 60 and each substrate 91 via the vibration transmitting member 273.

In the second embodiment, the detailed description of the method of fixing the vibration transmitting member 273 to the substrate 91 (contact position) has been omitted, but the vibration transmitting member 273 is in contact with each of at least a plurality of substrates 91 (the substrate). If the configuration is such that vibration can be transmitted to the key 60 and the contacts via 91), the vibration transmitting member 273 can be fixed to the substrate 91 as appropriate, such as fastening with screws or bonding with an adhesive. Further, the contact position between the substrate 91 and the vibration transmitting member 273 due to the fixing thereof may be continuous or intermittent in the left-right direction.

In the second embodiment, the case where the vibrating body 272 is fixed to the back surface of the substrate 91 via the vibration transmitting member 273 has been described, but the present invention is not necessarily limited to this. For example, the vibrating body 272 may be fixed to the surface of the substrate 91 via the vibration transmitting member 273, or the vibrating body 272 may be directly fixed to the surface of the substrate 91 (without passing through the vibration transmitting member 273).

1,201 Keyboard device 32 Power switch (operation unit)
33 Cleaning start switch (operation unit)
34 Display device (notification means)
50 Base member 60 Key 70 Vibration transmission member 72 Vibration body 72a First vibration body (vibration body)
72b Second vibrating body (vibrating body)
272 Vibrating body 273 Vibration transmitting member 91 Board 92 Fixed contact (contact)
93 Cover 93a Inner surface on the lower end side of the cover 94 Movable contacts (contacts)
96 Through hole 97 Non-woven fabric (cover)
100 Sound source device (second output means)
120 Signal processing unit (second output means)
130 amplifier (second output means)
140 Signal output unit (first output means)

Claims (15)

A base member, a plurality of keys supported by the base member and provided side by side in the scale direction, a substrate having contacts for detecting key pressing information of the plurality of keys and fixed to the base member, and the substrate or the substrate. A keyboard device including a vibrating body fixed to at least one of the base members and vibrating the substrate, and a first output means configured to be able to output a signal vibrating the vibrating body during non-performance. .. The keyboard device according to claim 1, wherein the substrate is arranged at an angle with respect to a horizontal direction in a use state in which the key is pressed by a performer. Equipped with an operation unit that can be operated by the performer
The keyboard device according to claim 1 or 2, wherein the first output means vibrates the vibrating body for a predetermined time based on the operation of the operation unit. The keyboard device according to claim 3, wherein the operation unit is a power switch for activating the keyboard device. The keyboard device according to claim 3 or 4, further comprising a notification means for notifying that the vibrating body is vibrating. A second output means for outputting a signal for vibrating the vibrating body based on the key being pressed is provided.
According to claim 1, the vibration of the vibrating body based on the signal output from the first output means has a larger amplitude than the vibration based on the signal output from the second output means. The keyboard device according to any one of 5. The keyboard device according to claim 6, wherein the first output means vibrates the vibrating body at a frequency outside the audible range. It is equipped with a sound source device that outputs a signal with a frequency corresponding to the range of the pressed key.
The vibrating body includes a first vibrating body that vibrates based on a signal output from the first output means, and a second vibrating body that vibrates based on a signal output from the second output means. Consists of at least from
The second output means attenuates a signal having a frequency equal to or higher than a predetermined value among the signals output from the sound source device and outputs the signal to the second vibrating body.
The first vibrating body is arranged in the key arrangement region in the sound range having a frequency of 440 Hz or higher.
The keyboard device according to claim 6 or 7, wherein the second vibrating body is arranged in the key arrangement region in a sound range having a frequency of less than 165 Hz. The contact includes a movable contact that is displaced when the key is pressed, and a fixed contact that the movable contact comes into contact with due to the displacement of the movable contact.
The keyboard device according to any one of claims 6 to 8, wherein the vibrating body is fixed to the substrate. One of claims 1 to 9, wherein the base member or a vibration transmitting member fixed to the substrate and having a higher rigidity than the base member and the substrate is provided over a plurality of key arrangement regions in the scale direction. The keyboard device described in. The keyboard device according to claim 10, wherein the vibrating body is fixed to the substrate via the vibration transmitting member. The vibration transmitting member is fixed to the back surface of the substrate on the side opposite to the contact.
The keyboard device according to claim 11, wherein the vibration transmitting member and the contact point are arranged at a position where they overlap in the thickness direction of the substrate. A plurality of the substrates are provided side by side in the scale direction.
The keyboard device according to claim 11 or 12, wherein the vibration transmission member integrally connects each of a plurality of the substrates. A cover formed by using a rubber-like elastic body and covering the contacts is provided.
The keyboard device according to claim 2, wherein a gap is formed between the inner surface on the lower end side of the cover and the contact point. The keyboard device according to claim 14, wherein the substrate includes a through hole that connects the space covered by the cover to the outside, and a net-like covering that covers the through hole.

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