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1. 发明公开

US20240112657A1 KEY WEIGHT AND KEY FOR KEYBOARD INSTRUMENT 审中-公开
公开(公告)号：US20240112657A1
公开(公告)日：2024-04-04
申请号：US18473937
申请日：2023-09-25
申请人： KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO
发明人： Takuma MURAI
IPC分类号： G10H1/34
CPC分类号： G10H1/346 , G10H2220/221 , G10H2220/265
摘要： A key weight capable of being easily mounted in a key for a keyboard instrument and being positively prevented from falling off the key. The key weight is mounted in the key by being inserted from outside into a weight-accommodating portion of the key, and includes a block-shaped weight body portion, protrusions that are formed on an insertion leading end of the weight body portion into the weight-accommodating portion and are elastically deformed by a reaction force from a far-side wall surface of the weight-accommodating portion when the weight body portion in a state in contact with the far-side wall surface during mounting of the key weight is pushed into the weight-accommodating portion, and latched portions that are formed on side surfaces of the weight body portion and are latched with side walls of the weight-accommodating portion.

2. 发明公开

US20230317041A1 KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT AND KEY FOR KEYBOARD DEVICE 审中-公开
公开(公告)号：US20230317041A1
公开(公告)日：2023-10-05
申请号：US18189143
申请日：2023-03-23
申请人： KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO
发明人： Satoshi KITO
IPC分类号： G10H1/34
CPC分类号： G10H1/346 , G10H2220/221 , G10H2220/265
摘要： A keyboard device for a keyboard includes a hammer vertically pivotally moved in a manner interlocked with a key having been depressed, and a cushion provided below the hammer, the hammer contacting the cushion from above when the hammer having been pivotally moved upward in accordance with depression of the key returns to an original position in accordance with release of the key. The hammer includes a plurality of protrusions formed at respective spaced location in a rearward sequence from a hammer support shaft, such that they each extend downward. The cushion is formed by a plurality of cushions sequentially contacted by the plurality of protrusions, when the hammer contacts the cushion from above, in order from a protrusion closest to the hammer support shaft toward a protrusion remotest from the hammer support shaft.

3. 发明申请

US20230098045A1 KEY FOR KEYBOARD DEVICE 有权
公开(公告)号：US20230098045A1
公开(公告)日：2023-03-30
申请号：US17949960
申请日：2022-09-21
申请人： KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO
发明人： Tsutomu YAMAGUCHI
IPC分类号： G10H1/34
摘要： A key for a keyboard device includes a resin key body and one or a plurality of woody boards attached along at least part of a side surface of the key body. The key body includes an upper convex part which extends along an upper end of the side surface and is formed continuous with on upper surface of the key body such that it protrudes in a lateral direction of the key body, and a lower supporting protrusion which is disposed in the vicinity of a central portion or a lower end of the side surface such that it protrudes in a lateral direction of the key body and is opposed to the upper convex part. The woody board is sandwiched by the upper convex part and the lower supporting protrusion.

4. 发明申请

US20220293068A1 KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT 有权
公开(公告)号：US20220293068A1
公开(公告)日：2022-09-15
申请号：US17653574
申请日：2022-03-04
申请人： KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO
发明人： Akihiro SUZUKI
IPC分类号： G10C3/18 , G10H1/34 , G10C3/04
摘要： A keyboard device for a keyboard instrument, capable of obtaining excellent touch feeling and stable key stroke without giving sponge feeling or unpleasant vibration during key depression. The keyboard device includes a keyboard chassis, keys pivotally supported on the chassis, hammers swingably supported on the chassis and swinging along with key depression, a hammer upper limit stopper provided on a chassis rear end and contacted by a hammer rear end from below during key depression, and a key lower limit stopper provided on a chassis front end and contacted by front ends of the keys from above during key depression. The hammer upper limit stopper has predetermined flexibility that allows deformation of the hammer upper limit stopper such that after contact of a hammer during key depression, an associated key reaches its lowest position in a state in contact with the key lower limit stopper.

5. 发明授权

US10410610B1 Damper for piano 有权
公开(公告)号：US10410610B1
公开(公告)日：2019-09-10
申请号：US16289337
申请日：2019-02-28
申请人： KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO
发明人： Yasushi Terai
IPC分类号： G10C3/166
摘要： A damper for a piano, which has a bifurcated damper felt of which a space between two protrusions is difficult to be narrowed. A damper head extends along three strings in a lengthwise direction thereof and is movable in directions in which the damper moves into and out of contact with the three strings. Damper felt is attached to a string-side surface of the damper head such that it extends in a lengthwise direction of the damper head, and includes two protrusions formed to protrude toward the strings in a bifurcated manner such that they can be brought into contact with the three strings in a state inserted into respective spaces therebetween. The damper felt is attached to the damper head such that deformation of the damper felt in which a space between the two protrusions is narrowed is resisted.

6. 发明授权

US10170086B2 Support device for pivotal member of keyboard instrument and method of manufacturing the same 有权
公开(公告)号：US10170086B2
公开(公告)日：2019-01-01
申请号：US15478044
申请日：2017-04-03
申请人： KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO
发明人： Takaaki Taguchi
IPC分类号： G10C3/18 , G10C3/16
摘要： A support device for a pivotal member of a keyboard instrument, in which opposite ends of a pivotal pin fixed to a pivotal member can be each properly positioned in the center of a pin hole, to thereby enable the pivotal member to perform efficient and stable pivotal motion. The support device that pivotally supports the pivotal member pivotally moved by key depression includes a flange body including two support walls opposed to each other with a predetermined spacing therebetween, and two pin holes which are formed in the respective support walls and in which opposite ends of the pivotal pin are inserted, respectively, and two bearings fixed in the pin holes in an inserted state and having opposite ends of the pivotal pin inserted therein, for pivotally supporting the pivotal. Each bearing is formed by a braid formed in a hollow cylindrical shape.

7. 发明申请

US20170278498A1 KEY GUIDE STRUCTURE FOR KEYBOARD INSTRUMENT 有权
公开(公告)号：US20170278498A1
公开(公告)日：2017-09-28
申请号：US15459359
申请日：2017-03-15
申请人： KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO
发明人： Akihiro SUZUKI
IPC分类号： G10H1/34
CPC分类号： G10H1/34 , G10H1/346 , G10H2220/265
摘要： A key guide structure for a keyboard instrument, which is capable of stably and appropriately guiding a key pivotally moved by key depression without generating noise. The key guide structure has guide holders each erected below a guide recess of each key, and guide members mounted to tops of the guide holders, respectively, each for sliding contact with lateral inner side surfaces of the recess. Each guide member includes a body disposed between the lateral inner side surfaces of the recess with a predetermined clearance, two lateral flexible portions laterally flexible and extending from lateral ends of a front or rear surface of the body in a manner protruding in a front-rear direction, and two lateral contact portions which are provided at front ends of the flexible portions in a manner protruding sideward and are in contact with the lateral inner side surfaces of the recess.

8. 发明授权

US09437173B2 Piano action 有权
标题翻译：钢琴动作
公开(公告)号：US09437173B2
公开(公告)日：2016-09-06
申请号：US14308437
申请日：2014-06-18
申请人： KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO
发明人： Yasushi Terai
IPC分类号： G10C3/18 , G10C1/02 , G10C3/16
CPC分类号： G10C1/02 , G10C3/161
摘要： Obtained is a structure of a piano action by which excellent playing reproducibility is secured even in a case of playing by repeatedly striking a key at an extremely high speed. In a piano action including a plurality of hammers 31 for striking keys, hammer shanks 32 that support the hammers turnably, hammer rails 1 that restrict the hammer shanks 32 from turning after the hammers strike strings, and hammer cushions (shock absorbing materials) 100 that are placed on the hammer rails and absorb motion energy generated by collision with the hammer shanks 32, the hammer cushions (shock absorbing materials) 100 are disposed at an angle so as not to become parallel to contact surfaces of the hammer shanks 32.
摘要翻译：获得的是一种钢琴动作的结构，即使在通过以极高的速度反复敲击琴键的情况下也可以确保优异的演奏再现性。在包括用于敲击键的多个锤31的钢琴动作中，可转动地支撑锤的锤柄32，在锤锤撞击之后限制锤柄32转动的锤轨1和锤垫（减震材料）100，其中放置在锤子轨道上并吸收与锤柄32碰撞产生的运动能量，锤垫（减震材料）100以一定角度设置成不与锤柄32的接触表面平行。

9. 发明申请

US20150269922A1 ELECTRONIC KEYBOARD MUSICAL INSTRUMENT 有权
标题翻译：电子键盘音乐仪器
公开(公告)号：US20150269922A1
公开(公告)日：2015-09-24
申请号：US14609678
申请日：2015-01-30
申请人： Kabushiki Kaisha Kawai Gakki Seisakusho
发明人： Kaoru MATSUNAGA
IPC分类号： G10H7/04
CPC分类号： G10H7/00 , G10H1/08 , G10H7/04 , G10H2210/271
摘要： An electronic keyboard musical instrument includes a storage device, a musical tone generation unit, a resonating sound generation unit, and an adding unit. The musical tone generation unit reads out corresponding musical tone waveform data from the storage device according to key depression information to generate a musical tone waveform signal and a first register resonating sound waveform signal. The resonating sound generation unit receives the musical tone waveform signal to cause the resonating sound generation circuit to generate a second register resonating sound waveform signal according to damper pedal operator manipulation information and the key depression information, and outputs the second register resonating sound waveform signal. The adding unit is configured to add the musical tone waveform signal and the resonating sound waveform signal from the musical tone generation unit and the resonating sound generation unit respectively, and outputting a resulting signal.
摘要翻译：电子键盘乐器包括存储装置，乐音产生单元，共鸣声产生单元和添加单元。音乐生成单元根据键按压信息从存储装置读出相应的乐音波形数据，以生成乐音波形信号和第一寄存器谐振声波形信号。谐振声产生单元接收乐音波形信号，以使谐振声产生电路根据制音踏板操作者操作信息和按键按压信息产生第二寄存器谐振声波形信号，并输出第二寄存器谐振声波形信号。添加单元被配置为分别从乐音产生单元和谐振声音产生单元中添加乐音波形信号和谐振声波形信号，并输出结果信号。

10. 发明授权

US09076410B2 Fallboard arrangement for keyboard instrument and opening and closing device for fallboard 有权
标题翻译：键盘乐器的落地布置和倒车开关装置
公开(公告)号：US09076410B2
公开(公告)日：2015-07-07
申请号：US14480455
申请日：2014-09-08
申请人： KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO
发明人： Seisaku Shinmachi
IPC分类号： G10C3/02
CPC分类号： G10C3/02
摘要： A fallboard arrangement for a keyboard instrument, which makes it possible to make flat the entire upper surface of a keyboard instrument in a closed state. A fallboard back section is immovably provided in a rear part of the body, in a horizontal state. A fallboard is movable between a closed position where it is forward of the fallboard back section and has an upper surface thereof made flush with that of the fallboard back section in a state closing the performance section and an open position where it is upward of the fallboard back section so as to open the performance section. A hinge connects the fallboard to the fallboard back section in a manner pivotally movable between the closed position and the open position and is disposed downward of the fallboard in the closed position and the upper surface of the fallboard back section.
摘要翻译：用于键盘乐器的跌倒布置，这使得可以使键盘乐器的整个上表面在关闭状态下变平。在水平状态下，未落后的部分不可移动地设置在身体的后部。坠落板可在关闭位置之间移动，该关闭位置在其落后背部分的前方，并且其上表面在关闭演奏部分的状态和在坠落板向上的打开位置处与落后背部分的上表面齐平返回部分，以打开性能部分。铰链将倒塌板与倒塌板后部以能够在关闭位置和打开位置之间枢转运动的方式连接，并且在关闭位置和倒塌后部的上表面处设置在坠落板的下方。

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