Support assembly and keyboard apparatus

Patent metadata

Field	Value
Publication number	US-10403243-B2
Application number	US-201615074221-A
Country	US
Kind code	B2
Filing date	Mar 18, 2016
Priority date	Mar 25, 2015
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

A support assembly according to one embodiment of the present invention includes a support rotatably disposed with respect to a frame, a repetition lever rotatably connected to the support, an spring element supported by a support portion fixed to the support, the spring element which provides a rotational force to the repetition lever, and a contact portion between the repetition lever and the spring element, wherein a rotating portion of the repetition lever is provided with respect to the support portion on a side opposite to the contact portion between the repetition lever and the spring element.

First claim

The invention claimed is:

1. A support assembly comprising:
a support rotatably disposed with respect to a frame;
a repetition lever rotatably connected to the support via a flexible portion;
a spring element supported by a spring support portion fixed to the support, the spring element providing a rotational force to the repetition lever; and
a contact portion between the repetition lever and the spring element,
wherein a rotating portion of the repetition lever is provided with respect to the spring support portion on a side opposite to the contact portion between the repetition lever and the spring element, the rotating portion including a rotation center on the flexible portion of the repetition lever, and
when the support rotates away from the frame and the repetition lever rotates toward the support, the spring support portion is displaced between the contact portion and the flexible portion toward the flexible portion from the contact portion.

2. The support assembly according to claim 1 , wherein
the rotating portion of the repetition lever is provided on an extension line of a straight line connecting the spring support portion and the contact portion.

3. The support assembly according to claim 1 , wherein
in a rotation range of the repetition lever, a position is provided where the repetition lever and the spring element become parallel to each other.

4. The support assembly according to claim 1 , wherein
the spring element is a straight-line-shaped member.

5. The support assembly according to claim 4 , wherein
in a rotation range of the repetition lever, the repetition lever and the straight-line-shaped member of the spring element are positioned at an angle in a range equal to or larger than 0° and equal to or smaller than 20°.

6. The support assembly according to claim 1 , wherein the support includes a resin structure.

7. The support assembly according to claim 1 , comprising:
a jack including a resin structure.

8. A keyboard apparatus comprising:
a plurality of the support assemblies according to claim 1 ; and
keys disposed correspondingly to respective support assemblies among the plurality of the support assemblies to rotate respective supports among the supports of the respective support assemblies.

9. The keyboard apparatus according to claim 8 , comprising:
a sound output unit for outputting a sound signal generated in accordance with key pressing of a key among the keys.

10. The keyboard apparatus according to claim 9 , wherein
the sound output unit comprises:
a loudspeaker for outputting the sound signal generated in accordance with key pressing of a key among the keys.

11. The keyboard apparatus according to claim 9 , wherein
the sound output unit comprises:
a terminal for outputting the sound signal generated in accordance with key pressing of a key among the keys.

12. The keyboard apparatus according to claim 8 , comprising:
a string for generating a sound by being struck by a hammer in accordance with key pressing of a key among the keys.

13. A support assembly comprising:
a support rotatably disposed with respect to a frame;
a repetition lever rotatably connected to the support via a flexible portion;
a spring element supported by a spring support portion fixed to the support, the spring element providing a rotational force to the repetition lever; and
a contact portion between the repetition lever and the spring element,
wherein a rotating portion of the repetition lever is provided with respect to the spring support portion on a side opposite to the contact portion between the repetition lever and the spring element,
the contact portion includes a protrusion projecting from the repetition lever, the protrusion making contact with the spring element,
the rotating portion including a rotation center on the flexible portion of the repetition lever, and
when the support rotates away from the frame and the repetition lever rotates toward the support, the spring support portion is displaced between the contact portion and the flexible portion toward the flexible portion from the contact portion.

14. A support assembly comprising:
a support rotatably disposed with respect to a frame;
a repetition lever rotatably connected to the support;
a spring element supported by a spring support portion fixed to the support, the spring element providing a rotational force to the repetition lever; and
a contact portion between the repetition lever and the spring element,
wherein a rotating portion of the repetition lever is provided with respect to the spring support portion on a side opposite to the contact portion between the repetition lever and the spring element,
the rotating portion of the repetition lever includes a region with flexibility, the support and the repetition lever being constantly coupled together via the region with flexibility,
the rotating portion including a rotation center on the region with flexibility of the repetition lever, and
when the support rotates away from the frame and the repetition lever rotates toward the support, the spring support portion is displaced between the contact portion and the region with flexibility toward the region with flexibility from the contact portion.

15. The support assembly according to claim 14 , wherein
the region with flexibility of the repetition lever includes another spring element.

16. A support assembly comprising:
a support rotatably disposed with respect to a frame;
a repetition lever rotatably connected to the support via a rotating portion;
a spring element supported by a spring support portion fixed to the support, the spring element providing a rotational force to the repetition lever; and
a contact portion between the repetition lever and the spring element,
wherein
the rotating portion of the repetition lever is provided with respect to the spring support portion on a side opposite to the contact portion between the repetition lever and the spring element, the rotating portion including a rotation center of the repetition lever, and
when the support rotates away from the frame and the repetition lever rotates toward the support, the rotating portion of the repetition lever is provided on an extension line of a straight line connecting the spring support portion and the contact portion.

17. The support assembly according to claim 16 , wherein
in a rotation range of the repetition lever, a position is provided where the repetition lever and the spring element become parallel to each other.

18. The support assembly according to claim 16 , wherein
the spring element is a straight-line-shaped member.

19. The support assembly according to claim 18 , wherein
in a rotation range of the repetition lever, the repetition lever and the straight-line-shaped member of the spring element are positioned at an angle in a range equal to or larger than 0° and equal to or smaller than 20°.

20. A keyboard apparatus comprising:
a plurality of the support assemblies according to claim 16 ; and
keys disposed correspondingly to respective support assemblies among the plurality of the support assemblies to rotate respective supports among the supports of the respective support assemblies.

Assignees

• Yamaha Corp

Inventors

• OHBA Akito

Classifications

• G10C3/22 Primary

  specially adapted for grand pianos · CPC title

• G10C3/16 Primary

  Actions · CPC title

• G10C3/18

  Hammers · CPC title

• G10C3/24 Primary

  Repetition [tremolo] mechanisms · CPC title