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US-12620378-B2 - Keyboard unit

US12620378B2US 12620378 B2US12620378 B2US 12620378B2US-12620378-B2

Abstract

A keyboard unit includes a frame; a first member connected to the frame, a rigidity of the first member in a first direction being lower than a rigidity of the first member in a second direction intersecting with the first direction; and a mounted member. The mounted member includes a first pressing portion configured to suppress a movement of the first member in the first direction by pressing a part of the first member in the second direction, and a positioning portion configured to suppress a movement of the mounted member with respect to the frame in the first direction.

Inventors

  • Akito OHBA
  • Hirotsugu Kamiya
  • Hiroyuki Yamano

Assignees

  • YAMAHA CORPORATION

Dates

Publication Date
20260505
Application Date
20230119
Priority Date
20220124

Claims (16)

  1. 1 . A keyboard unit comprising: a frame; a first member connected to the frame, a rigidity of the first member in a first direction being lower than a rigidity of the first member in a second direction intersecting with the first direction; and a mounted member including: a first pressing portion configured to suppress a movement of the first member in the first direction by pressing a part of the first member in the second direction; and a positioning portion configured to suppress a movement of the mounted member with respect to the frame in the first direction.
  2. 2 . The keyboard unit according to claim 1 , wherein: the first pressing portion is a pair of first pressing portions, and the pair of first pressing portions is configured to suppress the movement of the first member in the first direction by sandwiching a part of the first member in the second direction.
  3. 3 . The keyboard unit according to claim 1 , wherein an edge portion of the first member in the second direction is connected to the frame.
  4. 4 . The keyboard unit according to claim 1 , further comprising: a second member aligned in the first direction with the first member, wherein a rigidity of the second member in the first direction is lower than a rigidity of the second member in the second direction, wherein an edge portion of the second member in the second direction is connected to the frame, wherein the positioning portion includes a second pressing portion configured to suppress a movement of the second member in the first direction by pressing a part of the second member in the second direction, and wherein a positional relationship between the first pressing portion and the second pressing portion in the first direction is fixed.
  5. 5 . The keyboard unit according to claim 4 , wherein: the second member is arranged in a position closer to a center of the keyboard unit than the first member in the first direction, and the positioning portion includes a pair of stoppers configured to lock to a part of the second member in the first direction.
  6. 6 . The keyboard unit according to claim 1 , further comprising: a second member, a rigidity of the second member in the first direction being lower than a rigidity of the second member in the second direction, and an edge portion of the second member in the second direction is connected to the frame; and a third member, a rigidity of the third member in the first direction being lower than a rigidity of the third member in the second direction, and an edge portion of the third member in the second direction is connected to the frame, wherein the positioning portion includes: a second pressing portion configured to suppress a movement of the second member in the first direction by pressing a part of the second member in the second direction, a third pressing portion configured to suppress a movement of the third member in the first direction by pressing a part of the third member in the second direction, and wherein a positional relationship among the first pressing portion, the second pressing portion and third pressing portion in the first direction is fixed.
  7. 7 . The keyboard unit according to claim 1 , wherein: the keyboard unit has a longitudinal shape in the first direction, the first member includes a rib and a boss, the rib has a longitudinal shape in the second direction, a first edge of the rib is connected to the frame, a second edge of the rib is connected to the boss, the boss is pressed by the first pressing portion in the second direction and directly or indirectly contacts the first pressing portion.
  8. 8 . The keyboard unit according to claim 1 , wherein the positioning portion includes a structure connected to the frame.
  9. 9 . The keyboard unit according to claim 1 , wherein the first member is adjacent to a member configured with the keyboard unit in the first direction.
  10. 10 . The keyboard unit according to claim 1 , wherein: the mounted member includes a through hole, a fastening member fixes the mounted member to the first member by penetrating the through hole, and in the first direction, a width of the through hole is larger than a width of a part of the fastening member penetrating the through hole.
  11. 11 . The keyboard unit according to claim 1 , wherein; the first pressing portion is a pair of first pressing portions, the first member includes: a screw hole corresponding to a screw, the screw fixing the mounted member to the first member; and a first contacting portion and a second contacting portion in contact with the pair of first pressing portions, the first contacting portion contacts one of the pair of first pressing portions in a clockwise direction in a circular arc around a center of the screw hole in a view of visible a bottom of the screw hole, and the second contacting portion contacts to the other of the pair of first pressing portions in a clockwise direction in the circular arc in a view of visible a bottom of the screw hole.
  12. 12 . The keyboard unit according to claim 1 , wherein: the first pressing portion is a pair of first pressing portions, the first member includes a first contacting portion and a second contacting portion, the first contacting portion and the second contacting portion being in contact with the pair of first pressing portions, and the first contacting portion is in contact with one of the pair of first pressing portions at two or more points.
  13. 13 . The keyboard unit according to claim 12 , wherein the second contacting portion is in contact with the other of the pair of first pressing portions at two or more points.
  14. 14 . The keyboard unit according to claim 11 , wherein: the one of the pair of first pressing portions is recessed corresponding to a shape of the first member in the first contacting portion, and the other of the pair of first pressing portions is recessed corresponding to a shape of the first member in the second contacting portion.
  15. 15 . The keyboard unit according to claim 1 , wherein: the first pressing portion is a pair of first pressing portions, and a movement of the first member in the first direction is suppressed by a friction between the first member and the pair of first pressing portions.
  16. 16 . The keyboard unit according to claim 1 , wherein: the first pressing portion is a pair of first pressing portions that are mutually parallel, and the pair of first pressing portions have a longitudinal shape in the first direction.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application claims the benefit of priority to Japanese Patent Application No. 2022-008844, filed on Jan. 24, 2022, the entire contents of which are incorporated herein by reference. FIELD An embodiment of the present disclosure relates to a keyboard unit. In particular, an embodiment of the present disclosure relates to a keyboard unit having a configuration in which a mounted member is attached to a frame. BACKGROUND Generally, in an electronic musical instrument, a mounted member is attached to a frame by a fastener such as a screw. Usually, a through hole is arranged in the mounted member. The mounted member is attached to the frame by connecting the fastener to the frame through the through hole. For example, in Japanese laid-open patent publication No. 2018-180527, a plate-shaped member (circuit substrate) arranged with a sensor is fixed to a frame by screws. In such a configuration, considering the dimensional differences between the shape of the frame and the shape of the mounted member (circuit substrate), the size of the through hole arranged in the mounted member may be designed to be larger than the size of the fastener in a specific direction. SUMMARY A keyboard unit according to an embodiment of the present disclosure includes a frame, a first member connected to the frame, a rigidity of the first member in a first direction being lower than a rigidity of the first member in a second direction intersecting with the first direction and a mounted member. The mounted member includes a first pressing portion configured to suppress a movement of the first member in the first direction by pressing a part of the first member in the second direction, and a positioning portion configured to suppress a movement of the mounted member with respect to the frame in the first direction. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram showing a configuration of a keyboard unit according to an embodiment of the present disclosure. FIG. 2 is a block diagram showing a configuration of a sound source apparatus according to an embodiment of the present disclosure. FIG. 3 is an explanatory diagram of a configuration of the inside of a housing according to an embodiment of the present disclosure when viewed from a side. FIG. 4 is a side view showing an example of a hammer assembly according to an embodiment of the present disclosure. FIG. 5 is an explanatory diagram of a configuration of the inside of a housing according to an embodiment of the present disclosure when viewed from a bottom surface. FIG. 6 is a diagram showing a stopper rail according to an embodiment of the present disclosure. FIG. 7 is a diagram showing a state in which a stopper rail is attached to a frame in an embodiment of the present disclosure. FIG. 8 is a cross-sectional view cut along a line of A-A′ of FIG. 7. FIG. 9 is a diagram showing a state in which a stopper rail is attached to a frame in an embodiment of the present disclosure. FIG. 10 is a diagram showing a state in which a stopper rail is attached to a frame in an embodiment of the present disclosure. FIG. 11 is a diagram showing a state in which a stopper rail is attached to a frame in an embodiment of the present disclosure. FIG. 12 is a cross-sectional view cut along a line of B-B′ of FIG. 11. FIG. 13 is a diagram showing a state in which a stopper rail is attached to a frame in an embodiment of the present disclosure. DESCRIPTION OF EMBODIMENTS Hereinafter, a keyboard unit according to an embodiment of the present disclosure will be described in detail with reference to the drawings. The following embodiments are examples of embodiments of the present disclosure, and the present disclosure is not to be construed as being limited to these embodiments. In the drawings referred to in the present embodiment, the same or similar parts are denoted by the same symbols or similar symbols (only denoted by A, B, etc. after the numerals). Repeated descriptions of the above-described symbols may be omitted. A dimensional ratio (ratio between components, the ratio in the vertical, lateral, and height directions, and the like) of the drawings may be different from an actual ratio for convenience of explanation, and a part of the configuration may be omitted from the drawings. In the following description, based on the vertical direction in the drawings, expressions such as “above”, “upper”, “upper end”, “below”, “lower”, and “lower end” may be used. However, these vertical directions merely describe the relationship between the relative directions, and the vertical direction may be reversed. 1. First Embodiment [1-1. Configuration of Keyboard Unit] FIG. 1 is a diagram showing a configuration of a keyboard unit according to a first embodiment. For example, a keyboard unit 1 is an electronic keyboard instrument such as an electronic piano that sounds according to a key depression by a user (performer). The keyboard unit 1 may be a keyboard-type cont