LEG OF KEYBOARD INSTRUMENT AND LEG ATTACHMENT STRUCTURE

• US 20200135154A1
• Filed: 10/29/2019
• Published: 04/30/2020
• Est. Priority Date: 10/31/2018
• Status: Active Grant

• Current Assignee: Kawai Musical Instruments Manufacturing Company Limited
• Original Assignee: Kawai Musical Instruments Manufacturing Company Limited
• Inventors: Yamashita, Mitsuo, Ichihara, Hikari
• Granted Patent: US 10,991,347 B2
• Time in Patent Office: Days
• CPC Class Codes: F16M 13/005 integral with the apparatus or articles to be supported
• CPC Class Codes: G10C 1/02 of upright pianos
• CPC Class Codes: G10C 3/02 Cases

Abstract

A leg attachment structure for a keyboard instrument including leg main bodies that support a keyboard portion from both sides, the keyboard portion in which plural keys are arranged on a key bed, wherein the leg attachment structure has plates installed on upper surfaces of the leg main bodies, the plates and the leg main bodies are fixed by inserting rod-shaped portions formed on lower surfaces of the plates into hole portions provided in the leg main bodies, and the plates are formed to be larger than an area of the upper surfaces of the leg main bodies, and installed at positions eccentric to the inner side and the rear side of the keyboard portion with respect to the upper surfaces of the leg main bodies.

Claims

1. A leg attachment structure for a keyboard instrument including leg main bodies that support a keyboard portion from both sides, the keyboard portion in which plural keys are arranged on a key bed, wherein

the leg attachment structure has plates installed on upper surfaces of the leg main bodies,

the plates and the leg main bodies are fixed by inserting rod-shaped portions formed on lower surfaces of the plates into hole portions provided in the leg main bodies, and

the plates are formed to be larger than an area of the upper surfaces of the leg main bodies.

2. The leg attachment structure for a keyboard instrument according to claim 1, wherein

the plates are installed at positions eccentric to the inner side and the rear side of the keyboard portion with respect to the upper surfaces.

3. The leg attachment structure for the keyboard instrument according to claim 1, wherein

the plates and the rod-shaped portions are made of metal and the leg main bodies are made of wood, and

by forming a thread on the rod-shaped portions and inserting the rod-shaped portions into the hole portions, the leg main bodies and the plates are fixed.

4. The leg attachment structure for the keyboard instrument according to claim 2, wherein

the plates and the rod-shaped portions are made of metal and the leg main bodies are made of wood, and

by forming a thread on the rod-shaped portions and inserting the rod-shaped portions into the hole portions, the leg main bodies and the plates are fixed.

5. The leg attachment structure for a keyboard instrument according to claim 1, wherein

by installing side arms on both side surfaces of the key bed, providing groove portions each of which is continuous over both a lower surface of the key bed and a lower surface of each of the side arms, and fitting the plates to the groove portions, the key bed, the side arms, and the leg main bodies are fixed.

6. A leg of a keyboard instrument comprising:

a long leg main body in which a hole portion is provided at a center position on an upper surface; and

a plate having an area larger than an area of the upper surface of the leg main body, the plate for which a rod-shaped portion to be inserted into the hole portion is formed, the plate being installed on the upper surface of the leg main body, wherein the rod shape portion is formed at a position eccentric from a center of the plate, and

at the time of installing the plate to the leg main body, two adjacent sides of the plate are positioned entirely on the outside of the upper surface of the leg main body.

7. The leg of the keyboard instrument according to claim 6, wherein

the plate and the rod-shaped portion are made of metal and the leg main body is made of wood, and

by forming a thread on the rod-shaped portion and inserting the rod-shaped portion into the hole portion, the leg main body and the plate are fixed.