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Foldable piano frame

A technology of piano racks and turntables, which is applied in the direction of music auxiliary equipment, musical instrument supports, instruments, etc., which can solve the problems of time-consuming, laborious, and inconvenient operation, and achieve the effect of convenient operation

Active Publication Date: 2015-05-06
NINGBO SOUNDKING ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing folding piano frame often adopts an X-shaped folding piano frame. The X-shaped folding piano frame is generally composed of a first support rod and a second support rod that are connected to each other to form a frame body, and can be adjusted by rotating the first support rod and the second support rod. The height of the X-shaped folding piano frame is positioned by the positioning device. However, it is often necessary to loosen the positioning device when adjusting. After adjusting the positions of the first support rod and the second support rod, first use the hand Hold the first support rod and the second support rod to prevent further relative rotation, and then adjust the positioning device to fix it. When retracting, you also need to loosen the positioning device first. After folding the first support rod and the second support rod, hold the first support rod with your hands. The support rod and the second support rod are prevented from loosening, and then the positioning device is adjusted to fix it. The operation is not convenient enough, and once it is necessary to repeatedly adjust the height of the X-shaped folding piano stand, it will be more time-consuming and laborious.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: A folding piano frame, including a first support rod 1 and a second support rod 2 that are axially connected to each other, a first turntable 11 is fixedly arranged on the first support rod 1 , and a The second rotating disk 12, the second rotating disk 12 is fixedly provided with a fixed disk 3, the fixed disk 3 is located between the first rotating disk 11 and the second rotating disk 12, the fixed disk 3 is provided with an arc-shaped sliding groove 31 along the circumferential direction, the first The turntable 11 is provided with an arc-shaped adjustment groove 111 along the circumferential direction, and the arc-shaped sliding groove 31 is provided with a limit block 4 that can slide along the arc-shaped sliding groove 31. The inner surface of the first turntable 11 is along the direction of the arc-shaped adjustment groove 111. An arc-shaped positioning tooth groove 112 is arranged around the center, and a row of arc-shaped positioning racks (not sho...

Embodiment 2

[0018] Embodiment 2: The remaining parts are the same as Embodiment 1, except that the thickness of the positioning protrusion 821 is 0.8 times the groove depth of the arc-shaped adjustment groove 111 .

Embodiment 3

[0019] Embodiment 3: The remaining parts are the same as Embodiment 1, the difference is that the thickness of the positioning protrusion 821 is 0.9 times the groove depth of the arc-shaped adjustment groove 111 .

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Abstract

The invention discloses a foldable piano frame. The foldable piano frame comprises a first supporting rod and a second supporting rod which are mutually shafted. The foldable piano frame is characterized in that a first rotating plate is fixedly arranged on the first supporting rod; a second rotating plate is fixedly arranged on the second supporting rod; a fixing plate is fixedly arranged on the second rotating plate and positioned between the first rotating plate and the second rotating plate; an arc-shaped sliding groove is formed in the fixing plate; an arc-shaped adjusting groove in which a limiting block is arranged is formed in the first rotating plate; an adjusting pin which passes through the arc-shaped adjusting groove is fixedly arranged on the limiting block; a spring equipped with a fixing end and an elastic restoring end is arranged in the fixing plate; the fixing end of the spring is fixedly connected with the fixing plate, and while the elastic restoring end of the spring is embedded into an inserting groove in the limiting block and used for compressing the limiting block close to the upper end of the arc-shaped adjusting groove; a positioning device is arranged at the end part of the adjusting pin. The foldable piano frame has the advantages that the piston frame can be conveniently expanded, or retracted to be positioned, and both time and force can be saved.

Description

technical field [0001] The invention relates to a piano frame structure, in particular to a folding piano frame. Background technique [0002] The existing folding piano frame often adopts an X-shaped folding piano frame. The X-shaped folding piano frame is generally composed of a first support rod and a second support rod that are connected to each other to form a frame body, and can be adjusted by rotating the first support rod and the second support rod. The height of the X-shaped folding piano frame is positioned by the positioning device. However, it is often necessary to loosen the positioning device when adjusting. After adjusting the positions of the first support rod and the second support rod, first use the hand Hold the first support rod and the second support rod to prevent further relative rotation, and then adjust the positioning device to fix it. When retracting, you also need to loosen the positioning device first. After folding the first support rod and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10G5/00
Inventor 熊齐军吕一鸣
Owner NINGBO SOUNDKING ELECTRONICS