Piano key cover buffer detection device and detection method

Abstract

The invention relates to a piano key cover buffer detection device which comprises a key cover, a side plate, a frame, a pushing mechanism, a reset mechanism, a gravity sensor and an in-place sensor. The key cover comprises a front key cover and a rear key cover. The rear key cover is fixed on the frame. The front key cover rotates around the rear key cover up and down. The side plate which is used for mounting the buffer in contact with the front key cover is fixed on the frame. The pushing mechanism which pushes the front key cover from the turn up position to a natural falling state, the reset mechanism which pushes the front key cover from the cover down position to the turn up position, the gravity sensor which senses the pressure of the front key cover which naturally falls to the cover down position, and the in-place sensor which senses whether the front key cover falls in place to the cover down position are arranged on the frame. The invention further relates to a piano key cover buffer detection method. According to the invention, the test situation is biased towards the actual mounting scene and the actual use situation; an acquired result is accurate; and the detection device and the detection method belong to the technical field of piano part detection devices.

Description

technical field [0001] The invention relates to a detection device for piano parts, in particular to a detection device and a detection method for a piano key cover buffer. Background technique [0002] For the safe use of the piano, it is often necessary to add a buffer to the key cover to avoid pinching hands. [0003] After the buffer is mass-produced, random inspection is required to ensure the quality. The utility model patent with the authorized announcement number CN201269818Y discloses a detection device for a piano key cover slow-down device, including a motion mechanism and a controller. The motion mechanism includes a bracket, a fixed plate, a movable plate and a balance cylinder. The plate is hinged, and the other end is hinged to the bracket. During the test, the slow descender is installed, and the movable plate is driven to simulate the movement of the key cover through the expansion and contraction of the balance cylinder, so as to realize the opening and c...

AI Technical Summary

Problems solved by technology

However, this detection device has the following disadvantages: (1) It adopts a combination of a fixed plate and a movable plate, and does not use a key cover, which is different from the actual installation scene

(2) The movable plate is forced to open and close by the expansion and contraction of the balance cylinder. The key cover has no natural lowering process. The whole process is driven by external force, which does not match the actual use of the key cover.

(3) The test result is inaccurate due to deviation from the actual installation scene and actual use

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