Abstract: A piezoelectric element, an electronic percussion instrument, and a method for manufacturing a piezoelectric element and an electronic percussion instrument are capable of suppressing a decrease in detection sensitivity of striking. A protective film covers an upper electrode of a piezoelectric element and is formed using a material capable of suppressing gas permeation (for example, a resin material such as rosin), so that contact between gas surrounding the upper electrode and the upper electrode can be blocked by the protective film. As a result, even in the case where a cover covering the piezoelectric element is made of rubber, reaction between sulfur volatilized from the cover and silver contained in the upper electrode can be suppressed, so that deterioration of the upper electrode can be suppressed. Therefore, a decrease in sensitivity of the piezoelectric element to striking on a frame can be suppressed.

Abstract: A fixed part 72 of a lug 7 extends to an inner peripheral side with respect to an outer peripheral surface of a body part 30 (housing 1), and is fixed to a lower surface of a bottom frame 2 (housing 1) by a fixing bolt B2. Therefore, a tension bolt B1 for applying a tensile force to a head 4 and the fixing bolt B2 for fixing the lug 7 to the bottom frame 2 can be disposed alternately in a radial direction. Accordingly, the dimension of the lug 7 in an upper-lower direction can be reduced, and the bottom frame 2 (housing 1) can be thinned.

Abstract: A percussion instrument includes a bracket including an insertion hole into which a horizontal rod is insertable and other insertion holes into which another horizontal rod is insertable. The horizontal rod inserted into the insertion hole may be tightened by a first tightening portion of a first tightening member, and the horizontal rod inserted into the other insertion holes may be tightened by a second tightening portion of a second tightening member. Thus, since a percussion instrument is supportable by the two horizontal rods that extend in the same direction (horizontal direction) and have different diameters, versatility may be improved.

Abstract: A support part 31 supporting a rim sensor 11 is connected with a body part 30 throughout an entire periphery (via an annular part 31c) in a peripheral direction. Therefore, wherever a rim 5 is percussed in the peripheral direction, vibration due to such percussion is easily transmitted to the rim sensor 11 of a central part 31a via a first connection part 31b. In addition, a bottom frame 2 supporting a head sensor 10 and a top frame 3 supporting the rim sensor 11 are separate components. Accordingly, the erroneous detection of the vibration by the head sensor 10 at the time of percussion to the rim 5, or the erroneous detection of the vibration by the rim sensor 11 at the time of percussion to the head 4, can be suppressed. As a result, the accuracy of detecting the percussion to the rim 5 can be facilitated.

Abstract: Concave parts 24a to 24c formed on lower surfaces of radial parts 21 are formed in a groove shape extending from the side of a central part 20 of a bottom frame 2 toward an outer peripheral side in a radial direction. Accordingly, the formation of ribs in the radial parts 21 of the bottom frame 2 is not required, or the number of ribs that are formed can be reduced, while the rigidity of the bottom frame 2 (radial parts 21) can be secured by the concave parts 24a. Thus, even in the case where the bottom frame 2 is formed by using resin molding, the sink marks generated in the radial parts 21 can be suppressed. Therefore, the bottom frame 2 can be reinforced by the concave parts 24a to 24c, while the appearance of the percussion instrument 100 can be improved.

Abstract: A head sensor 10 is supported in a cantilevered state by using a plate 12, the plate 12 is deformed to be bent when a head 4 is percussed in a vicinity immediately above the cushion. Since the impact at the time of the percussion to the head 4 can be absorbed through bending of the plate 12, when the head sensor 10 (cushion 10c) is percussed in the vicinity immediately above the head sensor 10, the output value of the sensor 10b can be suppressed from becoming extremely large. Accordingly, the sensitivity can be suppressed from being varied in a percussion surface region close to the immediate above of the head sensor 10 or a percussion surface region away from the head sensor 10. Accordingly, the sensitivity distribution of the head sensor 10 with respect to the percussion to the head 4 can be unified.