Abstract: Disclosed are a vibrating diaphragm of a sound-producing apparatus and the sound-producing apparatus. The vibrating diaphragm includes a polyurethane rubber film layer and the polyurethane rubber film layer includes a block polymer formed by soft segment portions and hard segment portions that are arranged alternately, wherein each of the soft segment portions includes polyhydric alcohol and each of the hard segment portions includes isocyanate and a chain extender, and the polyurethane rubber is represented by a structural formula as follows: wherein R is the chain extender, R1 is polyhydric alcohol and n is a natural number. (FIG.

Abstract: A photography supporting frame comprises a base seat and supporting legs sequentially arranged around the base seat. Connecting bosses are arranged around the base seat; clamping teeth are sequentially arranged on the peripheries of the connecting bosses. The supporting legs each comprise a locating hook, a ball, a spring, an insertion piece, a foot shaft sleeve and a supporting leg rod. The ball and the spring are sequentially arranged in a cavity of the insertion piece from up to down; the locating hook is arranged in the middle of the upper portion of the insertion piece and connected to the ball. The insertion piece is arranged in the foot shaft sleeve. One end of the foot shaft sleeve is connected to one of the connecting bosses, and the other end of the foot shaft sleeve is arranged on the supporting leg rod.

Abstract: A photography supporting frame comprises a base seat and supporting legs sequentially arranged around the base seat. Connecting bosses are arranged around the base seat; clamping teeth are sequentially arranged on the peripheries of the connecting bosses. The supporting legs each comprise a locating hook, a ball, a spring, an insertion piece, a foot shaft sleeve and a supporting leg rod. The ball and the spring are sequentially arranged in a cavity of the insertion piece from up to down; the locating hook is arranged in the middle of the upper portion of the insertion piece and connected to the ball. The insertion piece is arranged in the foot shaft sleeve. One end of the foot shaft sleeve is connected to one of the connecting bosses, and the other end of the foot shaft sleeve is arranged on the supporting leg rod.

Abstract: A tripod head panel device of a tripod head comprises a tripod head panel and a removably mounted snap-fit plate. The tripod head panel comprises a fixed plate, a moveable plate mounted underneath the fixed plate, and a driving plate mounted underneath the moveable plate. The fixed plate comprises a supporting base plate and a first retaining wall protruding upward from the supporting base plate. The moveable plate comprises a supporting base plate and a second retaining wall protruding upward from the supporting base plate, with a driving hole provided in the center of the moveable plate. The driving plate comprises a base mounted underneath the moveable plate and a handle extending from an end of the base, with an offset cam inside the driving hole formed on the seat. The snap-fit plate is mounted on the supporting base plate between the first and the second retaining walls.

Abstract: A tripod head panel device of a tripod head comprises a tripod head panel and a removably mounted snap-fit plate. The tripod head panel comprises a fixed plate, a moveable plate mounted underneath the fixed plate, and a driving plate mounted underneath the moveable plate. The fixed plate comprises a supporting base plate and a first retaining wall protruding upward from the supporting base plate. The moveable plate comprises a supporting base plate and a second retaining wall protruding upward from the supporting base plate, with a driving hole provided in the center of the moveable plate. The driving plate comprises a base mounted underneath the moveable plate and a handle extending from an end of the base, with an offset cam inside the driving hole formed on the seat. The snap-fit plate is mounted on the supporting base plate between the first and the second retaining walls.