| 摘要 |
There is described a novel suspension for mounting a phonograph transducer cartridge which has a stylus engageable in the groove of a phonograph record disc. The suspension mounts the cartridge for movement in the suspension only in a direction normal to the disc. A support has an operating position above a plane of rotation of the disc. A pair of carrier members are disposed on opposite sides of the position of a cartridge in the suspension, and cooperatively define a pair of opposing parallel, convexly-curved cylindrical surfaces. The carrier members are mounted to the support for rotation about a respective pivot axis. Each pivot axis is spaced from the respective cylindrical surface in a direction away from the other member, is parallel to the respective cylindrical surface directrix, and is parallel to the disc plane of rotation. Flexible strap means are connected to the carrier members for substantially encircling a cartridge positioned between the cylindrical surfaces. The strap means also function to hold an encircled cartridge in substantially frictionless rolling contact with the cylindrical surfaces and to constrain an encircled cartridge to move relative to the support in the suspension without rotation along a line which is normal to the disc plane. Link means are coupled between the carrier members for causing both carrier members to move in synchronism in opposite directions about their respective pivot axes in response to loads applied to an encircled cartridge in a direction normal to the disc plane.
|
