JPS621Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a support structure for a vibration system in a pick-up cartridge.

As shown in FIG. 1, the support structure of the vibration system in a conventional pick-up cartridge is such that a vibrator (a winding frame around which a power generation coil is wound, a magnet, etc.) 2 having a cantilever 1 is connected to a support member 4 via a damper 3. However, when stylus pressure is applied (direction perpendicular to the longitudinal axis of the cantilever 1), the upper half A of the damper 3 moves to the lower half B.
Since it is in a more compressed state compared to the previous model, and internal stress is partially concentrated, linearity is poor for small-level alternating current displacements.

The present invention improves on such conventional drawbacks, and as explained in FIG. It has a structure in which a plurality of slits or grooves 5 are provided in the longitudinal axis direction of the cantilever 1, that is, in the thickness direction of the damper 3, in a portion surrounded by the damper outer peripheral edge.

FIG. 3 shows another embodiment equipped with a Y-shaped vibrator 2, which has a structure in which a slit or groove 5 is provided in a portion of the vibrator 2 of the damper 3 surrounded by mutually orthogonal arm portions 2a and 2b. However, in this embodiment, the slit or groove 5 has a wedge shape whose width increases toward the outer peripheral surface of the damper 3.

In the above structure, the damper 3 is
Since the slit or groove 5 is provided in the portion of the upper half A where internal stress is concentrated, the internal stress generated in the damper 3 due to a small level displacement due to alternating current is absorbed by the slit or groove 5 portion. The parts divided by the slits or grooves 5 are deformed with good linearity, and the alternating current vibration of the vibrator 2 is effectively damped by this deformation, so the pickup car has excellent vibration characteristics. It has advantages that can be realized by Tritsuji.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the structure of the vibration system of a conventional pick-up cartridge; Fig. 2 is a diagram showing the structure of the vibration system of the pick-up cartridge of the present invention;
The figure is a diagram showing the structure of another embodiment of the same. 1 is a cantilever, 2 is a vibrator, 3 is a damper, 4 is a support member, and 5 is a slit or groove.

Claims (1)

[Scope of utility model registration request] A vibrator 2 having a cantilever 1 is connected to a damper 3
In the structure in which the cantilever 1 is supported in a vibrating manner on the support member 4 through Pickup Cart Tsuji.