JPS6030811Y2 - cantilever - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a pipe-shaped cartridge for playing records.

Generally, the function of a stylus tip is to trace a record, faithfully reproduce the vibrations carved into the record grooves of the record, and faithfully transmit the vibrations to the cantilever.

In many conventional stylus tips, the shank portion 11 that engages with the cantilever 12 has a cylindrical or prismatic shape, as shown in FIG.

Therefore, when providing the tip attachment hole 13 on the cantilever 12, the hole 13 is made slightly larger than the outer diameter of the shank portion 11, and after inserting the stylus tip therein, the adhesive 14 is inserted.
The stylus tip was glued and fixed to the cantilever.

Therefore, the cantilever 12 and the shank portion 11 of the stylus tip are connected via the adhesive 14.
Since the adhesive material 14 is made of synthetic resin thread, it has the disadvantage that it absorbs trace vibrations and does not faithfully transmit the vibrations of the stylus tip.

In addition, the adhesive material 14 is weak against shock, and the bonded portion is broken by shock, resulting in the shank portion 11 of the stylus tip coming off from the cantilever 12.

Therefore, the present invention eliminates the drawbacks of the conventional cantilever in which the stylus tip attachment part is also pipe-shaped from the base to the tip, and the cantilever 2 and the stylus tip are fixed in direct contact, thereby faithfully suppressing the trace vibration of the stylus tip 1. The purpose is to provide a cantilever in which the stylus tip can be transmitted to the cantilever 2 and the stylus tip is firmly fixed to the cantilever.

The present invention will be described in detail below with reference to embodiments shown in the drawings.

As shown in Figure 1, the stylus tip has a shank part 1.
The needle a has a tapered shape in which the diameter increases toward the needle tip.

Further, a substantially conical needle tip portion is formed at the tip of the shank portion 1a.

That is, this needle point is separated from the base IC made of the same metal as the shank 1a and the trace portion 1c of the diamond tip.

When attaching to the pipe-shaped tip of the cantilever 2, as shown in FIG. Small diameter hole 4 on top
, insert the stylus tip 1 from the bottom of the cantilever 2, and push it in.The shank 1a of the stylus tip
The hole edges 3' and 4' of the cantilever 2 are in direct and complete contact with each other, making it possible to completely transmit the vibrations of the stylus tip 1 to the cantilever 2.

Also, because of the tapered shank 1a, there is no chance of it coming out upwards, and since the cantilever 2 below is made of aluminum alloy, the hole edges 3' and 4' deform as shown in the figure, causing a wedge effect and preventing it from coming out. There will be very few.

Therefore, a vibrator with excellent acoustic characteristics can be provided, and faithful reproduction can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a front view of a stylus tip used in the present invention, FIG. 2 is a front view showing an embodiment of the present invention, and FIG. 3 is a sectional view of a conventional cantilever. 1...Stylus tip, 1a...Shank part, 1b...Base part, 1c...Trace part, 2...Cantilever, 3, 4...
...Stylus tip mounting hole.

Claims (1)

[Scope of utility model registration request] The shank part of the stylus tip has a tapered shape that increases in diameter toward the needle tip, and corresponds to the large diameter hole 3 and the upper hole 3 on the lower side of the pipe-like tip of the aluminum alloy pipe-like cantilever. A small diameter hole 4 is formed on the upper side, and both holes 3 and 4 are formed to have a diameter slightly smaller than the diameter of the shank portion of the stylus tip to be fitted into the holes, and the shank portion of the stylus tip is inserted into the holes. A cantilever characterized by being press-fitted and fixed.