JPS5932018Y2 - Tone arm pipe mounting mechanism - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting mechanism for a tone arm pipe, and is devised so that the tone arm pipe can be mounted accurately and easily.

1 and 2 are a vertical sectional view and a bottom view of a conventional tone arm pipe mechanism.

1' is the arm bracket, and the tone arm pipe 2
a positioning piece 1b that defines the insertion hole 1a' into which the tone arm pipe 2' is inserted and the position of the insertion tip of the tone arm pipe 2' into which the tone arm pipe 2' is inserted;
The tone arm pipe 2' having a hole 2a' is provided with a through hole 2a', and by placing a plate nut 3 over the through hole 2a' and tightening a screw 4, the tone arm pipe 2 is attached to the arm bracket. It was fixed at 1.

In this case, when the tone arm pipe 2 is S-shaped or 1-shaped, it is necessary to screw the tone arm pipe 20 while adjusting the rotational position of the tone arm pipe 20 so that the tone arm pipe 2 does not tilt. The installation workability was poor.

Therefore, in this invention, Fig. 3 (longitudinal cross-sectional view) and Fig. 4
As shown in the figure (bottom view), a mounting tool 3 is used to facilitate the mounting work.

The arm bracket 1 has an insertion hole 1as, a positioning piece 1b, and a support piece 1c for the tone arm pipe 2.

In the tone arm pipe 2, the positioning hole 2a is the insertion hole 1a.
and the support piece 1c,
The fixture 3 is provided with a boss 3a that is inserted into the hole 2a.

Then, the tone arm pipe 2 is inserted through the insertion hole 1a of the arm bracket 1, and the end of the tone arm pipe 2 is brought into contact with the positioning piece 1b.

After that, the mounting tool 3 is opposed to the support piece 1c with the tone arm pipe 2 in between, and the boss 3a is inserted into the positioning hole 2a.
If the mounting bracket 3 is fixed to the arm bracket 1 with the screw 4.4 while the tone arm pipe 20 is inserted into the
Since the position in the rotational direction is uniquely defined and the tone arm pipe 2 is securely fixed by the insertion hole 1a of the arm bracket 1, the support piece 1c, and the fixture 303,
The tone arm pipe 2 can be fixed to the arm bracket 1 in a predetermined state.

According to the present invention described above, the tone arm pipe can be installed accurately and easily with an extremely simple structure.
Since the tone arm pipe is fixed at three points sandwiching the tone arm pipe, the tone arm pipe can be stably fixed to the arm bracket 1- even if the tone arm pipe is bent or shakes against the arm bracket.

[Brief explanation of the drawing]

The drawings all show the mounting mechanism of the tone arm pipe; Fig. 1 is a vertical sectional view of the conventional example, Fig. 2 is a bottom view of the same, and Fig. 3 is a longitudinal sectional view of the embodiment of the present invention. FIG. 4 is also a bottom view. 1 is the arm bracket, 2 is the tone arm pipe, 3 is the fixture, and 4 is the screw.

Claims (1)

[Scope of utility model registration request] An arm bracket having an insertion hole, a support piece provided at a predetermined interval inside the insertion hole, a button, and a positioning piece provided further inside and near the support piece, the insertion hole and the support. It consists of a tone arm pipe having a positioning hole provided at a position corresponding to the middle between the pieces, and a fitting having a boss inserted into the positioning hole, and the insertion position of the tone arm pipe into the arm bracket is determined as described above. The boss of the fixture is inserted into the positioning hole of the tone arm pipe, and the tone arm pipe is screwed to the arm bracket using the insertion hole, the support piece, and the fixture. Features a tone arm pipe mounting mechanism.