JPS624890Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a head shell that reduces the electrical contact resistance caused by the connection between the connector pin of the head shell and the lead wire for cartridge connection, thereby eliminating short circuits and poor connections.

Conventionally, as shown in FIG. 1, a cartridge is attached to a head shell 1 via a lead wire 2 for connecting the cartridge. Cartridge and lead wire 2
is connected by a chip 3 (soldering, crimping, press-fitting, etc.), and the other chip 4 is connected to a connector pin 7 of a neck portion 5 (also serving as a neck cylinder) of the head shell 1. The connector pin 7 is connected to the input chip of the amplifier, and the signal from the cartridge passes through the lead wire 2 and enters the amplifier via the connector pin 7.

However, these structures tend to generate electrical contact resistance between the chip 3 of the lead wire 2 and the cartridge, and between the chip 4 of the lead wire 2 and the connector pin 7. An abnormally large contact resistance may appear depending on the materials used and the connection method.

In addition, in order to minimize the space required for installing the cartridge in the head shell 1, the lead wire 2
The work of connecting the chips 3 and 4 is difficult, and sometimes there are drawbacks such as short circuits and poor connections.

The present invention eliminates the above-mentioned drawbacks,
Fig. 2 is a structural diagram showing an embodiment of the present invention;
The fourth, fifth, and sixth figures are structural diagrams showing application examples of the present invention.

In FIG. 2, the neck part 5 of the head shell 1 (which also serves as a neck cylinder) is made up of a molded part 6 and a part a in which the cartridge connecting lead wire 2 and the connector pin 7 are paired in advance and non-resistance crimped or welded. A simultaneously molded piece of insulating material such as resin is press-fitted.

The cartridge is connected to the tip 3 of the lead wire 2. The signal from the cartridge passes through chip 3,
A pair of connector pins 7 pass through the lead wire 2
and then enters the amplifier. In other words, the structure is completely connected.

As an application example of the present invention, FIG. 3 shows a case in which a molded part 6 with 8 protrusions is made of elastic synthetic resin to prevent the lead wire 2 from bending or breaking. Fig. 4 has the same purpose as Fig. 3, but when a coil spring 9 is used instead of the protrusion 8, Fig. 5 shows a molded structure in which the neck part 5 is omitted and the head shell 1 also serves as the neck part 5. In this case, Figure 6 shows head shell 1, which is a molded product made of the same material.
0, and has a structure in which the neck portion 5 and molded portion 6 are omitted.

As described above, the present invention greatly improves the connection of the connector pins of the headshell of the cartridge, and in particular reduces the electrical contact resistance of the output circuit of this cartridge through which low-level signals flow. However, it is possible to improve reliability by eliminating problems such as poor connections, lead wire breaks, or short circuits. In addition, the reduction in the number of work steps for attaching lead wires has the advantage of lowering production costs.

[Brief explanation of the drawing]

Figure 1 is a conventional structural diagram, Figure 2 is a structural diagram showing one embodiment of the present invention, and Figures 3, 4, 5, and 6 are several applications of the present invention. FIG. 2 is a structural diagram showing an example. 1...Head shell, 2...Lead wire, 3,4
...Chip, 5...Network part, 6...Molding part, 7
... Connector pin, 8 ... Protrusion, 9 ... Coil spring, 10 ... Head shell.

Claims (1)

[Scope of utility model registration request] In the head shell having a connector pin, the cartridge connecting lead wire and the connector pin are connected and molded simultaneously with the neck portion of the head shell, and the connecting portion is embedded in an insulator provided in the neck portion. Hetsudociel features.