Patent Translate Powered by EPO and Google Notice This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate, complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or financial decisions, should not be based on machine-translation output. DESCRIPTION JPS5714593 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a partial sectional view taken along the line II--II of FIG. 1, and FIG. It is a figure which shows a front state. 1 ...... exchange needle knob 5 ...... pickup cartridge body 7 ...... sectional circular through hole, 8 ...... cylindrical protrusion 9 & ..... distal end surface provided with a display. DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a Shinto knob of a pick-up cart Trinon and also to a change-needle knob, characterized in that the protrusion provided on the pick-up cartridge main body is a retrofit needle The replacement needle knob is attached to the pickup needle 1- / 76/31 "il, il-tritsy main body by fitting to the through hole provided on the knob, and easily and securely attached to the correct position. It is possible to easily confirm that it is properly mounted. Heretofore, the following has been used as a mounting mechanism for the exchange needle knob. That is, in the moving magnet type pick-up cartridge, it is common to press-fit the cylindrical portion incorporating the magnet into the hole formed between the yokes of the pick-up cartridge main body to position and fix the replacement needle knob. Also, in the moving coil type pickup cartridge, the holding portion provided on one of the replacement needle knob and the pickup cartridge main body is engaged with the guide portion provided on the other to perform positioning and fixing. There are many. In these devices, it is difficult to securely attach the replacement needle knob because the holding portion is difficult to see from the outside, and it is also difficult to check whether it is installed in the correct position. -1 Yo 9. : 逅 · 1 pigeon. An object of the present invention is to provide a mounting mechanism which can easily and reliably mount the replacement needle knob at the correct position and can easily confirm that the correct mounting has been made. A moving coil type pinoc up car torino, which is an embodiment of the invention, will be described with reference to the drawings. The vibration system consisting of the cantilever 2 and moving coil 3 etc. is swingably supported on the exchange needle knob 1, and the output terminal 4 of 4 trees is provided on the rear side, 01-05-2019 1 and the output is the pickup cartridge body 5 It is designed to be rolled out directly without going through. On one side of the exchange needle knob 10 force / chiller, the pickup cartridge attachment is provided with a through hole 7 of a circle-shaped cross section which penetrates the exchange needle knob almost straight with the rod 6. The pickup cartridge main body 5 is provided with a circle 3-11i '] (pillar-like projecting portion 8 fitted to the through hole 7 at a position corresponding to the through hole 7. Of the projection 8. The length is such that the tip end surface 9 of the projection 8 is flush with the surface of the replacement needle knob when the replacement needle knob 1 is properly mounted on the pickup cartridge body. In order to mount the replacement needle knob 1 on the pickup cartridge main body 5, the tip of the replacement needle knob is fitted while confirming the display provided on the tip surface 9 of the projection 8 through the through hole 7 of the replacement needle knob. Push in until it is flush with. Positioning can be performed more accurately if the cross-sectional shape of the protrusion and the through hole is, for example, an ellipse, a square, or any other shape than a circle. As described above, since the replacement needle knob mounting mechanism of the present invention can mount the replacement needle knob while viewing the display of the tip end face of the projection, it can be easily mounted at the correct position, and It can be easily confirmed that it has been correctly installed. It is needless to say that the mounting mechanism of the replacement needle knob according to the present invention can be used for any type of pick-up cartridge. Further, in the above embodiment, the projecting portion and the through hole are provided on one side of the force / teleber, but they may be provided diagonally or symmetrically provided on both sides. 01-05-2019 2
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