JPS6316005Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a head shell block for a record player in which a cartridge and a sound groove detection sensor (hereinafter abbreviated as sensor) are attached to the head shell.

<Prior Art> Conventionally, there is a head shell block for a record player in which a sound groove detection sensor is arranged in front of the stylus of a cartridge in order to detect the size of a record, the distance between tracks, etc. In this conventional head shell block, the mounting position of the sensor relative to the head shell is fixed, and the mounting position cannot be changed along the front-rear direction. On the other hand, since cartridges are replaced according to the user's preference, they come in a variety of shapes, from long ones to short ones.

<Problems to be Solved by the Invention> In the conventional head shell block described above, if the cartridge is long, the sensor cannot be attached to the head shell because the cartridge gets in the way. On the other hand, if the cartridge is short, the sensor can be attached, but the distance between the sensor and the needle tip will necessarily be long, which will cause an error in position detection and pose a problem in terms of reliability.

The present invention was devised in view of the above-mentioned actual situation in the prior art, and its purpose is to enable a sound groove detection sensor to be attached to the head shell even when the cartridge is relatively long, and to enable the sound groove detection sensor to be attached to the head shell even when the cartridge is relatively long. However, it is an object of the present invention to provide a head shell block for a record player that can be mounted with the distance between the sound groove detection sensor and the stylus tip appropriately set.

<Means for Solving the Problems> In order to achieve this object, the present invention provides a head shell block for a record player in which a cartridge and a sound groove detection sensor are attached to the head shell. The structure includes screws and nuts for fastening the sound groove to the head shell, and a permitting means for permitting movement of the sound groove detection sensor along the front-rear direction of the cartridge.

<Operation> The present invention is constructed as described above, and the sound groove detection sensor can be moved through the allowing means with the nut loosened. The detection sensor can be moved to the optimal position.
Even if the cartridge is long, the sound groove detection sensor can be attached to the head shell.
Even when the cartridge is short, the distance between the sound groove detection sensor and the needle tip can be set appropriately.

<Embodiment> Hereinafter, the head shell block of the record player of the present invention will be explained based on the drawings.

1 to 3 are explanatory diagrams showing an embodiment of the present invention, in which FIG. 1 is a side view, FIG. 2 is a perspective view showing a sound groove detection sensor provided in this embodiment, and FIG. FIG. 2 is an exploded perspective view showing the overall configuration.

As shown in these figures, the head shell 1 includes a cartridge 3 having a stylus 2.
A sound groove detection sensor 4 having a detection section is attached to the front of the cartridge 3. The sound groove detection sensor 4 has a horizontal part 5 and a hanging part 6 that hangs down from the front part of the horizontal part 5 and forms the detection part, and has a light emitting part (not shown) in the hanging part 6. The element and the light receiving element are arranged in pairs. Then, the light emitted from the light emitting element is directed toward the surface of the record, and the change in the amount of light reflected from the record is detected by the light receiving element, thereby optically detecting the interval between songs. This sound groove detection sensor 4 is provided with a long hole 7 extending in the longitudinal direction of the horizontal part 5. This elongated hole 7 constitutes a permitting means for permitting movement of the sound groove detection sensor 4 along the front-rear direction of the cartridge 3. Incidentally, a through hole 9 is formed on the upper surface of the head shell 1, and mounting portions 11 having recesses 10 are formed on both sides of the cartridge 3 at positions corresponding to the through holes 9 of the head shell 1. There is.

In order to incorporate the sound groove detection sensor 4 and the cartridge 3 into the head shell 1 described above, there is a gap between the head shell 1 and the cartridge 3.
The sound groove detection sensor 4 is placed so that the hanging part 6 is in the front.
and the through holes 9 of the head shell 1, the elongated holes 7 of the sound groove detection sensor 4, and the recesses 10 of the mounting portion 11 of the cartridge 3 are arranged in correspondence with each other. Insert the screw 8 into the through hole 9, the elongated hole 7, and the recess 10,
A nut 12 may be screwed onto this screw 8, and this nut 12 may be tightened.

In this embodiment, since the sound groove detection sensor 4 is provided with the elongated hole 7, the sound groove detection sensor 4 can be moved in the front and back direction of the cartridge 3. Even if the cartridge 3 is relatively long, the sound groove detection sensor 4 can be attached, and even if the cartridge 3 is relatively short, the sound groove detection sensor 4 and the tip of the stylus 2 can be attached.
In other words, it can be installed with the distance to the needle tip set appropriately.

In the above embodiment, the sound groove detection sensor 4 is arranged below the head shell 1, and the cartridge 3 is further arranged below it, but the present invention is not limited to this. The sensor 4 may be placed above the head shell 1 with the hanging portion 6 facing downward, and the cartridge 3 may be placed below the head shell 1.

<Effects of the invention> As described above, the head shell block of the record player of the present invention allows the sound groove detection sensor to be attached to the head shell even when the cartridge is relatively long, making it more versatile than before. In addition, even when the cartridge is relatively short, it can be installed with the distance between the sound groove detection sensor and the needle tip set appropriately, which reduces position detection errors and increases reliability compared to conventional methods. It has the effect of improving sex.

[Brief explanation of the drawing]

1 to 3 are explanatory diagrams showing one embodiment of the head shell block of the record player of the present invention, FIG. 1 is a side view, and FIG. 2 is a sound groove detection sensor provided in this embodiment. FIG. 3 is an exploded perspective view showing the overall configuration. 1... Head shell, 3... Cartridge, 4
...Sound groove detection sensor, 7...Elongated hole, 8...Screw, 12...Nut.

Claims (1)

[Scope of utility model registration request] In a record player head shell block in which a cartridge and a sound groove detection sensor are attached to the head shell, screws and nuts are provided for fastening the cartridge and sound groove detection sensor to the head shell, and screws and nuts are provided along the front and back direction of the cartridge. A head shell block for a record player, characterized in that a permitting means for permitting movement of the sound groove detection sensor is provided.