JPS581841Y2 - Tone arm in a record player - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a case in which a turntable is pivotally supported in a rotatable manner, and a lid is pivotably opened and closed, and a car 1-IJ is opened and closed in conjunction with the opening/closing operation of the lid. The present invention relates to an improved tone arm for a record player in which a tone arm having a horn at one end can be brought into contact with and separated from a turntable.

In the conventional device of this type, as shown in FIG. is formed, and the tone arm 6 has the cartridge 5 formed at one end of the guide frame 4.
The tip of is hooked.

The other end of the tone arm 6 is rotatably and tiltably supported at a fixed angle by a support 8 formed on the top plate 7 of the housing 2, and a shaft (not shown) is attached to the housing 2 in conjunction with the opening/closing operation of the lid 1. It is configured to move toward and away from the turntable 9 which is pivotally supported.

Incidentally, since the tip of the tone arm 6 having the cartridge 5 at one end is hooked to the guide frame 4 of the lid 1, and the needle of the cartridge 5 is directed downward and is suspended from the guide frame 4, the recording disc - When inserting the recording member 10 such as a recording sheet into the turntable 9 or taking it out from the turntable 9, the recording member 10 or the operator's hand may come into contact with the needle of the cartridge 5, There is a problem in that the needle of the cartridge 5 is damaged, and in extreme cases, the cartridge 5 itself is destroyed.

In the present invention, a tone arm having a cartridge at one end is linked to the opening/closing operation of the lid, and the cartridge of the tone arm is housed inside the lid when the lid is opened, so that the recording member can be moved. This device is designed to reliably prevent accidental damage to the cartridge when it is inserted or removed.Hereinafter, based on the attached drawings, Figure 2, one embodiment of the present invention will be described with the same reference numerals on the same or equivalent parts as in Figure 1. Use and elaborate.

In the figure, reference numeral 1 denotes a lid body, and the lid body 1 is pivotally attached to a housing 2 with screws 3 so as to be openable and closable.

Reference numeral 5 denotes a cartridge, and the cartridge 5 is attached to one end of the tone arm 6.

9 is a turntable; 10 is a recording member such as a recording disc or a recording sheet; 11 is a protective plate extending a certain distance from the opening edge of the lid 1 toward the center of the turntable 9; ) A slit 12 is formed at a certain distance along the movement locus of the cartridge 5 in a portion facing the IJ joint 5, and the needle of the cartridge 5 protrudes from the slit 12 during use.

Reference numeral 8 denotes a support portion formed inside the lid body 1, and the support portion 8 is pivotally mounted near the other end of the tone arm 6 so as to be freely rotatable and tiltable at a certain angle.

Reference numeral 13 denotes a protrusion formed on the closed edge of the housing 2 at a position facing the other end of the tone arm 6 and protruding a certain distance inward from below the closed edge of the housing 2; In conjunction with the opening/closing operation of the lid body 1, it can come into contact with and separate from the other end of the arm 6.

Reference numeral 14 denotes two guides formed inside the lid 1. The guides 14 are defined by the width of the recording groove of the recording member 10 from the recording start to the recording end, and regulate the rotation range of the tone arm 6. .

In the above configuration, the operation of the present device will be explained.

When the lid 1, which is pivotally connected to the housing 2 with screws 3 so that it can be opened and closed, is opened, the other end of the tone arm 6 engages with the protrusion 13 of the housing 2 in conjunction with the opening operation of the lid 1. , one end of the tone arm 6 rises using the support portion 8 of the lid 1 as a fulcrum, and as a result, the cartridge 5 is housed inside the lid 1 as shown.

Furthermore, when the lid 1 is closed, the other end of the tone arm 6 disengages from the protrusion 13 in conjunction with the closing operation of the lid 1, and the one end of the tone arm 6 descends using the support 8 as a fulcrum. death,
When the cartridge 5 comes into contact with the protection plate 11, the needle of the cartridge 5 protrudes from the slit 12 and comes into contact with the recording member 10 of the turntable 9.

That is, when the lid 1 is pivotally attached to the housing 2 so as to be openable and closable, the other end of the tone arm 6 is supported on the supporting portion 8 of the lid 1 so as to be rotatable and tiltable at a certain angle. A protrusion 1 that can be moved into and out of contact with the other end of the arm 6 and the opening/closing operation of the lid 1
4 in the housing 2, when the lid 1 is opened, the other end of the tone arm 6 and the protrusion 13 engage, and the cartridge 5 at one end of the tone arm 6 is automatically inserted into the lid 1. When inserting or removing the recording member 10, the recording member 10 or the operator's hand does not come into contact with the cartridge 5, and accidental damage to the cartridge 5 can be reliably prevented.

Further, by forming a protection plate extending a certain distance from the lower surface of the opening edge of the lid body 1 toward the center of the turntable 9, damage to the cartridge 5 can be more reliably prevented.

As described in detail above, the present invention forms a support part on the lid body, and when the tone arm is supported on the support part so as to be rotatable and tiltable at a certain angle, both S and S can be moved into and out of contact with the other end of the arm. A protrusion is formed on the housing, and when the lid is opened, the protrusion and the other end of the tone arm engage to store the cartridge at one end in the lid, and when the lid is closed, the protrusion and the tone arm are engaged. By bringing the cartridge at one end into contact with the turntable with the other end disengaged, there is no risk of damage to the cartridge due to contact between the recording member or the operator's hand and the cartridge when inserting or removing the recording member. This has practical effects such as being able to reliably prevent this, and also making the operation stable and reliable by interlocking the storage of the cartridge into the lid body with the opening/closing operation of the lid body.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a part of the conventional device in cross section, and FIG. 2 is a front view showing a part of the proposed device in cross section. 1... Lid body, 2... Housing, 5...
...Cartridge, 6...Tone arm, 8.
...Bearing part, 9...Turntable, 1
3... Protrusion.

Claims (1)

[Scope of utility model registration request] When the lid is pivotably opened and closed on the casing that rotatably supports the turntable, the tone arm, which has a cartridge at one end, is brought into contact with and separated from the turntable in conjunction with the opening and closing operations of the lid. In the one that was made to work,
A support portion is formed on the lid body, and the tone arm is supported on the support portion so as to be rotatable and tiltable at a certain angle.
A protrusion that can come into contact with and separate from the other end of the arm is formed on the casing, and when the lid is opened, the protrusion and the other end of the tone arm engage to accommodate the cartridge at one end within the lid. A tone arm for a record player, characterized in that when the lid is closed, the protrusion and the other end of the tone arm are disengaged so that the cartridge at one end of the protrusion comes into contact with the turntable.