JPS5923206Y2 - record player - Google Patents

Description

[Detailed explanation of the invention] This invention is based on a belt that is connected between the motor shaft provided on the record player body side and the belt hook of the turntable which is rotatably supported by the turntable shaft on the record player body side. Regarding a belt-driven record player that is suspended and the turntable is rotationally driven by the motor, it is particularly difficult to provide a see-through window for the motor shaft on the turntable and to hang the belt suspended between them. The purpose of this invention is to improve the productivity of the turntable and the manufacturability of the turntable.

Generally, in a belt drive type record player, as shown in FIG. 5 is rotatably supported, and the motor shaft 2 is provided on the record player main body 1 on the turntable 5.
A see-through window 6 is provided so that the motor shaft 2 can be seen through the see-through window 6, and with the motor shaft 2 seen through the see-through window 6, the belt 8 suspended from the belt hook 7 of the turntable 5 is inserted into the motor shaft 2. The structure was such that the rack was attached to pulley 3.

By the way, in the record player having the above configuration, the belt 8 between the turntable 5 and the motor shaft 2 is removed during repair or transportation, and the belt 8 is suspended between the turntable 5 and the motor shaft 2 again in the state of use. The see-through window 6 provided on the turntable 5 has an effective function.

However, in a record player having such a configuration, as shown in FIGS. 2 and 3, when manufacturing the turntable 5, the part surface 11 of the molding die is provided approximately in the center of the transparent window 6. Molding burrs caused by the part surface 11 can be relatively easily removed by press working, but the belt hook provided on the back side of the turntable 5 may protrude near the see-through window 6 because the part 7 is located inward from the see-through window 6. The belt hook part 7 is provided with a stepped part 10 which is cut in order to hang the belt 8, and these protrusions 9 and the stepped part 1o make it difficult to hang the belt on the turntable 5. There is a problem in that it becomes difficult to put the belt 8, which has been put on the part 7 in advance, on the pulley 3 of the motor shaft 2.

In order to improve the workability of the belt hanging, as shown in FIGS. 4 and 5, a transparent window is provided on the inner end surface of the transparent window 6 from the front side to the back side of the turntable 5. 6
It is conceivable to provide an inclined surface 12 over the entire width a, so that the belt 8, which has been placed in advance on the belt hook 7, can be seen through the transparent window 6.

However, in this case, in order to form the inclined surface 12, the first part surface 11 is placed approximately in the center of the see-through 6 in the mold for the turntable 5, and the second part surface 13 is placed on the part where the belt hangs. 7, and for this purpose, the connecting part surfaces 14 of the first and second part surfaces 11.13 are positioned on the inclined surfaces 12 at both ends of the transparent window 6. Therefore, there was a problem in that the molding burrs generated by the joint part surface 14 could not be removed by press working, and the molding burrs had to be removed manually by sanding.

The present invention is intended to eliminate such conventional drawbacks, and the record player of the present invention will be described below with reference to drawings of embodiments.

FIGS. 6 and 7 show an example of the structure of the record player of the present invention, and in FIGS. 1 to 5, the reference numerals in the figures indicate the constituent elements.

Here, the difference from the one in FIGS. 1 to 5 is that the belt hook of the turntable 5 has an inclined surface 21 inside the transparent window 6 so that the belt 8, which is hung in advance on the portion 7, can be seen. It is formed on the end face in a range smaller than the full width a of the see-through window 6 from the front side to the back side of the turntable 6.

In this way, the first part surface 22 of the mold for forming the turntable 5 is located approximately in the center of the transparent window 6,
The second part surface 13 can be formed on the outer peripheral surface of the belt hook part 7, and the second part surface 13 can be formed on the outer circumferential surface of the belt hook part 7.
It is possible to avoid the connecting part surface from appearing on the inclined surface 21.

Therefore, molding burrs that occur on the first part surface when molding the turntable 5 can be removed by press working, and molding burrs that appear on the second part surface 23 can be removed by cutting the belt hook part 7 for belt hooking. It can be removed during the process.

In the above embodiment, the width of the tapered surface 21 is C(b>
Although it is formed in a shape that widens toward the end as shown in c), it may be formed in a straight line with the width or C.

Further, the tapered surface 21 has first and second inclined surfaces 21 a,
21b is formed into a substantially doglegged shape, but this may also be formed linearly.

As described above, according to the present invention, an inclined surface is formed on the inner end surface of the transparent window ρ provided in the turntable so that the belt hook of the turntable is reached from the front side to the back side of the turntable. Therefore, the belt hook of the turntable, which is rotatably supported on the turntable shaft provided in the record player main body, is attached in advance to the belt hook, which is installed in the record player main body, and the motor can be seen through the see-through window of the turntable. This makes it easier to suspend on the shaft, and since the inclined surface is formed in an area smaller than the entire width of the transparent window on the inner end surface of the transparent window, the part surface of the molding die is positioned on the sloped surface. This makes it easy to remove molding burrs caused by the part surface.
Therefore, it has great practical value, such as making it easier to manufacture the turntable itself.

[Brief explanation of drawings]

Fig. 1 is a plan view of a conventional record player, Fig. 2 is an enlarged view of its main parts, Fig. 3 is a sectional view of its main parts, and Fig. 4 is an enlarged plan view of its main parts of an improved conventional record player. FIG. 5 is a sectional view of the main part thereof, FIG. 6 is an enlarged sectional view of the main part showing an example of the structure of the record player of the present invention, and FIG. 7 is a sectional view of the main part. 2...Motor shaft, 3...Pulley, 5...
...Turntable, 6...See-through window, 7
...Belt hook part, 8...Belt, 2
1... Slope surface.

Claims (1)

[Scope of utility model registration request] The turntable is rotatably supported on the turntable shaft of the record player body, and has a see-through window at a location corresponding to the motor shaft provided on the record player body side, and a turntable is provided on the back side of the turntable. In a record player of a belt drive type, the turntable is rotatably driven by the motor shaft by suspending a belt between the provided belt hook and a pulley attached to the motor shaft. A record player, wherein an inclined surface is provided on the end face in the axial direction of the see-through window of the table, within a range smaller than the full width of the see-through window, so as to reach the belt hook from the front side to the back side of the turntable. .