JPS6231692Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pulley mounting device.

2. Description of the Related Art In the case of arranging a pulley in a radio receiver or the like in a direction perpendicular to a substrate such as a printed circuit board or a chassis, a pulley mounting device as shown in FIG. 1 has been known in the past. That is, in the case of FIG. 1, a pulley 3 is inserted into a support shaft 2 formed integrally with a synthetic resin bracket 1, heat welded using a washer 4, etc., and the bracket 1 is fixed to a printed circuit board 5 with screws 6, etc. was.

However, the pulley mounting device as shown in FIG. 1 has the drawbacks of a large number of parts and a large number of mounting operations.

In view of this, the present invention proposes a pulley mounting device that eliminates the above-mentioned drawbacks, as shown in Figures 2 to 3 below.
An embodiment of the present invention will be described with reference to FIG.

Reference numeral 7 denotes a pulley having a shaft hole 8 in the center, and reference numeral 9 denotes a fixture made of synthetic resin.The fixture has a protrusion 11 and a protrusion receiving recess 12 on the inner surface 10 that rotatably support the pulley 7 at the center. They are formed at symmetrical positions with respect to the virtual center line A]. The outer surface 13 of the fixture 9 has two parallel fitting grooves 14a and 14b.
are formed at symmetrical positions with respect to the virtual center line A. 15 is a printed circuit board, and 16 is a mounting hole formed at the upper end of the printed circuit board.

In such a pulley mounting device, when mounting the pulley 7 in a direction perpendicular to the printed circuit board 15, two mounting tools 9 and 9' of the same shape are prepared.
Insert the protrusion 11 of one fixture 9 into the shaft hole 8 of the pulley 7 with one fixture 9 reversed 180 degrees with respect to the other fixture 9' so that the inner surfaces 10 and 10' are facing each other. and fit into the recess 12' of the other fixture 9'. At the same time, the protrusion 11' of the other fixture 9' is fitted into the recess 12 of one fixture 9, and the fixture 9,
The pulley 7 is rotatably held between the pulleys 9' and 9'. Fixtures 9, 9' holding the pulley 7 in this way
the printed circuit board 1 along the fitting grooves 14b and 14a'.
5 into the mounting hole 16. The mounting holes 17, 17' of the mounting holes 16 of the printed circuit board 15 are fitted into the fitting grooves 14b, 14a' of the mounting tools 9, 9'. Therefore, the fixtures 9 and 9' are fixed in the mounting holes 16 of the printed circuit board 15. In this way, the pulley 7 is rotatably mounted. A dial rope 18 is suspended from the pulley 7.

If you want to remove the pulley 7, such as when replacing the pulley 7, remove the pulley 7 by reversing the above procedure.
Just remove it.

Incidentally, the mounting hole provided in the printed circuit board 15 is not limited to the mounting hole shaped as shown in FIG. 4, but may be a mounting hole 16' as shown in FIG. 5.

Furthermore, in this embodiment, each fixture has a protrusion 11 [or 11'] and a recess 12 [or 12'] on the inner surface.
and two fitting grooves 14a, 14b on the outer surface.
[or 14a', 14b'] are provided, and each fixture has the same shape. However, the fixtures are not limited to this embodiment, and each fixture is not made to have the same shape, and the inner surface of one fixture 9 is It is also possible to provide only a protruding pillar, provide only a recess on the inner surface of the other fitting 9', and provide one fitting groove on the outer surface of each fitting. Further, each fitting may be connected via a hinge.

As described above, according to the pulley mounting device of the present invention, it is possible to significantly reduce the number of parts, thereby reducing costs, and there is no need to use jigs and tools, such as caulking, welding, etc. Since screw fixing work etc. can be omitted, the number of installation steps can be reduced and processing defects can be completely eliminated.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional pulley mounting device, Fig. 2 A and B are a perspective view and a cross-sectional view of a fixture constituting the pulley mounting device of the present invention, and Fig. 3 is a perspective view of the pulley mounting device of the present invention. FIG. 4 is a perspective view showing the state of the pulley mounting device of the present invention after assembly is completed; FIG. 5 is a perspective view showing another embodiment of the mounting hole of the board constituting the pulley mounting device of the present invention. It is a diagram. 7...Pulley, 8...Shaft hole, 10, 10'...
...Inner surface, 11, 11'... Projection, 12, 12'...
...Concavity, 13, 13'...outer surface.

Claims (1)

[Scope of utility model registration request] A pulley having a shaft hole, a first fixture having a protrusion for rotatably supporting the pulley on an inner surface and a fitting portion on an outer surface, and a receiving portion for the protrusion on an inner surface. The pulley is arranged between the first and second fixtures, the inner surfaces of which are opposite to each other, and the second fixture is provided with a fitting portion on the outer surface thereof, and the base plate is provided with a mounting hole. A pulley mounting device that is rotatably held and that a fitting portion of the first and second fittings is fitted and fixed in a mounting hole of the substrate.