JPS584293Y2 - Dust packing structure of telephone dial - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a structure of a dust gasket for a telephone dial that has good workability, can prevent falling off, and can ensure positioning.

Conventionally, the structure of the dust gasket is a composite structure, as shown in FIG. 1, which is an assembled cross-sectional view, and FIG. 2, which is a perspective view. It is a ring made of resin, and the notch 1a and thick portion 1b serve to position the dust packing 1 and prevent it from rotating.

However, since the dust packing 1 is made of flexible synthetic resin, it will bend if an external force is applied to pull or rotate it after placing it on the base plates 1 and 2, and the notch 1a and thick part 1b will not be as effective. It fell off or rotated.

Furthermore, during assembly, after the finger stop 3 was fixed to the base plate 2 with the screw 4, it was placed on the base plate 2 and fixed with a license plate, so the finger stop 3 got in the way, resulting in poor workability.

The present invention eliminates these drawbacks and relates to a dust packing structure that can prevent the dust packing from falling off the base plate, ensures reliable positioning, and has good workability.

A detailed explanation will be given below with reference to the drawings.

FIG. 3 is a side view of a telephone dial using the dust packing of the present invention, and FIG. 4 is an exploded perspective view of the same.

5 has a finger plate, 6 has a license plate,
74t dust gasket, 8 is a base plate, 9 is a rotation mechanism, and 10 is a finger stop.

The dust packing 7 is placed on the base plate 8 to which the rotating mechanism section 9 is attached, and is fixed by attaching the license plate 6.

After attaching the license plate 6, the finger plate complete 5 is attached, and then the finger stop 10 is attached to the base plate 8.

FIG. 5 is a perspective view of the essential parts of the dust packing 7 according to the present invention, seen from the rear side. The dust packing γ is a ring made of synthetic resin, and the skirt portion 7a is shown from the outer circumferential side of the back surface.

A rib 7b, a recess 7c, and a flat part 7d are provided, and the skirt part 7a is cut out at the position where the finger stop 10 is attached, and a positioning part 7e and a rib 7b have the same wall thickness and protrude to the position of the flat part 7d. A positioning protrusion 7f is provided.

The base plate 8 has a concave portion 8a, a convex portion 8b, and a flat surface portion 8c from the outer circumferential side in symmetry with the dust packing 7, and a finger stop fitting portion 8e for attaching the finger stop 10 to a part of the outer circumference and a finger stop fitting portion 8e for attaching the finger stop 10. There is a notch 8d in the upper part of the stop fitting part 8e.

Further, a plurality of fitting protrusions 8f are provided on the flat surface portion 8c, and a notch 6a (!: fitting protrusion 8f) of the license plate 6 is provided.
f are fitted, and the license plate 6 is attached to the base plate 8.
Fixed.

As shown in FIG. 6, which is an assembled cross-sectional view of the present invention, the dust packing 7 rests on the base plate 8, and the rib 1b and the recessed part 8at, the recessed part 1c and the convex part 8b, and the flat part 7d and the flat surface part 8c are engaged with each other. Further, the finger stop fitting portion 8e into which the finger stop 10 is fitted engages with the positioning portion 7e, and the positioning convex portion 7f fits into the notch 8d.

As mentioned above, by providing the unevenness on the dust packing 7 symmetrically with the unevenness provided on the base plate 8, it is possible to prevent the dust packing from falling off, and also to fit the positioning protrusion 1f and the notch 8d at the mounting position of the finger stop 10. By doing so, the dust packing 7 can be positioned reliably and rotation can be prevented.

Further, since the finger stop 10 can be attached after the dust packing 7, number plate 6, and finger plate complete 5 are attached to the base plate 8, workability is good, and positioning can be ensured, making it suitable for automatic assembly.

[Brief explanation of the drawing]

FIG. 1 is an assembled sectional view of a conventional dust packing, FIG. 2 is a perspective view of the same, and FIG. 3 is a side view of a telephone dial using the dust packing of the present invention. 4 is an exploded perspective view, FIG. 5 is a perspective view of the main parts, and FIG. 6 is an assembled sectional view. 5 has a finger plate, 6 has a license plate,
7 is a dust packing, 8 is a base plate, 9 is a rotating mechanism part, 10 is a finger stop, 7a is a skirt part,
7b is a rib, 7c is a recessed portion, 7d is a flat portion, 7e is a positioning portion, and 7f is a positioning convex portion.

Claims (1)

[Scope of utility model registration request] In a ring-shaped dust packing made of synthetic resin interposed between the base plate of a telephone dial and the license plate, a rib that engages with the outer periphery of the base plate engages with a notch in the finger stop attachment part of the base plate. A dust packing structure for a telephone dial, characterized in that a positioning convex portion is provided.